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/Problem02_label45_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:19:21,083 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:19:21,088 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:19:21,099 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:19:21,099 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:19:21,101 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:19:21,102 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:19:21,104 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:19:21,105 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:19:21,106 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:19:21,107 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:19:21,107 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:19:21,108 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:19:21,109 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:19:21,110 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:19:21,111 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:19:21,112 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:19:21,114 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:19:21,116 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:19:21,121 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:19:21,123 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:19:21,124 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:19:21,130 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:19:21,145 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 17:19:21,176 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:19:21,177 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:19:21,178 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:19:21,178 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 17:19:21,179 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 17:19:21,179 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 17:19:21,179 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 17:19:21,179 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 17:19:21,180 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 17:19:21,180 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 17:19:21,180 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 17:19:21,180 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 17:19:21,181 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:19:21,182 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:19:21,182 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:19:21,182 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:19:21,182 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:19:21,182 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:19:21,184 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:19:21,185 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:19:21,185 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:19:21,185 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:19:21,185 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:19:21,185 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:19:21,186 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:19:21,186 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:19:21,186 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:19:21,187 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:19:21,187 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 17:19:21,187 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:19:21,187 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:19:21,187 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:19:21,188 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:19:21,188 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 17:19:21,262 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:19:21,278 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:19:21,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:19:21,283 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:19:21,284 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:19:21,285 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label45_false-unreach-call_false-termination.c [2018-10-24 17:19:21,345 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d168b765e/40ad05093c38415bb888e0fff1b90793/FLAG8279e117d [2018-10-24 17:19:21,852 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:19:21,853 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label45_false-unreach-call_false-termination.c [2018-10-24 17:19:21,872 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d168b765e/40ad05093c38415bb888e0fff1b90793/FLAG8279e117d [2018-10-24 17:19:21,895 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d168b765e/40ad05093c38415bb888e0fff1b90793 [2018-10-24 17:19:21,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:19:21,907 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:19:21,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:19:21,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:19:21,911 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:19:21,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:19:21" (1/1) ... [2018-10-24 17:19:21,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ae6b03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:21, skipping insertion in model container [2018-10-24 17:19:21,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:19:21" (1/1) ... [2018-10-24 17:19:21,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:19:22,000 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:19:22,508 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:19:22,513 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:19:22,610 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:19:22,629 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:19:22,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:22 WrapperNode [2018-10-24 17:19:22,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:19:22,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:19:22,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:19:22,631 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:19:22,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:22" (1/1) ... [2018-10-24 17:19:22,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:22" (1/1) ... [2018-10-24 17:19:22,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:19:22,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:19:22,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:19:22,828 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:19:22,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:22" (1/1) ... [2018-10-24 17:19:22,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:22" (1/1) ... [2018-10-24 17:19:22,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:22" (1/1) ... [2018-10-24 17:19:22,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:22" (1/1) ... [2018-10-24 17:19:22,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:22" (1/1) ... [2018-10-24 17:19:22,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:22" (1/1) ... [2018-10-24 17:19:22,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:22" (1/1) ... [2018-10-24 17:19:22,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:19:22,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:19:22,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:19:22,916 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:19:22,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:22" (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 17:19:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 17:19:22,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 17:19:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 17:19:22,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 17:19:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:19:22,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:19:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 17:19:22,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 17:19:26,098 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:19:26,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:19:26 BoogieIcfgContainer [2018-10-24 17:19:26,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:19:26,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:19:26,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:19:26,104 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:19:26,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:19:21" (1/3) ... [2018-10-24 17:19:26,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a2d06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:19:26, skipping insertion in model container [2018-10-24 17:19:26,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:19:22" (2/3) ... [2018-10-24 17:19:26,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a2d06b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:19:26, skipping insertion in model container [2018-10-24 17:19:26,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:19:26" (3/3) ... [2018-10-24 17:19:26,108 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label45_false-unreach-call_false-termination.c [2018-10-24 17:19:26,119 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:19:26,128 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:19:26,147 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:19:26,184 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:19:26,184 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:19:26,184 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:19:26,184 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:19:26,184 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:19:26,185 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:19:26,185 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:19:26,185 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:19:26,211 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 17:19:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-24 17:19:26,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:26,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:19:26,226 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:26,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:26,232 INFO L82 PathProgramCache]: Analyzing trace with hash 865882407, now seen corresponding path program 1 times [2018-10-24 17:19:26,235 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:26,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:26,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:26,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:26,289 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:26,883 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 17:19:27,050 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 17:19:27,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:27,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:19:27,053 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:27,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:19:27,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:19:27,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:19:27,081 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 17:19:28,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:28,807 INFO L93 Difference]: Finished difference Result 621 states and 1059 transitions. [2018-10-24 17:19:28,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:19:28,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2018-10-24 17:19:28,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:28,831 INFO L225 Difference]: With dead ends: 621 [2018-10-24 17:19:28,831 INFO L226 Difference]: Without dead ends: 382 [2018-10-24 17:19:28,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:19:28,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-24 17:19:28,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-24 17:19:28,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-24 17:19:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 608 transitions. [2018-10-24 17:19:28,912 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 608 transitions. Word has length 89 [2018-10-24 17:19:28,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:28,913 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 608 transitions. [2018-10-24 17:19:28,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:19:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 608 transitions. [2018-10-24 17:19:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 17:19:28,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:28,920 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:19:28,921 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:28,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:28,924 INFO L82 PathProgramCache]: Analyzing trace with hash 277918394, now seen corresponding path program 1 times [2018-10-24 17:19:28,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:28,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:28,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:28,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:28,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:29,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:29,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:19:29,162 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:29,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:19:29,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:19:29,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:19:29,166 INFO L87 Difference]: Start difference. First operand 382 states and 608 transitions. Second operand 4 states. [2018-10-24 17:19:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:31,126 INFO L93 Difference]: Finished difference Result 1344 states and 2270 transitions. [2018-10-24 17:19:31,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:19:31,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2018-10-24 17:19:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:31,139 INFO L225 Difference]: With dead ends: 1344 [2018-10-24 17:19:31,139 INFO L226 Difference]: Without dead ends: 968 [2018-10-24 17:19:31,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:19:31,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-10-24 17:19:31,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 965. [2018-10-24 17:19:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2018-10-24 17:19:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1460 transitions. [2018-10-24 17:19:31,220 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1460 transitions. Word has length 98 [2018-10-24 17:19:31,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:31,220 INFO L481 AbstractCegarLoop]: Abstraction has 965 states and 1460 transitions. [2018-10-24 17:19:31,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:19:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1460 transitions. [2018-10-24 17:19:31,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-24 17:19:31,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:31,229 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 17:19:31,229 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:31,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:31,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1198681373, now seen corresponding path program 1 times [2018-10-24 17:19:31,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:31,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:31,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:31,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:31,232 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:31,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:31,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:19:31,398 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:31,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:19:31,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:19:31,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:19:31,400 INFO L87 Difference]: Start difference. First operand 965 states and 1460 transitions. Second operand 6 states. [2018-10-24 17:19:35,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:35,604 INFO L93 Difference]: Finished difference Result 2359 states and 3695 transitions. [2018-10-24 17:19:35,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:19:35,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-10-24 17:19:35,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:35,624 INFO L225 Difference]: With dead ends: 2359 [2018-10-24 17:19:35,624 INFO L226 Difference]: Without dead ends: 1400 [2018-10-24 17:19:35,633 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 [2018-10-24 17:19:35,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2018-10-24 17:19:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1376. [2018-10-24 17:19:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2018-10-24 17:19:35,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 2027 transitions. [2018-10-24 17:19:35,708 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 2027 transitions. Word has length 112 [2018-10-24 17:19:35,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:35,710 INFO L481 AbstractCegarLoop]: Abstraction has 1376 states and 2027 transitions. [2018-10-24 17:19:35,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:19:35,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 2027 transitions. [2018-10-24 17:19:35,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 17:19:35,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:35,715 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] [2018-10-24 17:19:35,716 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:35,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:35,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1692636065, now seen corresponding path program 1 times [2018-10-24 17:19:35,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:35,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:35,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:35,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:35,719 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:36,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:36,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 17:19:36,033 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:36,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:19:36,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:19:36,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:19:36,035 INFO L87 Difference]: Start difference. First operand 1376 states and 2027 transitions. Second operand 7 states. [2018-10-24 17:19:38,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:38,755 INFO L93 Difference]: Finished difference Result 3616 states and 5575 transitions. [2018-10-24 17:19:38,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 17:19:38,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2018-10-24 17:19:38,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:38,772 INFO L225 Difference]: With dead ends: 3616 [2018-10-24 17:19:38,772 INFO L226 Difference]: Without dead ends: 2246 [2018-10-24 17:19:38,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-10-24 17:19:38,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2018-10-24 17:19:38,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2174. [2018-10-24 17:19:38,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2174 states. [2018-10-24 17:19:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 2874 transitions. [2018-10-24 17:19:38,862 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 2874 transitions. Word has length 114 [2018-10-24 17:19:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:38,862 INFO L481 AbstractCegarLoop]: Abstraction has 2174 states and 2874 transitions. [2018-10-24 17:19:38,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:19:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 2874 transitions. [2018-10-24 17:19:38,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 17:19:38,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:38,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:19:38,868 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:38,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:38,868 INFO L82 PathProgramCache]: Analyzing trace with hash -387464135, now seen corresponding path program 1 times [2018-10-24 17:19:38,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:38,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:38,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:38,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:38,870 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:39,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:19:39,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:19:39,089 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:19:39,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:19:39,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:19:39,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:19:39,090 INFO L87 Difference]: Start difference. First operand 2174 states and 2874 transitions. Second operand 6 states. [2018-10-24 17:19:41,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:19:41,617 INFO L93 Difference]: Finished difference Result 6259 states and 8687 transitions. [2018-10-24 17:19:41,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:19:41,621 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-24 17:19:41,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:19:41,652 INFO L225 Difference]: With dead ends: 6259 [2018-10-24 17:19:41,653 INFO L226 Difference]: Without dead ends: 4091 [2018-10-24 17:19:41,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 17:19:41,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states. [2018-10-24 17:19:41,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 3972. [2018-10-24 17:19:41,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3972 states. [2018-10-24 17:19:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 4946 transitions. [2018-10-24 17:19:41,808 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 4946 transitions. Word has length 121 [2018-10-24 17:19:41,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:19:41,808 INFO L481 AbstractCegarLoop]: Abstraction has 3972 states and 4946 transitions. [2018-10-24 17:19:41,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:19:41,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 4946 transitions. [2018-10-24 17:19:41,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-24 17:19:41,815 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:19:41,815 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:19:41,815 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:19:41,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:19:41,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1209015306, now seen corresponding path program 1 times [2018-10-24 17:19:41,816 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:19:41,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:41,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:19:41,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:19:41,817 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:19:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:19:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:19:42,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:19:42,498 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:19:42,499 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 127 with the following transitions: [2018-10-24 17:19:42,501 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [383], [385], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 17:19:42,574 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:19:42,575 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:20:46,661 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:20:46,663 INFO L272 AbstractInterpreter]: Visited 93 different actions 360 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-24 17:20:46,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:20:46,674 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 17:20:51,256 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 91.67% of their original sizes. [2018-10-24 17:20:51,257 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 17:23:47,400 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:23:47,406 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:23:47,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:23:47 BoogieIcfgContainer [2018-10-24 17:23:47,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:23:47,407 INFO L168 Benchmark]: Toolchain (without parser) took 265500.96 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -116.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 17:23:47,409 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:23:47,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:23:47,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 196.46 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 717.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -781.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2018-10-24 17:23:47,411 INFO L168 Benchmark]: Boogie Preprocessor took 87.71 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:23:47,412 INFO L168 Benchmark]: RCFGBuilder took 3184.14 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 108.6 MB). Peak memory consumption was 108.6 MB. Max. memory is 7.1 GB. [2018-10-24 17:23:47,413 INFO L168 Benchmark]: TraceAbstraction took 261306.30 ms. Allocated memory was 2.2 GB in the beginning and 3.5 GB in the end (delta: 1.3 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 525.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 17:23:47,420 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 721.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 196.46 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 717.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -781.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.71 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3184.14 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 108.6 MB). Peak memory consumption was 108.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 261306.30 ms. Allocated memory was 2.2 GB in the beginning and 3.5 GB in the end (delta: 1.3 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 525.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 418]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 418). Cancelled while BasicCegarLoop was analyzing trace of length 127 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 261.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 13.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 631 SDtfs, 3295 SDslu, 695 SDs, 0 SdLazy, 4444 SolverSat, 1136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3972occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 64.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9925917496443809 AbsIntWeakeningRatio, 0.264 AbsIntAvgWeakeningVarsNumRemoved, 1501.752 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 218 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 534 NumberOfCodeBlocks, 534 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 529 ConstructedInterpolants, 0 QuantifiedInterpolants, 176714 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 77/77 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown