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/loops/terminator_03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:25:12,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:25:12,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:25:12,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:25:12,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:25:12,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:25:12,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:25:12,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:25:12,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:25:12,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:25:12,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:25:12,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:25:12,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:25:12,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:25:12,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:25:12,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:25:12,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:25:12,943 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 [2019-09-20 13:25:12,957 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:25:12,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:25:12,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:25:12,958 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:25:12,958 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:25:12,959 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:25:12,959 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:25:12,959 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:25:12,959 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:25:12,959 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:25:12,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:25:12,960 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:25:12,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:25:12,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:25:12,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:25:12,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:25:12,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:25:12,961 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:25:12,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:25:12,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:25:12,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:25:12,962 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:25:12,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:25:12,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:12,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:25:12,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:25:12,963 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:25:12,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:25:12,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:25:12,964 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:25:12,993 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:25:13,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:25:13,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:25:13,013 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:25:13,014 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:25:13,015 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-2.i [2019-09-20 13:25:13,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9554c8e1c/e7ebaeeb5065429f82ced844ec2f6a4e/FLAGa490fa74c [2019-09-20 13:25:13,488 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:25:13,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-2.i [2019-09-20 13:25:13,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9554c8e1c/e7ebaeeb5065429f82ced844ec2f6a4e/FLAGa490fa74c [2019-09-20 13:25:13,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9554c8e1c/e7ebaeeb5065429f82ced844ec2f6a4e [2019-09-20 13:25:13,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:25:13,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:25:13,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:13,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:25:13,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:25:13,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:13" (1/1) ... [2019-09-20 13:25:13,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@702bca65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:13, skipping insertion in model container [2019-09-20 13:25:13,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:13" (1/1) ... [2019-09-20 13:25:13,880 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:25:13,896 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:25:14,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:14,061 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:25:14,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:14,093 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:25:14,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:14 WrapperNode [2019-09-20 13:25:14,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:14,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:25:14,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:25:14,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:25:14,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:14" (1/1) ... [2019-09-20 13:25:14,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:14" (1/1) ... [2019-09-20 13:25:14,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:14" (1/1) ... [2019-09-20 13:25:14,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:14" (1/1) ... [2019-09-20 13:25:14,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:14" (1/1) ... [2019-09-20 13:25:14,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:14" (1/1) ... [2019-09-20 13:25:14,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:14" (1/1) ... [2019-09-20 13:25:14,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:25:14,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:25:14,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:25:14,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:25:14,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:14" (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 [2019-09-20 13:25:14,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:25:14,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:25:14,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:25:14,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:25:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:25:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 13:25:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:25:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:25:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-20 13:25:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:25:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:25:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:25:14,461 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:25:14,462 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:25:14,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:14 BoogieIcfgContainer [2019-09-20 13:25:14,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:25:14,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:25:14,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:25:14,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:25:14,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:25:13" (1/3) ... [2019-09-20 13:25:14,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e450b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:14, skipping insertion in model container [2019-09-20 13:25:14,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:14" (2/3) ... [2019-09-20 13:25:14,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e450b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:14, skipping insertion in model container [2019-09-20 13:25:14,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:14" (3/3) ... [2019-09-20 13:25:14,473 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_03-2.i [2019-09-20 13:25:14,488 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:25:14,497 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:25:14,516 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:25:14,546 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:25:14,547 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:25:14,547 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:25:14,547 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:25:14,547 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:25:14,547 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:25:14,548 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:25:14,548 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:25:14,563 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-09-20 13:25:14,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 13:25:14,573 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:14,574 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:14,577 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:14,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:14,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1995182865, now seen corresponding path program 1 times [2019-09-20 13:25:14,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:14,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:14,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:14,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:14,640 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:14,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:14,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:25:14,776 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:14,781 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:25:14,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:25:14,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:25:14,799 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2019-09-20 13:25:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:14,897 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2019-09-20 13:25:14,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:25:14,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-20 13:25:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:14,912 INFO L225 Difference]: With dead ends: 28 [2019-09-20 13:25:14,912 INFO L226 Difference]: Without dead ends: 13 [2019-09-20 13:25:14,916 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:25:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-20 13:25:14,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-20 13:25:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-20 13:25:14,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-20 13:25:14,956 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-09-20 13:25:14,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:14,956 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-20 13:25:14,957 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:25:14,957 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-20 13:25:14,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-20 13:25:14,957 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:14,958 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:14,958 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:14,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:14,959 INFO L82 PathProgramCache]: Analyzing trace with hash -2146425897, now seen corresponding path program 1 times [2019-09-20 13:25:14,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:14,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:14,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:14,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:14,961 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:15,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:15,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:25:15,029 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:15,030 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:25:15,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:25:15,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:25:15,031 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2019-09-20 13:25:15,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:15,061 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-09-20 13:25:15,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:25:15,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-09-20 13:25:15,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:15,062 INFO L225 Difference]: With dead ends: 11 [2019-09-20 13:25:15,062 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:25:15,063 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:25:15,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:25:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:25:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:25:15,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:25:15,065 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-09-20 13:25:15,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:15,065 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:25:15,065 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:25:15,066 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:25:15,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:25:15,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:25:15 BoogieIcfgContainer [2019-09-20 13:25:15,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:25:15,075 INFO L168 Benchmark]: Toolchain (without parser) took 1209.79 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 86.7 MB in the beginning and 131.7 MB in the end (delta: -45.0 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:15,076 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:25:15,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.43 ms. Allocated memory is still 138.9 MB. Free memory was 86.5 MB in the beginning and 77.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:15,079 INFO L168 Benchmark]: Boogie Preprocessor took 132.79 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 77.2 MB in the beginning and 177.2 MB in the end (delta: -100.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:15,079 INFO L168 Benchmark]: RCFGBuilder took 235.67 ms. Allocated memory is still 199.8 MB. Free memory was 177.2 MB in the beginning and 166.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:15,080 INFO L168 Benchmark]: TraceAbstraction took 607.73 ms. Allocated memory is still 199.8 MB. Free memory was 165.6 MB in the beginning and 131.7 MB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:15,085 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 105.0 MB in the beginning and 104.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 229.43 ms. Allocated memory is still 138.9 MB. Free memory was 86.5 MB in the beginning and 77.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.79 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 77.2 MB in the beginning and 177.2 MB in the end (delta: -100.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 235.67 ms. Allocated memory is still 199.8 MB. Free memory was 177.2 MB in the beginning and 166.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 607.73 ms. Allocated memory is still 199.8 MB. Free memory was 165.6 MB in the beginning and 131.7 MB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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, 20 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 11 SDslu, 79 SDs, 0 SdLazy, 25 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 455 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...