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/Problem17_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 21:22:54,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 21:22:54,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 21:22:54,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 21:22:54,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 21:22:54,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 21:22:54,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 21:22:54,902 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 21:22:54,926 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 21:22:54,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 21:22:54,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 21:22:54,927 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 21:22:54,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 21:22:54,929 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 21:22:54,929 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 21:22:54,929 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 21:22:54,929 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 21:22:54,930 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 21:22:54,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 21:22:54,930 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 21:22:54,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 21:22:54,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 21:22:54,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 21:22:54,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 21:22:54,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 21:22:54,933 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 21:22:54,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 21:22:54,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 21:22:54,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 21:22:54,935 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 21:22:54,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 21:22:54,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 21:22:54,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 21:22:54,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 21:22:54,936 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 21:22:54,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 21:22:54,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 21:22:54,937 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 21:22:54,985 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 21:22:54,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 21:22:55,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 21:22:55,002 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 21:22:55,003 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 21:22:55,003 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label35.c [2019-09-09 21:22:55,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad0130281/bb53a7dde91e4a0c9319d9202fe9f1fe/FLAG27db34849 [2019-09-09 21:22:55,782 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 21:22:55,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label35.c [2019-09-09 21:22:55,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad0130281/bb53a7dde91e4a0c9319d9202fe9f1fe/FLAG27db34849 [2019-09-09 21:22:55,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad0130281/bb53a7dde91e4a0c9319d9202fe9f1fe [2019-09-09 21:22:55,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 21:22:55,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 21:22:55,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 21:22:55,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 21:22:55,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 21:22:55,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 09:22:55" (1/1) ... [2019-09-09 21:22:55,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7e4e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:55, skipping insertion in model container [2019-09-09 21:22:55,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 09:22:55" (1/1) ... [2019-09-09 21:22:55,917 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 21:22:56,019 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 21:22:57,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 21:22:57,072 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 21:22:57,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 21:22:57,522 INFO L192 MainTranslator]: Completed translation [2019-09-09 21:22:57,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:57 WrapperNode [2019-09-09 21:22:57,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 21:22:57,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 21:22:57,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 21:22:57,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 21:22:57,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:57" (1/1) ... [2019-09-09 21:22:57,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:57" (1/1) ... [2019-09-09 21:22:57,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:57" (1/1) ... [2019-09-09 21:22:57,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:57" (1/1) ... [2019-09-09 21:22:57,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:57" (1/1) ... [2019-09-09 21:22:57,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:57" (1/1) ... [2019-09-09 21:22:57,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:57" (1/1) ... [2019-09-09 21:22:57,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 21:22:57,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 21:22:57,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 21:22:57,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 21:22:57,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:57" (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 21:22:57,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 21:22:57,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 21:22:57,934 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 21:22:57,934 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 21:22:57,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 21:22:57,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 21:22:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 21:22:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 21:22:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 21:22:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 21:22:57,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 21:22:57,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 21:22:57,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 21:23:02,025 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 21:23:02,025 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 21:23:02,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 09:23:02 BoogieIcfgContainer [2019-09-09 21:23:02,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 21:23:02,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 21:23:02,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 21:23:02,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 21:23:02,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 09:22:55" (1/3) ... [2019-09-09 21:23:02,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed80ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 09:23:02, skipping insertion in model container [2019-09-09 21:23:02,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 09:22:57" (2/3) ... [2019-09-09 21:23:02,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed80ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 09:23:02, skipping insertion in model container [2019-09-09 21:23:02,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 09:23:02" (3/3) ... [2019-09-09 21:23:02,047 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label35.c [2019-09-09 21:23:02,060 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 21:23:02,073 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 21:23:02,093 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 21:23:02,129 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 21:23:02,129 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 21:23:02,129 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 21:23:02,130 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 21:23:02,130 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 21:23:02,130 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 21:23:02,130 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 21:23:02,130 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 21:23:02,182 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2019-09-09 21:23:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-09 21:23:02,193 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 21:23:02,194 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 21:23:02,196 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 21:23:02,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:23:02,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1938156481, now seen corresponding path program 1 times [2019-09-09 21:23:02,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 21:23:02,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:02,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 21:23:02,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:02,265 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 21:23:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 21:23:02,505 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 21:23:02,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 21:23:02,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 21:23:02,508 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 21:23:02,514 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 21:23:02,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 21:23:02,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 21:23:02,533 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2019-09-09 21:23:08,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 21:23:08,752 INFO L93 Difference]: Finished difference Result 1563 states and 2716 transitions. [2019-09-09 21:23:08,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 21:23:08,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-09-09 21:23:08,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 21:23:08,786 INFO L225 Difference]: With dead ends: 1563 [2019-09-09 21:23:08,786 INFO L226 Difference]: Without dead ends: 1476 [2019-09-09 21:23:08,788 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 21:23:08,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2019-09-09 21:23:08,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 990. [2019-09-09 21:23:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2019-09-09 21:23:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1715 transitions. [2019-09-09 21:23:08,918 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1715 transitions. Word has length 13 [2019-09-09 21:23:08,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 21:23:08,919 INFO L475 AbstractCegarLoop]: Abstraction has 990 states and 1715 transitions. [2019-09-09 21:23:08,919 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 21:23:08,919 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1715 transitions. [2019-09-09 21:23:08,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-09 21:23:08,923 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 21:23:08,923 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] [2019-09-09 21:23:08,923 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 21:23:08,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:23:08,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1531265513, now seen corresponding path program 1 times [2019-09-09 21:23:08,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 21:23:08,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:08,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 21:23:08,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:08,926 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 21:23:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 21:23:09,143 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 21:23:09,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 21:23:09,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 21:23:09,144 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 21:23:09,146 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 21:23:09,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 21:23:09,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 21:23:09,147 INFO L87 Difference]: Start difference. First operand 990 states and 1715 transitions. Second operand 5 states. [2019-09-09 21:23:13,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 21:23:13,708 INFO L93 Difference]: Finished difference Result 1919 states and 3013 transitions. [2019-09-09 21:23:13,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 21:23:13,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2019-09-09 21:23:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 21:23:13,726 INFO L225 Difference]: With dead ends: 1919 [2019-09-09 21:23:13,726 INFO L226 Difference]: Without dead ends: 1919 [2019-09-09 21:23:13,727 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 21:23:13,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2019-09-09 21:23:13,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1895. [2019-09-09 21:23:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2019-09-09 21:23:13,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2965 transitions. [2019-09-09 21:23:13,820 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2965 transitions. Word has length 84 [2019-09-09 21:23:13,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 21:23:13,821 INFO L475 AbstractCegarLoop]: Abstraction has 1895 states and 2965 transitions. [2019-09-09 21:23:13,822 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 21:23:13,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2965 transitions. [2019-09-09 21:23:13,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-09 21:23:13,828 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 21:23:13,829 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] [2019-09-09 21:23:13,829 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 21:23:13,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:23:13,830 INFO L82 PathProgramCache]: Analyzing trace with hash 198330217, now seen corresponding path program 1 times [2019-09-09 21:23:13,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 21:23:13,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:13,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 21:23:13,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:13,833 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 21:23:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 21:23:14,019 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 21:23:14,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 21:23:14,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 21:23:14,020 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 21:23:14,021 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 21:23:14,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 21:23:14,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 21:23:14,022 INFO L87 Difference]: Start difference. First operand 1895 states and 2965 transitions. Second operand 3 states. [2019-09-09 21:23:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 21:23:17,798 INFO L93 Difference]: Finished difference Result 3668 states and 5198 transitions. [2019-09-09 21:23:17,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 21:23:17,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2019-09-09 21:23:17,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 21:23:17,820 INFO L225 Difference]: With dead ends: 3668 [2019-09-09 21:23:17,821 INFO L226 Difference]: Without dead ends: 3668 [2019-09-09 21:23:17,822 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 21:23:17,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2019-09-09 21:23:17,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 3665. [2019-09-09 21:23:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3665 states. [2019-09-09 21:23:17,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 5192 transitions. [2019-09-09 21:23:17,911 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 5192 transitions. Word has length 87 [2019-09-09 21:23:17,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 21:23:17,912 INFO L475 AbstractCegarLoop]: Abstraction has 3665 states and 5192 transitions. [2019-09-09 21:23:17,912 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 21:23:17,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 5192 transitions. [2019-09-09 21:23:17,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-09 21:23:17,916 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 21:23:17,916 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] [2019-09-09 21:23:17,916 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 21:23:17,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:23:17,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1478248781, now seen corresponding path program 1 times [2019-09-09 21:23:17,917 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 21:23:17,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:17,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 21:23:17,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:17,918 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 21:23:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 21:23:18,069 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 21:23:18,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 21:23:18,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-09 21:23:18,070 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 21:23:18,072 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-09 21:23:18,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-09 21:23:18,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-09 21:23:18,073 INFO L87 Difference]: Start difference. First operand 3665 states and 5192 transitions. Second operand 7 states. [2019-09-09 21:23:27,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 21:23:27,771 INFO L93 Difference]: Finished difference Result 8958 states and 13527 transitions. [2019-09-09 21:23:27,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-09 21:23:27,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2019-09-09 21:23:27,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 21:23:27,832 INFO L225 Difference]: With dead ends: 8958 [2019-09-09 21:23:27,832 INFO L226 Difference]: Without dead ends: 8958 [2019-09-09 21:23:27,833 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-09 21:23:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8958 states. [2019-09-09 21:23:28,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8958 to 8859. [2019-09-09 21:23:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8859 states. [2019-09-09 21:23:28,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8859 states to 8859 states and 12662 transitions. [2019-09-09 21:23:28,108 INFO L78 Accepts]: Start accepts. Automaton has 8859 states and 12662 transitions. Word has length 114 [2019-09-09 21:23:28,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 21:23:28,108 INFO L475 AbstractCegarLoop]: Abstraction has 8859 states and 12662 transitions. [2019-09-09 21:23:28,109 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-09 21:23:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 8859 states and 12662 transitions. [2019-09-09 21:23:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-09 21:23:28,112 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 21:23:28,112 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] [2019-09-09 21:23:28,112 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 21:23:28,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:23:28,113 INFO L82 PathProgramCache]: Analyzing trace with hash 718754546, now seen corresponding path program 1 times [2019-09-09 21:23:28,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 21:23:28,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:28,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 21:23:28,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:28,114 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 21:23:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 21:23:28,224 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 21:23:28,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 21:23:28,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 21:23:28,225 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 21:23:28,225 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 21:23:28,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 21:23:28,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 21:23:28,226 INFO L87 Difference]: Start difference. First operand 8859 states and 12662 transitions. Second operand 5 states. [2019-09-09 21:23:34,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 21:23:34,196 INFO L93 Difference]: Finished difference Result 15692 states and 22235 transitions. [2019-09-09 21:23:34,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 21:23:34,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2019-09-09 21:23:34,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 21:23:34,300 INFO L225 Difference]: With dead ends: 15692 [2019-09-09 21:23:34,300 INFO L226 Difference]: Without dead ends: 15692 [2019-09-09 21:23:34,301 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 21:23:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15692 states. [2019-09-09 21:23:34,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15692 to 15482. [2019-09-09 21:23:34,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15482 states. [2019-09-09 21:23:34,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15482 states to 15482 states and 21448 transitions. [2019-09-09 21:23:34,936 INFO L78 Accepts]: Start accepts. Automaton has 15482 states and 21448 transitions. Word has length 126 [2019-09-09 21:23:34,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 21:23:34,936 INFO L475 AbstractCegarLoop]: Abstraction has 15482 states and 21448 transitions. [2019-09-09 21:23:34,936 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 21:23:34,937 INFO L276 IsEmpty]: Start isEmpty. Operand 15482 states and 21448 transitions. [2019-09-09 21:23:34,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-09-09 21:23:34,940 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 21:23:34,941 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 21:23:34,941 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 21:23:34,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:23:34,942 INFO L82 PathProgramCache]: Analyzing trace with hash -881925618, now seen corresponding path program 1 times [2019-09-09 21:23:34,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 21:23:34,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:34,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 21:23:34,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:34,947 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 21:23:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 21:23:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-09-09 21:23:35,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 21:23:35,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 21:23:35,140 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 21:23:35,141 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 21:23:35,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 21:23:35,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 21:23:35,142 INFO L87 Difference]: Start difference. First operand 15482 states and 21448 transitions. Second operand 3 states. [2019-09-09 21:23:38,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 21:23:38,405 INFO L93 Difference]: Finished difference Result 22611 states and 30372 transitions. [2019-09-09 21:23:38,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 21:23:38,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-09-09 21:23:38,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 21:23:39,204 INFO L225 Difference]: With dead ends: 22611 [2019-09-09 21:23:39,205 INFO L226 Difference]: Without dead ends: 22611 [2019-09-09 21:23:39,205 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 21:23:39,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22611 states. [2019-09-09 21:23:39,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22611 to 22599. [2019-09-09 21:23:39,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22599 states. [2019-09-09 21:23:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22599 states to 22599 states and 30342 transitions. [2019-09-09 21:23:39,694 INFO L78 Accepts]: Start accepts. Automaton has 22599 states and 30342 transitions. Word has length 193 [2019-09-09 21:23:39,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 21:23:39,696 INFO L475 AbstractCegarLoop]: Abstraction has 22599 states and 30342 transitions. [2019-09-09 21:23:39,696 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 21:23:39,696 INFO L276 IsEmpty]: Start isEmpty. Operand 22599 states and 30342 transitions. [2019-09-09 21:23:39,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-09-09 21:23:39,700 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 21:23:39,701 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 21:23:39,701 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 21:23:39,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:23:39,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1904829366, now seen corresponding path program 1 times [2019-09-09 21:23:39,706 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 21:23:39,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:39,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 21:23:39,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 21:23:39,710 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 21:23:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 21:23:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-09 21:23:39,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 21:23:39,944 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 21:23:39,945 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2019-09-09 21:23:39,948 INFO L207 CegarAbsIntRunner]: [0], [1], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1400], [2279], [2283], [2292], [2296], [2298], [2305], [2306], [2307], [2309], [2310] [2019-09-09 21:23:40,033 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 21:23:40,034 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 21:23:43,013 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 21:23:51,709 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 21:23:51,712 INFO L272 AbstractInterpreter]: Visited 121 different actions 237 times. Merged at 4 different actions 5 times. Never widened. Performed 468 root evaluator evaluations with a maximum evaluation depth of 15. Performed 468 inverse root evaluator evaluations with a maximum inverse evaluation depth of 15. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2019-09-09 21:23:51,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 21:23:51,716 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 21:23:56,298 INFO L227 lantSequenceWeakener]: Weakened 197 states. On average, predicates are now at 74.82% of their original sizes. [2019-09-09 21:23:56,298 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 21:23:56,437 INFO L420 sIntCurrentIteration]: We unified 199 AI predicates to 199 [2019-09-09 21:23:56,438 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 21:23:56,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 21:23:56,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2019-09-09 21:23:56,439 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 21:23:56,440 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-09 21:23:56,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-09 21:23:56,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2019-09-09 21:23:56,440 INFO L87 Difference]: Start difference. First operand 22599 states and 30342 transitions. Second operand 12 states.