/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:53:31,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:53:31,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:53:31,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:53:31,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:53:31,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:53:31,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:53:31,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:53:31,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:53:31,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:53:31,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:53:31,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:53:31,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:53:31,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:53:31,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:53:31,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:53:31,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:53:31,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:53:31,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:53:31,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:53:31,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:53:31,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:53:31,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:53:31,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:53:31,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:53:31,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:53:31,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:53:31,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:53:31,550 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 [2020-08-19 02:53:31,572 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:53:31,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:53:31,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:53:31,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:53:31,574 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:53:31,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:53:31,575 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:53:31,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:53:31,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:53:31,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:53:31,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:53:31,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:53:31,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:53:31,576 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:53:31,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:53:31,576 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:53:31,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:53:31,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:53:31,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:53:31,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:53:31,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:53:31,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:53:31,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:53:31,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:53:31,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:53:31,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:53:31,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:53:31,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:53:31,579 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:53:31,579 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:53:31,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:53:31,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:53:31,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:53:31,920 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:53:31,920 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:53:31,921 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-08-19 02:53:31,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/366a916a8/80a1ad65c3c64d639727566dcfbd35fa/FLAGac1340d9c [2020-08-19 02:53:32,441 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:53:32,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum_array-1.c [2020-08-19 02:53:32,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/366a916a8/80a1ad65c3c64d639727566dcfbd35fa/FLAGac1340d9c [2020-08-19 02:53:32,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/366a916a8/80a1ad65c3c64d639727566dcfbd35fa [2020-08-19 02:53:32,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:53:32,842 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:53:32,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:53:32,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:53:32,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:53:32,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:53:32" (1/1) ... [2020-08-19 02:53:32,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722dc2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:32, skipping insertion in model container [2020-08-19 02:53:32,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:53:32" (1/1) ... [2020-08-19 02:53:32,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:53:32,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:53:33,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:53:33,097 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:53:33,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:53:33,137 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:53:33,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:33 WrapperNode [2020-08-19 02:53:33,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:53:33,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:53:33,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:53:33,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:53:33,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:33" (1/1) ... [2020-08-19 02:53:33,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:33" (1/1) ... [2020-08-19 02:53:33,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:33" (1/1) ... [2020-08-19 02:53:33,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:33" (1/1) ... [2020-08-19 02:53:33,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:33" (1/1) ... [2020-08-19 02:53:33,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:33" (1/1) ... [2020-08-19 02:53:33,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:33" (1/1) ... [2020-08-19 02:53:33,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:53:33,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:53:33,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:53:33,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:53:33,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:33" (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 [2020-08-19 02:53:33,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:53:33,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:53:33,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 02:53:33,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:53:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:53:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:53:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 02:53:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-19 02:53:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:53:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:53:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:53:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:53:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:53:33,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:53:33,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:53:33,666 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:53:33,667 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 02:53:33,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:53:33 BoogieIcfgContainer [2020-08-19 02:53:33,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:53:33,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:53:33,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:53:33,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:53:33,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:53:32" (1/3) ... [2020-08-19 02:53:33,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62cd62de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:53:33, skipping insertion in model container [2020-08-19 02:53:33,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:33" (2/3) ... [2020-08-19 02:53:33,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62cd62de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:53:33, skipping insertion in model container [2020-08-19 02:53:33,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:53:33" (3/3) ... [2020-08-19 02:53:33,679 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-08-19 02:53:33,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:53:33,695 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:53:33,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:53:33,728 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:53:33,728 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:53:33,728 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:53:33,729 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:53:33,729 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:53:33,729 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:53:33,729 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:53:33,729 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:53:33,745 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-08-19 02:53:33,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 02:53:33,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:53:33,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:53:33,752 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:53:33,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:53:33,759 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2020-08-19 02:53:33,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:53:33,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163484087] [2020-08-19 02:53:33,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:53:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:33,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:53:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:53:34,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163484087] [2020-08-19 02:53:34,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:53:34,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:53:34,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080553158] [2020-08-19 02:53:34,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:53:34,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:53:34,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:53:34,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:53:34,041 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-08-19 02:53:34,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:53:34,210 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2020-08-19 02:53:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:53:34,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 02:53:34,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:53:34,222 INFO L225 Difference]: With dead ends: 52 [2020-08-19 02:53:34,222 INFO L226 Difference]: Without dead ends: 25 [2020-08-19 02:53:34,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:53:34,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-19 02:53:34,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-19 02:53:34,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-19 02:53:34,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-08-19 02:53:34,273 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2020-08-19 02:53:34,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:53:34,274 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-08-19 02:53:34,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:53:34,274 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-08-19 02:53:34,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 02:53:34,275 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:53:34,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:53:34,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:53:34,276 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:53:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:53:34,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2020-08-19 02:53:34,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:53:34,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609424205] [2020-08-19 02:53:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:53:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:34,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:53:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:53:34,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609424205] [2020-08-19 02:53:34,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:53:34,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:53:34,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419481296] [2020-08-19 02:53:34,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:53:34,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:53:34,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:53:34,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:53:34,458 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2020-08-19 02:53:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:53:34,630 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-08-19 02:53:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:53:34,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-19 02:53:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:53:34,634 INFO L225 Difference]: With dead ends: 57 [2020-08-19 02:53:34,634 INFO L226 Difference]: Without dead ends: 35 [2020-08-19 02:53:34,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:53:34,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-19 02:53:34,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2020-08-19 02:53:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-19 02:53:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-19 02:53:34,668 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2020-08-19 02:53:34,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:53:34,669 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-19 02:53:34,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:53:34,669 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-19 02:53:34,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 02:53:34,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:53:34,671 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] [2020-08-19 02:53:34,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:53:34,671 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:53:34,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:53:34,672 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2020-08-19 02:53:34,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:53:34,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655140361] [2020-08-19 02:53:34,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:53:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:53:34,771 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:53:34,771 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:53:34,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:53:34,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:53:34 BoogieIcfgContainer [2020-08-19 02:53:34,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:53:34,795 INFO L168 Benchmark]: Toolchain (without parser) took 1952.42 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 100.7 MB in the beginning and 100.2 MB in the end (delta: 489.2 kB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:34,796 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:53:34,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.85 ms. Allocated memory is still 137.9 MB. Free memory was 100.4 MB in the beginning and 90.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:34,798 INFO L168 Benchmark]: Boogie Preprocessor took 109.73 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 90.1 MB in the beginning and 176.4 MB in the end (delta: -86.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:34,799 INFO L168 Benchmark]: RCFGBuilder took 422.70 ms. Allocated memory is still 199.2 MB. Free memory was 176.4 MB in the beginning and 158.5 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:34,800 INFO L168 Benchmark]: TraceAbstraction took 1120.79 ms. Allocated memory is still 199.2 MB. Free memory was 158.5 MB in the beginning and 100.2 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:53:34,804 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.85 ms. Allocated memory is still 137.9 MB. Free memory was 100.4 MB in the beginning and 90.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.73 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 90.1 MB in the beginning and 176.4 MB in the end (delta: -86.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 422.70 ms. Allocated memory is still 199.2 MB. Free memory was 176.4 MB in the beginning and 158.5 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1120.79 ms. Allocated memory is still 199.2 MB. Free memory was 158.5 MB in the beginning and 100.2 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 [L18] COND TRUE i