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/Problem16_label15_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:41:01,582 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:41:01,588 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:41:01,601 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:41:01,601 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:41:01,602 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:41:01,604 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:41:01,607 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:41:01,611 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:41:01,612 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:41:01,615 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:41:01,615 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:41:01,616 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:41:01,620 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:41:01,621 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:41:01,623 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:41:01,624 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:41:01,628 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:41:01,631 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:41:01,633 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:41:01,636 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:41:01,637 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:41:01,641 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:41:01,651 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 [2018-10-23 22:41:01,679 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:41:01,680 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:41:01,681 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:41:01,681 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:41:01,681 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:41:01,681 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:41:01,681 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:41:01,682 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:41:01,682 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:41:01,682 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:41:01,682 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:41:01,682 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:41:01,683 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:41:01,683 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:41:01,683 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:41:01,683 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:41:01,684 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:41:01,684 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:41:01,684 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:41:01,684 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:41:01,684 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:41:01,685 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:41:01,685 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:41:01,685 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:41:01,685 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:41:01,685 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:41:01,686 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:41:01,686 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:41:01,686 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:41:01,686 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:41:01,686 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:41:01,687 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:41:01,687 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:41:01,687 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:41:01,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:41:01,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:41:01,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:41:01,748 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:41:01,748 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:41:01,749 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label15_false-unreach-call.c [2018-10-23 22:41:01,829 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1b78dac2e/02ed40f6846240a5ae2a8ce273864ae6/FLAG9d67f722a [2018-10-23 22:41:02,491 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:41:02,493 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label15_false-unreach-call.c [2018-10-23 22:41:02,514 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1b78dac2e/02ed40f6846240a5ae2a8ce273864ae6/FLAG9d67f722a [2018-10-23 22:41:02,530 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1b78dac2e/02ed40f6846240a5ae2a8ce273864ae6 [2018-10-23 22:41:02,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:41:02,541 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:41:02,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:41:02,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:41:02,546 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:41:02,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:41:02" (1/1) ... [2018-10-23 22:41:02,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e73541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:02, skipping insertion in model container [2018-10-23 22:41:02,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:41:02" (1/1) ... [2018-10-23 22:41:02,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:41:02,648 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:41:03,371 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:41:03,376 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:41:03,633 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:41:03,656 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:41:03,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:03 WrapperNode [2018-10-23 22:41:03,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:41:03,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:41:03,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:41:03,658 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:41:03,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:03" (1/1) ... [2018-10-23 22:41:03,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:03" (1/1) ... [2018-10-23 22:41:03,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:41:03,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:41:03,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:41:03,977 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:41:03,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:03" (1/1) ... [2018-10-23 22:41:03,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:03" (1/1) ... [2018-10-23 22:41:04,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:03" (1/1) ... [2018-10-23 22:41:04,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:03" (1/1) ... [2018-10-23 22:41:04,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:03" (1/1) ... [2018-10-23 22:41:04,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:03" (1/1) ... [2018-10-23 22:41:04,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:03" (1/1) ... [2018-10-23 22:41:04,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:41:04,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:41:04,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:41:04,149 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:41:04,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:03" (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 [2018-10-23 22:41:04,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:41:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:41:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:41:04,225 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:41:04,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:41:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:41:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:41:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:41:04,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:41:04,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:41:10,446 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:41:10,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:41:10 BoogieIcfgContainer [2018-10-23 22:41:10,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:41:10,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:41:10,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:41:10,453 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:41:10,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:41:02" (1/3) ... [2018-10-23 22:41:10,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c24961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:41:10, skipping insertion in model container [2018-10-23 22:41:10,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:41:03" (2/3) ... [2018-10-23 22:41:10,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c24961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:41:10, skipping insertion in model container [2018-10-23 22:41:10,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:41:10" (3/3) ... [2018-10-23 22:41:10,456 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label15_false-unreach-call.c [2018-10-23 22:41:10,467 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:41:10,478 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:41:10,496 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:41:10,537 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:41:10,537 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:41:10,538 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:41:10,538 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:41:10,538 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:41:10,538 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:41:10,538 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:41:10,538 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:41:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-23 22:41:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-23 22:41:10,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:10,577 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] [2018-10-23 22:41:10,580 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:10,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:10,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1965718299, now seen corresponding path program 1 times [2018-10-23 22:41:10,588 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:10,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:10,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:10,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:10,641 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:11,057 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-23 22:41:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:41:11,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:41:11,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:41:11,090 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:41:11,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:41:11,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:41:11,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:41:11,154 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-23 22:41:16,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:41:16,899 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-23 22:41:16,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:41:16,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-10-23 22:41:16,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:41:16,941 INFO L225 Difference]: With dead ends: 1513 [2018-10-23 22:41:16,941 INFO L226 Difference]: Without dead ends: 1097 [2018-10-23 22:41:16,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:41:16,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-23 22:41:17,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-10-23 22:41:17,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-23 22:41:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1357 transitions. [2018-10-23 22:41:17,107 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1357 transitions. Word has length 29 [2018-10-23 22:41:17,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:41:17,108 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1357 transitions. [2018-10-23 22:41:17,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:41:17,108 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1357 transitions. [2018-10-23 22:41:17,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-23 22:41:17,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:17,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:41:17,121 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:17,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:17,122 INFO L82 PathProgramCache]: Analyzing trace with hash -2135341492, now seen corresponding path program 1 times [2018-10-23 22:41:17,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:17,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:17,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:17,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:17,125 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:41:17,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:41:17,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:41:17,608 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:41:17,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:41:17,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:41:17,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:41:17,611 INFO L87 Difference]: Start difference. First operand 744 states and 1357 transitions. Second operand 5 states. [2018-10-23 22:41:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:41:24,201 INFO L93 Difference]: Finished difference Result 2196 states and 4092 transitions. [2018-10-23 22:41:24,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:41:24,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-10-23 22:41:24,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:41:24,226 INFO L225 Difference]: With dead ends: 2196 [2018-10-23 22:41:24,227 INFO L226 Difference]: Without dead ends: 1458 [2018-10-23 22:41:24,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:41:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-10-23 22:41:24,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-10-23 22:41:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-10-23 22:41:24,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2551 transitions. [2018-10-23 22:41:24,325 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2551 transitions. Word has length 99 [2018-10-23 22:41:24,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:41:24,325 INFO L481 AbstractCegarLoop]: Abstraction has 1438 states and 2551 transitions. [2018-10-23 22:41:24,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:41:24,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2551 transitions. [2018-10-23 22:41:24,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-23 22:41:24,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:24,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:41:24,333 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:24,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:24,333 INFO L82 PathProgramCache]: Analyzing trace with hash 558578681, now seen corresponding path program 1 times [2018-10-23 22:41:24,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:24,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:24,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:24,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:24,335 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:41:24,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:41:24,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:41:24,561 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:41:24,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:41:24,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:41:24,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:41:24,563 INFO L87 Difference]: Start difference. First operand 1438 states and 2551 transitions. Second operand 6 states. [2018-10-23 22:41:30,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:41:30,273 INFO L93 Difference]: Finished difference Result 4239 states and 7543 transitions. [2018-10-23 22:41:30,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:41:30,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-23 22:41:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:41:30,307 INFO L225 Difference]: With dead ends: 4239 [2018-10-23 22:41:30,307 INFO L226 Difference]: Without dead ends: 2807 [2018-10-23 22:41:30,318 INFO L605 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 [2018-10-23 22:41:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2018-10-23 22:41:30,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2785. [2018-10-23 22:41:30,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2018-10-23 22:41:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4352 transitions. [2018-10-23 22:41:30,419 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4352 transitions. Word has length 102 [2018-10-23 22:41:30,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:41:30,419 INFO L481 AbstractCegarLoop]: Abstraction has 2785 states and 4352 transitions. [2018-10-23 22:41:30,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:41:30,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4352 transitions. [2018-10-23 22:41:30,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-23 22:41:30,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:30,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:41:30,422 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:30,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:30,426 INFO L82 PathProgramCache]: Analyzing trace with hash -2114066796, now seen corresponding path program 1 times [2018-10-23 22:41:30,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:30,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:30,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:30,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:30,429 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:30,896 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:41:30,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:41:30,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:41:30,896 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:41:30,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:41:30,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:41:30,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:41:30,898 INFO L87 Difference]: Start difference. First operand 2785 states and 4352 transitions. Second operand 6 states. [2018-10-23 22:41:35,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:41:35,402 INFO L93 Difference]: Finished difference Result 6952 states and 11048 transitions. [2018-10-23 22:41:35,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:41:35,410 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-10-23 22:41:35,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:41:35,435 INFO L225 Difference]: With dead ends: 6952 [2018-10-23 22:41:35,435 INFO L226 Difference]: Without dead ends: 4173 [2018-10-23 22:41:35,452 INFO L605 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 [2018-10-23 22:41:35,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2018-10-23 22:41:35,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 4153. [2018-10-23 22:41:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4153 states. [2018-10-23 22:41:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 5896 transitions. [2018-10-23 22:41:35,580 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 5896 transitions. Word has length 103 [2018-10-23 22:41:35,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:41:35,581 INFO L481 AbstractCegarLoop]: Abstraction has 4153 states and 5896 transitions. [2018-10-23 22:41:35,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:41:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 5896 transitions. [2018-10-23 22:41:35,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-23 22:41:35,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:35,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:41:35,583 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:35,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:35,584 INFO L82 PathProgramCache]: Analyzing trace with hash -377282367, now seen corresponding path program 1 times [2018-10-23 22:41:35,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:35,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:35,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:35,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:35,585 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:41:35,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:41:35,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:41:35,798 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:41:35,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:41:35,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:41:35,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:41:35,800 INFO L87 Difference]: Start difference. First operand 4153 states and 5896 transitions. Second operand 6 states. [2018-10-23 22:41:40,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:41:40,761 INFO L93 Difference]: Finished difference Result 11374 states and 16767 transitions. [2018-10-23 22:41:40,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:41:40,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2018-10-23 22:41:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:41:40,810 INFO L225 Difference]: With dead ends: 11374 [2018-10-23 22:41:40,810 INFO L226 Difference]: Without dead ends: 7227 [2018-10-23 22:41:40,840 INFO L605 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 [2018-10-23 22:41:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2018-10-23 22:41:41,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 7152. [2018-10-23 22:41:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7152 states. [2018-10-23 22:41:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 9826 transitions. [2018-10-23 22:41:41,051 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 9826 transitions. Word has length 106 [2018-10-23 22:41:41,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:41:41,052 INFO L481 AbstractCegarLoop]: Abstraction has 7152 states and 9826 transitions. [2018-10-23 22:41:41,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:41:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 9826 transitions. [2018-10-23 22:41:41,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-23 22:41:41,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:41,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:41:41,055 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:41,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:41,056 INFO L82 PathProgramCache]: Analyzing trace with hash -996963759, now seen corresponding path program 1 times [2018-10-23 22:41:41,056 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:41,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:41,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:41,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:41,057 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:41,318 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:41:41,498 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:41:41,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:41:41,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:41:41,499 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:41:41,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:41:41,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:41:41,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:41:41,500 INFO L87 Difference]: Start difference. First operand 7152 states and 9826 transitions. Second operand 6 states. [2018-10-23 22:41:45,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:41:45,130 INFO L93 Difference]: Finished difference Result 17771 states and 25546 transitions. [2018-10-23 22:41:45,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:41:45,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-10-23 22:41:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:41:45,194 INFO L225 Difference]: With dead ends: 17771 [2018-10-23 22:41:45,195 INFO L226 Difference]: Without dead ends: 10625 [2018-10-23 22:41:45,224 INFO L605 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 [2018-10-23 22:41:45,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10625 states. [2018-10-23 22:41:45,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10625 to 10585. [2018-10-23 22:41:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10585 states. [2018-10-23 22:41:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10585 states to 10585 states and 13819 transitions. [2018-10-23 22:41:45,493 INFO L78 Accepts]: Start accepts. Automaton has 10585 states and 13819 transitions. Word has length 114 [2018-10-23 22:41:45,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:41:45,494 INFO L481 AbstractCegarLoop]: Abstraction has 10585 states and 13819 transitions. [2018-10-23 22:41:45,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:41:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 10585 states and 13819 transitions. [2018-10-23 22:41:45,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-23 22:41:45,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:45,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:41:45,499 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:45,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:45,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1532470232, now seen corresponding path program 1 times [2018-10-23 22:41:45,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:45,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:45,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:45,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:45,501 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:45,752 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:41:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 22:41:45,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:41:45,804 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:41:45,805 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 122 with the following transitions: [2018-10-23 22:41:45,807 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [311], [313], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-23 22:41:45,872 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:41:45,872 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:41:47,786 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:41:56,471 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:41:56,473 INFO L272 AbstractInterpreter]: Visited 99 different actions 377 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:41:56,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:56,485 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:41:58,670 INFO L232 lantSequenceWeakener]: Weakened 56 states. On average, predicates are now at 79.25% of their original sizes. [2018-10-23 22:41:58,670 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:42:36,260 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:42:36,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:42:36,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [4] total 20 [2018-10-23 22:42:36,262 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:42:36,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-23 22:42:36,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-23 22:42:36,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-10-23 22:42:36,263 INFO L87 Difference]: Start difference. First operand 10585 states and 13819 transitions. Second operand 18 states. Received shutdown request... [2018-10-23 22:44:58,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 22:44:58,820 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:44:58,825 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:44:58,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:44:58 BoogieIcfgContainer [2018-10-23 22:44:58,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:44:58,826 INFO L168 Benchmark]: Toolchain (without parser) took 236285.54 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -695.3 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-23 22:44:58,827 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. [2018-10-23 22:44:58,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1115.30 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-23 22:44:58,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 318.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -849.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:44:58,829 INFO L168 Benchmark]: Boogie Preprocessor took 171.49 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:44:58,830 INFO L168 Benchmark]: RCFGBuilder took 6299.44 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: 250.0 MB). Peak memory consumption was 250.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:44:58,831 INFO L168 Benchmark]: TraceAbstraction took 228376.55 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -194.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-23 22:44:58,836 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 1115.30 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 318.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -849.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 171.49 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6299.44 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: 250.0 MB). Peak memory consumption was 250.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228376.55 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -194.2 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: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was constructing difference of abstraction (10585states) and FLOYD_HOARE automaton (currently 21 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (3560 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 228.2s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 174.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 682 SDtfs, 11796 SDslu, 815 SDs, 0 SdLazy, 15744 SolverSat, 3389 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 66.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 187 GetRequests, 59 SyntacticMatches, 64 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 43.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10585occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.992300724637681 AbsIntWeakeningRatio, 0.16666666666666666 AbsIntAvgWeakeningVarsNumRemoved, 36.391666666666666 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 530 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 674 NumberOfCodeBlocks, 674 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 667 ConstructedInterpolants, 0 QuantifiedInterpolants, 294197 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 114/132 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown