/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:14:56,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:14:56,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:14:56,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-18 21:14:56,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:14:56,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:14:56,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:14:56,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:14:56,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:14:56,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:14:56,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:14:56,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:14:56,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:14:56,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:14:56,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:14:56,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:14:56,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 21:14:56,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:14:56,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:14:56,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:14:56,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 21:14:56,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:14:56,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:14:56,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:14:56,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:14:56,639 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:14:56,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:14:56,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:14:56,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:14:56,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:14:56,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:14:56,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:14:56,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:14:56,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:14:56,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:14:56,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:14:56,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:14:56,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:14:56,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:14:56,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:14:56,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:14:56,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:14:56,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:14:56,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:14:56,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:14:56,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:14:56,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:14:56,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:14:56,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:14:56,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:14:56,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:14:56,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:14:56,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:14:57,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:14:57,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:14:57,004 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:14:57,005 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+sep-reducer.c [2020-08-18 21:14:57,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5b787256/1c78e600c3c840ada095faab116321e6/FLAGcc56dc98b [2020-08-18 21:14:57,521 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:14:57,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+sep-reducer.c [2020-08-18 21:14:57,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5b787256/1c78e600c3c840ada095faab116321e6/FLAGcc56dc98b [2020-08-18 21:14:57,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5b787256/1c78e600c3c840ada095faab116321e6 [2020-08-18 21:14:57,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:14:57,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:14:57,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:14:57,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:14:57,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:14:57,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:14:57" (1/1) ... [2020-08-18 21:14:57,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc106bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:57, skipping insertion in model container [2020-08-18 21:14:57,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:14:57" (1/1) ... [2020-08-18 21:14:57,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:14:57,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:14:58,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:14:58,192 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:14:58,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:14:58,236 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:14:58,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:58 WrapperNode [2020-08-18 21:14:58,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:14:58,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:14:58,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:14:58,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:14:58,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:58" (1/1) ... [2020-08-18 21:14:58,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:58" (1/1) ... [2020-08-18 21:14:58,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:58" (1/1) ... [2020-08-18 21:14:58,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:58" (1/1) ... [2020-08-18 21:14:58,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:58" (1/1) ... [2020-08-18 21:14:58,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:58" (1/1) ... [2020-08-18 21:14:58,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:58" (1/1) ... [2020-08-18 21:14:58,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:14:58,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:14:58,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:14:58,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:14:58,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:14:58,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:14:58,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:14:58,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:14:58,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:14:58,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:14:58,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 21:14:58,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:14:58,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:14:58,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:14:58,688 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:14:58,689 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 21:14:58,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:14:58 BoogieIcfgContainer [2020-08-18 21:14:58,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:14:58,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:14:58,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:14:58,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:14:58,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:14:57" (1/3) ... [2020-08-18 21:14:58,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edeac62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:14:58, skipping insertion in model container [2020-08-18 21:14:58,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:14:58" (2/3) ... [2020-08-18 21:14:58,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edeac62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:14:58, skipping insertion in model container [2020-08-18 21:14:58,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:14:58" (3/3) ... [2020-08-18 21:14:58,701 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+sep-reducer.c [2020-08-18 21:14:58,712 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:14:58,725 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:14:58,746 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:14:58,798 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:14:58,798 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:14:58,798 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:14:58,799 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:14:58,799 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:14:58,799 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:14:58,799 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:14:58,799 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:14:58,820 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-18 21:14:58,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 21:14:58,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:14:58,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:14:58,830 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:14:58,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:14:58,836 INFO L82 PathProgramCache]: Analyzing trace with hash 453243256, now seen corresponding path program 1 times [2020-08-18 21:14:58,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:14:58,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323625980] [2020-08-18 21:14:58,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:14:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:14:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:14:59,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:14:59,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323625980] [2020-08-18 21:14:59,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:14:59,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:14:59,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676037088] [2020-08-18 21:14:59,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:14:59,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:14:59,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:14:59,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:14:59,444 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-08-18 21:15:12,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:12,225 INFO L93 Difference]: Finished difference Result 71 states and 99 transitions. [2020-08-18 21:15:12,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 21:15:12,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-08-18 21:15:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:12,238 INFO L225 Difference]: With dead ends: 71 [2020-08-18 21:15:12,238 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 21:15:12,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:15:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 21:15:12,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-08-18 21:15:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-18 21:15:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-08-18 21:15:12,285 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 15 [2020-08-18 21:15:12,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:12,286 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-08-18 21:15:12,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:15:12,286 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-08-18 21:15:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 21:15:12,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:15:12,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:15:12,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:15:12,289 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:15:12,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:15:12,289 INFO L82 PathProgramCache]: Analyzing trace with hash -386324053, now seen corresponding path program 1 times [2020-08-18 21:15:12,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:15:12,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274473501] [2020-08-18 21:15:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:15:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:12,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:15:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:15:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:15:12,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274473501] [2020-08-18 21:15:12,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:15:12,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:15:12,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453607807] [2020-08-18 21:15:12,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:15:12,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:15:12,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:15:12,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:15:12,686 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 5 states. [2020-08-18 21:15:19,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:15:19,113 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2020-08-18 21:15:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:15:19,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-18 21:15:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:15:19,114 INFO L225 Difference]: With dead ends: 55 [2020-08-18 21:15:19,114 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 21:15:19,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:15:19,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 21:15:19,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 21:15:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 21:15:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 21:15:19,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-08-18 21:15:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:15:19,118 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 21:15:19,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:15:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 21:15:19,118 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 21:15:19,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:15:19,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 21:15:19,244 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 21:15:19,245 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_22_0~0 |old(~__tmp_22_0~0)|) (= ~__tmp_22_1~0 |old(~__tmp_22_1~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|) (= ~__tmp_25_1~0 |old(~__tmp_25_1~0)|) (= ~__tmp_31_0~0 |old(~__tmp_31_0~0)|) (= ~__tmp_28_0~0 |old(~__tmp_28_0~0)|) (= ~__tmp_25_0~0 |old(~__tmp_25_0~0)|)) [2020-08-18 21:15:19,245 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 21:15:19,245 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 21:15:19,245 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 21:15:19,245 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 21:15:19,245 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 21:15:19,246 INFO L268 CegarLoopResult]: For program point L93(lines 93 102) no Hoare annotation was computed. [2020-08-18 21:15:19,246 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 145) no Hoare annotation was computed. [2020-08-18 21:15:19,247 INFO L264 CegarLoopResult]: At program point L40(lines 22 139) the Hoare annotation is: (= (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* 4294967296 .cse0) (* 3 (div (+ (* .cse0 (- 4294967296)) main_~main__x~0) 3)))) main_~main__x~0) [2020-08-18 21:15:19,247 INFO L268 CegarLoopResult]: For program point L65(lines 65 80) no Hoare annotation was computed. [2020-08-18 21:15:19,247 INFO L268 CegarLoopResult]: For program point L86(lines 86 108) no Hoare annotation was computed. [2020-08-18 21:15:19,247 INFO L268 CegarLoopResult]: For program point L20(lines 20 144) no Hoare annotation was computed. [2020-08-18 21:15:19,247 INFO L268 CegarLoopResult]: For program point L115(lines 115 137) no Hoare annotation was computed. [2020-08-18 21:15:19,247 INFO L268 CegarLoopResult]: For program point L45(lines 45 82) no Hoare annotation was computed. [2020-08-18 21:15:19,248 INFO L271 CegarLoopResult]: At program point L136(lines 14 145) the Hoare annotation is: true [2020-08-18 21:15:19,248 INFO L268 CegarLoopResult]: For program point L33(lines 33 138) no Hoare annotation was computed. [2020-08-18 21:15:19,248 INFO L268 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-08-18 21:15:19,248 INFO L268 CegarLoopResult]: For program point L54(lines 54 81) no Hoare annotation was computed. [2020-08-18 21:15:19,248 INFO L264 CegarLoopResult]: At program point L50(lines 22 139) the Hoare annotation is: (= (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* 4294967296 .cse0) (* 3 (div (+ (* .cse0 (- 4294967296)) main_~main__x~0) 3)))) main_~main__x~0) [2020-08-18 21:15:19,248 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 145) no Hoare annotation was computed. [2020-08-18 21:15:19,250 INFO L271 CegarLoopResult]: At program point L133(lines 33 138) the Hoare annotation is: true [2020-08-18 21:15:19,250 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 95) no Hoare annotation was computed. [2020-08-18 21:15:19,251 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 13 145) the Hoare annotation is: (and (= |old(~__tmp_22_1~0)| ~__tmp_22_1~0) (= |old(~__tmp_22_0~0)| ~__tmp_22_0~0) (= |old(~__return_65~0)| ~__return_65~0) (= |old(~__tmp_25_1~0)| ~__tmp_25_1~0) (= |old(~__tmp_25_0~0)| ~__tmp_25_0~0) (= |old(~__tmp_31_0~0)| ~__tmp_31_0~0) (= |old(~__tmp_28_0~0)| ~__tmp_28_0~0)) [2020-08-18 21:15:19,251 INFO L264 CegarLoopResult]: At program point L59(lines 34 110) the Hoare annotation is: (= (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* 4294967296 .cse0) (* 3 (div (+ (* .cse0 (- 4294967296)) main_~main__x~0) 3)))) main_~main__x~0) [2020-08-18 21:15:19,251 INFO L271 CegarLoopResult]: At program point L121(lines 33 138) the Hoare annotation is: true [2020-08-18 21:15:19,252 INFO L268 CegarLoopResult]: For program point L22(lines 22 139) no Hoare annotation was computed. [2020-08-18 21:15:19,258 INFO L268 CegarLoopResult]: For program point L43(lines 43 109) no Hoare annotation was computed. [2020-08-18 21:15:19,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:15:19 BoogieIcfgContainer [2020-08-18 21:15:19,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:15:19,290 INFO L168 Benchmark]: Toolchain (without parser) took 21382.53 ms. Allocated memory was 146.8 MB in the beginning and 234.4 MB in the end (delta: 87.6 MB). Free memory was 102.9 MB in the beginning and 168.4 MB in the end (delta: -65.5 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:15:19,292 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 21:15:19,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.73 ms. Allocated memory is still 146.8 MB. Free memory was 102.7 MB in the beginning and 92.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-18 21:15:19,295 INFO L168 Benchmark]: Boogie Preprocessor took 118.73 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 92.0 MB in the beginning and 180.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-18 21:15:19,296 INFO L168 Benchmark]: RCFGBuilder took 336.10 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 164.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:15:19,298 INFO L168 Benchmark]: TraceAbstraction took 20591.77 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 163.3 MB in the beginning and 168.4 MB in the end (delta: -5.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:15:19,309 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.73 ms. Allocated memory is still 146.8 MB. Free memory was 102.7 MB in the beginning and 92.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.73 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 92.0 MB in the beginning and 180.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.10 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 164.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20591.77 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 163.3 MB in the beginning and 168.4 MB in the end (delta: -5.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: 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: 34]: Loop Invariant Derived loop invariant: 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) == main__x - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) == main__x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) == main__x - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 19.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 26 SDslu, 77 SDs, 0 SdLazy, 126 SolverSat, 7 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 18.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 17 NumberOfFragments, 109 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 3292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...