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 -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 14:09:58,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 14:09:58,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 14:09:58,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 14:09:58,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 14:09:58,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 14:09:58,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 14:09:58,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 14:09:58,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 14:09:58,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 14:09:58,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 14:09:58,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 14:09:58,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 14:09:58,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 14:09:58,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 14:09:58,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 14:09:58,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 14:09:58,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 14:09:58,992 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 14:09:58,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 14:09:58,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 14:09:58,993 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 14:09:58,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 14:09:58,994 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 14:09:58,994 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 14:09:58,995 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 14:09:58,995 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 14:09:58,995 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 14:09:58,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 14:09:58,996 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 14:09:58,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 14:09:58,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 14:09:58,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 14:09:58,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 14:09:58,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 14:09:58,997 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 14:09:58,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 14:09:58,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 14:09:58,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 14:09:58,998 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 14:09:58,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 14:09:58,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 14:09:58,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 14:09:58,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 14:09:58,999 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 14:09:59,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 14:09:59,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 14:09:59,000 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 14:09:59,030 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 14:09:59,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 14:09:59,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 14:09:59,047 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 14:09:59,047 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 14:09:59,048 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2019-09-09 14:09:59,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ea0db6e/958b166611e747d5ac1815879c817753/FLAG81f1feee6 [2019-09-09 14:09:59,689 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 14:09:59,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2019-09-09 14:09:59,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ea0db6e/958b166611e747d5ac1815879c817753/FLAG81f1feee6 [2019-09-09 14:09:59,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ea0db6e/958b166611e747d5ac1815879c817753 [2019-09-09 14:09:59,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 14:09:59,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 14:09:59,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 14:09:59,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 14:09:59,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 14:09:59,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:09:59" (1/1) ... [2019-09-09 14:09:59,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5abce757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:09:59, skipping insertion in model container [2019-09-09 14:09:59,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:09:59" (1/1) ... [2019-09-09 14:09:59,971 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 14:10:00,042 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 14:10:00,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:10:00,626 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 14:10:00,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:10:00,753 INFO L192 MainTranslator]: Completed translation [2019-09-09 14:10:00,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:10:00 WrapperNode [2019-09-09 14:10:00,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 14:10:00,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 14:10:00,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 14:10:00,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 14:10:00,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:10:00" (1/1) ... [2019-09-09 14:10:00,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:10:00" (1/1) ... [2019-09-09 14:10:00,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:10:00" (1/1) ... [2019-09-09 14:10:00,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:10:00" (1/1) ... [2019-09-09 14:10:00,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:10:00" (1/1) ... [2019-09-09 14:10:00,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:10:00" (1/1) ... [2019-09-09 14:10:00,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:10:00" (1/1) ... [2019-09-09 14:10:00,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 14:10:00,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 14:10:00,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 14:10:00,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 14:10:00,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:10:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-09 14:10:00,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 14:10:00,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 14:10:00,952 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 14:10:00,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 14:10:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 14:10:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 14:10:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 14:10:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 14:10:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 14:10:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 14:10:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 14:10:02,240 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 14:10:02,241 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 14:10:02,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:10:02 BoogieIcfgContainer [2019-09-09 14:10:02,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 14:10:02,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 14:10:02,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 14:10:02,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 14:10:02,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 02:09:59" (1/3) ... [2019-09-09 14:10:02,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4863d300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:10:02, skipping insertion in model container [2019-09-09 14:10:02,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:10:00" (2/3) ... [2019-09-09 14:10:02,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4863d300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:10:02, skipping insertion in model container [2019-09-09 14:10:02,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:10:02" (3/3) ... [2019-09-09 14:10:02,263 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label17.c [2019-09-09 14:10:02,275 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 14:10:02,286 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 14:10:02,305 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 14:10:02,336 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 14:10:02,337 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 14:10:02,337 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 14:10:02,337 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 14:10:02,338 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 14:10:02,338 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 14:10:02,338 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 14:10:02,338 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 14:10:02,371 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-09-09 14:10:02,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-09 14:10:02,384 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:10:02,385 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 14:10:02,388 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:10:02,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:10:02,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1025349313, now seen corresponding path program 1 times [2019-09-09 14:10:02,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:10:02,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:10:02,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:10:02,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:10:02,437 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:10:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:10:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:10:02,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:10:02,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 14:10:02,689 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:10:02,695 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 14:10:02,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 14:10:02,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 14:10:02,714 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-09-09 14:10:03,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:10:03,779 INFO L93 Difference]: Finished difference Result 362 states and 555 transitions. [2019-09-09 14:10:03,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 14:10:03,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-09-09 14:10:03,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:10:03,807 INFO L225 Difference]: With dead ends: 362 [2019-09-09 14:10:03,807 INFO L226 Difference]: Without dead ends: 294 [2019-09-09 14:10:03,810 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 14:10:03,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-09-09 14:10:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-09-09 14:10:03,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-09-09 14:10:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2019-09-09 14:10:03,928 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 36 [2019-09-09 14:10:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:10:03,929 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2019-09-09 14:10:03,929 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 14:10:03,929 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2019-09-09 14:10:03,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-09-09 14:10:03,940 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:10:03,940 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 14:10:03,941 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:10:03,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:10:03,941 INFO L82 PathProgramCache]: Analyzing trace with hash -322617587, now seen corresponding path program 1 times [2019-09-09 14:10:03,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:10:03,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:10:03,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:10:03,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:10:03,945 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:10:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:10:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:10:04,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:10:04,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 14:10:04,255 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:10:04,258 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 14:10:04,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 14:10:04,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 14:10:04,259 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 4 states. [2019-09-09 14:10:05,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:10:05,351 INFO L93 Difference]: Finished difference Result 866 states and 1202 transitions. [2019-09-09 14:10:05,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 14:10:05,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2019-09-09 14:10:05,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:10:05,368 INFO L225 Difference]: With dead ends: 866 [2019-09-09 14:10:05,368 INFO L226 Difference]: Without dead ends: 866 [2019-09-09 14:10:05,370 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 14:10:05,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2019-09-09 14:10:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 723. [2019-09-09 14:10:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2019-09-09 14:10:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1036 transitions. [2019-09-09 14:10:05,411 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1036 transitions. Word has length 155 [2019-09-09 14:10:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:10:05,412 INFO L475 AbstractCegarLoop]: Abstraction has 723 states and 1036 transitions. [2019-09-09 14:10:05,412 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 14:10:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1036 transitions. [2019-09-09 14:10:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-09-09 14:10:05,416 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:10:05,417 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 14:10:05,417 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:10:05,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:10:05,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1340598559, now seen corresponding path program 1 times [2019-09-09 14:10:05,418 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:10:05,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:10:05,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:10:05,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:10:05,419 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:10:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:10:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:10:05,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:10:05,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 14:10:05,616 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:10:05,619 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 14:10:05,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 14:10:05,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 14:10:05,620 INFO L87 Difference]: Start difference. First operand 723 states and 1036 transitions. Second operand 5 states. [2019-09-09 14:10:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:10:06,688 INFO L93 Difference]: Finished difference Result 1180 states and 1622 transitions. [2019-09-09 14:10:06,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 14:10:06,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2019-09-09 14:10:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:10:06,693 INFO L225 Difference]: With dead ends: 1180 [2019-09-09 14:10:06,693 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 14:10:06,694 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 14:10:06,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 14:10:06,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 14:10:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 14:10:06,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 14:10:06,695 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2019-09-09 14:10:06,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:10:06,695 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 14:10:06,695 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 14:10:06,696 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 14:10:06,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 14:10:06,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 02:10:06 BoogieIcfgContainer [2019-09-09 14:10:06,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 14:10:06,704 INFO L168 Benchmark]: Toolchain (without parser) took 6757.67 ms. Allocated memory was 132.6 MB in the beginning and 328.7 MB in the end (delta: 196.1 MB). Free memory was 87.3 MB in the beginning and 189.0 MB in the end (delta: -101.7 MB). Peak memory consumption was 94.4 MB. Max. memory is 7.1 GB. [2019-09-09 14:10:06,705 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory is still 106.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-09 14:10:06,706 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.09 ms. Allocated memory was 132.6 MB in the beginning and 202.9 MB in the end (delta: 70.3 MB). Free memory was 86.9 MB in the beginning and 166.9 MB in the end (delta: -80.0 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. [2019-09-09 14:10:06,707 INFO L168 Benchmark]: Boogie Preprocessor took 123.54 ms. Allocated memory is still 202.9 MB. Free memory was 166.9 MB in the beginning and 162.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2019-09-09 14:10:06,708 INFO L168 Benchmark]: RCFGBuilder took 1366.77 ms. Allocated memory was 202.9 MB in the beginning and 226.5 MB in the end (delta: 23.6 MB). Free memory was 162.0 MB in the beginning and 182.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 90.7 MB. Max. memory is 7.1 GB. [2019-09-09 14:10:06,709 INFO L168 Benchmark]: TraceAbstraction took 4455.26 ms. Allocated memory was 226.5 MB in the beginning and 328.7 MB in the end (delta: 102.2 MB). Free memory was 180.4 MB in the beginning and 189.0 MB in the end (delta: -8.6 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. [2019-09-09 14:10:06,713 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 132.6 MB. Free memory is still 106.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 803.09 ms. Allocated memory was 132.6 MB in the beginning and 202.9 MB in the end (delta: 70.3 MB). Free memory was 86.9 MB in the beginning and 166.9 MB in the end (delta: -80.0 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.54 ms. Allocated memory is still 202.9 MB. Free memory was 166.9 MB in the beginning and 162.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1366.77 ms. Allocated memory was 202.9 MB in the beginning and 226.5 MB in the end (delta: 23.6 MB). Free memory was 162.0 MB in the beginning and 182.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 90.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4455.26 ms. Allocated memory was 226.5 MB in the beginning and 328.7 MB in the end (delta: 102.2 MB). Free memory was 180.4 MB in the beginning and 189.0 MB in the end (delta: -8.6 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 94]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 94 SDtfs, 685 SDslu, 62 SDs, 0 SdLazy, 1790 SolverSat, 429 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=723occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 143 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 352 NumberOfCodeBlocks, 352 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 349 ConstructedInterpolants, 0 QuantifiedInterpolants, 108518 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 58/58 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...