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/Problem03_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 08:05:55,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 08:05:55,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 08:05:55,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 08:05:55,645 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 08:05:55,662 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 08:05:55,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 08:05:55,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 08:05:55,663 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 08:05:55,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 08:05:55,664 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 08:05:55,664 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 08:05:55,664 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 08:05:55,665 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 08:05:55,665 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 08:05:55,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 08:05:55,666 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 08:05:55,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 08:05:55,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 08:05:55,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 08:05:55,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 08:05:55,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 08:05:55,667 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 08:05:55,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 08:05:55,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 08:05:55,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 08:05:55,668 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 08:05:55,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 08:05:55,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 08:05:55,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 08:05:55,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 08:05:55,669 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 08:05:55,669 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 08:05:55,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 08:05:55,669 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 08:05:55,707 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 08:05:55,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 08:05:55,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 08:05:55,726 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 08:05:55,727 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 08:05:55,728 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55.c [2019-09-09 08:05:55,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/386714676/c05372e9f2f24fc1aed5e6723813052c/FLAG27b5c8581 [2019-09-09 08:05:56,409 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 08:05:56,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label55.c [2019-09-09 08:05:56,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/386714676/c05372e9f2f24fc1aed5e6723813052c/FLAG27b5c8581 [2019-09-09 08:05:56,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/386714676/c05372e9f2f24fc1aed5e6723813052c [2019-09-09 08:05:56,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 08:05:56,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 08:05:56,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 08:05:56,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 08:05:56,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 08:05:56,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 08:05:56" (1/1) ... [2019-09-09 08:05:56,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adc755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:05:56, skipping insertion in model container [2019-09-09 08:05:56,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 08:05:56" (1/1) ... [2019-09-09 08:05:56,642 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 08:05:56,733 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 08:05:57,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 08:05:57,553 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 08:05:57,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 08:05:57,993 INFO L192 MainTranslator]: Completed translation [2019-09-09 08:05:57,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:05:57 WrapperNode [2019-09-09 08:05:57,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 08:05:57,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 08:05:57,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 08:05:57,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 08:05:58,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:05:57" (1/1) ... [2019-09-09 08:05:58,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:05:57" (1/1) ... [2019-09-09 08:05:58,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:05:57" (1/1) ... [2019-09-09 08:05:58,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:05:57" (1/1) ... [2019-09-09 08:05:58,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:05:57" (1/1) ... [2019-09-09 08:05:58,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:05:57" (1/1) ... [2019-09-09 08:05:58,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:05:57" (1/1) ... [2019-09-09 08:05:58,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 08:05:58,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 08:05:58,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 08:05:58,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 08:05:58,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:05:57" (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 08:05:58,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 08:05:58,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 08:05:58,253 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 08:05:58,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 08:05:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 08:05:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 08:05:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 08:05:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 08:05:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 08:05:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 08:05:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 08:06:00,172 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 08:06:00,173 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 08:06:00,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 08:06:00 BoogieIcfgContainer [2019-09-09 08:06:00,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 08:06:00,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 08:06:00,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 08:06:00,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 08:06:00,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 08:05:56" (1/3) ... [2019-09-09 08:06:00,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24475bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 08:06:00, skipping insertion in model container [2019-09-09 08:06:00,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:05:57" (2/3) ... [2019-09-09 08:06:00,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24475bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 08:06:00, skipping insertion in model container [2019-09-09 08:06:00,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 08:06:00" (3/3) ... [2019-09-09 08:06:00,189 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label55.c [2019-09-09 08:06:00,199 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 08:06:00,208 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 08:06:00,225 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 08:06:00,251 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 08:06:00,252 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 08:06:00,252 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 08:06:00,252 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 08:06:00,252 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 08:06:00,252 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 08:06:00,253 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 08:06:00,253 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 08:06:00,285 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-09-09 08:06:00,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-09-09 08:06:00,311 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 08:06:00,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:00,316 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 08:06:00,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 08:06:00,322 INFO L82 PathProgramCache]: Analyzing trace with hash -137878483, now seen corresponding path program 1 times [2019-09-09 08:06:00,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 08:06:00,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:06:00,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 08:06:00,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:06:00,379 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 08:06:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 08:06:01,160 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 08:06:01,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 08:06:01,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 08:06:01,163 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 08:06:01,171 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 08:06:01,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 08:06:01,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 08:06:01,191 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 3 states. [2019-09-09 08:06:02,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 08:06:02,704 INFO L93 Difference]: Finished difference Result 536 states and 821 transitions. [2019-09-09 08:06:02,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 08:06:02,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-09-09 08:06:02,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 08:06:02,726 INFO L225 Difference]: With dead ends: 536 [2019-09-09 08:06:02,727 INFO L226 Difference]: Without dead ends: 468 [2019-09-09 08:06:02,728 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 08:06:02,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2019-09-09 08:06:02,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 463. [2019-09-09 08:06:02,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-09-09 08:06:02,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 714 transitions. [2019-09-09 08:06:02,827 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 714 transitions. Word has length 168 [2019-09-09 08:06:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 08:06:02,828 INFO L475 AbstractCegarLoop]: Abstraction has 463 states and 714 transitions. [2019-09-09 08:06:02,829 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 08:06:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 714 transitions. [2019-09-09 08:06:02,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-09-09 08:06:02,835 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 08:06:02,836 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:02,836 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 08:06:02,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 08:06:02,837 INFO L82 PathProgramCache]: Analyzing trace with hash 967256473, now seen corresponding path program 1 times [2019-09-09 08:06:02,837 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 08:06:02,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:06:02,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 08:06:02,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:06:02,839 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 08:06:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 08:06:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 08:06:03,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 08:06:03,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 08:06:03,222 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 08:06:03,225 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 08:06:03,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 08:06:03,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 08:06:03,226 INFO L87 Difference]: Start difference. First operand 463 states and 714 transitions. Second operand 3 states. [2019-09-09 08:06:04,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 08:06:04,427 INFO L93 Difference]: Finished difference Result 890 states and 1299 transitions. [2019-09-09 08:06:04,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 08:06:04,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-09-09 08:06:04,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 08:06:04,440 INFO L225 Difference]: With dead ends: 890 [2019-09-09 08:06:04,440 INFO L226 Difference]: Without dead ends: 890 [2019-09-09 08:06:04,441 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 08:06:04,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2019-09-09 08:06:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 888. [2019-09-09 08:06:04,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2019-09-09 08:06:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1295 transitions. [2019-09-09 08:06:04,486 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1295 transitions. Word has length 180 [2019-09-09 08:06:04,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 08:06:04,487 INFO L475 AbstractCegarLoop]: Abstraction has 888 states and 1295 transitions. [2019-09-09 08:06:04,487 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 08:06:04,487 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1295 transitions. [2019-09-09 08:06:04,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-09-09 08:06:04,492 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 08:06:04,492 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:04,493 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 08:06:04,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 08:06:04,493 INFO L82 PathProgramCache]: Analyzing trace with hash -224644811, now seen corresponding path program 1 times [2019-09-09 08:06:04,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 08:06:04,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:06:04,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 08:06:04,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:06:04,495 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 08:06:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 08:06:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 08:06:04,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 08:06:04,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 08:06:04,830 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 08:06:04,830 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 08:06:04,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 08:06:04,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-09 08:06:04,831 INFO L87 Difference]: Start difference. First operand 888 states and 1295 transitions. Second operand 5 states. [2019-09-09 08:06:07,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 08:06:07,596 INFO L93 Difference]: Finished difference Result 2972 states and 4242 transitions. [2019-09-09 08:06:07,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-09 08:06:07,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2019-09-09 08:06:07,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 08:06:07,617 INFO L225 Difference]: With dead ends: 2972 [2019-09-09 08:06:07,618 INFO L226 Difference]: Without dead ends: 2972 [2019-09-09 08:06:07,618 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-09 08:06:07,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2019-09-09 08:06:07,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2962. [2019-09-09 08:06:07,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2962 states. [2019-09-09 08:06:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 4222 transitions. [2019-09-09 08:06:07,730 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 4222 transitions. Word has length 182 [2019-09-09 08:06:07,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 08:06:07,737 INFO L475 AbstractCegarLoop]: Abstraction has 2962 states and 4222 transitions. [2019-09-09 08:06:07,738 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 08:06:07,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 4222 transitions. [2019-09-09 08:06:07,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-09-09 08:06:07,767 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 08:06:07,769 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:07,769 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 08:06:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 08:06:07,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1813668049, now seen corresponding path program 1 times [2019-09-09 08:06:07,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 08:06:07,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:06:07,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 08:06:07,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:06:07,772 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 08:06:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 08:06:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 08:06:08,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 08:06:08,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-09 08:06:08,086 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 08:06:08,087 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-09 08:06:08,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-09 08:06:08,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-09 08:06:08,088 INFO L87 Difference]: Start difference. First operand 2962 states and 4222 transitions. Second operand 7 states. [2019-09-09 08:06:09,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 08:06:09,876 INFO L93 Difference]: Finished difference Result 5967 states and 10414 transitions. [2019-09-09 08:06:09,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-09 08:06:09,877 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2019-09-09 08:06:09,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 08:06:09,955 INFO L225 Difference]: With dead ends: 5967 [2019-09-09 08:06:09,955 INFO L226 Difference]: Without dead ends: 5967 [2019-09-09 08:06:09,956 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2019-09-09 08:06:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5967 states. [2019-09-09 08:06:10,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5967 to 5741. [2019-09-09 08:06:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5741 states. [2019-09-09 08:06:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 8525 transitions. [2019-09-09 08:06:10,334 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 8525 transitions. Word has length 184 [2019-09-09 08:06:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 08:06:10,334 INFO L475 AbstractCegarLoop]: Abstraction has 5741 states and 8525 transitions. [2019-09-09 08:06:10,335 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-09 08:06:10,335 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 8525 transitions. [2019-09-09 08:06:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-09-09 08:06:10,352 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 08:06:10,352 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:10,352 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 08:06:10,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 08:06:10,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1810360838, now seen corresponding path program 1 times [2019-09-09 08:06:10,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 08:06:10,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:06:10,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 08:06:10,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:06:10,355 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 08:06:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 08:06:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 08:06:10,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 08:06:10,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 08:06:10,485 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 08:06:10,485 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 08:06:10,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 08:06:10,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 08:06:10,486 INFO L87 Difference]: Start difference. First operand 5741 states and 8525 transitions. Second operand 6 states. [2019-09-09 08:06:12,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 08:06:12,574 INFO L93 Difference]: Finished difference Result 11495 states and 19295 transitions. [2019-09-09 08:06:12,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 08:06:12,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2019-09-09 08:06:12,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 08:06:12,694 INFO L225 Difference]: With dead ends: 11495 [2019-09-09 08:06:12,694 INFO L226 Difference]: Without dead ends: 11495 [2019-09-09 08:06:12,694 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 08:06:12,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11495 states. [2019-09-09 08:06:13,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11495 to 11275. [2019-09-09 08:06:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11275 states. [2019-09-09 08:06:13,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11275 states to 11275 states and 17083 transitions. [2019-09-09 08:06:13,174 INFO L78 Accepts]: Start accepts. Automaton has 11275 states and 17083 transitions. Word has length 185 [2019-09-09 08:06:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 08:06:13,175 INFO L475 AbstractCegarLoop]: Abstraction has 11275 states and 17083 transitions. [2019-09-09 08:06:13,175 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 08:06:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 11275 states and 17083 transitions. [2019-09-09 08:06:13,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-09-09 08:06:13,208 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 08:06:13,208 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:13,209 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 08:06:13,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 08:06:13,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1761152573, now seen corresponding path program 1 times [2019-09-09 08:06:13,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 08:06:13,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:06:13,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 08:06:13,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:06:13,211 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 08:06:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 08:06:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 08:06:13,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 08:06:13,449 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 08:06:13,450 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2019-09-09 08:06:13,452 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [813], [815], [1157], [1161], [1170], [1174], [1176], [1181], [1182], [1183], [1185], [1186] [2019-09-09 08:06:13,540 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 08:06:13,540 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)