java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:46:50,587 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:46:50,589 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:46:50,609 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:46:50,609 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:46:50,610 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:46:50,612 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:46:50,613 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:46:50,615 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:46:50,616 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:46:50,618 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:46:50,618 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:46:50,620 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:46:50,621 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:46:50,624 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:46:50,626 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:46:50,627 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:46:50,629 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:46:50,639 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:46:50,641 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:46:50,643 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:46:50,645 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:46:50,647 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:46:50,653 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:46:50,654 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:46:50,654 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:46:50,655 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:46:50,655 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:46:50,673 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:46:50,673 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:46:50,674 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:46:50,674 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:46:50,675 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:46:50,675 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:46:50,675 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:46:50,675 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:46:50,675 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:46:50,676 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:46:50,676 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:46:50,676 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:46:50,677 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:46:50,677 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:46:50,677 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:46:50,677 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:46:50,678 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:46:50,678 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:46:50,678 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:46:50,678 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:46:50,678 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:46:50,679 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:46:50,679 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:46:50,679 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:46:50,679 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:46:50,679 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:46:50,680 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:46:50,680 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:46:50,680 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:46:50,680 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:46:50,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:46:50,681 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:46:50,681 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:46:50,681 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:46:50,730 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:46:50,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:46:50,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:46:50,756 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:46:50,756 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:46:50,757 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c [2018-10-24 21:46:50,828 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b0118562f/9d8ff1a0d071408988f5a5159d92a15e/FLAG45eb0b45f [2018-10-24 21:46:51,531 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:46:51,532 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c [2018-10-24 21:46:51,551 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b0118562f/9d8ff1a0d071408988f5a5159d92a15e/FLAG45eb0b45f [2018-10-24 21:46:51,568 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b0118562f/9d8ff1a0d071408988f5a5159d92a15e [2018-10-24 21:46:51,579 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:46:51,581 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:46:51,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:46:51,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:46:51,587 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:46:51,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:46:51" (1/1) ... [2018-10-24 21:46:51,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:51, skipping insertion in model container [2018-10-24 21:46:51,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:46:51" (1/1) ... [2018-10-24 21:46:51,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:46:51,695 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:46:52,516 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:46:52,521 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:46:52,825 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:46:52,849 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:46:52,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:52 WrapperNode [2018-10-24 21:46:52,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:46:52,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:46:52,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:46:52,851 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:46:52,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:52" (1/1) ... [2018-10-24 21:46:52,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:52" (1/1) ... [2018-10-24 21:46:53,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:46:53,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:46:53,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:46:53,268 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:46:53,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:52" (1/1) ... [2018-10-24 21:46:53,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:52" (1/1) ... [2018-10-24 21:46:53,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:52" (1/1) ... [2018-10-24 21:46:53,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:52" (1/1) ... [2018-10-24 21:46:53,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:52" (1/1) ... [2018-10-24 21:46:53,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:52" (1/1) ... [2018-10-24 21:46:53,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:52" (1/1) ... [2018-10-24 21:46:53,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:46:53,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:46:53,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:46:53,502 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:46:53,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 21:46:53,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:46:53,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:46:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:46:53,578 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:46:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:46:53,578 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:46:53,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:46:53,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:46:53,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:46:53,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:47:02,528 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:47:02,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:02 BoogieIcfgContainer [2018-10-24 21:47:02,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:47:02,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:47:02,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:47:02,536 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:47:02,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:46:51" (1/3) ... [2018-10-24 21:47:02,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efba6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:47:02, skipping insertion in model container [2018-10-24 21:47:02,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:52" (2/3) ... [2018-10-24 21:47:02,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efba6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:47:02, skipping insertion in model container [2018-10-24 21:47:02,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:02" (3/3) ... [2018-10-24 21:47:02,542 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label16_true-unreach-call.c [2018-10-24 21:47:02,553 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:47:02,573 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:47:02,593 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:47:02,638 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:47:02,638 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:47:02,638 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:47:02,639 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:47:02,639 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:47:02,639 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:47:02,639 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:47:02,639 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:47:02,673 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 21:47:02,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-24 21:47:02,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:47:02,685 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, 1, 1, 1, 1, 1, 1] [2018-10-24 21:47:02,687 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:47:02,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:47:02,693 INFO L82 PathProgramCache]: Analyzing trace with hash 539142097, now seen corresponding path program 1 times [2018-10-24 21:47:02,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:47:02,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:02,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:47:02,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:02,747 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:47:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:47:03,263 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:47:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:47:03,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:47:03,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:47:03,322 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:47:03,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:47:03,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:47:03,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:47:03,349 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-24 21:47:10,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:47:10,536 INFO L93 Difference]: Finished difference Result 1194 states and 2150 transitions. [2018-10-24 21:47:10,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:47:10,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-10-24 21:47:10,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:47:10,565 INFO L225 Difference]: With dead ends: 1194 [2018-10-24 21:47:10,566 INFO L226 Difference]: Without dead ends: 754 [2018-10-24 21:47:10,577 INFO L605 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 [2018-10-24 21:47:10,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-10-24 21:47:10,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2018-10-24 21:47:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2018-10-24 21:47:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1316 transitions. [2018-10-24 21:47:10,679 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1316 transitions. Word has length 69 [2018-10-24 21:47:10,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:47:10,680 INFO L481 AbstractCegarLoop]: Abstraction has 754 states and 1316 transitions. [2018-10-24 21:47:10,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:47:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1316 transitions. [2018-10-24 21:47:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 21:47:10,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:47:10,694 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, 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] [2018-10-24 21:47:10,694 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:47:10,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:47:10,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1189160704, now seen corresponding path program 1 times [2018-10-24 21:47:10,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:47:10,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:10,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:47:10,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:10,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:47:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:47:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:47:11,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:47:11,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:47:11,012 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:47:11,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:47:11,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:47:11,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:47:11,015 INFO L87 Difference]: Start difference. First operand 754 states and 1316 transitions. Second operand 5 states. [2018-10-24 21:47:29,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:47:29,126 INFO L93 Difference]: Finished difference Result 2824 states and 5080 transitions. [2018-10-24 21:47:29,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:47:29,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-10-24 21:47:29,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:47:29,147 INFO L225 Difference]: With dead ends: 2824 [2018-10-24 21:47:29,148 INFO L226 Difference]: Without dead ends: 2076 [2018-10-24 21:47:29,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:47:29,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2018-10-24 21:47:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2049. [2018-10-24 21:47:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2049 states. [2018-10-24 21:47:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 3215 transitions. [2018-10-24 21:47:29,256 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 3215 transitions. Word has length 149 [2018-10-24 21:47:29,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:47:29,257 INFO L481 AbstractCegarLoop]: Abstraction has 2049 states and 3215 transitions. [2018-10-24 21:47:29,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:47:29,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 3215 transitions. [2018-10-24 21:47:29,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 21:47:29,262 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:47:29,263 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, 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] [2018-10-24 21:47:29,263 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:47:29,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:47:29,264 INFO L82 PathProgramCache]: Analyzing trace with hash -719504888, now seen corresponding path program 1 times [2018-10-24 21:47:29,264 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:47:29,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:29,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:47:29,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:29,265 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:47:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:47:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:47:29,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:47:29,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:47:29,679 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:47:29,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:47:29,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:47:29,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:47:29,683 INFO L87 Difference]: Start difference. First operand 2049 states and 3215 transitions. Second operand 6 states. [2018-10-24 21:47:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:47:41,785 INFO L93 Difference]: Finished difference Result 6277 states and 10296 transitions. [2018-10-24 21:47:41,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:47:41,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-10-24 21:47:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:47:41,816 INFO L225 Difference]: With dead ends: 6277 [2018-10-24 21:47:41,816 INFO L226 Difference]: Without dead ends: 4234 [2018-10-24 21:47:41,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:47:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2018-10-24 21:47:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 4179. [2018-10-24 21:47:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4179 states. [2018-10-24 21:47:41,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 6129 transitions. [2018-10-24 21:47:41,967 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 6129 transitions. Word has length 153 [2018-10-24 21:47:41,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:47:41,968 INFO L481 AbstractCegarLoop]: Abstraction has 4179 states and 6129 transitions. [2018-10-24 21:47:41,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:47:41,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 6129 transitions. [2018-10-24 21:47:41,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-24 21:47:41,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:47:41,976 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, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 21:47:41,976 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:47:41,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:47:41,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1625872252, now seen corresponding path program 1 times [2018-10-24 21:47:41,977 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:47:41,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:41,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:47:41,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:41,978 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:47:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:47:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 125 proven. 63 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 21:47:42,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:47:42,332 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:47:42,334 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-24 21:47:42,335 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:47:42,403 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:47:42,403 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:47:44,081 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:47:44,646 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:47:44,648 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:47:44,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:47:44,660 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:47:46,755 INFO L232 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 78.44% of their original sizes. [2018-10-24 21:47:46,755 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:47:47,197 INFO L413 sIntCurrentIteration]: We have 222 unified AI predicates [2018-10-24 21:47:47,197 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:47:47,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:47:47,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:47:47,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:47:47,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:47:47,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:47:47,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:47:47,204 INFO L87 Difference]: Start difference. First operand 4179 states and 6129 transitions. Second operand 7 states. [2018-10-24 21:48:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:48:56,739 INFO L93 Difference]: Finished difference Result 8662 states and 12607 transitions. [2018-10-24 21:48:56,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:48:56,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2018-10-24 21:48:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:48:56,763 INFO L225 Difference]: With dead ends: 8662 [2018-10-24 21:48:56,763 INFO L226 Difference]: Without dead ends: 4489 [2018-10-24 21:48:56,774 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 223 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:48:56,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2018-10-24 21:48:56,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4487. [2018-10-24 21:48:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4487 states. [2018-10-24 21:48:56,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 6446 transitions. [2018-10-24 21:48:56,892 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 6446 transitions. Word has length 223 [2018-10-24 21:48:56,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:48:56,892 INFO L481 AbstractCegarLoop]: Abstraction has 4487 states and 6446 transitions. [2018-10-24 21:48:56,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:48:56,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 6446 transitions. [2018-10-24 21:48:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-24 21:48:56,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:48:56,901 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:48:56,902 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:48:56,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:56,902 INFO L82 PathProgramCache]: Analyzing trace with hash -378898114, now seen corresponding path program 1 times [2018-10-24 21:48:56,902 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:48:56,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:56,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:56,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:56,903 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:48:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 125 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 21:48:57,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:48:57,244 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:48:57,244 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-10-24 21:48:57,245 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:48:57,250 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:48:57,250 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:48:58,070 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:49:03,699 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:49:03,699 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:49:03,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:49:03,711 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:49:06,914 INFO L232 lantSequenceWeakener]: Weakened 36 states. On average, predicates are now at 78.91% of their original sizes. [2018-10-24 21:49:06,915 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 21:50:53,994 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:50:54,003 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:50:54,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:50:54 BoogieIcfgContainer [2018-10-24 21:50:54,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:50:54,005 INFO L168 Benchmark]: Toolchain (without parser) took 242424.55 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:50:54,006 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:50:54,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1267.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:50:54,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 415.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -889.1 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:50:54,011 INFO L168 Benchmark]: Boogie Preprocessor took 233.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:50:54,018 INFO L168 Benchmark]: RCFGBuilder took 9027.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 304.8 MB). Peak memory consumption was 304.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:50:54,019 INFO L168 Benchmark]: TraceAbstraction took 231471.52 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -950.4 MB). Peak memory consumption was 711.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:50:54,027 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1267.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 415.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -889.1 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 233.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9027.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 304.8 MB). Peak memory consumption was 304.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231471.52 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -950.4 MB). Peak memory consumption was 711.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 193]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 193). Cancelled while BasicCegarLoop was analyzing trace of length 250 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 231.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 107.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 991 SDtfs, 3990 SDslu, 885 SDs, 0 SdLazy, 8423 SolverSat, 1707 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 77.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 248 GetRequests, 226 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4487occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9953438174529755 AbsIntWeakeningRatio, 0.11063829787234042 AbsIntAvgWeakeningVarsNumRemoved, 638.5489361702128 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 84 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 594 NumberOfCodeBlocks, 594 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 590 ConstructedInterpolants, 0 QuantifiedInterpolants, 410736 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 255/318 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown