/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:02:31,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:02:31,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:02:31,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-21 15:02:31,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:02:31,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:02:31,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:02:31,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:02:31,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:02:31,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:02:31,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:02:31,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:02:31,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:02:31,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:02:31,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:02:31,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:02:31,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 15:02:31,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:02:31,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:02:31,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:02:31,895 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:02:31,921 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:02:31,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:02:31,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:02:31,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:02:31,923 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:02:31,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:02:31,923 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:02:31,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:02:31,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:02:31,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:02:31,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:02:31,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:02:31,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:02:31,924 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:02:31,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:02:31,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:02:31,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:02:31,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:02:31,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:02:31,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:02:31,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:02:31,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:02:31,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:02:31,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:02:31,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:02:31,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:02:31,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:02:31,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:02:31,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:02:31,927 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 15:02:32,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:02:32,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:02:32,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:02:32,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:02:32,217 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:02:32,218 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina2f.c [2020-08-21 15:02:32,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d39e1249a/4b7e1ae6d80f4a9e8a2b8d34947b90b0/FLAG1d11e4dd0 [2020-08-21 15:02:32,664 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:02:32,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina2f.c [2020-08-21 15:02:32,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d39e1249a/4b7e1ae6d80f4a9e8a2b8d34947b90b0/FLAG1d11e4dd0 [2020-08-21 15:02:33,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d39e1249a/4b7e1ae6d80f4a9e8a2b8d34947b90b0 [2020-08-21 15:02:33,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:02:33,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:02:33,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:02:33,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:02:33,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:02:33,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:02:33" (1/1) ... [2020-08-21 15:02:33,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea71ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:33, skipping insertion in model container [2020-08-21 15:02:33,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:02:33" (1/1) ... [2020-08-21 15:02:33,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:02:33,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:02:33,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:02:33,268 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:02:33,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:02:33,304 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:02:33,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:33 WrapperNode [2020-08-21 15:02:33,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:02:33,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:02:33,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:02:33,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:02:33,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:33" (1/1) ... [2020-08-21 15:02:33,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:33" (1/1) ... [2020-08-21 15:02:33,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:33" (1/1) ... [2020-08-21 15:02:33,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:33" (1/1) ... [2020-08-21 15:02:33,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:33" (1/1) ... [2020-08-21 15:02:33,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:33" (1/1) ... [2020-08-21 15:02:33,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:33" (1/1) ... [2020-08-21 15:02:33,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:02:33,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:02:33,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:02:33,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:02:33,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:02:33,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:02:33,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:02:33,486 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 15:02:33,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 15:02:33,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:02:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:02:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 15:02:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 15:02:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 15:02:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:02:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:02:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:02:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:02:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:02:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:02:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:02:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:02:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:02:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:02:33,764 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:02:33,765 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 15:02:33,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:02:33 BoogieIcfgContainer [2020-08-21 15:02:33,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:02:33,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:02:33,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:02:33,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:02:33,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:02:33" (1/3) ... [2020-08-21 15:02:33,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70edc124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:02:33, skipping insertion in model container [2020-08-21 15:02:33,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:02:33" (2/3) ... [2020-08-21 15:02:33,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70edc124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:02:33, skipping insertion in model container [2020-08-21 15:02:33,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:02:33" (3/3) ... [2020-08-21 15:02:33,777 INFO L109 eAbstractionObserver]: Analyzing ICFG sina2f.c [2020-08-21 15:02:33,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:02:33,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:02:33,839 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:02:33,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:02:33,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:02:33,859 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:02:33,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:02:33,860 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:02:33,860 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:02:33,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:02:33,860 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:02:33,877 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-21 15:02:33,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 15:02:33,883 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:33,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:02:33,884 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:33,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:33,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-08-21 15:02:33,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:33,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002185786] [2020-08-21 15:02:33,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:34,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:02:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:34,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:02:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:02:34,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002185786] [2020-08-21 15:02:34,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:02:34,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:02:34,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851997932] [2020-08-21 15:02:34,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:02:34,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:02:34,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:02:34,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:02:34,115 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-21 15:02:34,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:02:34,235 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-21 15:02:34,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:02:34,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-21 15:02:34,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:02:34,245 INFO L225 Difference]: With dead ends: 64 [2020-08-21 15:02:34,245 INFO L226 Difference]: Without dead ends: 32 [2020-08-21 15:02:34,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:02:34,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-21 15:02:34,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-21 15:02:34,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-21 15:02:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-21 15:02:34,284 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-08-21 15:02:34,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:02:34,284 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-21 15:02:34,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:02:34,285 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-21 15:02:34,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 15:02:34,286 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:34,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:02:34,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:02:34,287 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:34,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:34,288 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-08-21 15:02:34,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:34,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544402902] [2020-08-21 15:02:34,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:34,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:02:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:34,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:02:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:02:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:02:34,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544402902] [2020-08-21 15:02:34,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:02:34,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:02:34,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334069826] [2020-08-21 15:02:34,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:02:34,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:02:34,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:02:34,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:02:34,451 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2020-08-21 15:02:34,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:02:34,602 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-08-21 15:02:34,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:02:34,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-08-21 15:02:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:02:34,606 INFO L225 Difference]: With dead ends: 59 [2020-08-21 15:02:34,607 INFO L226 Difference]: Without dead ends: 42 [2020-08-21 15:02:34,608 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 [2020-08-21 15:02:34,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-21 15:02:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-08-21 15:02:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-21 15:02:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-08-21 15:02:34,622 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-08-21 15:02:34,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:02:34,623 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-08-21 15:02:34,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:02:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-08-21 15:02:34,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 15:02:34,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:02:34,624 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] [2020-08-21 15:02:34,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:02:34,625 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:02:34,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:02:34,625 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-08-21 15:02:34,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:02:34,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231122442] [2020-08-21 15:02:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:02:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:02:34,694 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:02:34,695 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:02:34,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:02:34,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:02:34 BoogieIcfgContainer [2020-08-21 15:02:34,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:02:34,741 INFO L168 Benchmark]: Toolchain (without parser) took 1703.01 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 104.8 MB in the beginning and 104.4 MB in the end (delta: 475.2 kB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:34,743 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 15:02:34,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.24 ms. Allocated memory is still 148.4 MB. Free memory was 104.4 MB in the beginning and 93.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:34,745 INFO L168 Benchmark]: Boogie Preprocessor took 122.10 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 93.9 MB in the beginning and 181.8 MB in the end (delta: -87.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:34,746 INFO L168 Benchmark]: RCFGBuilder took 340.44 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 164.0 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:34,748 INFO L168 Benchmark]: TraceAbstraction took 964.98 ms. Allocated memory is still 204.5 MB. Free memory was 163.3 MB in the beginning and 104.4 MB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:02:34,758 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 148.4 MB. Free memory was 122.9 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.24 ms. Allocated memory is still 148.4 MB. Free memory was 104.4 MB in the beginning and 93.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.10 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 93.9 MB in the beginning and 181.8 MB in the end (delta: -87.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.44 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 164.0 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 964.98 ms. Allocated memory is still 204.5 MB. Free memory was 163.3 MB in the beginning and 104.4 MB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 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] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i