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/Problem12_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 11:48:53,545 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 11:48:53,547 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 11:48:53,560 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 11:48:53,560 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 11:48:53,561 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 11:48:53,562 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 11:48:53,564 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 11:48:53,566 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 11:48:53,567 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 11:48:53,568 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 11:48:53,568 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 11:48:53,569 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 11:48:53,570 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 11:48:53,571 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 11:48:53,572 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 11:48:53,573 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 11:48:53,575 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 11:48:53,577 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 11:48:53,579 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 11:48:53,580 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 11:48:53,581 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 11:48:53,583 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 11:48:53,584 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 11:48:53,584 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 11:48:53,585 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 11:48:53,586 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 11:48:53,587 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 11:48:53,588 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 11:48:53,592 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 11:48:53,592 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 11:48:53,593 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 11:48:53,593 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 11:48:53,593 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 11:48:53,594 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 11:48:53,595 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 11:48:53,595 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 11:48:53,612 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 11:48:53,612 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 11:48:53,613 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 11:48:53,613 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 11:48:53,613 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 11:48:53,613 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 11:48:53,614 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 11:48:53,614 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 11:48:53,614 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 11:48:53,614 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 11:48:53,614 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 11:48:53,615 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 11:48:53,615 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 11:48:53,616 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 11:48:53,616 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 11:48:53,616 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 11:48:53,616 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 11:48:53,616 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 11:48:53,617 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 11:48:53,617 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 11:48:53,617 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 11:48:53,617 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 11:48:53,618 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 11:48:53,618 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 11:48:53,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 11:48:53,618 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 11:48:53,618 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 11:48:53,619 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 11:48:53,619 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 11:48:53,619 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 11:48:53,619 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 11:48:53,619 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 11:48:53,620 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 11:48:53,620 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 11:48:53,666 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 11:48:53,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 11:48:53,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 11:48:53,690 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 11:48:53,690 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 11:48:53,691 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label30_false-unreach-call.c [2018-11-07 11:48:53,768 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19cdd5396/303eceec9109471f9f8b6e836edac0bf/FLAG0d3dc146f [2018-11-07 11:48:54,568 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 11:48:54,569 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label30_false-unreach-call.c [2018-11-07 11:48:54,603 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19cdd5396/303eceec9109471f9f8b6e836edac0bf/FLAG0d3dc146f [2018-11-07 11:48:54,622 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19cdd5396/303eceec9109471f9f8b6e836edac0bf [2018-11-07 11:48:54,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 11:48:54,640 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 11:48:54,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 11:48:54,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 11:48:54,646 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 11:48:54,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:48:54" (1/1) ... [2018-11-07 11:48:54,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386f4038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:48:54, skipping insertion in model container [2018-11-07 11:48:54,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:48:54" (1/1) ... [2018-11-07 11:48:54,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 11:48:54,828 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 11:48:56,164 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:48:56,171 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 11:48:56,921 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:48:56,959 INFO L193 MainTranslator]: Completed translation [2018-11-07 11:48:56,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:48:56 WrapperNode [2018-11-07 11:48:56,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 11:48:56,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 11:48:56,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 11:48:56,961 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 11:48:56,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:48:56" (1/1) ... [2018-11-07 11:48:57,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:48:56" (1/1) ... [2018-11-07 11:48:57,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 11:48:57,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 11:48:57,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 11:48:57,371 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 11:48:57,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:48:56" (1/1) ... [2018-11-07 11:48:57,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:48:56" (1/1) ... [2018-11-07 11:48:57,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:48:56" (1/1) ... [2018-11-07 11:48:57,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:48:56" (1/1) ... [2018-11-07 11:48:57,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:48:56" (1/1) ... [2018-11-07 11:48:57,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:48:56" (1/1) ... [2018-11-07 11:48:57,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:48:56" (1/1) ... [2018-11-07 11:48:57,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 11:48:57,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 11:48:57,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 11:48:57,702 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 11:48:57,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:48:56" (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 11:48:57,773 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 11:48:57,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 11:48:57,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 11:48:57,774 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 11:48:57,774 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 11:48:57,775 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 11:48:57,775 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 11:48:57,775 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 11:48:57,775 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 11:48:57,775 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 11:48:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 11:48:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 11:48:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 11:48:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 11:48:57,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 11:49:07,437 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 11:49:07,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:49:07 BoogieIcfgContainer [2018-11-07 11:49:07,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 11:49:07,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 11:49:07,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 11:49:07,443 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 11:49:07,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:48:54" (1/3) ... [2018-11-07 11:49:07,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9a67f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:49:07, skipping insertion in model container [2018-11-07 11:49:07,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:48:56" (2/3) ... [2018-11-07 11:49:07,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9a67f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:49:07, skipping insertion in model container [2018-11-07 11:49:07,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:49:07" (3/3) ... [2018-11-07 11:49:07,447 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label30_false-unreach-call.c [2018-11-07 11:49:07,458 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 11:49:07,469 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 11:49:07,485 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 11:49:07,533 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 11:49:07,534 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 11:49:07,534 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 11:49:07,534 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 11:49:07,534 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 11:49:07,535 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 11:49:07,535 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 11:49:07,535 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 11:49:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 11:49:07,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-07 11:49:07,595 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:49:07,596 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] [2018-11-07 11:49:07,598 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:49:07,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:49:07,603 INFO L82 PathProgramCache]: Analyzing trace with hash -145223636, now seen corresponding path program 1 times [2018-11-07 11:49:07,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:49:07,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:49:07,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:49:07,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:49:07,665 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:49:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:49:08,090 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-07 11:49:08,107 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 11:49:08,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:49:08,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 11:49:08,114 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:49:08,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 11:49:08,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 11:49:08,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:49:08,142 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-07 11:49:19,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:49:19,975 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-07 11:49:19,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 11:49:19,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-11-07 11:49:19,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:49:20,024 INFO L225 Difference]: With dead ends: 3234 [2018-11-07 11:49:20,024 INFO L226 Difference]: Without dead ends: 2388 [2018-11-07 11:49:20,037 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:49:20,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-07 11:49:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-11-07 11:49:20,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-11-07 11:49:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3845 transitions. [2018-11-07 11:49:20,231 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3845 transitions. Word has length 32 [2018-11-07 11:49:20,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:49:20,231 INFO L480 AbstractCegarLoop]: Abstraction has 2388 states and 3845 transitions. [2018-11-07 11:49:20,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 11:49:20,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3845 transitions. [2018-11-07 11:49:20,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 11:49:20,239 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:49:20,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:20,241 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:49:20,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:49:20,242 INFO L82 PathProgramCache]: Analyzing trace with hash 552295319, now seen corresponding path program 1 times [2018-11-07 11:49:20,242 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:49:20,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:49:20,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:49:20,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:49:20,245 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:49:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:49:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:49:20,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:49:20,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:49:20,679 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:49:20,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:49:20,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:49:20,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:49:20,682 INFO L87 Difference]: Start difference. First operand 2388 states and 3845 transitions. Second operand 6 states. [2018-11-07 11:49:34,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:49:34,686 INFO L93 Difference]: Finished difference Result 9463 states and 15573 transitions. [2018-11-07 11:49:34,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:49:34,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-07 11:49:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:49:34,743 INFO L225 Difference]: With dead ends: 9463 [2018-11-07 11:49:34,744 INFO L226 Difference]: Without dead ends: 7081 [2018-11-07 11:49:34,759 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:49:34,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2018-11-07 11:49:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 7037. [2018-11-07 11:49:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2018-11-07 11:49:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 10229 transitions. [2018-11-07 11:49:34,998 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 10229 transitions. Word has length 113 [2018-11-07 11:49:34,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:49:34,999 INFO L480 AbstractCegarLoop]: Abstraction has 7037 states and 10229 transitions. [2018-11-07 11:49:34,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:49:34,999 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 10229 transitions. [2018-11-07 11:49:35,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-07 11:49:35,005 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:49:35,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:35,006 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:49:35,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:49:35,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1059149049, now seen corresponding path program 1 times [2018-11-07 11:49:35,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:49:35,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:49:35,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:49:35,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:49:35,008 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:49:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:49:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:49:35,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:49:35,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:49:35,187 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:49:35,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:49:35,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:49:35,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:49:35,189 INFO L87 Difference]: Start difference. First operand 7037 states and 10229 transitions. Second operand 6 states. [2018-11-07 11:49:44,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:49:44,545 INFO L93 Difference]: Finished difference Result 23489 states and 35291 transitions. [2018-11-07 11:49:44,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:49:44,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-11-07 11:49:44,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:49:44,642 INFO L225 Difference]: With dead ends: 23489 [2018-11-07 11:49:44,642 INFO L226 Difference]: Without dead ends: 16458 [2018-11-07 11:49:44,686 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 11:49:44,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16458 states. [2018-11-07 11:49:45,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16458 to 16369. [2018-11-07 11:49:45,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16369 states. [2018-11-07 11:49:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16369 states to 16369 states and 22454 transitions. [2018-11-07 11:49:45,097 INFO L78 Accepts]: Start accepts. Automaton has 16369 states and 22454 transitions. Word has length 121 [2018-11-07 11:49:45,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:49:45,097 INFO L480 AbstractCegarLoop]: Abstraction has 16369 states and 22454 transitions. [2018-11-07 11:49:45,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:49:45,098 INFO L276 IsEmpty]: Start isEmpty. Operand 16369 states and 22454 transitions. [2018-11-07 11:49:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 11:49:45,103 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:49:45,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:45,104 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:49:45,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:49:45,104 INFO L82 PathProgramCache]: Analyzing trace with hash -128929438, now seen corresponding path program 1 times [2018-11-07 11:49:45,105 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:49:45,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:49:45,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:49:45,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:49:45,106 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:49:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:49:45,404 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 11:49:45,668 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:49:45,669 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:49:45,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:49:45,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:49:45,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:49:45,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:49:45,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:49:45,670 INFO L87 Difference]: Start difference. First operand 16369 states and 22454 transitions. Second operand 6 states. [2018-11-07 11:49:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:49:57,627 INFO L93 Difference]: Finished difference Result 51805 states and 75181 transitions. [2018-11-07 11:49:57,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:49:57,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-07 11:49:57,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:49:57,802 INFO L225 Difference]: With dead ends: 51805 [2018-11-07 11:49:57,803 INFO L226 Difference]: Without dead ends: 35442 [2018-11-07 11:49:57,872 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:49:57,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35442 states. [2018-11-07 11:49:58,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35442 to 35319. [2018-11-07 11:49:58,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35319 states. [2018-11-07 11:49:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35319 states to 35319 states and 49477 transitions. [2018-11-07 11:49:58,866 INFO L78 Accepts]: Start accepts. Automaton has 35319 states and 49477 transitions. Word has length 146 [2018-11-07 11:49:58,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:49:58,868 INFO L480 AbstractCegarLoop]: Abstraction has 35319 states and 49477 transitions. [2018-11-07 11:49:58,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:49:58,868 INFO L276 IsEmpty]: Start isEmpty. Operand 35319 states and 49477 transitions. [2018-11-07 11:49:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-07 11:49:58,880 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:49:58,880 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 11:49:58,880 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:49:58,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:49:58,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1800636461, now seen corresponding path program 1 times [2018-11-07 11:49:58,884 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:49:58,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:49:58,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:49:58,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:49:58,885 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:49:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:49:59,192 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 11:49:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 11:49:59,605 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 11:49:59,605 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 11:49:59,606 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-11-07 11:49:59,608 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2023], [2025], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2388], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2480], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 11:49:59,693 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 11:49:59,693 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 11:50:00,328 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 11:50:00,330 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 11:50:00,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:50:00,382 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 11:50:00,944 INFO L227 lantSequenceWeakener]: Weakened 200 states. On average, predicates are now at 75.2% of their original sizes. [2018-11-07 11:50:00,944 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 11:50:01,408 INFO L415 sIntCurrentIteration]: We unified 208 AI predicates to 208 [2018-11-07 11:50:01,408 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 11:50:01,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 11:50:01,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 11:50:01,410 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:50:01,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 11:50:01,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 11:50:01,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 11:50:01,411 INFO L87 Difference]: Start difference. First operand 35319 states and 49477 transitions. Second operand 8 states. [2018-11-07 11:50:08,406 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 11:52:53,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 11:52:53,618 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 11:52:53,623 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 11:52:53,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 11:52:53 BoogieIcfgContainer [2018-11-07 11:52:53,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 11:52:53,624 INFO L168 Benchmark]: Toolchain (without parser) took 238986.14 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -305.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 11:52:53,626 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 11:52:53,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2319.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Peak memory consumption was 192.9 MB. Max. memory is 7.1 GB. [2018-11-07 11:52:53,627 INFO L168 Benchmark]: Boogie Procedure Inliner took 409.22 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -974.2 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 11:52:53,628 INFO L168 Benchmark]: Boogie Preprocessor took 331.40 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2018-11-07 11:52:53,629 INFO L168 Benchmark]: RCFGBuilder took 9735.61 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 658.1 MB). Peak memory consumption was 658.1 MB. Max. memory is 7.1 GB. [2018-11-07 11:52:53,630 INFO L168 Benchmark]: TraceAbstraction took 226185.13 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -207.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 11:52:53,646 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2319.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 192.9 MB). Peak memory consumption was 192.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 409.22 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -974.2 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 331.40 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9735.61 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 658.1 MB). Peak memory consumption was 658.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226185.13 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -207.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 87). Cancelled while BasicCegarLoop was constructing difference of abstraction (35319states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (13380 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 226.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 219.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1033 SDtfs, 15163 SDslu, 704 SDs, 0 SdLazy, 24566 SolverSat, 6699 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 198.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 246 GetRequests, 212 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35319occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9975256853653593 AbsIntWeakeningRatio, 0.12980769230769232 AbsIntAvgWeakeningVarsNumRemoved, 19.14423076923077 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 256 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 621 NumberOfCodeBlocks, 621 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 616 ConstructedInterpolants, 0 QuantifiedInterpolants, 473246 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 130/202 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown