/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=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:01:51,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:01:51,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:01:51,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-18 22:01:51,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:01:51,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:01:51,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:01:51,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:01:51,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:01:51,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:01:51,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:01:51,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:01:51,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:01:51,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:01:52,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:01:52,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:01:52,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 22:01:52,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:01:52,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:01:52,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:01:52,035 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 22:01:52,085 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:01:52,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:01:52,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:01:52,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:01:52,088 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:01:52,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:01:52,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:01:52,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:01:52,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:01:52,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:01:52,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:01:52,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:01:52,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:01:52,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:01:52,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:01:52,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:01:52,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:01:52,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:01:52,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:01:52,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:01:52,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:01:52,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:01:52,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:01:52,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:01:52,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:01:52,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:01:52,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:01:52,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:01:52,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:01:52,095 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=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 22:01:52,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:01:52,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:01:52,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:01:52,434 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:01:52,435 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:01:52,436 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2020-08-18 22:01:52,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27d3cab7e/5ba6d61e41964c1d90f717b6ff73e67e/FLAG16cccc8ca [2020-08-18 22:01:52,971 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:01:52,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res1of.c [2020-08-18 22:01:52,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27d3cab7e/5ba6d61e41964c1d90f717b6ff73e67e/FLAG16cccc8ca [2020-08-18 22:01:53,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27d3cab7e/5ba6d61e41964c1d90f717b6ff73e67e [2020-08-18 22:01:53,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:01:53,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:01:53,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:01:53,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:01:53,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:01:53,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:01:53" (1/1) ... [2020-08-18 22:01:53,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc4c8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:53, skipping insertion in model container [2020-08-18 22:01:53,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:01:53" (1/1) ... [2020-08-18 22:01:53,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:01:53,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:01:53,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:01:53,590 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:01:53,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:01:53,724 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:01:53,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:53 WrapperNode [2020-08-18 22:01:53,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:01:53,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:01:53,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:01:53,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:01:53,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:53" (1/1) ... [2020-08-18 22:01:53,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:53" (1/1) ... [2020-08-18 22:01:53,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:53" (1/1) ... [2020-08-18 22:01:53,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:53" (1/1) ... [2020-08-18 22:01:53,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:53" (1/1) ... [2020-08-18 22:01:53,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:53" (1/1) ... [2020-08-18 22:01:53,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:53" (1/1) ... [2020-08-18 22:01:53,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:01:53,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:01:53,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:01:53,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:01:53,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:53" (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 22:01:53,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:01:53,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:01:53,844 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 22:01:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 22:01:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:01:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:01:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 22:01:53,846 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 22:01:53,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 22:01:53,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:01:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:01:53,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:01:53,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:01:53,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:01:53,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:01:53,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:01:53,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:01:53,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:01:53,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:01:54,150 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:01:54,151 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 22:01:54,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:01:54 BoogieIcfgContainer [2020-08-18 22:01:54,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:01:54,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:01:54,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:01:54,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:01:54,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:01:53" (1/3) ... [2020-08-18 22:01:54,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635c5ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:01:54, skipping insertion in model container [2020-08-18 22:01:54,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:53" (2/3) ... [2020-08-18 22:01:54,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635c5ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:01:54, skipping insertion in model container [2020-08-18 22:01:54,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:01:54" (3/3) ... [2020-08-18 22:01:54,168 INFO L109 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-08-18 22:01:54,186 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:01:54,194 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:01:54,215 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:01:54,248 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:01:54,249 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:01:54,249 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:01:54,249 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:01:54,249 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:01:54,249 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:01:54,250 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:01:54,250 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:01:54,272 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-18 22:01:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 22:01:54,281 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:01:54,282 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] [2020-08-18 22:01:54,283 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:01:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:01:54,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-08-18 22:01:54,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:01:54,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471024719] [2020-08-18 22:01:54,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:01:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:54,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:01:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:54,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:01:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:54,530 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 22:01:54,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471024719] [2020-08-18 22:01:54,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:01:54,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:01:54,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578553320] [2020-08-18 22:01:54,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:01:54,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:01:54,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:01:54,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:01:54,573 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-18 22:01:54,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:01:54,752 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-18 22:01:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:01:54,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-18 22:01:54,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:01:54,772 INFO L225 Difference]: With dead ends: 64 [2020-08-18 22:01:54,773 INFO L226 Difference]: Without dead ends: 30 [2020-08-18 22:01:54,776 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 22:01:54,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-18 22:01:54,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-18 22:01:54,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-18 22:01:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-18 22:01:54,814 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-08-18 22:01:54,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:01:54,814 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-18 22:01:54,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:01:54,815 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-18 22:01:54,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 22:01:54,816 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:01:54,816 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] [2020-08-18 22:01:54,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:01:54,817 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:01:54,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:01:54,818 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-08-18 22:01:54,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:01:54,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891211175] [2020-08-18 22:01:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:01:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:54,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:01:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:54,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:01:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:54,957 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 22:01:54,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891211175] [2020-08-18 22:01:54,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:01:54,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 22:01:54,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334069826] [2020-08-18 22:01:54,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:01:54,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:01:54,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:01:54,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:01:54,962 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-08-18 22:01:55,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:01:55,103 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-08-18 22:01:55,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 22:01:55,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-08-18 22:01:55,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:01:55,105 INFO L225 Difference]: With dead ends: 53 [2020-08-18 22:01:55,105 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 22:01:55,107 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 22:01:55,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 22:01:55,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-18 22:01:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-18 22:01:55,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-08-18 22:01:55,117 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-08-18 22:01:55,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:01:55,117 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-08-18 22:01:55,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:01:55,118 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-08-18 22:01:55,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 22:01:55,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:01:55,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:01:55,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:01:55,120 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:01:55,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:01:55,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-08-18 22:01:55,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:01:55,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616292878] [2020-08-18 22:01:55,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:01:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:01:55,232 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:01:55,232 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:01:55,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:01:55,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:01:55 BoogieIcfgContainer [2020-08-18 22:01:55,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:01:55,257 INFO L168 Benchmark]: Toolchain (without parser) took 1919.55 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.2 MB in the beginning and 103.7 MB in the end (delta: -548.4 kB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:55,259 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-18 22:01:55,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.98 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 182.9 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:55,261 INFO L168 Benchmark]: Boogie Preprocessor took 60.39 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 180.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:55,262 INFO L168 Benchmark]: RCFGBuilder took 371.60 ms. Allocated memory is still 203.9 MB. Free memory was 180.2 MB in the beginning and 162.2 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:55,263 INFO L168 Benchmark]: TraceAbstraction took 1095.87 ms. Allocated memory is still 203.9 MB. Free memory was 161.6 MB in the beginning and 103.7 MB in the end (delta: 57.9 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:55,267 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 385.98 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 182.9 MB in the end (delta: -79.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.39 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 180.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 371.60 ms. Allocated memory is still 203.9 MB. Free memory was 180.2 MB in the beginning and 162.2 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1095.87 ms. Allocated memory is still 203.9 MB. Free memory was 161.6 MB in the beginning and 103.7 MB in the end (delta: 57.9 MB). Peak memory consumption was 57.9 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); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i