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_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 06:39:37,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 06:39:37,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 06:39:37,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 06:39:37,172 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 06:39:37,187 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 06:39:37,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 06:39:37,187 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 06:39:37,188 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 06:39:37,188 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 06:39:37,188 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 06:39:37,189 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 06:39:37,189 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 06:39:37,189 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 06:39:37,189 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 06:39:37,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 06:39:37,190 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 06:39:37,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 06:39:37,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 06:39:37,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 06:39:37,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 06:39:37,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 06:39:37,191 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 06:39:37,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 06:39:37,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 06:39:37,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 06:39:37,192 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 06:39:37,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 06:39:37,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 06:39:37,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 06:39:37,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 06:39:37,193 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 06:39:37,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 06:39:37,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 06:39:37,194 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 06:39:37,234 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 06:39:37,246 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 06:39:37,250 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 06:39:37,251 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 06:39:37,251 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 06:39:37,252 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2019-09-09 06:39:37,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19fc9b76d/1a02b75cd15a4733bd655937c4b6a1bc/FLAGac70f9b7d [2019-09-09 06:39:37,857 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 06:39:37,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2019-09-09 06:39:37,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19fc9b76d/1a02b75cd15a4733bd655937c4b6a1bc/FLAGac70f9b7d [2019-09-09 06:39:38,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19fc9b76d/1a02b75cd15a4733bd655937c4b6a1bc [2019-09-09 06:39:38,149 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 06:39:38,150 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 06:39:38,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 06:39:38,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 06:39:38,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 06:39:38,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:39:38" (1/1) ... [2019-09-09 06:39:38,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf01bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:39:38, skipping insertion in model container [2019-09-09 06:39:38,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:39:38" (1/1) ... [2019-09-09 06:39:38,165 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 06:39:38,219 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 06:39:38,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:39:38,741 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 06:39:38,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:39:38,902 INFO L192 MainTranslator]: Completed translation [2019-09-09 06:39:38,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:39:38 WrapperNode [2019-09-09 06:39:38,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 06:39:38,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 06:39:38,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 06:39:38,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 06:39:38,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:39:38" (1/1) ... [2019-09-09 06:39:38,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:39:38" (1/1) ... [2019-09-09 06:39:38,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:39:38" (1/1) ... [2019-09-09 06:39:38,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:39:38" (1/1) ... [2019-09-09 06:39:39,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:39:38" (1/1) ... [2019-09-09 06:39:39,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:39:38" (1/1) ... [2019-09-09 06:39:39,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:39:38" (1/1) ... [2019-09-09 06:39:39,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 06:39:39,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 06:39:39,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 06:39:39,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 06:39:39,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:39:38" (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 06:39:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 06:39:39,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 06:39:39,103 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 06:39:39,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 06:39:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 06:39:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 06:39:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 06:39:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 06:39:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 06:39:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 06:39:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 06:39:40,206 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 06:39:40,206 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 06:39:40,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:39:40 BoogieIcfgContainer [2019-09-09 06:39:40,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 06:39:40,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 06:39:40,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 06:39:40,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 06:39:40,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 06:39:38" (1/3) ... [2019-09-09 06:39:40,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f0a845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:39:40, skipping insertion in model container [2019-09-09 06:39:40,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:39:38" (2/3) ... [2019-09-09 06:39:40,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f0a845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:39:40, skipping insertion in model container [2019-09-09 06:39:40,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:39:40" (3/3) ... [2019-09-09 06:39:40,216 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label56.c [2019-09-09 06:39:40,226 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 06:39:40,235 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 06:39:40,252 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 06:39:40,282 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 06:39:40,283 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 06:39:40,283 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 06:39:40,283 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 06:39:40,283 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 06:39:40,284 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 06:39:40,284 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 06:39:40,284 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 06:39:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-09-09 06:39:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-09 06:39:40,331 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:39:40,332 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] [2019-09-09 06:39:40,334 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:39:40,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:39:40,340 INFO L82 PathProgramCache]: Analyzing trace with hash -503641322, now seen corresponding path program 1 times [2019-09-09 06:39:40,342 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:39:40,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:39:40,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:39:40,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:39:40,395 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:39:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:39:40,806 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 06:39:40,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:39:40,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 06:39:40,810 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:39:40,816 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 06:39:40,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 06:39:40,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:39:40,834 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-09-09 06:39:41,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:39:41,766 INFO L93 Difference]: Finished difference Result 346 states and 517 transitions. [2019-09-09 06:39:41,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 06:39:41,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2019-09-09 06:39:41,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:39:41,797 INFO L225 Difference]: With dead ends: 346 [2019-09-09 06:39:41,797 INFO L226 Difference]: Without dead ends: 278 [2019-09-09 06:39:41,800 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 06:39:41,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-09-09 06:39:41,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-09-09 06:39:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-09-09 06:39:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 412 transitions. [2019-09-09 06:39:41,872 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 412 transitions. Word has length 82 [2019-09-09 06:39:41,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:39:41,873 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 412 transitions. [2019-09-09 06:39:41,873 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 06:39:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 412 transitions. [2019-09-09 06:39:41,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-09 06:39:41,878 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:39:41,879 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] [2019-09-09 06:39:41,879 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:39:41,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:39:41,879 INFO L82 PathProgramCache]: Analyzing trace with hash 613251555, now seen corresponding path program 1 times [2019-09-09 06:39:41,880 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:39:41,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:39:41,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:39:41,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:39:41,881 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:39:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:39:42,006 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 06:39:42,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:39:42,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 06:39:42,006 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:39:42,008 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 06:39:42,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 06:39:42,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:39:42,009 INFO L87 Difference]: Start difference. First operand 278 states and 412 transitions. Second operand 3 states. [2019-09-09 06:39:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:39:42,527 INFO L93 Difference]: Finished difference Result 548 states and 776 transitions. [2019-09-09 06:39:42,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 06:39:42,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2019-09-09 06:39:42,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:39:42,532 INFO L225 Difference]: With dead ends: 548 [2019-09-09 06:39:42,532 INFO L226 Difference]: Without dead ends: 548 [2019-09-09 06:39:42,533 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 06:39:42,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-09-09 06:39:42,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 413. [2019-09-09 06:39:42,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2019-09-09 06:39:42,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 593 transitions. [2019-09-09 06:39:42,562 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 593 transitions. Word has length 99 [2019-09-09 06:39:42,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:39:42,562 INFO L475 AbstractCegarLoop]: Abstraction has 413 states and 593 transitions. [2019-09-09 06:39:42,562 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 06:39:42,563 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 593 transitions. [2019-09-09 06:39:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-09 06:39:42,567 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:39:42,567 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:42,567 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:39:42,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:39:42,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1499324049, now seen corresponding path program 1 times [2019-09-09 06:39:42,568 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:39:42,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:39:42,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:39:42,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:39:42,569 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:39:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:39:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:39:42,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:39:42,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 06:39:42,734 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:39:42,735 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 06:39:42,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 06:39:42,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 06:39:42,736 INFO L87 Difference]: Start difference. First operand 413 states and 593 transitions. Second operand 6 states. [2019-09-09 06:39:43,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:39:43,576 INFO L93 Difference]: Finished difference Result 709 states and 975 transitions. [2019-09-09 06:39:43,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 06:39:43,577 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2019-09-09 06:39:43,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:39:43,582 INFO L225 Difference]: With dead ends: 709 [2019-09-09 06:39:43,582 INFO L226 Difference]: Without dead ends: 709 [2019-09-09 06:39:43,583 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 06:39:43,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2019-09-09 06:39:43,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 699. [2019-09-09 06:39:43,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2019-09-09 06:39:43,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 950 transitions. [2019-09-09 06:39:43,635 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 950 transitions. Word has length 125 [2019-09-09 06:39:43,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:39:43,642 INFO L475 AbstractCegarLoop]: Abstraction has 699 states and 950 transitions. [2019-09-09 06:39:43,642 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 06:39:43,643 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 950 transitions. [2019-09-09 06:39:43,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-09-09 06:39:43,654 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:39:43,654 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:43,655 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:39:43,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:39:43,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1223806666, now seen corresponding path program 1 times [2019-09-09 06:39:43,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:39:43,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:39:43,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:39:43,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:39:43,657 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:39:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:39:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:39:43,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 06:39:43,797 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 06:39:43,798 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2019-09-09 06:39:43,801 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [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], [145], [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], [301], [303], [757], [761], [770], [774], [776], [781], [782], [783], [785], [786] [2019-09-09 06:39:43,877 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 06:39:43,877 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)