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/Problem14_label32_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:35:25,971 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:35:25,973 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:35:25,990 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:35:25,990 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:35:25,992 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:35:25,993 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:35:25,995 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:35:25,998 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:35:25,999 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:35:26,000 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:35:26,000 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:35:26,003 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:35:26,004 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:35:26,005 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:35:26,008 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:35:26,009 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:35:26,018 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:35:26,021 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:35:26,025 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:35:26,026 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:35:26,031 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:35:26,035 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:35:26,047 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 01:35:26,061 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:35:26,062 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:35:26,063 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:35:26,063 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:35:26,063 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:35:26,063 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:35:26,063 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:35:26,064 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:35:26,064 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:35:26,064 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:35:26,064 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:35:26,064 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:35:26,065 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:35:26,065 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:35:26,065 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:35:26,066 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:35:26,068 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:35:26,068 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:35:26,068 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:35:26,068 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:35:26,069 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:35:26,069 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:35:26,069 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:35:26,069 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:35:26,069 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:35:26,070 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:35:26,070 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:35:26,070 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:35:26,070 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:35:26,070 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:35:26,070 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:35:26,071 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:35:26,071 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:35:26,072 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:35:26,117 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:35:26,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:35:26,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:35:26,136 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:35:26,136 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:35:26,137 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label32_true-unreach-call_false-termination.c [2018-10-24 01:35:26,198 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f991b2470/eb7cb3f34da045e59625803ba4114a5f/FLAGa5a86648c [2018-10-24 01:35:26,816 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:35:26,817 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label32_true-unreach-call_false-termination.c [2018-10-24 01:35:26,845 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f991b2470/eb7cb3f34da045e59625803ba4114a5f/FLAGa5a86648c [2018-10-24 01:35:26,860 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f991b2470/eb7cb3f34da045e59625803ba4114a5f [2018-10-24 01:35:26,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:35:26,874 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:35:26,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:35:26,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:35:26,880 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:35:26,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:35:26" (1/1) ... [2018-10-24 01:35:26,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0ce8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:26, skipping insertion in model container [2018-10-24 01:35:26,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:35:26" (1/1) ... [2018-10-24 01:35:26,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:35:26,961 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:35:27,460 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:35:27,466 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:35:27,655 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:35:27,676 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:35:27,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:27 WrapperNode [2018-10-24 01:35:27,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:35:27,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:35:27,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:35:27,678 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:35:27,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:27" (1/1) ... [2018-10-24 01:35:27,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:27" (1/1) ... [2018-10-24 01:35:27,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:35:27,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:35:27,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:35:27,916 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:35:27,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:27" (1/1) ... [2018-10-24 01:35:27,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:27" (1/1) ... [2018-10-24 01:35:27,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:27" (1/1) ... [2018-10-24 01:35:27,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:27" (1/1) ... [2018-10-24 01:35:27,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:27" (1/1) ... [2018-10-24 01:35:27,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:27" (1/1) ... [2018-10-24 01:35:27,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:27" (1/1) ... [2018-10-24 01:35:28,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:35:28,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:35:28,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:35:28,011 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:35:28,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:27" (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 01:35:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:35:28,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:35:28,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:35:28,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:35:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:35:28,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:35:28,098 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:35:28,098 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:35:31,719 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:35:31,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:35:31 BoogieIcfgContainer [2018-10-24 01:35:31,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:35:31,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:35:31,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:35:31,724 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:35:31,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:35:26" (1/3) ... [2018-10-24 01:35:31,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc0eeaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:35:31, skipping insertion in model container [2018-10-24 01:35:31,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:27" (2/3) ... [2018-10-24 01:35:31,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc0eeaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:35:31, skipping insertion in model container [2018-10-24 01:35:31,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:35:31" (3/3) ... [2018-10-24 01:35:31,728 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label32_true-unreach-call_false-termination.c [2018-10-24 01:35:31,736 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:35:31,745 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:35:31,763 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:35:31,798 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:35:31,798 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:35:31,798 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:35:31,799 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:35:31,799 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:35:31,799 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:35:31,799 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:35:31,799 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:35:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 01:35:31,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-24 01:35:31,835 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:35:31,836 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] [2018-10-24 01:35:31,839 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:35:31,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:35:31,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1019361724, now seen corresponding path program 1 times [2018-10-24 01:35:31,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:35:31,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:35:31,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:35:31,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:35:31,899 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:35:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:35:32,366 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 01:35:32,386 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 01:35:32,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:35:32,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:35:32,389 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:35:32,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:35:32,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:35:32,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:35:32,417 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-24 01:35:35,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:35:35,535 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-10-24 01:35:35,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:35:35,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-10-24 01:35:35,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:35:35,564 INFO L225 Difference]: With dead ends: 894 [2018-10-24 01:35:35,564 INFO L226 Difference]: Without dead ends: 633 [2018-10-24 01:35:35,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:35:35,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-24 01:35:35,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-10-24 01:35:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-10-24 01:35:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-10-24 01:35:35,672 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 62 [2018-10-24 01:35:35,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:35:35,673 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-10-24 01:35:35,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:35:35,673 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-10-24 01:35:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-24 01:35:35,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:35:35,686 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:35:35,687 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:35:35,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:35:35,687 INFO L82 PathProgramCache]: Analyzing trace with hash 585274651, now seen corresponding path program 1 times [2018-10-24 01:35:35,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:35:35,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:35:35,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:35:35,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:35:35,689 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:35:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:35:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:35:36,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:35:36,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:35:36,111 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:35:36,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:35:36,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:35:36,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:35:36,114 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-10-24 01:35:39,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:35:39,583 INFO L93 Difference]: Finished difference Result 2170 states and 3490 transitions. [2018-10-24 01:35:39,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:35:39,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2018-10-24 01:35:39,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:35:39,597 INFO L225 Difference]: With dead ends: 2170 [2018-10-24 01:35:39,597 INFO L226 Difference]: Without dead ends: 1543 [2018-10-24 01:35:39,603 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 01:35:39,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2018-10-24 01:35:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2018-10-24 01:35:39,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2018-10-24 01:35:39,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2271 transitions. [2018-10-24 01:35:39,693 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2271 transitions. Word has length 175 [2018-10-24 01:35:39,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:35:39,694 INFO L481 AbstractCegarLoop]: Abstraction has 1543 states and 2271 transitions. [2018-10-24 01:35:39,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:35:39,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2271 transitions. [2018-10-24 01:35:39,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-24 01:35:39,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:35:39,713 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 01:35:39,713 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:35:39,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:35:39,714 INFO L82 PathProgramCache]: Analyzing trace with hash -2093465648, now seen corresponding path program 1 times [2018-10-24 01:35:39,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:35:39,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:35:39,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:35:39,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:35:39,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:35:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:35:40,653 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 01:35:40,913 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 01:35:41,220 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 132 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:35:41,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:35:41,220 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:35:41,221 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-10-24 01:35:41,224 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 01:35:41,301 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:35:41,301 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:35:44,341 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:35:45,661 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:35:45,663 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:35:45,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:35:45,707 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:35:48,499 INFO L232 lantSequenceWeakener]: Weakened 242 states. On average, predicates are now at 78.18% of their original sizes. [2018-10-24 01:35:48,500 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:35:48,989 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:35:48,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:35:48,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2018-10-24 01:35:48,991 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:35:48,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:35:48,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:35:48,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:35:48,993 INFO L87 Difference]: Start difference. First operand 1543 states and 2271 transitions. Second operand 7 states. [2018-10-24 01:36:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:36:16,689 INFO L93 Difference]: Finished difference Result 3265 states and 4776 transitions. [2018-10-24 01:36:16,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:36:16,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2018-10-24 01:36:16,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:36:16,699 INFO L225 Difference]: With dead ends: 3265 [2018-10-24 01:36:16,700 INFO L226 Difference]: Without dead ends: 1728 [2018-10-24 01:36:16,705 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 250 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:36:16,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2018-10-24 01:36:16,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2018-10-24 01:36:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1726 states. [2018-10-24 01:36:16,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2461 transitions. [2018-10-24 01:36:16,755 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2461 transitions. Word has length 250 [2018-10-24 01:36:16,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:36:16,755 INFO L481 AbstractCegarLoop]: Abstraction has 1726 states and 2461 transitions. [2018-10-24 01:36:16,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:36:16,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2461 transitions. [2018-10-24 01:36:16,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-10-24 01:36:16,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:36:16,766 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-24 01:36:16,766 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:36:16,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:36:16,767 INFO L82 PathProgramCache]: Analyzing trace with hash -2144924513, now seen corresponding path program 1 times [2018-10-24 01:36:16,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:36:16,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:16,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:36:16,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:36:16,768 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:36:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:36:17,355 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 01:36:17,551 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 01:36:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 253 proven. 142 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:36:18,173 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:36:18,173 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:36:18,173 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 336 with the following transitions: [2018-10-24 01:36:18,174 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 01:36:18,180 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:36:18,180 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:36:20,692 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:36:24,104 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:36:24,105 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:36:24,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:36:24,107 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:36:28,061 INFO L232 lantSequenceWeakener]: Weakened 78 states. On average, predicates are now at 78.44% of their original sizes. [2018-10-24 01:36:28,062 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:37:16,418 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:37:16,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:37:16,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [12] total 27 [2018-10-24 01:37:16,418 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:37:16,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 01:37:16,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 01:37:16,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-10-24 01:37:16,420 INFO L87 Difference]: Start difference. First operand 1726 states and 2461 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 01:39:24,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 01:39:24,471 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:39:24,477 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:39:24,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:39:24 BoogieIcfgContainer [2018-10-24 01:39:24,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:39:24,478 INFO L168 Benchmark]: Toolchain (without parser) took 237605.33 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 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 306.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:39:24,480 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:39:24,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.14 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:39:24,481 INFO L168 Benchmark]: Boogie Procedure Inliner took 237.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:39:24,482 INFO L168 Benchmark]: Boogie Preprocessor took 95.24 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:39:24,483 INFO L168 Benchmark]: RCFGBuilder took 3709.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.8 MB). Peak memory consumption was 132.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:39:24,484 INFO L168 Benchmark]: TraceAbstraction took 232756.72 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 205.5 MB. Max. memory is 7.1 GB. [2018-10-24 01:39:24,490 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 801.14 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 237.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.24 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3709.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.8 MB). Peak memory consumption was 132.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232756.72 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 205.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 169]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 169). Cancelled while BasicCegarLoop was constructing difference of abstraction (1726states) and FLOYD_HOARE automaton (currently 18 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (1928 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 232.6s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 162.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 680 SDtfs, 3872 SDslu, 574 SDs, 0 SdLazy, 4621 SolverSat, 864 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 601 GetRequests, 510 SyntacticMatches, 60 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 49.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1726occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995808163671166 AbsIntWeakeningRatio, 0.09948542024013722 AbsIntAvgWeakeningVarsNumRemoved, 584.0840480274443 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 822 NumberOfCodeBlocks, 822 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 818 ConstructedInterpolants, 0 QuantifiedInterpolants, 2035572 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 445/640 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown