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/Problem11_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 19:22:35,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 19:22:35,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 19:22:35,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 19:22:35,962 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 [2019-10-02 19:22:35,977 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 19:22:35,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 19:22:35,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 19:22:35,978 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 19:22:35,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 19:22:35,979 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 19:22:35,979 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 19:22:35,979 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 19:22:35,980 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 19:22:35,980 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 19:22:35,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 19:22:35,981 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 19:22:35,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 19:22:35,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 19:22:35,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 19:22:35,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 19:22:35,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 19:22:35,982 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 19:22:35,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 19:22:35,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 19:22:35,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 19:22:35,983 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 19:22:35,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 19:22:35,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 19:22:35,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 19:22:35,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 19:22:35,984 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 19:22:35,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 19:22:35,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 19:22:35,985 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 19:22:36,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 19:22:36,031 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 19:22:36,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 19:22:36,037 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 19:22:36,037 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 19:22:36,038 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label03.c [2019-10-02 19:22:36,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8daf475/ab61a40e2d8d42e2b4e9ebc207d8020e/FLAGf3571f636 [2019-10-02 19:22:36,696 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 19:22:36,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label03.c [2019-10-02 19:22:36,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8daf475/ab61a40e2d8d42e2b4e9ebc207d8020e/FLAGf3571f636 [2019-10-02 19:22:36,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8daf475/ab61a40e2d8d42e2b4e9ebc207d8020e [2019-10-02 19:22:36,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 19:22:36,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 19:22:36,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 19:22:36,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 19:22:36,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 19:22:36,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 07:22:36" (1/1) ... [2019-10-02 19:22:36,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284a4b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:22:36, skipping insertion in model container [2019-10-02 19:22:36,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 07:22:36" (1/1) ... [2019-10-02 19:22:36,974 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 19:22:37,030 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 19:22:37,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 19:22:37,714 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 19:22:37,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 19:22:37,898 INFO L192 MainTranslator]: Completed translation [2019-10-02 19:22:37,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:22:37 WrapperNode [2019-10-02 19:22:37,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 19:22:37,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 19:22:37,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 19:22:37,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 19:22:37,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:22:37" (1/1) ... [2019-10-02 19:22:37,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:22:37" (1/1) ... [2019-10-02 19:22:37,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:22:37" (1/1) ... [2019-10-02 19:22:37,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:22:37" (1/1) ... [2019-10-02 19:22:38,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:22:37" (1/1) ... [2019-10-02 19:22:38,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:22:37" (1/1) ... [2019-10-02 19:22:38,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:22:37" (1/1) ... [2019-10-02 19:22:38,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 19:22:38,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 19:22:38,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 19:22:38,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 19:22:38,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:22:37" (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 [2019-10-02 19:22:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 19:22:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 19:22:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 19:22:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 19:22:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 19:22:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 19:22:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 19:22:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 19:22:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 19:22:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 19:22:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 19:22:40,023 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 19:22:40,024 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 19:22:40,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 07:22:40 BoogieIcfgContainer [2019-10-02 19:22:40,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 19:22:40,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 19:22:40,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 19:22:40,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 19:22:40,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 07:22:36" (1/3) ... [2019-10-02 19:22:40,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5d026a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 07:22:40, skipping insertion in model container [2019-10-02 19:22:40,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 07:22:37" (2/3) ... [2019-10-02 19:22:40,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5d026a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 07:22:40, skipping insertion in model container [2019-10-02 19:22:40,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 07:22:40" (3/3) ... [2019-10-02 19:22:40,036 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label03.c [2019-10-02 19:22:40,047 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 19:22:40,057 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 19:22:40,078 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 19:22:40,109 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 19:22:40,109 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 19:22:40,109 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 19:22:40,110 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 19:22:40,110 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 19:22:40,111 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 19:22:40,112 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 19:22:40,112 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 19:22:40,156 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-02 19:22:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-02 19:22:40,171 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:22:40,172 INFO L411 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] [2019-10-02 19:22:40,175 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:22:40,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:22:40,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1474349029, now seen corresponding path program 1 times [2019-10-02 19:22:40,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:22:40,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:22:40,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:22:40,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:22:40,250 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:22:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:22:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:22:40,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:22:40,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 19:22:40,653 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:22:40,659 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 19:22:40,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 19:22:40,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 19:22:40,677 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2019-10-02 19:22:42,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:22:42,820 INFO L93 Difference]: Finished difference Result 695 states and 994 transitions. [2019-10-02 19:22:42,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 19:22:42,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2019-10-02 19:22:42,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:22:42,855 INFO L225 Difference]: With dead ends: 695 [2019-10-02 19:22:42,856 INFO L226 Difference]: Without dead ends: 622 [2019-10-02 19:22:42,858 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 19:22:42,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-10-02 19:22:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-10-02 19:22:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-10-02 19:22:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 880 transitions. [2019-10-02 19:22:42,958 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 880 transitions. Word has length 36 [2019-10-02 19:22:42,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:22:42,958 INFO L475 AbstractCegarLoop]: Abstraction has 622 states and 880 transitions. [2019-10-02 19:22:42,958 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 19:22:42,959 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 880 transitions. [2019-10-02 19:22:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-02 19:22:42,964 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:22:42,965 INFO L411 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] [2019-10-02 19:22:42,965 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:22:42,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:22:42,966 INFO L82 PathProgramCache]: Analyzing trace with hash -465501430, now seen corresponding path program 1 times [2019-10-02 19:22:42,966 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:22:42,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:22:42,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:22:42,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:22:42,968 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:22:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:22:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:22:43,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:22:43,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 19:22:43,256 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:22:43,258 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 19:22:43,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 19:22:43,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-02 19:22:43,259 INFO L87 Difference]: Start difference. First operand 622 states and 880 transitions. Second operand 6 states. [2019-10-02 19:22:45,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:22:45,103 INFO L93 Difference]: Finished difference Result 1223 states and 1623 transitions. [2019-10-02 19:22:45,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 19:22:45,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2019-10-02 19:22:45,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:22:45,116 INFO L225 Difference]: With dead ends: 1223 [2019-10-02 19:22:45,116 INFO L226 Difference]: Without dead ends: 1223 [2019-10-02 19:22:45,117 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-02 19:22:45,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2019-10-02 19:22:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1210. [2019-10-02 19:22:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2019-10-02 19:22:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1601 transitions. [2019-10-02 19:22:45,181 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1601 transitions. Word has length 116 [2019-10-02 19:22:45,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:22:45,182 INFO L475 AbstractCegarLoop]: Abstraction has 1210 states and 1601 transitions. [2019-10-02 19:22:45,182 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 19:22:45,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1601 transitions. [2019-10-02 19:22:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-02 19:22:45,188 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:22:45,188 INFO L411 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] [2019-10-02 19:22:45,188 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:22:45,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:22:45,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1153470222, now seen corresponding path program 1 times [2019-10-02 19:22:45,189 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:22:45,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:22:45,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:22:45,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:22:45,191 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:22:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:22:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 19:22:45,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:22:45,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 19:22:45,360 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:22:45,362 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 19:22:45,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 19:22:45,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 19:22:45,364 INFO L87 Difference]: Start difference. First operand 1210 states and 1601 transitions. Second operand 4 states. [2019-10-02 19:22:47,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:22:47,213 INFO L93 Difference]: Finished difference Result 3324 states and 4344 transitions. [2019-10-02 19:22:47,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 19:22:47,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2019-10-02 19:22:47,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:22:47,245 INFO L225 Difference]: With dead ends: 3324 [2019-10-02 19:22:47,246 INFO L226 Difference]: Without dead ends: 3324 [2019-10-02 19:22:47,246 INFO L640 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 [2019-10-02 19:22:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2019-10-02 19:22:47,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 3303. [2019-10-02 19:22:47,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3303 states. [2019-10-02 19:22:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 4304 transitions. [2019-10-02 19:22:47,424 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 4304 transitions. Word has length 130 [2019-10-02 19:22:47,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:22:47,436 INFO L475 AbstractCegarLoop]: Abstraction has 3303 states and 4304 transitions. [2019-10-02 19:22:47,436 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 19:22:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 4304 transitions. [2019-10-02 19:22:47,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-02 19:22:47,450 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:22:47,451 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2019-10-02 19:22:47,451 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:22:47,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:22:47,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1553674653, now seen corresponding path program 1 times [2019-10-02 19:22:47,452 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:22:47,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:22:47,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:22:47,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:22:47,456 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:22:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:22:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-02 19:22:47,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 19:22:47,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 19:22:47,679 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:22:47,679 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 19:22:47,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 19:22:47,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 19:22:47,680 INFO L87 Difference]: Start difference. First operand 3303 states and 4304 transitions. Second operand 3 states. [2019-10-02 19:22:48,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 19:22:48,830 INFO L93 Difference]: Finished difference Result 4825 states and 6381 transitions. [2019-10-02 19:22:48,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 19:22:48,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2019-10-02 19:22:48,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 19:22:48,867 INFO L225 Difference]: With dead ends: 4825 [2019-10-02 19:22:48,868 INFO L226 Difference]: Without dead ends: 4825 [2019-10-02 19:22:48,868 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 19:22:48,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2019-10-02 19:22:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4635. [2019-10-02 19:22:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4635 states. [2019-10-02 19:22:49,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 6137 transitions. [2019-10-02 19:22:49,134 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 6137 transitions. Word has length 232 [2019-10-02 19:22:49,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 19:22:49,136 INFO L475 AbstractCegarLoop]: Abstraction has 4635 states and 6137 transitions. [2019-10-02 19:22:49,137 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 19:22:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 6137 transitions. [2019-10-02 19:22:49,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2019-10-02 19:22:49,147 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 19:22:49,147 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-02 19:22:49,147 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 19:22:49,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:22:49,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1682198646, now seen corresponding path program 1 times [2019-10-02 19:22:49,148 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 19:22:49,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:22:49,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 19:22:49,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 19:22:49,150 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 19:22:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 19:22:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 241 proven. 76 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 19:22:49,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 19:22:49,486 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 19:22:49,488 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 311 with the following transitions: [2019-10-02 19:22:49,491 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [530], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1097], [1101], [1103], [1108], [1109], [1110], [1112], [1113] [2019-10-02 19:22:49,576 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 19:22:49,576 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 19:25:32,667 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-02 19:29:55,041 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 19:29:55,048 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 4 different actions 7 times. Never widened. Performed 896 root evaluator evaluations with a maximum evaluation depth of 17. Performed 896 inverse root evaluator evaluations with a maximum inverse evaluation depth of 17. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2019-10-02 19:29:55,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 19:29:55,058 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 19:33:03,615 INFO L227 lantSequenceWeakener]: Weakened 307 states. On average, predicates are now at 73.24% of their original sizes. [2019-10-02 19:33:03,615 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 19:33:03,720 INFO L420 sIntCurrentIteration]: We unified 309 AI predicates to 309 [2019-10-02 19:33:03,720 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 19:33:03,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 19:33:03,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-10-02 19:33:03,721 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 19:33:03,722 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 19:33:03,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 19:33:03,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-02 19:33:03,723 INFO L87 Difference]: Start difference. First operand 4635 states and 6137 transitions. Second operand 10 states.