java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label34_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:53:13,526 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:53:13,529 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:53:13,546 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:53:13,546 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:53:13,548 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:53:13,550 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:53:13,553 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:53:13,554 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:53:13,555 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:53:13,556 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:53:13,557 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:53:13,557 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:53:13,558 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:53:13,560 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:53:13,560 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:53:13,561 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:53:13,563 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:53:13,566 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:53:13,567 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:53:13,568 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:53:13,572 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:53:13,574 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:53:13,575 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:53:13,575 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:53:13,576 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:53:13,577 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:53:13,578 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:53:13,578 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:53:13,579 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:53:13,580 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:53:13,580 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:53:13,581 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:53:13,581 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:53:13,582 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:53:13,583 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:53:13,583 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:53:13,602 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:53:13,602 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:53:13,603 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:53:13,603 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:53:13,603 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:53:13,603 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:53:13,604 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:53:13,604 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:53:13,604 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:53:13,604 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:53:13,605 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:53:13,605 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:53:13,606 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:53:13,606 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:53:13,606 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:53:13,606 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:53:13,606 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:53:13,607 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:53:13,607 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:53:13,607 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:53:13,607 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:53:13,607 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:53:13,608 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:53:13,608 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:53:13,608 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:53:13,608 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:53:13,608 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:53:13,609 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:53:13,609 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:53:13,609 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:53:13,609 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:53:13,610 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:53:13,610 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:53:13,610 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:53:13,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:53:13,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:53:13,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:53:13,686 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:53:13,687 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:53:13,688 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label34_true-unreach-call.c [2018-11-07 14:53:13,748 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7320999a1/a972cccbd9184aceaf3dfb9cf4d99696/FLAGfe4a8cb26 [2018-11-07 14:53:14,597 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:53:14,598 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label34_true-unreach-call.c [2018-11-07 14:53:14,637 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7320999a1/a972cccbd9184aceaf3dfb9cf4d99696/FLAGfe4a8cb26 [2018-11-07 14:53:14,657 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7320999a1/a972cccbd9184aceaf3dfb9cf4d99696 [2018-11-07 14:53:14,669 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:53:14,672 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:53:14,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:53:14,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:53:14,677 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:53:14,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:53:14" (1/1) ... [2018-11-07 14:53:14,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a3a71b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:14, skipping insertion in model container [2018-11-07 14:53:14,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:53:14" (1/1) ... [2018-11-07 14:53:14,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:53:14,920 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:53:16,481 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:53:16,486 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:53:17,137 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:53:17,173 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:53:17,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:17 WrapperNode [2018-11-07 14:53:17,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:53:17,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:53:17,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:53:17,175 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:53:17,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:17" (1/1) ... [2018-11-07 14:53:17,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:17" (1/1) ... [2018-11-07 14:53:17,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:53:17,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:53:17,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:53:17,566 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:53:17,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:17" (1/1) ... [2018-11-07 14:53:17,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:17" (1/1) ... [2018-11-07 14:53:17,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:17" (1/1) ... [2018-11-07 14:53:17,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:17" (1/1) ... [2018-11-07 14:53:17,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:17" (1/1) ... [2018-11-07 14:53:17,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:17" (1/1) ... [2018-11-07 14:53:17,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:17" (1/1) ... [2018-11-07 14:53:17,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:53:17,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:53:17,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:53:17,934 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:53:17,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:17" (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 [2018-11-07 14:53:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:53:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:53:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:53:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:53:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:53:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:53:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:53:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:53:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:53:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:53:18,013 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:53:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:53:18,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:53:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:53:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:53:28,252 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:53:28,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:53:28 BoogieIcfgContainer [2018-11-07 14:53:28,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:53:28,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:53:28,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:53:28,257 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:53:28,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:53:14" (1/3) ... [2018-11-07 14:53:28,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@868f2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:53:28, skipping insertion in model container [2018-11-07 14:53:28,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:17" (2/3) ... [2018-11-07 14:53:28,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@868f2ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:53:28, skipping insertion in model container [2018-11-07 14:53:28,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:53:28" (3/3) ... [2018-11-07 14:53:28,261 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label34_true-unreach-call.c [2018-11-07 14:53:28,271 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:53:28,282 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:53:28,300 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:53:28,352 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:53:28,353 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:53:28,353 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:53:28,353 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:53:28,353 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:53:28,353 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:53:28,354 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:53:28,354 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:53:28,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 14:53:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-07 14:53:28,415 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:53:28,417 INFO L375 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] [2018-11-07 14:53:28,419 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:53:28,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:53:28,424 INFO L82 PathProgramCache]: Analyzing trace with hash 784010707, now seen corresponding path program 1 times [2018-11-07 14:53:28,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:53:28,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:28,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:53:28,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:28,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:53:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:53:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:53:28,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:53:28,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:53:28,991 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:53:28,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:53:29,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:53:29,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:53:29,019 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 14:53:37,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:53:37,948 INFO L93 Difference]: Finished difference Result 3093 states and 5715 transitions. [2018-11-07 14:53:37,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:53:37,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2018-11-07 14:53:37,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:53:37,988 INFO L225 Difference]: With dead ends: 3093 [2018-11-07 14:53:37,989 INFO L226 Difference]: Without dead ends: 1971 [2018-11-07 14:53:38,001 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:53:38,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2018-11-07 14:53:38,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1957. [2018-11-07 14:53:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-11-07 14:53:38,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3535 transitions. [2018-11-07 14:53:38,158 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3535 transitions. Word has length 63 [2018-11-07 14:53:38,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:53:38,159 INFO L480 AbstractCegarLoop]: Abstraction has 1957 states and 3535 transitions. [2018-11-07 14:53:38,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:53:38,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3535 transitions. [2018-11-07 14:53:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 14:53:38,168 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:53:38,170 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:53:38,170 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:53:38,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:53:38,171 INFO L82 PathProgramCache]: Analyzing trace with hash -666764916, now seen corresponding path program 1 times [2018-11-07 14:53:38,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:53:38,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:38,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:53:38,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:38,174 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:53:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:53:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:53:38,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:53:38,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:53:38,590 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:53:38,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:53:38,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:53:38,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:53:38,593 INFO L87 Difference]: Start difference. First operand 1957 states and 3535 transitions. Second operand 6 states. [2018-11-07 14:53:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:53:52,226 INFO L93 Difference]: Finished difference Result 5627 states and 10356 transitions. [2018-11-07 14:53:52,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:53:52,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-07 14:53:52,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:53:52,257 INFO L225 Difference]: With dead ends: 5627 [2018-11-07 14:53:52,258 INFO L226 Difference]: Without dead ends: 3676 [2018-11-07 14:53:52,265 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:53:52,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2018-11-07 14:53:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3643. [2018-11-07 14:53:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2018-11-07 14:53:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5987 transitions. [2018-11-07 14:53:52,380 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5987 transitions. Word has length 146 [2018-11-07 14:53:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:53:52,381 INFO L480 AbstractCegarLoop]: Abstraction has 3643 states and 5987 transitions. [2018-11-07 14:53:52,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:53:52,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5987 transitions. [2018-11-07 14:53:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-07 14:53:52,386 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:53:52,386 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:53:52,386 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:53:52,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:53:52,387 INFO L82 PathProgramCache]: Analyzing trace with hash -646191812, now seen corresponding path program 1 times [2018-11-07 14:53:52,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:53:52,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:52,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:53:52,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:52,389 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:53:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:53:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:53:52,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:53:52,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:53:52,627 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:53:52,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:53:52,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:53:52,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:53:52,628 INFO L87 Difference]: Start difference. First operand 3643 states and 5987 transitions. Second operand 5 states. [2018-11-07 14:54:02,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:02,548 INFO L93 Difference]: Finished difference Result 10947 states and 18497 transitions. [2018-11-07 14:54:02,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:54:02,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2018-11-07 14:54:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:02,595 INFO L225 Difference]: With dead ends: 10947 [2018-11-07 14:54:02,595 INFO L226 Difference]: Without dead ends: 7310 [2018-11-07 14:54:02,609 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:54:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7310 states. [2018-11-07 14:54:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7310 to 7122. [2018-11-07 14:54:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7122 states. [2018-11-07 14:54:02,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7122 states to 7122 states and 10912 transitions. [2018-11-07 14:54:02,815 INFO L78 Accepts]: Start accepts. Automaton has 7122 states and 10912 transitions. Word has length 162 [2018-11-07 14:54:02,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:02,816 INFO L480 AbstractCegarLoop]: Abstraction has 7122 states and 10912 transitions. [2018-11-07 14:54:02,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:54:02,816 INFO L276 IsEmpty]: Start isEmpty. Operand 7122 states and 10912 transitions. [2018-11-07 14:54:02,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-11-07 14:54:02,822 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:02,823 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:54:02,823 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:02,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:02,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1378098232, now seen corresponding path program 1 times [2018-11-07 14:54:02,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:02,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:02,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:02,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:02,830 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:03,206 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:54:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:03,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:54:03,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:54:03,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:03,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:54:03,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:54:03,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:54:03,650 INFO L87 Difference]: Start difference. First operand 7122 states and 10912 transitions. Second operand 6 states. [2018-11-07 14:54:13,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:13,378 INFO L93 Difference]: Finished difference Result 19748 states and 31238 transitions. [2018-11-07 14:54:13,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:54:13,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2018-11-07 14:54:13,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:13,455 INFO L225 Difference]: With dead ends: 19748 [2018-11-07 14:54:13,455 INFO L226 Difference]: Without dead ends: 12632 [2018-11-07 14:54:13,496 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:54:13,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12632 states. [2018-11-07 14:54:13,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12632 to 12430. [2018-11-07 14:54:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12430 states. [2018-11-07 14:54:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12430 states to 12430 states and 18009 transitions. [2018-11-07 14:54:13,846 INFO L78 Accepts]: Start accepts. Automaton has 12430 states and 18009 transitions. Word has length 199 [2018-11-07 14:54:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:13,847 INFO L480 AbstractCegarLoop]: Abstraction has 12430 states and 18009 transitions. [2018-11-07 14:54:13,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:54:13,847 INFO L276 IsEmpty]: Start isEmpty. Operand 12430 states and 18009 transitions. [2018-11-07 14:54:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-07 14:54:13,856 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:13,856 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:54:13,857 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:13,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:13,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1937080759, now seen corresponding path program 1 times [2018-11-07 14:54:13,857 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:13,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:13,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:13,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:13,859 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:14,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:54:14,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:54:14,292 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:14,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:54:14,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:54:14,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:54:14,294 INFO L87 Difference]: Start difference. First operand 12430 states and 18009 transitions. Second operand 6 states. [2018-11-07 14:54:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:28,193 INFO L93 Difference]: Finished difference Result 42981 states and 69563 transitions. [2018-11-07 14:54:28,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 14:54:28,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2018-11-07 14:54:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:28,369 INFO L225 Difference]: With dead ends: 42981 [2018-11-07 14:54:28,370 INFO L226 Difference]: Without dead ends: 30557 [2018-11-07 14:54:28,462 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 14:54:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30557 states. [2018-11-07 14:54:29,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30557 to 30318. [2018-11-07 14:54:29,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30318 states. [2018-11-07 14:54:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30318 states to 30318 states and 43989 transitions. [2018-11-07 14:54:29,631 INFO L78 Accepts]: Start accepts. Automaton has 30318 states and 43989 transitions. Word has length 221 [2018-11-07 14:54:29,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:29,631 INFO L480 AbstractCegarLoop]: Abstraction has 30318 states and 43989 transitions. [2018-11-07 14:54:29,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:54:29,633 INFO L276 IsEmpty]: Start isEmpty. Operand 30318 states and 43989 transitions. [2018-11-07 14:54:29,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-07 14:54:29,647 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:29,647 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:54:29,648 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:29,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:29,648 INFO L82 PathProgramCache]: Analyzing trace with hash -561084943, now seen corresponding path program 1 times [2018-11-07 14:54:29,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:29,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:29,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:29,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:29,650 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:29,996 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:54:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:30,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:54:30,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:54:30,429 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:30,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:54:30,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:54:30,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:54:30,430 INFO L87 Difference]: Start difference. First operand 30318 states and 43989 transitions. Second operand 6 states. [2018-11-07 14:54:41,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:41,167 INFO L93 Difference]: Finished difference Result 73864 states and 116117 transitions. [2018-11-07 14:54:41,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:54:41,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 244 [2018-11-07 14:54:41,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:41,389 INFO L225 Difference]: With dead ends: 73864 [2018-11-07 14:54:41,389 INFO L226 Difference]: Without dead ends: 43552 [2018-11-07 14:54:41,492 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:54:41,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43552 states. [2018-11-07 14:54:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43552 to 43242. [2018-11-07 14:54:42,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43242 states. [2018-11-07 14:54:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43242 states to 43242 states and 61380 transitions. [2018-11-07 14:54:42,663 INFO L78 Accepts]: Start accepts. Automaton has 43242 states and 61380 transitions. Word has length 244 [2018-11-07 14:54:42,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:42,664 INFO L480 AbstractCegarLoop]: Abstraction has 43242 states and 61380 transitions. [2018-11-07 14:54:42,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:54:42,664 INFO L276 IsEmpty]: Start isEmpty. Operand 43242 states and 61380 transitions. [2018-11-07 14:54:42,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-11-07 14:54:42,685 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:42,685 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:54:42,685 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:42,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:42,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1537806897, now seen corresponding path program 1 times [2018-11-07 14:54:42,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:42,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:42,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:42,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:42,687 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 112 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:54:43,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:54:43,066 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:54:43,067 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2018-11-07 14:54:43,069 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3031], [3033], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3257], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3285], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 14:54:43,126 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:54:43,127 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:54:44,070 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:54:44,072 INFO L272 AbstractInterpreter]: Visited 111 different actions 111 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 14:54:44,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:44,116 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:54:45,285 INFO L227 lantSequenceWeakener]: Weakened 246 states. On average, predicates are now at 71.68% of their original sizes. [2018-11-07 14:54:45,285 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:54:46,203 INFO L415 sIntCurrentIteration]: We unified 267 AI predicates to 267 [2018-11-07 14:54:46,204 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:54:46,206 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:54:46,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-07 14:54:46,207 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:46,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 14:54:46,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 14:54:46,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 14:54:46,208 INFO L87 Difference]: Start difference. First operand 43242 states and 61380 transitions. Second operand 11 states. [2018-11-07 14:54:56,270 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown