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_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 15:17:37,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 15:17:37,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 15:17:37,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 15:17:37,841 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 15:17:37,856 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 15:17:37,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 15:17:37,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 15:17:37,858 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 15:17:37,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 15:17:37,859 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 15:17:37,860 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 15:17:37,860 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 15:17:37,860 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 15:17:37,860 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 15:17:37,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 15:17:37,861 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 15:17:37,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 15:17:37,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 15:17:37,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 15:17:37,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 15:17:37,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 15:17:37,862 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 15:17:37,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 15:17:37,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 15:17:37,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 15:17:37,863 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 15:17:37,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 15:17:37,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 15:17:37,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 15:17:37,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 15:17:37,864 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 15:17:37,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 15:17:37,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 15:17:37,865 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 15:17:37,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 15:17:37,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 15:17:37,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 15:17:37,912 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 15:17:37,912 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 15:17:37,913 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label25.c [2019-09-09 15:17:37,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78503ee80/d0986fde18204fd0ba7cca41a865a5cf/FLAG824610f8f [2019-09-09 15:17:38,630 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 15:17:38,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label25.c [2019-09-09 15:17:38,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78503ee80/d0986fde18204fd0ba7cca41a865a5cf/FLAG824610f8f [2019-09-09 15:17:38,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78503ee80/d0986fde18204fd0ba7cca41a865a5cf [2019-09-09 15:17:38,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 15:17:38,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 15:17:38,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 15:17:38,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 15:17:38,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 15:17:38,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:17:38" (1/1) ... [2019-09-09 15:17:38,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac25b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:17:38, skipping insertion in model container [2019-09-09 15:17:38,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:17:38" (1/1) ... [2019-09-09 15:17:38,870 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 15:17:38,942 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 15:17:39,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:17:39,633 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 15:17:39,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:17:39,808 INFO L192 MainTranslator]: Completed translation [2019-09-09 15:17:39,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:17:39 WrapperNode [2019-09-09 15:17:39,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 15:17:39,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 15:17:39,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 15:17:39,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 15:17:39,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:17:39" (1/1) ... [2019-09-09 15:17:39,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:17:39" (1/1) ... [2019-09-09 15:17:39,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:17:39" (1/1) ... [2019-09-09 15:17:39,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:17:39" (1/1) ... [2019-09-09 15:17:39,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:17:39" (1/1) ... [2019-09-09 15:17:39,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:17:39" (1/1) ... [2019-09-09 15:17:39,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:17:39" (1/1) ... [2019-09-09 15:17:39,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 15:17:39,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 15:17:39,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 15:17:39,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 15:17:39,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:17:39" (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 15:17:40,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 15:17:40,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 15:17:40,028 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 15:17:40,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 15:17:40,029 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 15:17:40,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 15:17:40,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 15:17:40,029 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 15:17:40,029 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 15:17:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 15:17:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 15:17:41,934 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 15:17:41,938 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 15:17:41,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:17:41 BoogieIcfgContainer [2019-09-09 15:17:41,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 15:17:41,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 15:17:41,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 15:17:41,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 15:17:41,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 03:17:38" (1/3) ... [2019-09-09 15:17:41,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f8b592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:17:41, skipping insertion in model container [2019-09-09 15:17:41,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:17:39" (2/3) ... [2019-09-09 15:17:41,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f8b592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:17:41, skipping insertion in model container [2019-09-09 15:17:41,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:17:41" (3/3) ... [2019-09-09 15:17:41,957 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label25.c [2019-09-09 15:17:41,972 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 15:17:41,983 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 15:17:42,001 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 15:17:42,027 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 15:17:42,028 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 15:17:42,028 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 15:17:42,028 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 15:17:42,029 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 15:17:42,029 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 15:17:42,030 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 15:17:42,030 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 15:17:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-09-09 15:17:42,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-09 15:17:42,067 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:17:42,068 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] [2019-09-09 15:17:42,070 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:17:42,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:17:42,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1539824594, now seen corresponding path program 1 times [2019-09-09 15:17:42,077 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:17:42,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:17:42,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:17:42,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:17:42,119 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:17:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:17:42,415 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 15:17:42,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:17:42,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 15:17:42,422 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:17:42,428 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 15:17:42,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 15:17:42,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 15:17:42,447 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2019-09-09 15:17:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:17:44,601 INFO L93 Difference]: Finished difference Result 706 states and 965 transitions. [2019-09-09 15:17:44,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 15:17:44,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-09-09 15:17:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:17:44,628 INFO L225 Difference]: With dead ends: 706 [2019-09-09 15:17:44,629 INFO L226 Difference]: Without dead ends: 618 [2019-09-09 15:17:44,631 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 15:17:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2019-09-09 15:17:44,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 419. [2019-09-09 15:17:44,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-09-09 15:17:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 604 transitions. [2019-09-09 15:17:44,713 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 604 transitions. Word has length 37 [2019-09-09 15:17:44,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:17:44,713 INFO L475 AbstractCegarLoop]: Abstraction has 419 states and 604 transitions. [2019-09-09 15:17:44,714 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 15:17:44,714 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 604 transitions. [2019-09-09 15:17:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-09 15:17:44,719 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:17:44,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:44,720 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:17:44,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:17:44,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1804759410, now seen corresponding path program 1 times [2019-09-09 15:17:44,721 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:17:44,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:17:44,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:17:44,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:17:44,722 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:17:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:17:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:17:45,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:17:45,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 15:17:45,016 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:17:45,020 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 15:17:45,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 15:17:45,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 15:17:45,021 INFO L87 Difference]: Start difference. First operand 419 states and 604 transitions. Second operand 6 states. [2019-09-09 15:17:46,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:17:46,681 INFO L93 Difference]: Finished difference Result 823 states and 1189 transitions. [2019-09-09 15:17:46,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 15:17:46,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2019-09-09 15:17:46,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:17:46,693 INFO L225 Difference]: With dead ends: 823 [2019-09-09 15:17:46,693 INFO L226 Difference]: Without dead ends: 823 [2019-09-09 15:17:46,694 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 15:17:46,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2019-09-09 15:17:46,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 808. [2019-09-09 15:17:46,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 808 states. [2019-09-09 15:17:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1155 transitions. [2019-09-09 15:17:46,745 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1155 transitions. Word has length 109 [2019-09-09 15:17:46,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:17:46,746 INFO L475 AbstractCegarLoop]: Abstraction has 808 states and 1155 transitions. [2019-09-09 15:17:46,746 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 15:17:46,746 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1155 transitions. [2019-09-09 15:17:46,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-09-09 15:17:46,748 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:17:46,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:46,749 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:17:46,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:17:46,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1442270559, now seen corresponding path program 1 times [2019-09-09 15:17:46,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:17:46,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:17:46,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:17:46,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:17:46,752 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:17:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:17:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:17:46,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:17:46,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 15:17:46,854 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:17:46,857 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 15:17:46,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 15:17:46,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 15:17:46,858 INFO L87 Difference]: Start difference. First operand 808 states and 1155 transitions. Second operand 4 states. [2019-09-09 15:17:48,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:17:48,632 INFO L93 Difference]: Finished difference Result 1587 states and 2212 transitions. [2019-09-09 15:17:48,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 15:17:48,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2019-09-09 15:17:48,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:17:48,648 INFO L225 Difference]: With dead ends: 1587 [2019-09-09 15:17:48,648 INFO L226 Difference]: Without dead ends: 1587 [2019-09-09 15:17:48,649 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 15:17:48,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2019-09-09 15:17:48,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1382. [2019-09-09 15:17:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2019-09-09 15:17:48,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1936 transitions. [2019-09-09 15:17:48,722 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1936 transitions. Word has length 110 [2019-09-09 15:17:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:17:48,733 INFO L475 AbstractCegarLoop]: Abstraction has 1382 states and 1936 transitions. [2019-09-09 15:17:48,733 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 15:17:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1936 transitions. [2019-09-09 15:17:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-09-09 15:17:48,748 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:17:48,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:17:48,749 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:17:48,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:17:48,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1880973050, now seen corresponding path program 1 times [2019-09-09 15:17:48,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:17:48,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:17:48,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:17:48,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:17:48,752 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:17:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:17:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:17:48,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:17:48,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 15:17:48,961 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:17:48,961 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 15:17:48,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 15:17:48,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 15:17:48,962 INFO L87 Difference]: Start difference. First operand 1382 states and 1936 transitions. Second operand 6 states. [2019-09-09 15:17:51,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:17:51,755 INFO L93 Difference]: Finished difference Result 3867 states and 5988 transitions. [2019-09-09 15:17:51,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-09 15:17:51,756 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2019-09-09 15:17:51,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:17:51,793 INFO L225 Difference]: With dead ends: 3867 [2019-09-09 15:17:51,794 INFO L226 Difference]: Without dead ends: 3867 [2019-09-09 15:17:51,795 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 15:17:51,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2019-09-09 15:17:51,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 3573. [2019-09-09 15:17:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3573 states. [2019-09-09 15:17:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 4989 transitions. [2019-09-09 15:17:51,956 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 4989 transitions. Word has length 135 [2019-09-09 15:17:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:17:51,957 INFO L475 AbstractCegarLoop]: Abstraction has 3573 states and 4989 transitions. [2019-09-09 15:17:51,957 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 15:17:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 4989 transitions. [2019-09-09 15:17:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-09-09 15:17:51,961 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:17:51,962 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, 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 15:17:51,962 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:17:51,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:17:51,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1909035527, now seen corresponding path program 1 times [2019-09-09 15:17:51,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:17:51,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:17:51,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:17:51,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:17:51,964 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:17:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:17:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:17:52,131 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 15:17:52,131 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 15:17:52,132 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 183 with the following transitions: [2019-09-09 15:17:52,135 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], [205], [207], [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 15:17:52,193 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 15:17:52,194 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 15:18:20,076 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 15:18:20,078 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 15:18:20,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:18:20,083 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 15:19:04,312 INFO L227 lantSequenceWeakener]: Weakened 163 states. On average, predicates are now at 73.67% of their original sizes. [2019-09-09 15:19:04,312 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 15:19:04,401 INFO L420 sIntCurrentIteration]: We unified 181 AI predicates to 181 [2019-09-09 15:19:04,402 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 15:19:04,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 15:19:04,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-09-09 15:19:04,404 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:19:04,405 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 15:19:04,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 15:19:04,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-09-09 15:19:04,405 INFO L87 Difference]: Start difference. First operand 3573 states and 4989 transitions. Second operand 10 states. [2019-09-09 15:32:08,835 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.