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/Problem18_label19_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:58:01,852 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:58:01,854 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:58:01,868 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:58:01,868 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:58:01,870 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:58:01,871 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:58:01,873 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:58:01,874 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:58:01,875 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:58:01,876 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:58:01,876 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:58:01,879 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:58:01,880 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:58:01,881 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:58:01,884 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:58:01,886 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:58:01,891 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:58:01,899 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:58:01,901 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:58:01,906 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:58:01,907 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:58:01,910 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:58:01,919 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:58:01,919 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:58:01,920 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:58:01,922 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:58:01,922 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 18:58:01,951 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:58:01,952 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:58:01,953 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:58:01,953 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:58:01,954 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:58:01,954 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:58:01,954 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:58:01,954 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:58:01,954 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:58:01,955 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:58:01,955 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:58:01,955 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:58:01,956 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:58:01,956 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:58:01,956 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:58:01,956 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:58:01,957 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:58:01,957 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:58:01,957 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:58:01,957 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:58:01,957 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:58:01,958 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:58:01,958 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:58:01,958 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:58:01,958 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:58:01,958 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:58:01,959 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:58:01,959 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:58:01,960 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:58:01,960 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:58:01,960 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:58:01,960 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:58:01,961 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:58:01,961 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:58:02,027 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:58:02,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:58:02,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:58:02,049 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:58:02,050 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:58:02,051 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label19_false-unreach-call.c [2018-10-24 18:58:02,115 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0d38e6118/81cf1eeab87241fcae07f3c46209ca13/FLAG88ff14b68 [2018-10-24 18:58:02,827 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:58:02,829 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label19_false-unreach-call.c [2018-10-24 18:58:02,861 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0d38e6118/81cf1eeab87241fcae07f3c46209ca13/FLAG88ff14b68 [2018-10-24 18:58:02,884 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0d38e6118/81cf1eeab87241fcae07f3c46209ca13 [2018-10-24 18:58:02,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:58:02,901 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:58:02,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:58:02,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:58:02,909 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:58:02,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:58:02" (1/1) ... [2018-10-24 18:58:02,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:58:02, skipping insertion in model container [2018-10-24 18:58:02,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:58:02" (1/1) ... [2018-10-24 18:58:02,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:58:03,069 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:58:04,204 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:58:04,209 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:58:04,743 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:58:04,775 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:58:04,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:58:04 WrapperNode [2018-10-24 18:58:04,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:58:04,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:58:04,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:58:04,777 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:58:04,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:58:04" (1/1) ... [2018-10-24 18:58:04,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:58:04" (1/1) ... [2018-10-24 18:58:05,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:58:05,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:58:05,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:58:05,217 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:58:05,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:58:04" (1/1) ... [2018-10-24 18:58:05,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:58:04" (1/1) ... [2018-10-24 18:58:05,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:58:04" (1/1) ... [2018-10-24 18:58:05,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:58:04" (1/1) ... [2018-10-24 18:58:05,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:58:04" (1/1) ... [2018-10-24 18:58:05,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:58:04" (1/1) ... [2018-10-24 18:58:05,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:58:04" (1/1) ... [2018-10-24 18:58:05,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:58:05,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:58:05,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:58:05,483 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:58:05,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:58:04" (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 18:58:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:58:05,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:58:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:58:05,564 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:58:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:58:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:58:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:58:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:58:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:58:05,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:58:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:58:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:58:14,869 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:58:14,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:58:14 BoogieIcfgContainer [2018-10-24 18:58:14,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:58:14,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:58:14,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:58:14,881 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:58:14,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:58:02" (1/3) ... [2018-10-24 18:58:14,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97028d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:58:14, skipping insertion in model container [2018-10-24 18:58:14,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:58:04" (2/3) ... [2018-10-24 18:58:14,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97028d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:58:14, skipping insertion in model container [2018-10-24 18:58:14,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:58:14" (3/3) ... [2018-10-24 18:58:14,887 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label19_false-unreach-call.c [2018-10-24 18:58:14,899 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:58:14,914 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:58:14,934 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:58:14,996 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:58:14,996 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:58:14,996 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:58:14,996 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:58:14,997 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:58:14,997 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:58:14,997 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:58:14,997 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:58:15,049 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 18:58:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 18:58:15,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:15,056 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:58:15,058 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:15,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:15,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1323021204, now seen corresponding path program 1 times [2018-10-24 18:58:15,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:15,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:15,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:15,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:15,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:15,469 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:58:15,573 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 18:58:15,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:15,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:58:15,579 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:15,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:58:15,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:58:15,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:58:15,627 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 18:58:22,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:22,563 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 18:58:22,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:58:22,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-24 18:58:22,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:22,597 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 18:58:22,597 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 18:58:22,609 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 [2018-10-24 18:58:22,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 18:58:22,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 18:58:22,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 18:58:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-10-24 18:58:22,769 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 16 [2018-10-24 18:58:22,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:22,769 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-10-24 18:58:22,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:58:22,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-10-24 18:58:22,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-24 18:58:22,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:22,781 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:58:22,782 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:22,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:22,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1601004906, now seen corresponding path program 1 times [2018-10-24 18:58:22,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:22,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:22,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:22,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:22,784 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:58:23,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:23,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:58:23,059 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:23,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:58:23,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:58:23,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:58:23,063 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 5 states. [2018-10-24 18:58:31,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:31,374 INFO L93 Difference]: Finished difference Result 3698 states and 6787 transitions. [2018-10-24 18:58:31,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:58:31,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2018-10-24 18:58:31,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:31,394 INFO L225 Difference]: With dead ends: 3698 [2018-10-24 18:58:31,394 INFO L226 Difference]: Without dead ends: 2230 [2018-10-24 18:58:31,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:58:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2018-10-24 18:58:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2209. [2018-10-24 18:58:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2018-10-24 18:58:31,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3833 transitions. [2018-10-24 18:58:31,470 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3833 transitions. Word has length 88 [2018-10-24 18:58:31,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:31,471 INFO L481 AbstractCegarLoop]: Abstraction has 2209 states and 3833 transitions. [2018-10-24 18:58:31,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:58:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3833 transitions. [2018-10-24 18:58:31,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 18:58:31,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:31,476 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:58:31,477 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:31,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:31,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1410577369, now seen corresponding path program 1 times [2018-10-24 18:58:31,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:31,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:31,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:31,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:31,479 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:58:31,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:31,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:58:31,770 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:31,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:58:31,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:58:31,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:58:31,771 INFO L87 Difference]: Start difference. First operand 2209 states and 3833 transitions. Second operand 6 states. [2018-10-24 18:58:39,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:39,314 INFO L93 Difference]: Finished difference Result 5866 states and 10122 transitions. [2018-10-24 18:58:39,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:58:39,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-24 18:58:39,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:39,341 INFO L225 Difference]: With dead ends: 5866 [2018-10-24 18:58:39,342 INFO L226 Difference]: Without dead ends: 3663 [2018-10-24 18:58:39,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:58:39,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2018-10-24 18:58:39,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3639. [2018-10-24 18:58:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2018-10-24 18:58:39,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5517 transitions. [2018-10-24 18:58:39,458 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5517 transitions. Word has length 111 [2018-10-24 18:58:39,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:39,460 INFO L481 AbstractCegarLoop]: Abstraction has 3639 states and 5517 transitions. [2018-10-24 18:58:39,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:58:39,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5517 transitions. [2018-10-24 18:58:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-24 18:58:39,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:39,469 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:58:39,470 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:39,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:39,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1388576545, now seen corresponding path program 1 times [2018-10-24 18:58:39,470 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:39,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:39,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:39,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:39,472 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:58:39,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:39,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:58:39,715 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:39,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:58:39,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:58:39,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:58:39,717 INFO L87 Difference]: Start difference. First operand 3639 states and 5517 transitions. Second operand 6 states. [2018-10-24 18:58:47,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:47,058 INFO L93 Difference]: Finished difference Result 8735 states and 13271 transitions. [2018-10-24 18:58:47,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:58:47,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-10-24 18:58:47,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:47,082 INFO L225 Difference]: With dead ends: 8735 [2018-10-24 18:58:47,082 INFO L226 Difference]: Without dead ends: 5102 [2018-10-24 18:58:47,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:58:47,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-10-24 18:58:47,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5084. [2018-10-24 18:58:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2018-10-24 18:58:47,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6940 transitions. [2018-10-24 18:58:47,211 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6940 transitions. Word has length 115 [2018-10-24 18:58:47,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:47,211 INFO L481 AbstractCegarLoop]: Abstraction has 5084 states and 6940 transitions. [2018-10-24 18:58:47,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:58:47,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6940 transitions. [2018-10-24 18:58:47,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 18:58:47,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:47,215 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:58:47,215 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:47,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:47,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1415495618, now seen corresponding path program 1 times [2018-10-24 18:58:47,216 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:47,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:47,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:47,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:47,217 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:58:47,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:47,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:58:47,655 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:47,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:58:47,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:58:47,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:58:47,657 INFO L87 Difference]: Start difference. First operand 5084 states and 6940 transitions. Second operand 6 states. [2018-10-24 18:58:55,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:55,149 INFO L93 Difference]: Finished difference Result 13307 states and 18750 transitions. [2018-10-24 18:58:55,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:58:55,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-24 18:58:55,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:55,198 INFO L225 Difference]: With dead ends: 13307 [2018-10-24 18:58:55,199 INFO L226 Difference]: Without dead ends: 8229 [2018-10-24 18:58:55,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:58:55,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2018-10-24 18:58:55,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8128. [2018-10-24 18:58:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8128 states. [2018-10-24 18:58:55,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 10817 transitions. [2018-10-24 18:58:55,434 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 10817 transitions. Word has length 146 [2018-10-24 18:58:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:55,435 INFO L481 AbstractCegarLoop]: Abstraction has 8128 states and 10817 transitions. [2018-10-24 18:58:55,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:58:55,435 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 10817 transitions. [2018-10-24 18:58:55,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-24 18:58:55,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:55,441 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:58:55,441 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:55,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:55,442 INFO L82 PathProgramCache]: Analyzing trace with hash 962689689, now seen corresponding path program 1 times [2018-10-24 18:58:55,442 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:55,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:55,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:55,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:55,443 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:58:55,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:58:55,885 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:58:55,886 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2018-10-24 18:58:55,888 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1651], [1653], [1656], [1664], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 18:58:55,958 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:58:55,959 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:58:58,313 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:58:58,315 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:58:58,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:58,328 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:59:00,000 INFO L232 lantSequenceWeakener]: Weakened 171 states. On average, predicates are now at 77.34% of their original sizes. [2018-10-24 18:59:00,001 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:59:00,417 INFO L413 sIntCurrentIteration]: We have 178 unified AI predicates [2018-10-24 18:59:00,418 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:59:00,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:59:00,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 18:59:00,419 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:59:00,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:59:00,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:59:00,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:59:00,420 INFO L87 Difference]: Start difference. First operand 8128 states and 10817 transitions. Second operand 7 states. [2018-10-24 18:59:03,643 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:59:50,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:59:50,161 INFO L93 Difference]: Finished difference Result 16955 states and 22499 transitions. [2018-10-24 18:59:50,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:59:50,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2018-10-24 18:59:50,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:59:50,189 INFO L225 Difference]: With dead ends: 16955 [2018-10-24 18:59:50,190 INFO L226 Difference]: Without dead ends: 8833 [2018-10-24 18:59:50,206 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 179 GetRequests, 173 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 18:59:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8833 states. [2018-10-24 18:59:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8833 to 8831. [2018-10-24 18:59:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8831 states. [2018-10-24 18:59:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8831 states to 8831 states and 11532 transitions. [2018-10-24 18:59:50,394 INFO L78 Accepts]: Start accepts. Automaton has 8831 states and 11532 transitions. Word has length 179 [2018-10-24 18:59:50,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:59:50,394 INFO L481 AbstractCegarLoop]: Abstraction has 8831 states and 11532 transitions. [2018-10-24 18:59:50,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:59:50,394 INFO L276 IsEmpty]: Start isEmpty. Operand 8831 states and 11532 transitions. [2018-10-24 18:59:50,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-24 18:59:50,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:59:50,404 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:59:50,404 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:59:50,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:59:50,405 INFO L82 PathProgramCache]: Analyzing trace with hash 2036158326, now seen corresponding path program 1 times [2018-10-24 18:59:50,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:59:50,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:59:50,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:59:50,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:59:50,406 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:59:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:59:50,928 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:59:51,121 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:59:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 86 proven. 171 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:59:51,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:59:51,527 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:59:51,528 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-10-24 18:59:51,528 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1651], [1653], [1656], [1664], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 18:59:51,538 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:59:51,538 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:00:06,793 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:00:06,794 INFO L272 AbstractInterpreter]: Visited 196 different actions 386 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 19:00:06,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:00:06,803 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:00:10,950 INFO L232 lantSequenceWeakener]: Weakened 64 states. On average, predicates are now at 78.06% of their original sizes. [2018-10-24 19:00:10,950 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:00:49,685 INFO L413 sIntCurrentIteration]: We have 365 unified AI predicates [2018-10-24 19:00:49,685 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:00:49,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:00:49,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [11] total 28 [2018-10-24 19:00:49,686 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:00:49,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 19:00:49,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 19:00:49,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-10-24 19:00:49,688 INFO L87 Difference]: Start difference. First operand 8831 states and 11532 transitions. Second operand 19 states. Received shutdown request... [2018-10-24 19:01:47,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:01:47,713 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:01:47,718 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:01:47,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:01:47 BoogieIcfgContainer [2018-10-24 19:01:47,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:01:47,720 INFO L168 Benchmark]: Toolchain (without parser) took 224819.89 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 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 19:01:47,721 INFO L168 Benchmark]: CDTParser took 0.24 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 19:01:47,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1874.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:47,722 INFO L168 Benchmark]: Boogie Procedure Inliner took 439.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -937.8 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:47,723 INFO L168 Benchmark]: Boogie Preprocessor took 265.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:47,724 INFO L168 Benchmark]: RCFGBuilder took 9391.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 512.4 MB). Peak memory consumption was 512.4 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:47,725 INFO L168 Benchmark]: TraceAbstraction took 212843.25 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -827.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 19:01:47,730 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1874.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 439.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -937.8 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 265.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9391.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 512.4 MB). Peak memory consumption was 512.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212843.25 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -827.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 36]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 36). Cancelled while BasicCegarLoop was constructing difference of abstraction (8831states) and FLOYD_HOARE automaton (currently 9 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (187 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 212.7s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 145.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1428 SDtfs, 14670 SDslu, 703 SDs, 0 SdLazy, 23202 SolverSat, 5604 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 592 GetRequests, 456 SyntacticMatches, 81 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 39.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8831occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995499372781381 AbsIntWeakeningRatio, 0.10681399631675875 AbsIntAvgWeakeningVarsNumRemoved, 465.2670349907919 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 166 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1021 NumberOfCodeBlocks, 1021 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1014 ConstructedInterpolants, 0 QuantifiedInterpolants, 1587463 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 150/388 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown