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/loop-invgen/id_build.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:25:36,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:25:36,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:25:36,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:25:36,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:25:36,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:25:36,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:25:36,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:25:36,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:25:36,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:25:36,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:25:36,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:25:36,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:25:36,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:25:36,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:25:36,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:25:36,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:25:36,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:25:36,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:25:36,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:25:36,895 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 13:25:36,909 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:25:36,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:25:36,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:25:36,910 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:25:36,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:25:36,911 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:25:36,911 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:25:36,911 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:25:36,911 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:25:36,911 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:25:36,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:25:36,912 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:25:36,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:25:36,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:25:36,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:25:36,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:25:36,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:25:36,913 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:25:36,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:25:36,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:25:36,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:25:36,914 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:25:36,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:25:36,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:36,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:25:36,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:25:36,915 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:25:36,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:25:36,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:25:36,916 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:25:36,956 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:25:36,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:25:36,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:25:36,975 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:25:36,975 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:25:36,976 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c [2019-09-20 13:25:37,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e331a6949/4d31f8d8f9cb49bd8b0588656498418d/FLAGd24206183 [2019-09-20 13:25:37,591 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:25:37,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c [2019-09-20 13:25:37,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e331a6949/4d31f8d8f9cb49bd8b0588656498418d/FLAGd24206183 [2019-09-20 13:25:37,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e331a6949/4d31f8d8f9cb49bd8b0588656498418d [2019-09-20 13:25:37,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:25:37,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:25:37,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:37,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:25:37,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:25:37,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:37" (1/1) ... [2019-09-20 13:25:37,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd43ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:37, skipping insertion in model container [2019-09-20 13:25:37,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:37" (1/1) ... [2019-09-20 13:25:37,899 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:25:37,981 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:25:38,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:38,851 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:25:39,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:39,094 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:25:39,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39 WrapperNode [2019-09-20 13:25:39,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:39,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:25:39,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:25:39,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:25:39,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (1/1) ... [2019-09-20 13:25:39,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:25:39,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:25:39,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:25:39,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:25:39,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (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 13:25:39,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:25:39,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:25:39,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:25:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:25:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 13:25:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:25:39,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:25:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:25:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:25:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:25:40,934 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:25:40,934 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-20 13:25:40,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:40 BoogieIcfgContainer [2019-09-20 13:25:40,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:25:40,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:25:40,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:25:40,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:25:40,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:25:37" (1/3) ... [2019-09-20 13:25:40,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28208403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:40, skipping insertion in model container [2019-09-20 13:25:40,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:39" (2/3) ... [2019-09-20 13:25:40,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28208403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:40, skipping insertion in model container [2019-09-20 13:25:40,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:40" (3/3) ... [2019-09-20 13:25:40,947 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i.p+nlh-reducer.c [2019-09-20 13:25:40,957 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:25:40,966 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-09-20 13:25:40,984 INFO L252 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-09-20 13:25:41,015 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:25:41,015 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:25:41,017 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:25:41,017 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:25:41,018 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:25:41,018 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:25:41,018 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:25:41,018 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:25:41,054 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states. [2019-09-20 13:25:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-09-20 13:25:41,075 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:41,076 INFO L407 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, 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] [2019-09-20 13:25:41,078 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:41,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:41,083 INFO L82 PathProgramCache]: Analyzing trace with hash 660555009, now seen corresponding path program 1 times [2019-09-20 13:25:41,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:41,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:41,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:41,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:41,143 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:41,703 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 13:25:41,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:41,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:25:41,706 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:41,714 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:25:41,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:25:41,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:25:41,734 INFO L87 Difference]: Start difference. First operand 256 states. Second operand 5 states. [2019-09-20 13:25:42,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:42,416 INFO L93 Difference]: Finished difference Result 265 states and 499 transitions. [2019-09-20 13:25:42,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:25:42,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2019-09-20 13:25:42,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:42,442 INFO L225 Difference]: With dead ends: 265 [2019-09-20 13:25:42,442 INFO L226 Difference]: Without dead ends: 257 [2019-09-20 13:25:42,445 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:25:42,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2019-09-20 13:25:42,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 250. [2019-09-20 13:25:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2019-09-20 13:25:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 287 transitions. [2019-09-20 13:25:42,537 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 287 transitions. Word has length 141 [2019-09-20 13:25:42,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:42,541 INFO L475 AbstractCegarLoop]: Abstraction has 250 states and 287 transitions. [2019-09-20 13:25:42,541 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:25:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 287 transitions. [2019-09-20 13:25:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-09-20 13:25:42,554 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:42,554 INFO L407 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, 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, 1, 1] [2019-09-20 13:25:42,554 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:42,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1463397132, now seen corresponding path program 1 times [2019-09-20 13:25:42,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:42,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:42,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:42,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:42,561 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:42,804 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 13:25:42,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:42,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:25:42,805 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:42,807 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:25:42,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:25:42,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:25:42,809 INFO L87 Difference]: Start difference. First operand 250 states and 287 transitions. Second operand 5 states. [2019-09-20 13:25:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:43,553 INFO L93 Difference]: Finished difference Result 260 states and 300 transitions. [2019-09-20 13:25:43,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:25:43,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-09-20 13:25:43,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:43,554 INFO L225 Difference]: With dead ends: 260 [2019-09-20 13:25:43,554 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:25:43,555 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:25:43,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:25:43,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:25:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:25:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:25:43,557 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2019-09-20 13:25:43,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:43,557 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:25:43,557 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:25:43,557 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:25:43,558 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:25:43,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:25:43 BoogieIcfgContainer [2019-09-20 13:25:43,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:25:43,566 INFO L168 Benchmark]: Toolchain (without parser) took 5682.77 ms. Allocated memory was 132.6 MB in the beginning and 265.3 MB in the end (delta: 132.6 MB). Free memory was 85.9 MB in the beginning and 196.1 MB in the end (delta: -110.2 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:43,567 INFO L168 Benchmark]: CDTParser took 1.10 ms. Allocated memory is still 132.6 MB. Free memory was 105.7 MB in the beginning and 105.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-20 13:25:43,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1211.62 ms. Allocated memory was 132.6 MB in the beginning and 200.8 MB in the end (delta: 68.2 MB). Free memory was 85.7 MB in the beginning and 157.0 MB in the end (delta: -71.3 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:43,569 INFO L168 Benchmark]: Boogie Preprocessor took 138.45 ms. Allocated memory is still 200.8 MB. Free memory was 157.0 MB in the beginning and 152.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:43,570 INFO L168 Benchmark]: RCFGBuilder took 1702.01 ms. Allocated memory was 200.8 MB in the beginning and 223.9 MB in the end (delta: 23.1 MB). Free memory was 152.3 MB in the beginning and 130.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:43,571 INFO L168 Benchmark]: TraceAbstraction took 2626.26 ms. Allocated memory was 223.9 MB in the beginning and 265.3 MB in the end (delta: 41.4 MB). Free memory was 130.2 MB in the beginning and 196.1 MB in the end (delta: -65.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:25:43,575 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10 ms. Allocated memory is still 132.6 MB. Free memory was 105.7 MB in the beginning and 105.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1211.62 ms. Allocated memory was 132.6 MB in the beginning and 200.8 MB in the end (delta: 68.2 MB). Free memory was 85.7 MB in the beginning and 157.0 MB in the end (delta: -71.3 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.45 ms. Allocated memory is still 200.8 MB. Free memory was 157.0 MB in the beginning and 152.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1702.01 ms. Allocated memory was 200.8 MB in the beginning and 223.9 MB in the end (delta: 23.1 MB). Free memory was 152.3 MB in the beginning and 130.2 MB in the end (delta: 22.1 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2626.26 ms. Allocated memory was 223.9 MB in the beginning and 265.3 MB in the end (delta: 41.4 MB). Free memory was 130.2 MB in the beginning and 196.1 MB in the end (delta: -65.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1758]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1775]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 256 locations, 2 error locations. SAFE Result, 2.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 451 SDtfs, 872 SDslu, 786 SDs, 0 SdLazy, 942 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred 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, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 282 ConstructedInterpolants, 0 QuantifiedInterpolants, 86198 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...