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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 07:56:49,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 07:56:49,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 07:56:49,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 07:56:49,429 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 07:56:49,443 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 07:56:49,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 07:56:49,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 07:56:49,444 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 07:56:49,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 07:56:49,444 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 07:56:49,445 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 07:56:49,445 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 07:56:49,445 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 07:56:49,445 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 07:56:49,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 07:56:49,446 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 07:56:49,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 07:56:49,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 07:56:49,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 07:56:49,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 07:56:49,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 07:56:49,448 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 07:56:49,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 07:56:49,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 07:56:49,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 07:56:49,449 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 07:56:49,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 07:56:49,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 07:56:49,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 07:56:49,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 07:56:49,450 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 07:56:49,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 07:56:49,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 07:56:49,451 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 07:56:49,500 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 07:56:49,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 07:56:49,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 07:56:49,516 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 07:56:49,517 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 07:56:49,517 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label44.c [2019-09-09 07:56:49,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b44b9177/1956c2b6a592406382e31e44fa731000/FLAGcc05a1b06 [2019-09-09 07:56:50,158 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 07:56:50,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label44.c [2019-09-09 07:56:50,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b44b9177/1956c2b6a592406382e31e44fa731000/FLAGcc05a1b06 [2019-09-09 07:56:50,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b44b9177/1956c2b6a592406382e31e44fa731000 [2019-09-09 07:56:50,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 07:56:50,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 07:56:50,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 07:56:50,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 07:56:50,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 07:56:50,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:56:50" (1/1) ... [2019-09-09 07:56:50,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@200cb388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:56:50, skipping insertion in model container [2019-09-09 07:56:50,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:56:50" (1/1) ... [2019-09-09 07:56:50,429 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 07:56:50,520 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 07:56:51,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 07:56:51,399 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 07:56:51,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 07:56:51,676 INFO L192 MainTranslator]: Completed translation [2019-09-09 07:56:51,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:56:51 WrapperNode [2019-09-09 07:56:51,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 07:56:51,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 07:56:51,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 07:56:51,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 07:56:51,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:56:51" (1/1) ... [2019-09-09 07:56:51,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:56:51" (1/1) ... [2019-09-09 07:56:51,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:56:51" (1/1) ... [2019-09-09 07:56:51,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:56:51" (1/1) ... [2019-09-09 07:56:51,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:56:51" (1/1) ... [2019-09-09 07:56:51,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:56:51" (1/1) ... [2019-09-09 07:56:51,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:56:51" (1/1) ... [2019-09-09 07:56:51,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 07:56:51,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 07:56:51,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 07:56:51,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 07:56:51,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:56:51" (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 07:56:51,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 07:56:51,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 07:56:51,970 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 07:56:51,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 07:56:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 07:56:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 07:56:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 07:56:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 07:56:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 07:56:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 07:56:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 07:56:54,124 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 07:56:54,125 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 07:56:54,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:56:54 BoogieIcfgContainer [2019-09-09 07:56:54,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 07:56:54,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 07:56:54,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 07:56:54,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 07:56:54,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 07:56:50" (1/3) ... [2019-09-09 07:56:54,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457b6b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:56:54, skipping insertion in model container [2019-09-09 07:56:54,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:56:51" (2/3) ... [2019-09-09 07:56:54,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457b6b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:56:54, skipping insertion in model container [2019-09-09 07:56:54,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:56:54" (3/3) ... [2019-09-09 07:56:54,135 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label44.c [2019-09-09 07:56:54,146 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 07:56:54,154 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 07:56:54,172 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 07:56:54,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 07:56:54,199 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 07:56:54,199 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 07:56:54,199 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 07:56:54,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 07:56:54,199 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 07:56:54,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 07:56:54,200 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 07:56:54,224 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-09-09 07:56:54,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-09-09 07:56:54,244 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:56:54,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:56:54,247 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:56:54,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:56:54,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1663544320, now seen corresponding path program 1 times [2019-09-09 07:56:54,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:56:54,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:56:54,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:56:54,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:56:54,307 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:56:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:56:55,163 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 07:56:55,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:56:55,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 07:56:55,166 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:56:55,173 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 07:56:55,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 07:56:55,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 07:56:55,194 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2019-09-09 07:56:57,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:56:57,359 INFO L93 Difference]: Finished difference Result 777 states and 1279 transitions. [2019-09-09 07:56:57,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 07:56:57,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2019-09-09 07:56:57,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:56:57,386 INFO L225 Difference]: With dead ends: 777 [2019-09-09 07:56:57,386 INFO L226 Difference]: Without dead ends: 691 [2019-09-09 07:56:57,388 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 07:56:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-09-09 07:56:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 463. [2019-09-09 07:56:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-09-09 07:56:57,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 743 transitions. [2019-09-09 07:56:57,484 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 743 transitions. Word has length 183 [2019-09-09 07:56:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:56:57,486 INFO L475 AbstractCegarLoop]: Abstraction has 463 states and 743 transitions. [2019-09-09 07:56:57,486 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 07:56:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 743 transitions. [2019-09-09 07:56:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-09-09 07:56:57,495 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:56:57,495 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:56:57,496 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:56:57,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:56:57,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1553483833, now seen corresponding path program 1 times [2019-09-09 07:56:57,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:56:57,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:56:57,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:56:57,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:56:57,498 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:56:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:56:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:56:57,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:56:57,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 07:56:57,685 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:56:57,686 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 07:56:57,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 07:56:57,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 07:56:57,687 INFO L87 Difference]: Start difference. First operand 463 states and 743 transitions. Second operand 5 states. [2019-09-09 07:56:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:56:59,163 INFO L93 Difference]: Finished difference Result 907 states and 1403 transitions. [2019-09-09 07:56:59,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 07:56:59,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2019-09-09 07:56:59,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:56:59,171 INFO L225 Difference]: With dead ends: 907 [2019-09-09 07:56:59,171 INFO L226 Difference]: Without dead ends: 907 [2019-09-09 07:56:59,172 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 07:56:59,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2019-09-09 07:56:59,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 684. [2019-09-09 07:56:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2019-09-09 07:56:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1065 transitions. [2019-09-09 07:56:59,209 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1065 transitions. Word has length 193 [2019-09-09 07:56:59,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:56:59,209 INFO L475 AbstractCegarLoop]: Abstraction has 684 states and 1065 transitions. [2019-09-09 07:56:59,210 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 07:56:59,210 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1065 transitions. [2019-09-09 07:56:59,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-09-09 07:56:59,214 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:56:59,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:56:59,215 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:56:59,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:56:59,215 INFO L82 PathProgramCache]: Analyzing trace with hash -2080880364, now seen corresponding path program 1 times [2019-09-09 07:56:59,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:56:59,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:56:59,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:56:59,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:56:59,219 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:56:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:56:59,418 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 07:56:59,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:56:59,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 07:56:59,419 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:56:59,420 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 07:56:59,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 07:56:59,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 07:56:59,421 INFO L87 Difference]: Start difference. First operand 684 states and 1065 transitions. Second operand 3 states. [2019-09-09 07:57:00,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:57:00,527 INFO L93 Difference]: Finished difference Result 1320 states and 1986 transitions. [2019-09-09 07:57:00,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 07:57:00,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2019-09-09 07:57:00,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:57:00,536 INFO L225 Difference]: With dead ends: 1320 [2019-09-09 07:57:00,536 INFO L226 Difference]: Without dead ends: 1320 [2019-09-09 07:57:00,536 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 07:57:00,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2019-09-09 07:57:00,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1108. [2019-09-09 07:57:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1108 states. [2019-09-09 07:57:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1664 transitions. [2019-09-09 07:57:00,572 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1664 transitions. Word has length 195 [2019-09-09 07:57:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:57:00,573 INFO L475 AbstractCegarLoop]: Abstraction has 1108 states and 1664 transitions. [2019-09-09 07:57:00,573 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 07:57:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1664 transitions. [2019-09-09 07:57:00,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-09-09 07:57:00,578 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:57:00,578 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 07:57:00,579 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:57:00,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:57:00,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1973832714, now seen corresponding path program 1 times [2019-09-09 07:57:00,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:57:00,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:57:00,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:57:00,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:57:00,581 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:57:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:57:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 07:57:00,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 07:57:00,700 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 07:57:00,701 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 203 with the following transitions: [2019-09-09 07:57:00,704 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [16], [17], [21], [25], [29], [33], [37], [41], [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], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [933], [935], [1157], [1161], [1170], [1174], [1176], [1181], [1182], [1183], [1185], [1186] [2019-09-09 07:57:00,792 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 07:57:00,792 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)