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/Problem13_label04_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:17:27,059 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:17:27,063 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:17:27,083 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:17:27,084 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:17:27,085 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:17:27,086 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:17:27,090 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:17:27,093 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:17:27,094 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:17:27,095 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:17:27,095 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:17:27,096 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:17:27,097 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:17:27,098 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:17:27,099 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:17:27,100 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:17:27,101 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:17:27,103 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:17:27,105 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:17:27,106 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:17:27,108 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:17:27,110 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:17:27,119 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 22:17:27,137 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:17:27,137 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:17:27,138 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:17:27,138 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:17:27,138 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:17:27,139 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:17:27,139 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:17:27,139 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:17:27,139 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:17:27,139 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:17:27,140 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:17:27,140 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:17:27,140 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:17:27,141 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:17:27,141 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:17:27,141 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:17:27,141 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:17:27,141 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:17:27,142 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:17:27,142 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:17:27,142 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:17:27,142 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:17:27,142 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:17:27,143 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:17:27,143 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:17:27,143 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:17:27,143 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:17:27,143 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:17:27,143 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:17:27,144 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:17:27,144 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:17:27,144 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:17:27,144 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:17:27,144 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:17:27,190 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:17:27,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:17:27,210 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:17:27,212 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:17:27,212 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:17:27,213 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label04_false-unreach-call.c [2018-10-23 22:17:27,292 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a9280277/c6d1cb67b0b34d3790d2606cc83f3ce5/FLAGeac349a05 [2018-10-23 22:17:28,124 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:17:28,126 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label04_false-unreach-call.c [2018-10-23 22:17:28,175 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a9280277/c6d1cb67b0b34d3790d2606cc83f3ce5/FLAGeac349a05 [2018-10-23 22:17:28,195 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a9280277/c6d1cb67b0b34d3790d2606cc83f3ce5 [2018-10-23 22:17:28,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:17:28,209 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:17:28,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:17:28,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:17:28,214 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:17:28,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:17:28" (1/1) ... [2018-10-23 22:17:28,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206c1d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:17:28, skipping insertion in model container [2018-10-23 22:17:28,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:17:28" (1/1) ... [2018-10-23 22:17:28,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:17:28,413 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:17:29,849 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:17:29,855 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:17:30,625 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:17:30,660 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:17:30,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:17:30 WrapperNode [2018-10-23 22:17:30,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:17:30,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:17:30,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:17:30,662 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:17:30,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:17:30" (1/1) ... [2018-10-23 22:17:30,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:17:30" (1/1) ... [2018-10-23 22:17:31,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:17:31,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:17:31,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:17:31,277 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:17:31,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:17:30" (1/1) ... [2018-10-23 22:17:31,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:17:30" (1/1) ... [2018-10-23 22:17:31,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:17:30" (1/1) ... [2018-10-23 22:17:31,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:17:30" (1/1) ... [2018-10-23 22:17:31,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:17:30" (1/1) ... [2018-10-23 22:17:31,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:17:30" (1/1) ... [2018-10-23 22:17:31,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:17:30" (1/1) ... [2018-10-23 22:17:31,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:17:31,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:17:31,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:17:31,682 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:17:31,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:17:30" (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 22:17:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:17:31,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:17:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-23 22:17:31,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-23 22:17:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:17:31,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:17:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:17:31,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:17:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:17:31,763 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:17:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:17:31,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:17:31,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:17:31,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:17:42,724 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:17:42,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:17:42 BoogieIcfgContainer [2018-10-23 22:17:42,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:17:42,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:17:42,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:17:42,730 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:17:42,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:17:28" (1/3) ... [2018-10-23 22:17:42,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9d142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:17:42, skipping insertion in model container [2018-10-23 22:17:42,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:17:30" (2/3) ... [2018-10-23 22:17:42,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9d142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:17:42, skipping insertion in model container [2018-10-23 22:17:42,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:17:42" (3/3) ... [2018-10-23 22:17:42,734 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label04_false-unreach-call.c [2018-10-23 22:17:42,745 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:17:42,756 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:17:42,774 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:17:42,823 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:17:42,823 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:17:42,823 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:17:42,823 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:17:42,824 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:17:42,824 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:17:42,824 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:17:42,824 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:17:42,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-23 22:17:42,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-23 22:17:42,878 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:17:42,880 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] [2018-10-23 22:17:42,882 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:17:42,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:17:42,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1342939469, now seen corresponding path program 1 times [2018-10-23 22:17:42,892 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:17:42,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:17:42,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:17:42,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:17:42,946 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:17:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:17:43,346 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 22:17:43,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:17:43,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:17:43,350 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:17:43,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:17:43,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:17:43,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:17:43,376 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-23 22:17:52,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:17:52,368 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-23 22:17:52,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:17:52,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-10-23 22:17:52,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:17:52,407 INFO L225 Difference]: With dead ends: 3097 [2018-10-23 22:17:52,407 INFO L226 Difference]: Without dead ends: 1975 [2018-10-23 22:17:52,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:17:52,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-23 22:17:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-23 22:17:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-23 22:17:52,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-23 22:17:52,583 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 23 [2018-10-23 22:17:52,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:17:52,584 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-23 22:17:52,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:17:52,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-23 22:17:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-23 22:17:52,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:17:52,590 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:17:52,590 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:17:52,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:17:52,591 INFO L82 PathProgramCache]: Analyzing trace with hash 555017698, now seen corresponding path program 1 times [2018-10-23 22:17:52,591 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:17:52,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:17:52,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:17:52,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:17:52,593 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:17:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:17:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:17:52,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:17:52,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:17:52,898 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:17:52,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:17:52,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:17:52,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:17:52,901 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-23 22:18:12,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:18:12,311 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-10-23 22:18:12,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:18:12,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-10-23 22:18:12,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:18:12,344 INFO L225 Difference]: With dead ends: 5736 [2018-10-23 22:18:12,345 INFO L226 Difference]: Without dead ends: 3768 [2018-10-23 22:18:12,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 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 22:18:12,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-10-23 22:18:12,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-10-23 22:18:12,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-10-23 22:18:12,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-10-23 22:18:12,475 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 99 [2018-10-23 22:18:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:18:12,476 INFO L481 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-10-23 22:18:12,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:18:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-10-23 22:18:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-23 22:18:12,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:18:12,481 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:18:12,482 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:18:12,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:18:12,482 INFO L82 PathProgramCache]: Analyzing trace with hash 684637502, now seen corresponding path program 1 times [2018-10-23 22:18:12,482 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:18:12,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:18:12,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:18:12,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:18:12,484 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:18:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:18:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:18:12,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:18:12,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:18:12,663 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:18:12,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:18:12,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:18:12,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:18:12,664 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-10-23 22:18:42,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:18:42,589 INFO L93 Difference]: Finished difference Result 13667 states and 21761 transitions. [2018-10-23 22:18:42,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:18:42,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2018-10-23 22:18:42,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:18:42,648 INFO L225 Difference]: With dead ends: 13667 [2018-10-23 22:18:42,649 INFO L226 Difference]: Without dead ends: 9987 [2018-10-23 22:18:42,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:18:42,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2018-10-23 22:18:42,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 9795. [2018-10-23 22:18:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9795 states. [2018-10-23 22:18:42,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 14500 transitions. [2018-10-23 22:18:42,970 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 14500 transitions. Word has length 113 [2018-10-23 22:18:42,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:18:42,970 INFO L481 AbstractCegarLoop]: Abstraction has 9795 states and 14500 transitions. [2018-10-23 22:18:42,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:18:42,971 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 14500 transitions. [2018-10-23 22:18:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-23 22:18:42,986 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:18:42,986 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:18:42,987 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:18:42,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:18:42,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1575492386, now seen corresponding path program 1 times [2018-10-23 22:18:42,987 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:18:42,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:18:42,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:18:42,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:18:42,989 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:18:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:18:43,335 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:18:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:18:43,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:18:43,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:18:43,433 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:18:43,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:18:43,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:18:43,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:18:43,434 INFO L87 Difference]: Start difference. First operand 9795 states and 14500 transitions. Second operand 6 states. [2018-10-23 22:18:57,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:18:57,008 INFO L93 Difference]: Finished difference Result 34191 states and 53804 transitions. [2018-10-23 22:18:57,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:18:57,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-23 22:18:57,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:18:57,138 INFO L225 Difference]: With dead ends: 34191 [2018-10-23 22:18:57,138 INFO L226 Difference]: Without dead ends: 24402 [2018-10-23 22:18:57,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:18:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24402 states. [2018-10-23 22:18:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24402 to 24169. [2018-10-23 22:18:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24169 states. [2018-10-23 22:18:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24169 states to 24169 states and 34071 transitions. [2018-10-23 22:18:57,795 INFO L78 Accepts]: Start accepts. Automaton has 24169 states and 34071 transitions. Word has length 131 [2018-10-23 22:18:57,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:18:57,796 INFO L481 AbstractCegarLoop]: Abstraction has 24169 states and 34071 transitions. [2018-10-23 22:18:57,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:18:57,796 INFO L276 IsEmpty]: Start isEmpty. Operand 24169 states and 34071 transitions. [2018-10-23 22:18:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-23 22:18:57,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:18:57,800 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:18:57,801 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:18:57,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:18:57,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1082707378, now seen corresponding path program 1 times [2018-10-23 22:18:57,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:18:57,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:18:57,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:18:57,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:18:57,803 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:18:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:18:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:18:58,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:18:58,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:18:58,039 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:18:58,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:18:58,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:18:58,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:18:58,040 INFO L87 Difference]: Start difference. First operand 24169 states and 34071 transitions. Second operand 4 states. [2018-10-23 22:19:10,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:19:10,728 INFO L93 Difference]: Finished difference Result 66689 states and 100103 transitions. [2018-10-23 22:19:10,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:19:10,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-10-23 22:19:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:19:10,887 INFO L225 Difference]: With dead ends: 66689 [2018-10-23 22:19:10,887 INFO L226 Difference]: Without dead ends: 42526 [2018-10-23 22:19:10,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:19:10,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42526 states. [2018-10-23 22:19:11,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42526 to 42464. [2018-10-23 22:19:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42464 states. [2018-10-23 22:19:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42464 states to 42464 states and 59965 transitions. [2018-10-23 22:19:11,865 INFO L78 Accepts]: Start accepts. Automaton has 42464 states and 59965 transitions. Word has length 139 [2018-10-23 22:19:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:19:11,866 INFO L481 AbstractCegarLoop]: Abstraction has 42464 states and 59965 transitions. [2018-10-23 22:19:11,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:19:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 42464 states and 59965 transitions. [2018-10-23 22:19:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-23 22:19:11,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:19:11,888 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 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 22:19:11,889 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:19:11,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:19:11,889 INFO L82 PathProgramCache]: Analyzing trace with hash 859998952, now seen corresponding path program 1 times [2018-10-23 22:19:11,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:19:11,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:19:11,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:19:11,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:19:11,891 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:19:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:19:12,460 WARN L179 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-10-23 22:19:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 48 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-23 22:19:12,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:19:12,646 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:19:12,647 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-10-23 22:19:12,649 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2711], [2713], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3159], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-23 22:19:12,726 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:19:12,726 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:19:16,783 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:19:21,853 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:19:21,855 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-23 22:19:21,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:19:21,899 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:19:27,550 INFO L232 lantSequenceWeakener]: Weakened 244 states. On average, predicates are now at 71.12% of their original sizes. [2018-10-23 22:19:27,552 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:19:29,129 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:19:29,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:19:29,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-23 22:19:29,130 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:19:29,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 22:19:29,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 22:19:29,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-23 22:19:29,131 INFO L87 Difference]: Start difference. First operand 42464 states and 59965 transitions. Second operand 10 states. Received shutdown request... [2018-10-23 22:21:13,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 22:21:13,264 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:21:13,270 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:21:13,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:21:13 BoogieIcfgContainer [2018-10-23 22:21:13,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:21:13,272 INFO L168 Benchmark]: Toolchain (without parser) took 225064.28 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 479.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:21:13,273 INFO L168 Benchmark]: CDTParser took 0.20 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 22:21:13,274 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2451.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:21:13,275 INFO L168 Benchmark]: Boogie Procedure Inliner took 614.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-23 22:21:13,276 INFO L168 Benchmark]: Boogie Preprocessor took 404.56 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:21:13,276 INFO L168 Benchmark]: RCFGBuilder took 11043.86 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 220.2 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -43.6 MB). Peak memory consumption was 678.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:21:13,277 INFO L168 Benchmark]: TraceAbstraction took 210544.81 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 275.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:21:13,283 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2451.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 614.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 404.56 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: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11043.86 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 220.2 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -43.6 MB). Peak memory consumption was 678.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210544.81 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 275.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 60). Cancelled while BasicCegarLoop was constructing difference of abstraction (42464states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (8468 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 210.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 189.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2812 SDtfs, 16377 SDslu, 2440 SDs, 0 SdLazy, 29132 SolverSat, 7667 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 147.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 311 GetRequests, 275 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42464occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9958290598290597 AbsIntWeakeningRatio, 0.12222222222222222 AbsIntAvgWeakeningVarsNumRemoved, 47.84814814814815 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 570 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 776 NumberOfCodeBlocks, 776 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 770 ConstructedInterpolants, 0 QuantifiedInterpolants, 550648 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 198/342 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown