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/Problem01_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 06:10:14,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 06:10:14,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 06:10:14,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 06:10:14,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 06:10:14,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 06:10:14,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 06:10:14,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 06:10:14,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 06:10:14,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 06:10:14,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 06:10:14,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 06:10:14,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 06:10:14,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 06:10:14,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 06:10:14,096 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 06:10:14,110 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 06:10:14,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 06:10:14,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 06:10:14,111 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 06:10:14,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 06:10:14,112 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 06:10:14,112 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 06:10:14,113 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 06:10:14,113 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 06:10:14,113 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 06:10:14,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 06:10:14,114 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 06:10:14,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 06:10:14,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 06:10:14,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 06:10:14,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 06:10:14,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 06:10:14,115 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 06:10:14,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 06:10:14,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 06:10:14,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 06:10:14,116 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 06:10:14,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 06:10:14,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 06:10:14,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 06:10:14,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 06:10:14,117 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 06:10:14,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 06:10:14,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 06:10:14,118 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 06:10:14,146 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 06:10:14,160 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 06:10:14,163 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 06:10:14,165 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 06:10:14,165 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 06:10:14,166 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label25.c [2019-09-09 06:10:14,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62b3108b/2ae16f4a9cdb43d78fae31012e075c65/FLAG7d2b530f0 [2019-09-09 06:10:14,779 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 06:10:14,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label25.c [2019-09-09 06:10:14,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62b3108b/2ae16f4a9cdb43d78fae31012e075c65/FLAG7d2b530f0 [2019-09-09 06:10:15,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d62b3108b/2ae16f4a9cdb43d78fae31012e075c65 [2019-09-09 06:10:15,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 06:10:15,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 06:10:15,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 06:10:15,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 06:10:15,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 06:10:15,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:10:15" (1/1) ... [2019-09-09 06:10:15,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621c7695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:10:15, skipping insertion in model container [2019-09-09 06:10:15,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:10:15" (1/1) ... [2019-09-09 06:10:15,121 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 06:10:15,187 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 06:10:15,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:10:15,688 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 06:10:15,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:10:15,843 INFO L192 MainTranslator]: Completed translation [2019-09-09 06:10:15,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:10:15 WrapperNode [2019-09-09 06:10:15,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 06:10:15,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 06:10:15,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 06:10:15,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 06:10:15,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:10:15" (1/1) ... [2019-09-09 06:10:15,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:10:15" (1/1) ... [2019-09-09 06:10:15,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:10:15" (1/1) ... [2019-09-09 06:10:15,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:10:15" (1/1) ... [2019-09-09 06:10:15,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:10:15" (1/1) ... [2019-09-09 06:10:15,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:10:15" (1/1) ... [2019-09-09 06:10:15,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:10:15" (1/1) ... [2019-09-09 06:10:15,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 06:10:15,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 06:10:15,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 06:10:15,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 06:10:15,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:10:15" (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 06:10:16,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 06:10:16,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 06:10:16,053 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 06:10:16,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 06:10:16,054 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 06:10:16,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 06:10:16,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 06:10:16,054 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 06:10:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 06:10:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 06:10:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 06:10:17,178 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 06:10:17,181 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 06:10:17,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:10:17 BoogieIcfgContainer [2019-09-09 06:10:17,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 06:10:17,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 06:10:17,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 06:10:17,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 06:10:17,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 06:10:15" (1/3) ... [2019-09-09 06:10:17,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c01ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:10:17, skipping insertion in model container [2019-09-09 06:10:17,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:10:15" (2/3) ... [2019-09-09 06:10:17,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c01ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:10:17, skipping insertion in model container [2019-09-09 06:10:17,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:10:17" (3/3) ... [2019-09-09 06:10:17,200 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label25.c [2019-09-09 06:10:17,211 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 06:10:17,221 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 06:10:17,238 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 06:10:17,268 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 06:10:17,269 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 06:10:17,269 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 06:10:17,269 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 06:10:17,269 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 06:10:17,270 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 06:10:17,270 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 06:10:17,270 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 06:10:17,302 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-09-09 06:10:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-09 06:10:17,319 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:10:17,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:17,322 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:10:17,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:10:17,328 INFO L82 PathProgramCache]: Analyzing trace with hash -665077081, now seen corresponding path program 1 times [2019-09-09 06:10:17,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:10:17,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:10:17,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:10:17,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:10:17,377 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:10:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:10:17,817 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 06:10:17,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:10:17,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 06:10:17,821 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:10:17,830 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 06:10:17,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 06:10:17,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:10:17,850 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-09-09 06:10:18,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:10:18,750 INFO L93 Difference]: Finished difference Result 346 states and 515 transitions. [2019-09-09 06:10:18,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 06:10:18,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2019-09-09 06:10:18,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:10:18,780 INFO L225 Difference]: With dead ends: 346 [2019-09-09 06:10:18,780 INFO L226 Difference]: Without dead ends: 278 [2019-09-09 06:10:18,783 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:10:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-09-09 06:10:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-09-09 06:10:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-09-09 06:10:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 406 transitions. [2019-09-09 06:10:18,866 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 406 transitions. Word has length 125 [2019-09-09 06:10:18,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:10:18,867 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 406 transitions. [2019-09-09 06:10:18,867 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 06:10:18,867 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 406 transitions. [2019-09-09 06:10:18,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-09 06:10:18,872 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:10:18,872 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 06:10:18,872 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:10:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:10:18,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1811316394, now seen corresponding path program 1 times [2019-09-09 06:10:18,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:10:18,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:10:18,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:10:18,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:10:18,876 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:10:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:10:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:10:18,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:10:18,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 06:10:18,995 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:10:18,998 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 06:10:18,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 06:10:18,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 06:10:18,999 INFO L87 Difference]: Start difference. First operand 278 states and 406 transitions. Second operand 5 states. [2019-09-09 06:10:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:10:19,737 INFO L93 Difference]: Finished difference Result 568 states and 809 transitions. [2019-09-09 06:10:19,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 06:10:19,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2019-09-09 06:10:19,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:10:19,744 INFO L225 Difference]: With dead ends: 568 [2019-09-09 06:10:19,744 INFO L226 Difference]: Without dead ends: 568 [2019-09-09 06:10:19,745 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 06:10:19,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-09-09 06:10:19,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 558. [2019-09-09 06:10:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-09-09 06:10:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 788 transitions. [2019-09-09 06:10:19,789 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 788 transitions. Word has length 134 [2019-09-09 06:10:19,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:10:19,790 INFO L475 AbstractCegarLoop]: Abstraction has 558 states and 788 transitions. [2019-09-09 06:10:19,790 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 06:10:19,790 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 788 transitions. [2019-09-09 06:10:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-09-09 06:10:19,800 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:10:19,800 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 06:10:19,800 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:10:19,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:10:19,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1203912387, now seen corresponding path program 1 times [2019-09-09 06:10:19,803 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:10:19,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:10:19,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:10:19,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:10:19,804 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:10:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:10:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:10:19,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 06:10:19,995 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 06:10:19,997 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 146 with the following transitions: [2019-09-09 06:10:20,000 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [645], [647], [757], [761], [770], [774], [776], [781], [782], [783], [785], [786] [2019-09-09 06:10:20,064 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 06:10:20,064 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)