/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/jain_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:17:13,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:17:13,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:17:13,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:17:13,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:17:13,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:17:13,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:17:13,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:17:13,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:17:13,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:17:13,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:17:13,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:17:13,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:17:13,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:17:13,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:17:13,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:17:13,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:17:13,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:17:13,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:17:13,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:17:13,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:17:13,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:17:13,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:17:13,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:17:13,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:17:13,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:17:13,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:17:13,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:17:13,955 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 [2020-09-21 10:17:14,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:17:14,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:17:14,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:17:14,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:17:14,019 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:17:14,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:17:14,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:17:14,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:17:14,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:17:14,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:17:14,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:17:14,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:17:14,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:17:14,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:17:14,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:17:14,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:17:14,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:17:14,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:17:14,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:17:14,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:17:14,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:17:14,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:17:14,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:17:14,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:17:14,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:17:14,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:17:14,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:17:14,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:17:14,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:17:14,028 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 -> false [2020-09-21 10:17:14,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:17:14,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:17:14,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:17:14,542 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:17:14,542 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:17:14,543 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_4-2.c [2020-09-21 10:17:14,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d9b3e22/53dbf312572c406c9c4c459dc21de6eb/FLAGeadf53dd2 [2020-09-21 10:17:15,180 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:17:15,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/jain_4-2.c [2020-09-21 10:17:15,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d9b3e22/53dbf312572c406c9c4c459dc21de6eb/FLAGeadf53dd2 [2020-09-21 10:17:15,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d9b3e22/53dbf312572c406c9c4c459dc21de6eb [2020-09-21 10:17:15,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:17:15,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:17:15,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:17:15,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:17:15,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:17:15,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:17:15" (1/1) ... [2020-09-21 10:17:15,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e09f978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:15, skipping insertion in model container [2020-09-21 10:17:15,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:17:15" (1/1) ... [2020-09-21 10:17:15,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:17:15,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:17:15,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:17:15,850 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:17:15,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:17:15,882 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:17:15,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:15 WrapperNode [2020-09-21 10:17:15,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:17:15,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:17:15,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:17:15,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:17:15,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:15" (1/1) ... [2020-09-21 10:17:15,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:15" (1/1) ... [2020-09-21 10:17:15,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:15" (1/1) ... [2020-09-21 10:17:15,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:15" (1/1) ... [2020-09-21 10:17:15,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:15" (1/1) ... [2020-09-21 10:17:15,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:15" (1/1) ... [2020-09-21 10:17:15,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:15" (1/1) ... [2020-09-21 10:17:15,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:17:15,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:17:15,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:17:15,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:17:15,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:15" (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 [2020-09-21 10:17:16,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:17:16,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:17:16,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 10:17:16,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:17:16,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:17:16,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-21 10:17:16,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 10:17:16,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:17:16,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:17:16,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:17:16,258 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:17:16,258 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 10:17:16,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:17:16 BoogieIcfgContainer [2020-09-21 10:17:16,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:17:16,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:17:16,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:17:16,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:17:16,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:17:15" (1/3) ... [2020-09-21 10:17:16,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291f1eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:17:16, skipping insertion in model container [2020-09-21 10:17:16,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:15" (2/3) ... [2020-09-21 10:17:16,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291f1eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:17:16, skipping insertion in model container [2020-09-21 10:17:16,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:17:16" (3/3) ... [2020-09-21 10:17:16,273 INFO L109 eAbstractionObserver]: Analyzing ICFG jain_4-2.c [2020-09-21 10:17:16,283 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:17:16,293 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:17:16,312 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:17:16,337 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:17:16,337 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:17:16,338 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:17:16,338 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:17:16,338 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:17:16,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:17:16,339 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:17:16,339 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:17:16,358 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-09-21 10:17:16,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 10:17:16,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:16,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:16,365 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:16,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:16,371 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-09-21 10:17:16,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:16,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054700862] [2020-09-21 10:17:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:16,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:17:16,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054700862] [2020-09-21 10:17:16,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:17:16,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:17:16,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600691300] [2020-09-21 10:17:16,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:17:16,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:16,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:17:16,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:17:16,746 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-09-21 10:17:16,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:16,860 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-09-21 10:17:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:17:16,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-09-21 10:17:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:16,874 INFO L225 Difference]: With dead ends: 33 [2020-09-21 10:17:16,874 INFO L226 Difference]: Without dead ends: 20 [2020-09-21 10:17:16,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:17:16,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-09-21 10:17:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-09-21 10:17:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-21 10:17:16,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-09-21 10:17:16,928 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-09-21 10:17:16,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:16,929 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-09-21 10:17:16,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:17:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-09-21 10:17:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 10:17:16,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:16,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:16,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:17:16,931 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:16,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:16,932 INFO L82 PathProgramCache]: Analyzing trace with hash 327764987, now seen corresponding path program 1 times [2020-09-21 10:17:16,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:16,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353203301] [2020-09-21 10:17:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:17,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:17,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:17:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:17:17,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353203301] [2020-09-21 10:17:17,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:17:17,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 10:17:17,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331838632] [2020-09-21 10:17:17,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:17:17,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:17,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:17:17,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:17:17,147 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-09-21 10:17:17,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:17,197 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-09-21 10:17:17,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:17:17,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-09-21 10:17:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:17,199 INFO L225 Difference]: With dead ends: 19 [2020-09-21 10:17:17,199 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:17:17,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:17:17,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:17:17,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:17:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:17:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:17:17,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-21 10:17:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:17,203 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:17:17,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:17:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:17:17,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:17:17,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:17:17,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:17:17,254 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 10:17:17,254 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:17:17,254 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:17:17,255 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 10:17:17,255 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 10:17:17,255 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 10:17:17,255 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 27) the Hoare annotation is: true [2020-09-21 10:17:17,256 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 27) no Hoare annotation was computed. [2020-09-21 10:17:17,256 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 main_~z~0))) (<= .cse0 (* 4 (div .cse0 4)))) [2020-09-21 10:17:17,256 INFO L264 CegarLoopResult]: At program point L24-1(lines 18 25) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 main_~z~0))) (<= .cse0 (* 4 (div .cse0 4)))) [2020-09-21 10:17:17,256 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 25) no Hoare annotation was computed. [2020-09-21 10:17:17,257 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 27) no Hoare annotation was computed. [2020-09-21 10:17:17,257 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-21 10:17:17,257 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-21 10:17:17,257 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-21 10:17:17,258 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-21 10:17:17,258 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-21 10:17:17,258 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-09-21 10:17:17,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:17:17 BoogieIcfgContainer [2020-09-21 10:17:17,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:17:17,285 INFO L168 Benchmark]: Toolchain (without parser) took 1737.35 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 103.2 MB in the beginning and 120.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:17:17,286 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 10:17:17,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.19 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 93.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:17:17,288 INFO L168 Benchmark]: Boogie Preprocessor took 108.27 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.3 MB in the beginning and 181.5 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:17:17,290 INFO L168 Benchmark]: RCFGBuilder took 270.36 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 170.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:17:17,290 INFO L168 Benchmark]: TraceAbstraction took 1016.64 ms. Allocated memory is still 202.4 MB. Free memory was 169.7 MB in the beginning and 120.7 MB in the end (delta: 49.1 MB). Peak memory consumption was 49.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:17:17,295 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 332.19 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 93.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.27 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.3 MB in the beginning and 181.5 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 270.36 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 170.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1016.64 ms. Allocated memory is still 202.4 MB. Free memory was 169.7 MB in the beginning and 120.7 MB in the end (delta: 49.1 MB). Peak memory consumption was 49.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: x + y + z <= 4 * ((x + y + z) / 4) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 11 SDslu, 59 SDs, 0 SdLazy, 33 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 31 HoareAnnotationTreeSize, 9 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1770 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...