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/Problem11_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 15:03:00,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 15:03:00,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 15:03:00,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 15:03:00,385 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 15:03:00,410 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 15:03:00,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 15:03:00,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 15:03:00,411 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 15:03:00,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 15:03:00,412 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 15:03:00,412 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 15:03:00,412 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 15:03:00,412 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 15:03:00,413 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 15:03:00,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 15:03:00,413 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 15:03:00,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 15:03:00,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 15:03:00,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 15:03:00,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 15:03:00,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 15:03:00,415 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 15:03:00,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 15:03:00,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 15:03:00,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 15:03:00,416 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 15:03:00,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 15:03:00,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 15:03:00,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 15:03:00,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 15:03:00,418 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 15:03:00,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 15:03:00,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 15:03:00,419 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 15:03:00,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 15:03:00,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 15:03:00,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 15:03:00,499 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 15:03:00,499 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 15:03:00,500 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label10.c [2019-09-09 15:03:00,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177ffd5f0/35434a8f7e87473b816629bee2513d4e/FLAGd2315c600 [2019-09-09 15:03:01,232 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 15:03:01,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label10.c [2019-09-09 15:03:01,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177ffd5f0/35434a8f7e87473b816629bee2513d4e/FLAGd2315c600 [2019-09-09 15:03:01,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177ffd5f0/35434a8f7e87473b816629bee2513d4e [2019-09-09 15:03:01,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 15:03:01,437 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 15:03:01,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 15:03:01,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 15:03:01,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 15:03:01,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:03:01" (1/1) ... [2019-09-09 15:03:01,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d915ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:03:01, skipping insertion in model container [2019-09-09 15:03:01,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:03:01" (1/1) ... [2019-09-09 15:03:01,455 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 15:03:01,516 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 15:03:02,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:03:02,247 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 15:03:02,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:03:02,565 INFO L192 MainTranslator]: Completed translation [2019-09-09 15:03:02,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:03:02 WrapperNode [2019-09-09 15:03:02,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 15:03:02,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 15:03:02,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 15:03:02,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 15:03:02,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:03:02" (1/1) ... [2019-09-09 15:03:02,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:03:02" (1/1) ... [2019-09-09 15:03:02,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:03:02" (1/1) ... [2019-09-09 15:03:02,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:03:02" (1/1) ... [2019-09-09 15:03:02,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:03:02" (1/1) ... [2019-09-09 15:03:02,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:03:02" (1/1) ... [2019-09-09 15:03:02,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:03:02" (1/1) ... [2019-09-09 15:03:02,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 15:03:02,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 15:03:02,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 15:03:02,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 15:03:02,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:03:02" (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 15:03:02,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 15:03:02,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 15:03:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 15:03:02,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 15:03:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 15:03:02,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 15:03:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 15:03:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 15:03:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 15:03:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 15:03:02,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 15:03:04,641 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 15:03:04,641 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 15:03:04,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:03:04 BoogieIcfgContainer [2019-09-09 15:03:04,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 15:03:04,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 15:03:04,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 15:03:04,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 15:03:04,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 03:03:01" (1/3) ... [2019-09-09 15:03:04,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193e4244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:03:04, skipping insertion in model container [2019-09-09 15:03:04,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:03:02" (2/3) ... [2019-09-09 15:03:04,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193e4244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:03:04, skipping insertion in model container [2019-09-09 15:03:04,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:03:04" (3/3) ... [2019-09-09 15:03:04,654 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label10.c [2019-09-09 15:03:04,665 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 15:03:04,676 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 15:03:04,698 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 15:03:04,733 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 15:03:04,734 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 15:03:04,734 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 15:03:04,734 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 15:03:04,735 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 15:03:04,735 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 15:03:04,735 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 15:03:04,735 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 15:03:04,782 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-09-09 15:03:04,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-09 15:03:04,797 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:03:04,799 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] [2019-09-09 15:03:04,801 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:03:04,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:03:04,809 INFO L82 PathProgramCache]: Analyzing trace with hash 734030971, now seen corresponding path program 1 times [2019-09-09 15:03:04,812 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:03:04,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:03:04,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:03:04,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:03:04,922 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:03:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:03:05,182 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 15:03:05,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:03:05,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 15:03:05,185 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:03:05,194 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 15:03:05,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 15:03:05,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 15:03:05,212 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2019-09-09 15:03:07,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:03:07,831 INFO L93 Difference]: Finished difference Result 711 states and 1021 transitions. [2019-09-09 15:03:07,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 15:03:07,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-09-09 15:03:07,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:03:07,856 INFO L225 Difference]: With dead ends: 711 [2019-09-09 15:03:07,857 INFO L226 Difference]: Without dead ends: 623 [2019-09-09 15:03:07,858 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 15:03:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-09-09 15:03:07,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 620. [2019-09-09 15:03:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-09-09 15:03:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 896 transitions. [2019-09-09 15:03:07,957 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 896 transitions. Word has length 28 [2019-09-09 15:03:07,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:03:07,958 INFO L475 AbstractCegarLoop]: Abstraction has 620 states and 896 transitions. [2019-09-09 15:03:07,958 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 15:03:07,958 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 896 transitions. [2019-09-09 15:03:07,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-09-09 15:03:07,986 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:03:07,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:07,987 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:03:07,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:03:07,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1011694458, now seen corresponding path program 1 times [2019-09-09 15:03:07,988 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:03:07,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:03:07,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:03:07,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:03:07,990 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:03:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:03:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:03:08,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:03:08,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 15:03:08,276 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:03:08,278 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 15:03:08,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 15:03:08,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 15:03:08,279 INFO L87 Difference]: Start difference. First operand 620 states and 896 transitions. Second operand 6 states. [2019-09-09 15:03:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:03:09,995 INFO L93 Difference]: Finished difference Result 1219 states and 1787 transitions. [2019-09-09 15:03:09,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 15:03:09,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2019-09-09 15:03:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:03:10,007 INFO L225 Difference]: With dead ends: 1219 [2019-09-09 15:03:10,008 INFO L226 Difference]: Without dead ends: 1219 [2019-09-09 15:03:10,009 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 15:03:10,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2019-09-09 15:03:10,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1200. [2019-09-09 15:03:10,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2019-09-09 15:03:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1735 transitions. [2019-09-09 15:03:10,089 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1735 transitions. Word has length 100 [2019-09-09 15:03:10,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:03:10,090 INFO L475 AbstractCegarLoop]: Abstraction has 1200 states and 1735 transitions. [2019-09-09 15:03:10,090 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 15:03:10,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1735 transitions. [2019-09-09 15:03:10,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-09-09 15:03:10,097 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:03:10,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:10,098 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:03:10,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:03:10,098 INFO L82 PathProgramCache]: Analyzing trace with hash -356402163, now seen corresponding path program 1 times [2019-09-09 15:03:10,098 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:03:10,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:03:10,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:03:10,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:03:10,100 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:03:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:03:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:03:10,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:03:10,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 15:03:10,225 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:03:10,226 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 15:03:10,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 15:03:10,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 15:03:10,227 INFO L87 Difference]: Start difference. First operand 1200 states and 1735 transitions. Second operand 4 states. [2019-09-09 15:03:11,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:03:11,987 INFO L93 Difference]: Finished difference Result 2358 states and 3344 transitions. [2019-09-09 15:03:11,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 15:03:11,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2019-09-09 15:03:11,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:03:12,009 INFO L225 Difference]: With dead ends: 2358 [2019-09-09 15:03:12,010 INFO L226 Difference]: Without dead ends: 2358 [2019-09-09 15:03:12,010 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 15:03:12,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2019-09-09 15:03:12,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2153. [2019-09-09 15:03:12,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2019-09-09 15:03:12,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3070 transitions. [2019-09-09 15:03:12,107 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3070 transitions. Word has length 101 [2019-09-09 15:03:12,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:03:12,116 INFO L475 AbstractCegarLoop]: Abstraction has 2153 states and 3070 transitions. [2019-09-09 15:03:12,116 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 15:03:12,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3070 transitions. [2019-09-09 15:03:12,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-09 15:03:12,121 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:03:12,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:12,122 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:03:12,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:03:12,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1268458330, now seen corresponding path program 1 times [2019-09-09 15:03:12,123 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:03:12,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:03:12,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:03:12,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:03:12,124 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:03:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:03:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:03:12,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:03:12,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 15:03:12,305 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:03:12,306 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 15:03:12,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 15:03:12,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 15:03:12,307 INFO L87 Difference]: Start difference. First operand 2153 states and 3070 transitions. Second operand 6 states. [2019-09-09 15:03:15,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:03:15,051 INFO L93 Difference]: Finished difference Result 5880 states and 9697 transitions. [2019-09-09 15:03:15,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-09 15:03:15,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2019-09-09 15:03:15,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:03:15,119 INFO L225 Difference]: With dead ends: 5880 [2019-09-09 15:03:15,120 INFO L226 Difference]: Without dead ends: 5880 [2019-09-09 15:03:15,121 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-09 15:03:15,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2019-09-09 15:03:15,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5142. [2019-09-09 15:03:15,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5142 states. [2019-09-09 15:03:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 7404 transitions. [2019-09-09 15:03:15,446 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 7404 transitions. Word has length 126 [2019-09-09 15:03:15,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:03:15,448 INFO L475 AbstractCegarLoop]: Abstraction has 5142 states and 7404 transitions. [2019-09-09 15:03:15,448 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 15:03:15,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 7404 transitions. [2019-09-09 15:03:15,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-09-09 15:03:15,453 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:03:15,454 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, 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 15:03:15,455 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:03:15,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:03:15,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1769948106, now seen corresponding path program 1 times [2019-09-09 15:03:15,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:03:15,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:03:15,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:03:15,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:03:15,457 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:03:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:03:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:03:15,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 15:03:15,613 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 15:03:15,614 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 174 with the following transitions: [2019-09-09 15:03:15,616 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [514], [1084], [1088], [1097], [1101], [1103], [1108], [1109], [1110], [1112], [1113] [2019-09-09 15:03:15,678 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 15:03:15,678 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 15:03:44,794 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 15:03:44,797 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Performed 207 root evaluator evaluations with a maximum evaluation depth of 16. Performed 207 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Never found a fixpoint. Largest state had 28 variables. [2019-09-09 15:03:44,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:03:44,801 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 15:04:26,882 INFO L227 lantSequenceWeakener]: Weakened 154 states. On average, predicates are now at 73.48% of their original sizes. [2019-09-09 15:04:26,882 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 15:04:26,973 INFO L420 sIntCurrentIteration]: We unified 172 AI predicates to 172 [2019-09-09 15:04:26,973 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 15:04:26,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 15:04:26,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-09-09 15:04:26,975 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:04:26,976 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 15:04:26,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 15:04:26,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-09 15:04:26,977 INFO L87 Difference]: Start difference. First operand 5142 states and 7404 transitions. Second operand 10 states. [2019-09-09 15:17:30,386 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.