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/Problem02_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 06:52:19,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 06:52:19,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 06:52:19,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 06:52:19,636 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 06:52:19,651 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 06:52:19,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 06:52:19,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 06:52:19,653 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 06:52:19,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 06:52:19,653 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 06:52:19,653 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 06:52:19,654 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 06:52:19,654 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 06:52:19,654 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 06:52:19,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 06:52:19,655 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 06:52:19,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 06:52:19,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 06:52:19,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 06:52:19,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 06:52:19,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 06:52:19,656 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 06:52:19,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 06:52:19,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 06:52:19,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 06:52:19,657 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 06:52:19,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 06:52:19,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 06:52:19,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 06:52:19,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 06:52:19,658 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 06:52:19,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 06:52:19,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 06:52:19,658 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 06:52:19,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 06:52:19,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 06:52:19,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 06:52:19,704 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 06:52:19,705 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 06:52:19,705 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2019-09-09 06:52:19,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97546fb19/4dc2ca1d04784341ad25aa2051e7262b/FLAG98d60f19a [2019-09-09 06:52:20,303 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 06:52:20,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2019-09-09 06:52:20,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97546fb19/4dc2ca1d04784341ad25aa2051e7262b/FLAG98d60f19a [2019-09-09 06:52:20,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97546fb19/4dc2ca1d04784341ad25aa2051e7262b [2019-09-09 06:52:20,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 06:52:20,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 06:52:20,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 06:52:20,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 06:52:20,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 06:52:20,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:52:20" (1/1) ... [2019-09-09 06:52:20,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6b4f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:52:20, skipping insertion in model container [2019-09-09 06:52:20,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:52:20" (1/1) ... [2019-09-09 06:52:20,665 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 06:52:20,724 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 06:52:21,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:52:21,234 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 06:52:21,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:52:21,394 INFO L192 MainTranslator]: Completed translation [2019-09-09 06:52:21,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:52:21 WrapperNode [2019-09-09 06:52:21,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 06:52:21,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 06:52:21,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 06:52:21,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 06:52:21,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:52:21" (1/1) ... [2019-09-09 06:52:21,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:52:21" (1/1) ... [2019-09-09 06:52:21,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:52:21" (1/1) ... [2019-09-09 06:52:21,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:52:21" (1/1) ... [2019-09-09 06:52:21,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:52:21" (1/1) ... [2019-09-09 06:52:21,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:52:21" (1/1) ... [2019-09-09 06:52:21,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:52:21" (1/1) ... [2019-09-09 06:52:21,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 06:52:21,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 06:52:21,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 06:52:21,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 06:52:21,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:52:21" (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 06:52:21,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 06:52:21,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 06:52:21,652 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 06:52:21,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 06:52:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 06:52:21,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 06:52:21,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 06:52:21,654 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 06:52:21,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 06:52:21,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 06:52:21,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 06:52:22,830 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 06:52:22,831 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 06:52:22,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:52:22 BoogieIcfgContainer [2019-09-09 06:52:22,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 06:52:22,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 06:52:22,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 06:52:22,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 06:52:22,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 06:52:20" (1/3) ... [2019-09-09 06:52:22,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c106bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:52:22, skipping insertion in model container [2019-09-09 06:52:22,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:52:21" (2/3) ... [2019-09-09 06:52:22,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c106bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:52:22, skipping insertion in model container [2019-09-09 06:52:22,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:52:22" (3/3) ... [2019-09-09 06:52:22,841 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label21.c [2019-09-09 06:52:22,850 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 06:52:22,859 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 06:52:22,876 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 06:52:22,908 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 06:52:22,909 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 06:52:22,909 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 06:52:22,909 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 06:52:22,910 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 06:52:22,910 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 06:52:22,910 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 06:52:22,910 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 06:52:22,934 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-09-09 06:52:22,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-09 06:52:22,951 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:52:22,953 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 06:52:22,955 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:52:22,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:52:22,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1487720814, now seen corresponding path program 1 times [2019-09-09 06:52:22,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:52:23,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:52:23,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:52:23,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:52:23,017 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:52:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:52:23,423 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 06:52:23,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:52:23,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 06:52:23,426 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:52:23,435 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 06:52:23,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 06:52:23,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:52:23,459 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2019-09-09 06:52:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:52:24,451 INFO L93 Difference]: Finished difference Result 385 states and 567 transitions. [2019-09-09 06:52:24,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 06:52:24,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2019-09-09 06:52:24,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:52:24,484 INFO L225 Difference]: With dead ends: 385 [2019-09-09 06:52:24,484 INFO L226 Difference]: Without dead ends: 317 [2019-09-09 06:52:24,487 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:52:24,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2019-09-09 06:52:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2019-09-09 06:52:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2019-09-09 06:52:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 478 transitions. [2019-09-09 06:52:24,603 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 478 transitions. Word has length 102 [2019-09-09 06:52:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:52:24,604 INFO L475 AbstractCegarLoop]: Abstraction has 317 states and 478 transitions. [2019-09-09 06:52:24,605 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 06:52:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 478 transitions. [2019-09-09 06:52:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-09 06:52:24,610 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:52:24,610 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 06:52:24,611 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:52:24,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:52:24,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1854436435, now seen corresponding path program 1 times [2019-09-09 06:52:24,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:52:24,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:52:24,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:52:24,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:52:24,613 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:52:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:52:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:52:24,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:52:24,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 06:52:24,709 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:52:24,710 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 06:52:24,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 06:52:24,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 06:52:24,711 INFO L87 Difference]: Start difference. First operand 317 states and 478 transitions. Second operand 6 states. [2019-09-09 06:52:25,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:52:25,180 INFO L93 Difference]: Finished difference Result 314 states and 443 transitions. [2019-09-09 06:52:25,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-09 06:52:25,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2019-09-09 06:52:25,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:52:25,183 INFO L225 Difference]: With dead ends: 314 [2019-09-09 06:52:25,184 INFO L226 Difference]: Without dead ends: 314 [2019-09-09 06:52:25,185 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-09 06:52:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2019-09-09 06:52:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 310. [2019-09-09 06:52:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2019-09-09 06:52:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 437 transitions. [2019-09-09 06:52:25,224 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 437 transitions. Word has length 117 [2019-09-09 06:52:25,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:52:25,225 INFO L475 AbstractCegarLoop]: Abstraction has 310 states and 437 transitions. [2019-09-09 06:52:25,225 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 06:52:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 437 transitions. [2019-09-09 06:52:25,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-09-09 06:52:25,230 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:52:25,231 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1] [2019-09-09 06:52:25,231 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:52:25,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:52:25,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1506178426, now seen corresponding path program 1 times [2019-09-09 06:52:25,232 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:52:25,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:52:25,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:52:25,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:52:25,238 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:52:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:52:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:52:25,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:52:25,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 06:52:25,350 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:52:25,351 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 06:52:25,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 06:52:25,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 06:52:25,352 INFO L87 Difference]: Start difference. First operand 310 states and 437 transitions. Second operand 6 states. [2019-09-09 06:52:26,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:52:26,120 INFO L93 Difference]: Finished difference Result 478 states and 665 transitions. [2019-09-09 06:52:26,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 06:52:26,120 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2019-09-09 06:52:26,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:52:26,124 INFO L225 Difference]: With dead ends: 478 [2019-09-09 06:52:26,124 INFO L226 Difference]: Without dead ends: 478 [2019-09-09 06:52:26,125 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 06:52:26,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2019-09-09 06:52:26,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 461. [2019-09-09 06:52:26,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2019-09-09 06:52:26,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 632 transitions. [2019-09-09 06:52:26,147 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 632 transitions. Word has length 124 [2019-09-09 06:52:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:52:26,147 INFO L475 AbstractCegarLoop]: Abstraction has 461 states and 632 transitions. [2019-09-09 06:52:26,147 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 06:52:26,147 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 632 transitions. [2019-09-09 06:52:26,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-09-09 06:52:26,150 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:52:26,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:26,151 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:52:26,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:52:26,151 INFO L82 PathProgramCache]: Analyzing trace with hash -683087106, now seen corresponding path program 1 times [2019-09-09 06:52:26,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:52:26,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:52:26,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:52:26,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:52:26,153 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:52:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:52:26,469 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:52:26,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:52:26,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 06:52:26,470 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:52:26,470 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 06:52:26,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 06:52:26,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 06:52:26,471 INFO L87 Difference]: Start difference. First operand 461 states and 632 transitions. Second operand 5 states. [2019-09-09 06:52:27,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:52:27,051 INFO L93 Difference]: Finished difference Result 549 states and 721 transitions. [2019-09-09 06:52:27,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 06:52:27,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2019-09-09 06:52:27,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:52:27,055 INFO L225 Difference]: With dead ends: 549 [2019-09-09 06:52:27,055 INFO L226 Difference]: Without dead ends: 461 [2019-09-09 06:52:27,056 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-09 06:52:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2019-09-09 06:52:27,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2019-09-09 06:52:27,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2019-09-09 06:52:27,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 622 transitions. [2019-09-09 06:52:27,069 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 622 transitions. Word has length 128 [2019-09-09 06:52:27,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:52:27,070 INFO L475 AbstractCegarLoop]: Abstraction has 461 states and 622 transitions. [2019-09-09 06:52:27,070 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 06:52:27,070 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 622 transitions. [2019-09-09 06:52:27,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-09-09 06:52:27,072 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:52:27,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:27,073 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:52:27,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:52:27,073 INFO L82 PathProgramCache]: Analyzing trace with hash 235752310, now seen corresponding path program 1 times [2019-09-09 06:52:27,074 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:52:27,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:52:27,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:52:27,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:52:27,075 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:52:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:52:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:52:27,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:52:27,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 06:52:27,181 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:52:27,182 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 06:52:27,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 06:52:27,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 06:52:27,183 INFO L87 Difference]: Start difference. First operand 461 states and 622 transitions. Second operand 6 states. [2019-09-09 06:52:27,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:52:27,956 INFO L93 Difference]: Finished difference Result 769 states and 1023 transitions. [2019-09-09 06:52:27,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 06:52:27,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2019-09-09 06:52:27,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:52:27,961 INFO L225 Difference]: With dead ends: 769 [2019-09-09 06:52:27,961 INFO L226 Difference]: Without dead ends: 769 [2019-09-09 06:52:27,962 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 06:52:27,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2019-09-09 06:52:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 761. [2019-09-09 06:52:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2019-09-09 06:52:27,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1004 transitions. [2019-09-09 06:52:27,988 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1004 transitions. Word has length 132 [2019-09-09 06:52:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:52:27,989 INFO L475 AbstractCegarLoop]: Abstraction has 761 states and 1004 transitions. [2019-09-09 06:52:27,989 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 06:52:27,989 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1004 transitions. [2019-09-09 06:52:27,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-09-09 06:52:27,992 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:52:27,992 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:52:27,992 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:52:27,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:52:27,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1280951697, now seen corresponding path program 1 times [2019-09-09 06:52:27,993 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:52:27,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:52:27,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:52:27,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:52:27,994 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:52:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:52:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:52:28,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 06:52:28,135 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 06:52:28,136 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 138 with the following transitions: [2019-09-09 06:52:28,139 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [495], [497], [863], [867], [876], [880], [882], [887], [888], [889], [891], [892] [2019-09-09 06:52:28,208 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 06:52:28,209 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 07:03:46,793 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 07:03:46,795 INFO L272 AbstractInterpreter]: Visited 106 different actions 310 times. Merged at 6 different actions 12 times. Never widened. Performed 774 root evaluator evaluations with a maximum evaluation depth of 18. Performed 774 inverse root evaluator evaluations with a maximum inverse evaluation depth of 18. Found 3 fixpoints after 2 different actions. Largest state had 38 variables. [2019-09-09 07:03:46,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:03:46,799 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates