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/Problem19_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 22:51:56,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 22:51:56,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 22:51:56,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 22:51:56,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 22:51:56,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 22:51:56,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 22:51:56,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 22:51:56,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 22:51:56,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 22:51:56,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 22:51:56,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-09-09 22:51:56,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 22:51:56,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 22:51:56,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 22:51:56,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 22:51:56,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 22:51:56,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 22:51:56,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 22:51:56,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... 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[2019-09-09 22:51:56,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 22:51:57,005 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 22:51:57,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 22:51:57,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 22:51:57,006 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 22:51:57,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 22:51:57,006 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 22:51:57,007 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 22:51:57,007 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 22:51:57,007 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 22:51:57,007 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 22:51:57,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 22:51:57,008 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 22:51:57,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 22:51:57,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 22:51:57,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 22:51:57,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 22:51:57,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 22:51:57,009 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 22:51:57,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 22:51:57,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 22:51:57,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 22:51:57,010 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 22:51:57,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 22:51:57,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 22:51:57,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 22:51:57,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 22:51:57,011 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 22:51:57,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 22:51:57,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 22:51:57,011 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 22:51:57,039 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 22:51:57,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 22:51:57,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 22:51:57,055 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 22:51:57,056 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 22:51:57,057 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02.c [2019-09-09 22:51:57,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c90d5dd/29a78cca76a545fea4b3c71100ec794d/FLAG446b26dfb [2019-09-09 22:51:57,989 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 22:51:57,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label02.c [2019-09-09 22:51:58,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c90d5dd/29a78cca76a545fea4b3c71100ec794d/FLAG446b26dfb [2019-09-09 22:51:58,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c90d5dd/29a78cca76a545fea4b3c71100ec794d [2019-09-09 22:51:58,429 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 22:51:58,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 22:51:58,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 22:51:58,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 22:51:58,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 22:51:58,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 10:51:58" (1/1) ... [2019-09-09 22:51:58,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d390f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:51:58, skipping insertion in model container [2019-09-09 22:51:58,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 10:51:58" (1/1) ... [2019-09-09 22:51:58,446 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 22:51:58,682 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 22:52:00,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 22:52:00,989 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 22:52:02,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 22:52:02,304 INFO L192 MainTranslator]: Completed translation [2019-09-09 22:52:02,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:52:02 WrapperNode [2019-09-09 22:52:02,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 22:52:02,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 22:52:02,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 22:52:02,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 22:52:02,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:52:02" (1/1) ... [2019-09-09 22:52:02,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:52:02" (1/1) ... [2019-09-09 22:52:02,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:52:02" (1/1) ... [2019-09-09 22:52:02,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:52:02" (1/1) ... [2019-09-09 22:52:02,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:52:02" (1/1) ... [2019-09-09 22:52:02,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:52:02" (1/1) ... [2019-09-09 22:52:02,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:52:02" (1/1) ... [2019-09-09 22:52:02,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 22:52:02,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 22:52:02,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 22:52:02,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 22:52:02,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:52:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 22:52:02,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 22:52:02,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 22:52:02,966 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 22:52:02,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 22:52:02,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 22:52:02,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 22:52:02,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-09 22:52:02,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-09 22:52:02,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 22:52:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 22:52:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 22:52:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 22:52:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 22:52:02,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-09 22:52:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-09 22:52:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 22:52:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 22:52:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 22:52:02,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 22:52:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 22:52:02,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 22:52:13,011 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 22:52:13,011 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 22:52:13,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 10:52:13 BoogieIcfgContainer [2019-09-09 22:52:13,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 22:52:13,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 22:52:13,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 22:52:13,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 22:52:13,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 10:51:58" (1/3) ... [2019-09-09 22:52:13,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4878d586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 10:52:13, skipping insertion in model container [2019-09-09 22:52:13,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 10:52:02" (2/3) ... [2019-09-09 22:52:13,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4878d586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 10:52:13, skipping insertion in model container [2019-09-09 22:52:13,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 10:52:13" (3/3) ... [2019-09-09 22:52:13,023 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label02.c [2019-09-09 22:52:13,032 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 22:52:13,039 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 22:52:13,055 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 22:52:13,078 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 22:52:13,079 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 22:52:13,079 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 22:52:13,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 22:52:13,079 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 22:52:13,079 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 22:52:13,079 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 22:52:13,080 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 22:52:13,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-09 22:52:13,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-09-09 22:52:13,138 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:52:13,139 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 22:52:13,141 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:52:13,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:52:13,147 INFO L82 PathProgramCache]: Analyzing trace with hash 76783818, now seen corresponding path program 1 times [2019-09-09 22:52:13,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:52:13,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:52:13,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:52:13,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:52:13,200 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:52:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:52:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:52:13,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 22:52:13,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 22:52:13,506 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:52:13,512 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 22:52:13,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 22:52:13,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 22:52:13,529 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-09 22:52:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 22:52:24,762 INFO L93 Difference]: Finished difference Result 3260 states and 6034 transitions. [2019-09-09 22:52:24,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 22:52:24,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2019-09-09 22:52:24,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 22:52:24,809 INFO L225 Difference]: With dead ends: 3260 [2019-09-09 22:52:24,809 INFO L226 Difference]: Without dead ends: 3192 [2019-09-09 22:52:24,811 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 22:52:24,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2019-09-09 22:52:24,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 3145. [2019-09-09 22:52:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3145 states. [2019-09-09 22:52:25,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 5823 transitions. [2019-09-09 22:52:25,015 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 5823 transitions. Word has length 72 [2019-09-09 22:52:25,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 22:52:25,018 INFO L475 AbstractCegarLoop]: Abstraction has 3145 states and 5823 transitions. [2019-09-09 22:52:25,018 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 22:52:25,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 5823 transitions. [2019-09-09 22:52:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-09 22:52:25,032 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:52:25,033 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-09 22:52:25,033 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:52:25,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:52:25,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1886417653, now seen corresponding path program 1 times [2019-09-09 22:52:25,034 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:52:25,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:52:25,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:52:25,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:52:25,037 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:52:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:52:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:52:25,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 22:52:25,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 22:52:25,248 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:52:25,250 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 22:52:25,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 22:52:25,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 22:52:25,250 INFO L87 Difference]: Start difference. First operand 3145 states and 5823 transitions. Second operand 6 states. [2019-09-09 22:52:41,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 22:52:41,577 INFO L93 Difference]: Finished difference Result 6263 states and 11110 transitions. [2019-09-09 22:52:41,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 22:52:41,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2019-09-09 22:52:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 22:52:41,612 INFO L225 Difference]: With dead ends: 6263 [2019-09-09 22:52:41,613 INFO L226 Difference]: Without dead ends: 6263 [2019-09-09 22:52:41,614 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-09 22:52:41,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2019-09-09 22:52:41,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 6157. [2019-09-09 22:52:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6157 states. [2019-09-09 22:52:41,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6157 states to 6157 states and 10968 transitions. [2019-09-09 22:52:41,776 INFO L78 Accepts]: Start accepts. Automaton has 6157 states and 10968 transitions. Word has length 144 [2019-09-09 22:52:41,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 22:52:41,777 INFO L475 AbstractCegarLoop]: Abstraction has 6157 states and 10968 transitions. [2019-09-09 22:52:41,777 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 22:52:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 6157 states and 10968 transitions. [2019-09-09 22:52:41,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-09-09 22:52:41,780 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:52:41,780 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-09 22:52:41,781 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:52:41,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:52:41,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1707239182, now seen corresponding path program 1 times [2019-09-09 22:52:41,781 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:52:41,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:52:41,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:52:41,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:52:41,783 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:52:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:52:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 22:52:42,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 22:52:42,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 22:52:42,049 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:52:42,050 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 22:52:42,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 22:52:42,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 22:52:42,051 INFO L87 Difference]: Start difference. First operand 6157 states and 10968 transitions. Second operand 5 states. [2019-09-09 22:53:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 22:53:01,475 INFO L93 Difference]: Finished difference Result 12438 states and 18625 transitions. [2019-09-09 22:53:01,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 22:53:01,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2019-09-09 22:53:01,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 22:53:01,529 INFO L225 Difference]: With dead ends: 12438 [2019-09-09 22:53:01,529 INFO L226 Difference]: Without dead ends: 12438 [2019-09-09 22:53:01,530 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 22:53:01,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12438 states. [2019-09-09 22:53:01,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12438 to 12168. [2019-09-09 22:53:01,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12168 states. [2019-09-09 22:53:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12168 states to 12168 states and 18247 transitions. [2019-09-09 22:53:01,849 INFO L78 Accepts]: Start accepts. Automaton has 12168 states and 18247 transitions. Word has length 158 [2019-09-09 22:53:01,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 22:53:01,850 INFO L475 AbstractCegarLoop]: Abstraction has 12168 states and 18247 transitions. [2019-09-09 22:53:01,850 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 22:53:01,850 INFO L276 IsEmpty]: Start isEmpty. Operand 12168 states and 18247 transitions. [2019-09-09 22:53:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-09-09 22:53:01,855 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 22:53:01,856 INFO L399 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, 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, 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] [2019-09-09 22:53:01,856 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 22:53:01,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:53:01,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1586257697, now seen corresponding path program 1 times [2019-09-09 22:53:01,857 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 22:53:01,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:53:01,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 22:53:01,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 22:53:01,859 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 22:53:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 22:53:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 82 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 22:53:02,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 22:53:02,145 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 22:53:02,146 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2019-09-09 22:53:02,149 INFO L207 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5650], [5658], [5666], [5674], [5682], [5690], [5698], [5706], [5710], [5712], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5822], [5823], [5827], [5838], [5841], [6802], [6806], [6815], [6819], [6821], [6836], [6837], [6838], [6840], [6841] [2019-09-09 22:53:02,231 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 22:53:02,231 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 22:53:09,171 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 22:53:09,173 INFO L272 AbstractInterpreter]: Visited 94 different actions 94 times. Never merged. Never widened. Performed 232 root evaluator evaluations with a maximum evaluation depth of 14. Performed 232 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 22:53:09,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 22:53:09,178 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 22:53:16,944 INFO L227 lantSequenceWeakener]: Weakened 228 states. On average, predicates are now at 76.1% of their original sizes. [2019-09-09 22:53:16,944 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 22:53:17,043 INFO L420 sIntCurrentIteration]: We unified 246 AI predicates to 246 [2019-09-09 22:53:17,043 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 22:53:17,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 22:53:17,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-09-09 22:53:17,048 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 22:53:17,049 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 22:53:17,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 22:53:17,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-09 22:53:17,050 INFO L87 Difference]: Start difference. First operand 12168 states and 18247 transitions. Second operand 10 states. [2019-09-09 22:56:24,295 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.