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/Problem19_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 23:38:07,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 23:38:07,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 23:38:07,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 23:38:07,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 23:38:07,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 23:38:07,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 23:38:07,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 23:38:07,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 23:38:07,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 23:38:07,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 23:38:07,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 23:38:07,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 23:38:07,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 23:38:07,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 23:38:07,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 23:38:07,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 23:38:07,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 23:38:07,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 23:38:07,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 23:38:07,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 23:38:07,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 23:38:07,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 23:38:07,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 23:38:07,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 23:38:07,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 23:38:07,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 23:38:07,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 23:38:07,996 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 23:38:08,025 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 23:38:08,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 23:38:08,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 23:38:08,026 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 23:38:08,027 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 23:38:08,027 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 23:38:08,027 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 23:38:08,028 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 23:38:08,028 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 23:38:08,028 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 23:38:08,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 23:38:08,029 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 23:38:08,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 23:38:08,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 23:38:08,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 23:38:08,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 23:38:08,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 23:38:08,030 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 23:38:08,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 23:38:08,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 23:38:08,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 23:38:08,031 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 23:38:08,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 23:38:08,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 23:38:08,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 23:38:08,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 23:38:08,032 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 23:38:08,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 23:38:08,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 23:38:08,033 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 23:38:08,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 23:38:08,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 23:38:08,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 23:38:08,079 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 23:38:08,082 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 23:38:08,083 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label47.c [2019-09-09 23:38:08,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cb48bd3e/df6785bad6f747589d4d73c2f2f79146/FLAG124889531 [2019-09-09 23:38:09,090 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 23:38:09,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label47.c [2019-09-09 23:38:09,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cb48bd3e/df6785bad6f747589d4d73c2f2f79146/FLAG124889531 [2019-09-09 23:38:09,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cb48bd3e/df6785bad6f747589d4d73c2f2f79146 [2019-09-09 23:38:09,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 23:38:09,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 23:38:09,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 23:38:09,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 23:38:09,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 23:38:09,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:38:09" (1/1) ... [2019-09-09 23:38:09,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aaddbe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:38:09, skipping insertion in model container [2019-09-09 23:38:09,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:38:09" (1/1) ... [2019-09-09 23:38:09,492 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 23:38:09,735 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 23:38:11,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:38:11,967 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 23:38:13,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:38:13,188 INFO L192 MainTranslator]: Completed translation [2019-09-09 23:38:13,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:38:13 WrapperNode [2019-09-09 23:38:13,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 23:38:13,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 23:38:13,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 23:38:13,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 23:38:13,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:38:13" (1/1) ... [2019-09-09 23:38:13,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:38:13" (1/1) ... [2019-09-09 23:38:13,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:38:13" (1/1) ... [2019-09-09 23:38:13,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:38:13" (1/1) ... [2019-09-09 23:38:13,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:38:13" (1/1) ... [2019-09-09 23:38:13,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:38:13" (1/1) ... [2019-09-09 23:38:13,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:38:13" (1/1) ... [2019-09-09 23:38:13,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 23:38:13,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 23:38:13,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 23:38:13,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 23:38:13,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:38:13" (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 23:38:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 23:38:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 23:38:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 23:38:13,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 23:38:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 23:38:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 23:38:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-09 23:38:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-09 23:38:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 23:38:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 23:38:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 23:38:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 23:38:13,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 23:38:13,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-09 23:38:13,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-09 23:38:13,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 23:38:13,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 23:38:13,727 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 23:38:13,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 23:38:13,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 23:38:13,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 23:38:24,350 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 23:38:24,351 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 23:38:24,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:38:24 BoogieIcfgContainer [2019-09-09 23:38:24,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 23:38:24,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 23:38:24,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 23:38:24,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 23:38:24,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 11:38:09" (1/3) ... [2019-09-09 23:38:24,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5b16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:38:24, skipping insertion in model container [2019-09-09 23:38:24,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:38:13" (2/3) ... [2019-09-09 23:38:24,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5b16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:38:24, skipping insertion in model container [2019-09-09 23:38:24,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:38:24" (3/3) ... [2019-09-09 23:38:24,377 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label47.c [2019-09-09 23:38:24,388 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 23:38:24,399 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 23:38:24,419 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 23:38:24,449 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 23:38:24,450 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 23:38:24,450 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 23:38:24,450 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 23:38:24,450 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 23:38:24,450 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 23:38:24,450 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 23:38:24,451 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 23:38:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-09 23:38:24,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-09 23:38:24,519 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:38:24,519 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:38:24,521 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:38:24,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:38:24,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1648095394, now seen corresponding path program 1 times [2019-09-09 23:38:24,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:38:24,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:38:24,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:38:24,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:38:24,567 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:38:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:38:24,830 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 23:38:24,836 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:38:24,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 23:38:24,836 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:38:24,842 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 23:38:24,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 23:38:24,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 23:38:24,860 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-09 23:38:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:38:36,694 INFO L93 Difference]: Finished difference Result 3260 states and 6034 transitions. [2019-09-09 23:38:36,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 23:38:36,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-09 23:38:36,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:38:36,743 INFO L225 Difference]: With dead ends: 3260 [2019-09-09 23:38:36,744 INFO L226 Difference]: Without dead ends: 3192 [2019-09-09 23:38:36,745 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 23:38:36,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2019-09-09 23:38:36,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 3145. [2019-09-09 23:38:36,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3145 states. [2019-09-09 23:38:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 5823 transitions. [2019-09-09 23:38:36,917 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 5823 transitions. Word has length 14 [2019-09-09 23:38:36,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:38:36,918 INFO L475 AbstractCegarLoop]: Abstraction has 3145 states and 5823 transitions. [2019-09-09 23:38:36,918 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 23:38:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 5823 transitions. [2019-09-09 23:38:36,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-09 23:38:36,922 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:38:36,923 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 23:38:36,923 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:38:36,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:38:36,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1316168237, now seen corresponding path program 1 times [2019-09-09 23:38:36,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:38:36,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:38:36,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:38:36,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:38:36,925 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:38:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:38:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:38:37,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:38:37,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:38:37,205 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:38:37,207 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:38:37,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:38:37,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:38:37,208 INFO L87 Difference]: Start difference. First operand 3145 states and 5823 transitions. Second operand 6 states. [2019-09-09 23:38:53,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:38:53,899 INFO L93 Difference]: Finished difference Result 6263 states and 11110 transitions. [2019-09-09 23:38:53,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 23:38:53,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2019-09-09 23:38:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:38:53,937 INFO L225 Difference]: With dead ends: 6263 [2019-09-09 23:38:53,938 INFO L226 Difference]: Without dead ends: 6263 [2019-09-09 23:38:53,938 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-09 23:38:53,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2019-09-09 23:38:54,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 6157. [2019-09-09 23:38:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6157 states. [2019-09-09 23:38:54,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6157 states to 6157 states and 10968 transitions. [2019-09-09 23:38:54,131 INFO L78 Accepts]: Start accepts. Automaton has 6157 states and 10968 transitions. Word has length 86 [2019-09-09 23:38:54,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:38:54,134 INFO L475 AbstractCegarLoop]: Abstraction has 6157 states and 10968 transitions. [2019-09-09 23:38:54,134 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:38:54,134 INFO L276 IsEmpty]: Start isEmpty. Operand 6157 states and 10968 transitions. [2019-09-09 23:38:54,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-09 23:38:54,140 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:38:54,141 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 23:38:54,142 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:38:54,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:38:54,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1453237866, now seen corresponding path program 1 times [2019-09-09 23:38:54,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:38:54,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:38:54,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:38:54,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:38:54,146 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:38:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:38:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:38:54,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:38:54,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 23:38:54,379 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:38:54,380 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 23:38:54,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 23:38:54,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 23:38:54,384 INFO L87 Difference]: Start difference. First operand 6157 states and 10968 transitions. Second operand 5 states. [2019-09-09 23:39:11,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:39:11,891 INFO L93 Difference]: Finished difference Result 12438 states and 18625 transitions. [2019-09-09 23:39:11,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 23:39:11,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2019-09-09 23:39:11,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:39:11,950 INFO L225 Difference]: With dead ends: 12438 [2019-09-09 23:39:11,951 INFO L226 Difference]: Without dead ends: 12438 [2019-09-09 23:39:11,951 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 23:39:11,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12438 states. [2019-09-09 23:39:12,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12438 to 12168. [2019-09-09 23:39:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12168 states. [2019-09-09 23:39:12,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12168 states to 12168 states and 18247 transitions. [2019-09-09 23:39:12,226 INFO L78 Accepts]: Start accepts. Automaton has 12168 states and 18247 transitions. Word has length 100 [2019-09-09 23:39:12,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:39:12,226 INFO L475 AbstractCegarLoop]: Abstraction has 12168 states and 18247 transitions. [2019-09-09 23:39:12,227 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 23:39:12,227 INFO L276 IsEmpty]: Start isEmpty. Operand 12168 states and 18247 transitions. [2019-09-09 23:39:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-09-09 23:39:12,240 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:39:12,241 INFO L399 BasicCegarLoop]: trace histogram [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, 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] [2019-09-09 23:39:12,242 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:39:12,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:39:12,242 INFO L82 PathProgramCache]: Analyzing trace with hash -82491145, now seen corresponding path program 1 times [2019-09-09 23:39:12,242 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:39:12,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:39:12,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:39:12,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:39:12,244 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:39:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:39:12,436 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 82 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 23:39:12,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 23:39:12,437 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 23:39:12,438 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 190 with the following transitions: [2019-09-09 23:39:12,440 INFO L207 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5246], [5248], [5251], [5259], [5267], [5275], [5283], [5291], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5822], [5823], [5827], [5838], [5841], [6802], [6806], [6815], [6819], [6821], [6836], [6837], [6838], [6840], [6841] [2019-09-09 23:39:12,485 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 23:39:12,485 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 23:39:18,777 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 23:39:18,779 INFO L272 AbstractInterpreter]: Visited 94 different actions 94 times. Never merged. Never widened. Performed 232 root evaluator evaluations with a maximum evaluation depth of 14. Performed 232 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 23:39:18,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:39:18,784 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 23:39:26,130 INFO L227 lantSequenceWeakener]: Weakened 170 states. On average, predicates are now at 75.05% of their original sizes. [2019-09-09 23:39:26,131 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 23:39:26,220 INFO L420 sIntCurrentIteration]: We unified 188 AI predicates to 188 [2019-09-09 23:39:26,220 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 23:39:26,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 23:39:26,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-09-09 23:39:26,221 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:39:26,222 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 23:39:26,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 23:39:26,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-09 23:39:26,223 INFO L87 Difference]: Start difference. First operand 12168 states and 18247 transitions. Second operand 10 states. [2019-09-09 23:42:33,760 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.