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/Problem10_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 14:42:04,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 14:42:04,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 14:42:04,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 14:42:04,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 14:42:04,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 14:42:04,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 14:42:04,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 14:42:04,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 14:42:04,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 14:42:04,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 14:42:04,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 14:42:04,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 14:42:04,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 14:42:04,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 14:42:04,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 14:42:04,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 14:42:04,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 14:42:04,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 14:42:04,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 14:42:04,826 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 14:42:04,841 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 14:42:04,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 14:42:04,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 14:42:04,842 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 14:42:04,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 14:42:04,843 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 14:42:04,843 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 14:42:04,843 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 14:42:04,844 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 14:42:04,844 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 14:42:04,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 14:42:04,844 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 14:42:04,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 14:42:04,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 14:42:04,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 14:42:04,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 14:42:04,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 14:42:04,846 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 14:42:04,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 14:42:04,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 14:42:04,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 14:42:04,846 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 14:42:04,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 14:42:04,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 14:42:04,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 14:42:04,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 14:42:04,847 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 14:42:04,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 14:42:04,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 14:42:04,848 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 14:42:04,892 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 14:42:04,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 14:42:04,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 14:42:04,908 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 14:42:04,908 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 14:42:04,909 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2019-09-09 14:42:04,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4272672b/b839bd4055ab46ea83a36b4ae3c635cc/FLAG08c334f7e [2019-09-09 14:42:05,606 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 14:42:05,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label51.c [2019-09-09 14:42:05,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4272672b/b839bd4055ab46ea83a36b4ae3c635cc/FLAG08c334f7e [2019-09-09 14:42:05,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4272672b/b839bd4055ab46ea83a36b4ae3c635cc [2019-09-09 14:42:05,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 14:42:05,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 14:42:05,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 14:42:05,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 14:42:05,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 14:42:05,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:42:05" (1/1) ... [2019-09-09 14:42:05,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7472fefd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:42:05, skipping insertion in model container [2019-09-09 14:42:05,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:42:05" (1/1) ... [2019-09-09 14:42:05,896 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 14:42:05,964 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 14:42:06,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:42:06,552 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 14:42:06,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:42:06,759 INFO L192 MainTranslator]: Completed translation [2019-09-09 14:42:06,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:42:06 WrapperNode [2019-09-09 14:42:06,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 14:42:06,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 14:42:06,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 14:42:06,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 14:42:06,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:42:06" (1/1) ... [2019-09-09 14:42:06,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:42:06" (1/1) ... [2019-09-09 14:42:06,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:42:06" (1/1) ... [2019-09-09 14:42:06,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:42:06" (1/1) ... [2019-09-09 14:42:06,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:42:06" (1/1) ... [2019-09-09 14:42:06,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:42:06" (1/1) ... [2019-09-09 14:42:06,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:42:06" (1/1) ... [2019-09-09 14:42:06,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 14:42:06,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 14:42:06,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 14:42:06,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 14:42:06,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:42:06" (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 14:42:06,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 14:42:06,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 14:42:06,985 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 14:42:06,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 14:42:06,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 14:42:06,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 14:42:06,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 14:42:06,986 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 14:42:06,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 14:42:06,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 14:42:06,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 14:42:08,459 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 14:42:08,459 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 14:42:08,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:42:08 BoogieIcfgContainer [2019-09-09 14:42:08,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 14:42:08,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 14:42:08,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 14:42:08,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 14:42:08,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 02:42:05" (1/3) ... [2019-09-09 14:42:08,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cb4d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:42:08, skipping insertion in model container [2019-09-09 14:42:08,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:42:06" (2/3) ... [2019-09-09 14:42:08,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cb4d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:42:08, skipping insertion in model container [2019-09-09 14:42:08,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:42:08" (3/3) ... [2019-09-09 14:42:08,484 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label51.c [2019-09-09 14:42:08,498 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 14:42:08,509 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 14:42:08,527 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 14:42:08,559 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 14:42:08,560 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 14:42:08,560 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 14:42:08,561 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 14:42:08,561 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 14:42:08,561 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 14:42:08,561 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 14:42:08,561 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 14:42:08,596 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-09-09 14:42:08,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-09-09 14:42:08,611 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:42:08,613 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] [2019-09-09 14:42:08,615 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:42:08,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:42:08,623 INFO L82 PathProgramCache]: Analyzing trace with hash -689906609, now seen corresponding path program 1 times [2019-09-09 14:42:08,625 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:42:08,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:42:08,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:42:08,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:42:08,671 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:42:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:42:08,999 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 14:42:09,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:42:09,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 14:42:09,002 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:42:09,009 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 14:42:09,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 14:42:09,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 14:42:09,028 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 4 states. [2019-09-09 14:42:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:42:10,519 INFO L93 Difference]: Finished difference Result 524 states and 830 transitions. [2019-09-09 14:42:10,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 14:42:10,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2019-09-09 14:42:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:42:10,543 INFO L225 Difference]: With dead ends: 524 [2019-09-09 14:42:10,543 INFO L226 Difference]: Without dead ends: 437 [2019-09-09 14:42:10,547 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 14:42:10,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2019-09-09 14:42:10,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 294. [2019-09-09 14:42:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-09-09 14:42:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2019-09-09 14:42:10,678 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 56 [2019-09-09 14:42:10,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:42:10,679 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2019-09-09 14:42:10,680 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 14:42:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2019-09-09 14:42:10,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-09 14:42:10,696 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:42:10,696 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, 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] [2019-09-09 14:42:10,696 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:42:10,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:42:10,697 INFO L82 PathProgramCache]: Analyzing trace with hash 371731122, now seen corresponding path program 1 times [2019-09-09 14:42:10,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:42:10,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:42:10,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:42:10,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:42:10,702 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:42:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:42:10,925 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-09 14:42:10,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 14:42:10,926 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 14:42:10,927 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 127 with the following transitions: [2019-09-09 14:42:10,929 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [792], [796], [805], [809], [811], [816], [817], [818], [820], [821] [2019-09-09 14:42:10,971 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 14:42:10,972 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 14:42:15,403 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 14:42:22,100 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 14:42:22,103 INFO L272 AbstractInterpreter]: Visited 77 different actions 148 times. Merged at 4 different actions 4 times. Never widened. Performed 326 root evaluator evaluations with a maximum evaluation depth of 12. Performed 326 inverse root evaluator evaluations with a maximum inverse evaluation depth of 12. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2019-09-09 14:42:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:42:22,107 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 14:42:30,765 INFO L227 lantSequenceWeakener]: Weakened 123 states. On average, predicates are now at 73.94% of their original sizes. [2019-09-09 14:42:30,765 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 14:42:30,831 INFO L420 sIntCurrentIteration]: We unified 125 AI predicates to 125 [2019-09-09 14:42:30,831 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 14:42:30,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 14:42:30,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2019-09-09 14:42:30,833 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:42:30,834 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 14:42:30,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 14:42:30,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-09 14:42:30,835 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 10 states. [2019-09-09 14:46:58,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:46:58,421 INFO L93 Difference]: Finished difference Result 584 states and 755 transitions. [2019-09-09 14:46:58,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-09 14:46:58,421 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 126 [2019-09-09 14:46:58,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:46:58,426 INFO L225 Difference]: With dead ends: 584 [2019-09-09 14:46:58,426 INFO L226 Difference]: Without dead ends: 584 [2019-09-09 14:46:58,427 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2019-09-09 14:46:58,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-09-09 14:46:58,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2019-09-09 14:46:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-09-09 14:46:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 753 transitions. [2019-09-09 14:46:58,474 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 753 transitions. Word has length 126 [2019-09-09 14:46:58,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:46:58,476 INFO L475 AbstractCegarLoop]: Abstraction has 582 states and 753 transitions. [2019-09-09 14:46:58,476 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-09 14:46:58,476 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 753 transitions. [2019-09-09 14:46:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-09-09 14:46:58,482 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:46:58,482 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 14:46:58,483 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:46:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:46:58,484 INFO L82 PathProgramCache]: Analyzing trace with hash -37785422, now seen corresponding path program 1 times [2019-09-09 14:46:58,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:46:58,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:46:58,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:46:58,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:46:58,486 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:46:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:46:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-09-09 14:46:58,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 14:46:58,775 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 14:46:58,775 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 202 with the following transitions: [2019-09-09 14:46:58,776 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [518], [792], [796], [805], [809], [811], [816], [817], [818], [820], [821] [2019-09-09 14:46:58,791 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 14:46:58,792 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 14:47:01,818 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 14:47:38,987 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 14:47:38,988 INFO L272 AbstractInterpreter]: Visited 83 different actions 241 times. Merged at 6 different actions 12 times. Never widened. Performed 580 root evaluator evaluations with a maximum evaluation depth of 16. Performed 580 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2019-09-09 14:47:38,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:47:38,988 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 14:47:59,449 INFO L227 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 73.51% of their original sizes. [2019-09-09 14:47:59,450 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 14:47:59,521 INFO L420 sIntCurrentIteration]: We unified 200 AI predicates to 200 [2019-09-09 14:47:59,521 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 14:47:59,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 14:47:59,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2019-09-09 14:47:59,522 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:47:59,523 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 14:47:59,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 14:47:59,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-09 14:47:59,524 INFO L87 Difference]: Start difference. First operand 582 states and 753 transitions. Second operand 10 states. [2019-09-09 14:54:06,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:54:06,918 INFO L93 Difference]: Finished difference Result 737 states and 922 transitions. [2019-09-09 14:54:06,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-09 14:54:06,919 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 201 [2019-09-09 14:54:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:54:06,924 INFO L225 Difference]: With dead ends: 737 [2019-09-09 14:54:06,924 INFO L226 Difference]: Without dead ends: 737 [2019-09-09 14:54:06,924 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2019-09-09 14:54:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2019-09-09 14:54:06,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 727. [2019-09-09 14:54:06,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2019-09-09 14:54:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 910 transitions. [2019-09-09 14:54:06,947 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 910 transitions. Word has length 201 [2019-09-09 14:54:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:54:06,949 INFO L475 AbstractCegarLoop]: Abstraction has 727 states and 910 transitions. [2019-09-09 14:54:06,949 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-09 14:54:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 910 transitions. [2019-09-09 14:54:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-09-09 14:54:06,953 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:54:06,953 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 14:54:06,953 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:54:06,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:54:06,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1142949717, now seen corresponding path program 1 times [2019-09-09 14:54:06,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:54:06,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:54:06,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:54:06,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:54:06,957 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:54:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:54:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 99 proven. 5 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-09 14:54:07,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 14:54:07,149 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 14:54:07,149 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2019-09-09 14:54:07,149 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [542], [792], [796], [805], [809], [811], [816], [817], [818], [820], [821] [2019-09-09 14:54:07,153 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 14:54:07,153 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 14:54:18,158 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 14:54:32,215 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 14:54:32,216 INFO L272 AbstractInterpreter]: Visited 89 different actions 171 times. Merged at 3 different actions 3 times. Never widened. Performed 305 root evaluator evaluations with a maximum evaluation depth of 16. Performed 305 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2019-09-09 14:54:32,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:54:32,216 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 14:54:53,235 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 73.46% of their original sizes. [2019-09-09 14:54:53,236 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 14:54:53,316 INFO L420 sIntCurrentIteration]: We unified 215 AI predicates to 215 [2019-09-09 14:54:53,316 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 14:54:53,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 14:54:53,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2019-09-09 14:54:53,317 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:54:53,317 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-09 14:54:53,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-09 14:54:53,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-09-09 14:54:53,318 INFO L87 Difference]: Start difference. First operand 727 states and 910 transitions. Second operand 11 states.