java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label29_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:22:19,789 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:22:19,791 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:22:19,807 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:22:19,807 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:22:19,808 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:22:19,809 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:22:19,811 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:22:19,813 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:22:19,814 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:22:19,815 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:22:19,815 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:22:19,816 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:22:19,817 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:22:19,818 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:22:19,819 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:22:19,820 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:22:19,821 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:22:19,824 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:22:19,825 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:22:19,826 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:22:19,828 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:22:19,830 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 12:22:19,845 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:22:19,845 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:22:19,846 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:22:19,847 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:22:19,847 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 12:22:19,870 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:22:19,871 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:22:19,871 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:22:19,872 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:22:19,872 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:22:19,872 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:22:19,872 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:22:19,872 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:22:19,873 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:22:19,873 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:22:19,873 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:22:19,873 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:22:19,874 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:22:19,874 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:22:19,874 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:22:19,874 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:22:19,874 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:22:19,875 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:22:19,875 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:22:19,875 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:22:19,875 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:22:19,875 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:22:19,876 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:22:19,876 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:22:19,876 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:22:19,876 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:22:19,877 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:22:19,877 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:22:19,877 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:22:19,877 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:22:19,877 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:22:19,877 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:22:19,878 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:22:19,878 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:22:19,920 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:22:19,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:22:19,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:22:19,938 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:22:19,938 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:22:19,939 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label29_true-unreach-call.c [2018-09-18 12:22:20,295 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e21cdccb2/e5a92bf0535e44f5a7e5f35ea7d54534/FLAGd0c5fa821 [2018-09-18 12:22:20,716 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:22:20,717 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label29_true-unreach-call.c [2018-09-18 12:22:20,741 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e21cdccb2/e5a92bf0535e44f5a7e5f35ea7d54534/FLAGd0c5fa821 [2018-09-18 12:22:20,758 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e21cdccb2/e5a92bf0535e44f5a7e5f35ea7d54534 [2018-09-18 12:22:20,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:22:20,773 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:22:20,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:22:20,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:22:20,783 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:22:20,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:22:20" (1/1) ... [2018-09-18 12:22:20,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1683e0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:20, skipping insertion in model container [2018-09-18 12:22:20,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:22:20" (1/1) ... [2018-09-18 12:22:20,803 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:22:21,892 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:22:21,910 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:22:22,414 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:22:22,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:22 WrapperNode [2018-09-18 12:22:22,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:22:22,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:22:22,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:22:22,565 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:22:22,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:22" (1/1) ... [2018-09-18 12:22:22,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:22" (1/1) ... [2018-09-18 12:22:22,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:22:22,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:22:22,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:22:22,768 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:22:23,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:22" (1/1) ... [2018-09-18 12:22:23,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:22" (1/1) ... [2018-09-18 12:22:23,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:22" (1/1) ... [2018-09-18 12:22:23,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:22" (1/1) ... [2018-09-18 12:22:23,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:22" (1/1) ... [2018-09-18 12:22:23,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:22" (1/1) ... [2018-09-18 12:22:23,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:22" (1/1) ... [2018-09-18 12:22:23,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:22:23,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:22:23,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:22:23,500 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:22:23,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 12:22:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:22:23,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:22:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 12:22:23,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 12:22:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:22:23,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:22:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:22:23,575 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:22:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:22:23,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:22:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:22:23,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:22:32,109 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:22:32,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:22:32 BoogieIcfgContainer [2018-09-18 12:22:32,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:22:32,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:22:32,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:22:32,115 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:22:32,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:22:20" (1/3) ... [2018-09-18 12:22:32,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3a1fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:22:32, skipping insertion in model container [2018-09-18 12:22:32,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:22:22" (2/3) ... [2018-09-18 12:22:32,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3a1fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:22:32, skipping insertion in model container [2018-09-18 12:22:32,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:22:32" (3/3) ... [2018-09-18 12:22:32,118 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label29_true-unreach-call.c [2018-09-18 12:22:32,128 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:22:32,138 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:22:32,196 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:22:32,197 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:22:32,197 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:22:32,197 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:22:32,197 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:22:32,197 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:22:32,197 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:22:32,198 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:22:32,198 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:22:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-18 12:22:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-18 12:22:32,242 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:22:32,243 INFO L376 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] [2018-09-18 12:22:32,244 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:22:32,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1838383484, now seen corresponding path program 1 times [2018-09-18 12:22:32,253 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:22:32,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:32,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:32,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:32,305 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:22:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:32,741 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:22:32,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:22:32,850 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:22:32,851 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 12:22:32,851 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:22:32,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:22:32,876 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:22:32,877 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 12:22:32,880 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-18 12:22:39,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:22:39,998 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-18 12:22:39,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:22:40,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-09-18 12:22:40,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:22:40,037 INFO L225 Difference]: With dead ends: 2251 [2018-09-18 12:22:40,037 INFO L226 Difference]: Without dead ends: 1474 [2018-09-18 12:22:40,050 INFO L604 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 [2018-09-18 12:22:40,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-18 12:22:40,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-18 12:22:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-18 12:22:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-09-18 12:22:40,205 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 46 [2018-09-18 12:22:40,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:22:40,206 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-09-18 12:22:40,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:22:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-09-18 12:22:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-18 12:22:40,213 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:22:40,213 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:22:40,214 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:22:40,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1709557070, now seen corresponding path program 1 times [2018-09-18 12:22:40,214 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:22:40,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:40,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:40,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:40,216 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:22:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:40,474 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:22:40,475 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:22:40,475 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:22:40,475 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:22:40,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:22:40,478 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:22:40,478 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:22:40,478 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 5 states. [2018-09-18 12:22:48,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:22:48,667 INFO L93 Difference]: Finished difference Result 3698 states and 6787 transitions. [2018-09-18 12:22:48,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:22:48,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2018-09-18 12:22:48,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:22:48,686 INFO L225 Difference]: With dead ends: 3698 [2018-09-18 12:22:48,686 INFO L226 Difference]: Without dead ends: 2230 [2018-09-18 12:22:48,693 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:22:48,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2018-09-18 12:22:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2209. [2018-09-18 12:22:48,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2018-09-18 12:22:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3833 transitions. [2018-09-18 12:22:48,769 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3833 transitions. Word has length 118 [2018-09-18 12:22:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:22:48,769 INFO L480 AbstractCegarLoop]: Abstraction has 2209 states and 3833 transitions. [2018-09-18 12:22:48,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:22:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3833 transitions. [2018-09-18 12:22:48,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-09-18 12:22:48,782 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:22:48,782 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:22:48,782 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:22:48,783 INFO L82 PathProgramCache]: Analyzing trace with hash -188742945, now seen corresponding path program 1 times [2018-09-18 12:22:48,783 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:22:48,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:48,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:48,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:48,785 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:22:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:22:49,033 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:22:49,033 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:22:49,034 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:22:49,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:22:49,034 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:22:49,035 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:22:49,035 INFO L87 Difference]: Start difference. First operand 2209 states and 3833 transitions. Second operand 6 states. [2018-09-18 12:22:56,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:22:56,957 INFO L93 Difference]: Finished difference Result 5866 states and 10122 transitions. [2018-09-18 12:22:56,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:22:56,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-09-18 12:22:56,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:22:56,982 INFO L225 Difference]: With dead ends: 5866 [2018-09-18 12:22:56,982 INFO L226 Difference]: Without dead ends: 3663 [2018-09-18 12:22:56,990 INFO L604 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 [2018-09-18 12:22:56,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2018-09-18 12:22:57,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3639. [2018-09-18 12:22:57,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2018-09-18 12:22:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5517 transitions. [2018-09-18 12:22:57,105 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5517 transitions. Word has length 141 [2018-09-18 12:22:57,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:22:57,105 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 5517 transitions. [2018-09-18 12:22:57,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:22:57,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5517 transitions. [2018-09-18 12:22:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-18 12:22:57,111 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:22:57,112 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:22:57,112 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:22:57,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1463465367, now seen corresponding path program 1 times [2018-09-18 12:22:57,112 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:22:57,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:57,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:22:57,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:22:57,114 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:22:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:22:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:22:57,389 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:22:57,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:22:57,389 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:22:57,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:22:57,390 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:22:57,390 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:22:57,391 INFO L87 Difference]: Start difference. First operand 3639 states and 5517 transitions. Second operand 6 states. [2018-09-18 12:23:04,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:04,868 INFO L93 Difference]: Finished difference Result 8735 states and 13271 transitions. [2018-09-18 12:23:04,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:23:04,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-09-18 12:23:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:04,892 INFO L225 Difference]: With dead ends: 8735 [2018-09-18 12:23:04,893 INFO L226 Difference]: Without dead ends: 5102 [2018-09-18 12:23:04,904 INFO L604 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 [2018-09-18 12:23:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-09-18 12:23:04,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5084. [2018-09-18 12:23:04,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2018-09-18 12:23:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6940 transitions. [2018-09-18 12:23:05,009 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6940 transitions. Word has length 145 [2018-09-18 12:23:05,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:05,009 INFO L480 AbstractCegarLoop]: Abstraction has 5084 states and 6940 transitions. [2018-09-18 12:23:05,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:23:05,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6940 transitions. [2018-09-18 12:23:05,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-18 12:23:05,013 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:05,013 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:23:05,013 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:05,014 INFO L82 PathProgramCache]: Analyzing trace with hash 2101194106, now seen corresponding path program 1 times [2018-09-18 12:23:05,014 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:05,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:05,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:05,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:05,015 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:05,275 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:23:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:23:05,341 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:23:05,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:23:05,341 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:23:05,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:23:05,342 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:23:05,342 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:23:05,343 INFO L87 Difference]: Start difference. First operand 5084 states and 6940 transitions. Second operand 6 states. [2018-09-18 12:23:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:10,946 INFO L93 Difference]: Finished difference Result 13307 states and 18750 transitions. [2018-09-18 12:23:10,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:23:10,952 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-09-18 12:23:10,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:10,991 INFO L225 Difference]: With dead ends: 13307 [2018-09-18 12:23:10,992 INFO L226 Difference]: Without dead ends: 8229 [2018-09-18 12:23:11,009 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:23:11,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2018-09-18 12:23:11,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8128. [2018-09-18 12:23:11,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8128 states. [2018-09-18 12:23:11,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 10817 transitions. [2018-09-18 12:23:11,240 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 10817 transitions. Word has length 176 [2018-09-18 12:23:11,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:11,241 INFO L480 AbstractCegarLoop]: Abstraction has 8128 states and 10817 transitions. [2018-09-18 12:23:11,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:23:11,241 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 10817 transitions. [2018-09-18 12:23:11,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-09-18 12:23:11,248 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:11,248 INFO L376 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, 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] [2018-09-18 12:23:11,248 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:11,249 INFO L82 PathProgramCache]: Analyzing trace with hash 241142769, now seen corresponding path program 1 times [2018-09-18 12:23:11,249 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:11,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:11,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:11,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:11,250 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:23:11,614 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:11,614 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:23:11,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:11,736 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:11,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-09-18 12:23:11,976 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:23:12,582 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:23:12,582 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-18 12:23:12,583 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:23:12,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:23:12,584 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:23:12,584 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:23:12,584 INFO L87 Difference]: Start difference. First operand 8128 states and 10817 transitions. Second operand 5 states. [2018-09-18 12:23:21,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:21,960 INFO L93 Difference]: Finished difference Result 25829 states and 35540 transitions. [2018-09-18 12:23:21,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:23:21,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2018-09-18 12:23:21,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:22,051 INFO L225 Difference]: With dead ends: 25829 [2018-09-18 12:23:22,051 INFO L226 Difference]: Without dead ends: 17707 [2018-09-18 12:23:22,083 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 416 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:23:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17707 states. [2018-09-18 12:23:22,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17707 to 17372. [2018-09-18 12:23:22,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17372 states. [2018-09-18 12:23:22,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17372 states to 17372 states and 21910 transitions. [2018-09-18 12:23:22,716 INFO L78 Accepts]: Start accepts. Automaton has 17372 states and 21910 transitions. Word has length 209 [2018-09-18 12:23:22,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:22,717 INFO L480 AbstractCegarLoop]: Abstraction has 17372 states and 21910 transitions. [2018-09-18 12:23:22,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:23:22,717 INFO L276 IsEmpty]: Start isEmpty. Operand 17372 states and 21910 transitions. [2018-09-18 12:23:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-18 12:23:22,731 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:22,731 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:23:22,732 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:22,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1330104734, now seen corresponding path program 1 times [2018-09-18 12:23:22,733 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:22,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:22,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:22,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:22,741 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:23:23,047 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:23:23,048 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:23:23,048 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:23:23,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:23:23,049 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:23:23,049 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:23:23,049 INFO L87 Difference]: Start difference. First operand 17372 states and 21910 transitions. Second operand 4 states. [2018-09-18 12:23:30,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:30,712 INFO L93 Difference]: Finished difference Result 41802 states and 53196 transitions. [2018-09-18 12:23:30,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:23:30,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 270 [2018-09-18 12:23:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:30,807 INFO L225 Difference]: With dead ends: 41802 [2018-09-18 12:23:30,808 INFO L226 Difference]: Without dead ends: 24436 [2018-09-18 12:23:30,866 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:23:30,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24436 states. [2018-09-18 12:23:31,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24436 to 24434. [2018-09-18 12:23:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24434 states. [2018-09-18 12:23:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24434 states to 24434 states and 29027 transitions. [2018-09-18 12:23:31,337 INFO L78 Accepts]: Start accepts. Automaton has 24434 states and 29027 transitions. Word has length 270 [2018-09-18 12:23:31,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:31,337 INFO L480 AbstractCegarLoop]: Abstraction has 24434 states and 29027 transitions. [2018-09-18 12:23:31,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:23:31,338 INFO L276 IsEmpty]: Start isEmpty. Operand 24434 states and 29027 transitions. [2018-09-18 12:23:31,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-09-18 12:23:31,347 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:31,348 INFO L376 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, 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, 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] [2018-09-18 12:23:31,348 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:31,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1219557644, now seen corresponding path program 1 times [2018-09-18 12:23:31,349 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:31,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:31,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:31,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:31,350 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-09-18 12:23:31,638 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:23:31,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:23:31,639 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:23:31,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:23:31,640 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:23:31,640 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:23:31,640 INFO L87 Difference]: Start difference. First operand 24434 states and 29027 transitions. Second operand 4 states. [2018-09-18 12:23:40,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:40,859 INFO L93 Difference]: Finished difference Result 88414 states and 108281 transitions. [2018-09-18 12:23:40,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:23:40,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 304 [2018-09-18 12:23:40,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:41,056 INFO L225 Difference]: With dead ends: 88414 [2018-09-18 12:23:41,056 INFO L226 Difference]: Without dead ends: 63986 [2018-09-18 12:23:41,112 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:23:41,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63986 states. [2018-09-18 12:23:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63986 to 59758. [2018-09-18 12:23:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59758 states. [2018-09-18 12:23:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59758 states to 59758 states and 71469 transitions. [2018-09-18 12:23:42,110 INFO L78 Accepts]: Start accepts. Automaton has 59758 states and 71469 transitions. Word has length 304 [2018-09-18 12:23:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:42,111 INFO L480 AbstractCegarLoop]: Abstraction has 59758 states and 71469 transitions. [2018-09-18 12:23:42,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:23:42,111 INFO L276 IsEmpty]: Start isEmpty. Operand 59758 states and 71469 transitions. [2018-09-18 12:23:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-09-18 12:23:42,149 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:42,150 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:23:42,150 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:42,150 INFO L82 PathProgramCache]: Analyzing trace with hash 187052851, now seen corresponding path program 1 times [2018-09-18 12:23:42,151 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:42,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:42,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:42,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:42,152 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-18 12:23:43,338 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:43,338 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:23:43,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:43,353 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:43,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-18 12:23:43,927 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:44,439 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-18 12:23:44,461 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:44,461 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:23:44,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:44,478 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:44,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-18 12:23:45,024 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-18 12:23:45,321 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:23:45,321 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:23:45,322 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:23:45,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:23:45,324 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:23:45,324 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:23:45,324 INFO L87 Difference]: Start difference. First operand 59758 states and 71469 transitions. Second operand 9 states. [2018-09-18 12:23:52,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:23:52,854 INFO L93 Difference]: Finished difference Result 118981 states and 143513 transitions. [2018-09-18 12:23:52,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 12:23:52,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 437 [2018-09-18 12:23:52,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:23:53,013 INFO L225 Difference]: With dead ends: 118981 [2018-09-18 12:23:53,013 INFO L226 Difference]: Without dead ends: 59229 [2018-09-18 12:23:53,096 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1766 GetRequests, 1744 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2018-09-18 12:23:53,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59229 states. [2018-09-18 12:23:53,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59229 to 56176. [2018-09-18 12:23:53,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56176 states. [2018-09-18 12:23:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56176 states to 56176 states and 62942 transitions. [2018-09-18 12:23:53,858 INFO L78 Accepts]: Start accepts. Automaton has 56176 states and 62942 transitions. Word has length 437 [2018-09-18 12:23:53,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:23:53,858 INFO L480 AbstractCegarLoop]: Abstraction has 56176 states and 62942 transitions. [2018-09-18 12:23:53,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:23:53,859 INFO L276 IsEmpty]: Start isEmpty. Operand 56176 states and 62942 transitions. [2018-09-18 12:23:53,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2018-09-18 12:23:53,926 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:23:53,927 INFO L376 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:23:53,927 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:23:53,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1665887872, now seen corresponding path program 1 times [2018-09-18 12:23:53,927 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:23:53,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:53,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:53,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:23:53,929 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:23:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:54,902 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 243 proven. 194 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-18 12:23:54,903 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:54,903 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:23:54,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:54,911 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:55,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 516 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-09-18 12:23:55,474 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 243 proven. 194 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-18 12:23:56,056 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:23:56,056 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:23:56,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:23:56,074 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:23:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:23:56,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:23:57,661 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 516 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-09-18 12:23:57,662 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:23:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 243 proven. 194 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-18 12:23:58,278 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:23:58,279 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-09-18 12:23:58,279 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:23:58,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:23:58,280 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:23:58,280 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:23:58,280 INFO L87 Difference]: Start difference. First operand 56176 states and 62942 transitions. Second operand 9 states. [2018-09-18 12:24:16,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:24:16,868 INFO L93 Difference]: Finished difference Result 158181 states and 184387 transitions. [2018-09-18 12:24:16,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 12:24:16,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 697 [2018-09-18 12:24:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:24:17,245 INFO L225 Difference]: With dead ends: 158181 [2018-09-18 12:24:17,246 INFO L226 Difference]: Without dead ends: 102011 [2018-09-18 12:24:17,394 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2810 GetRequests, 2783 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:24:17,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102011 states. [2018-09-18 12:24:19,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102011 to 101231. [2018-09-18 12:24:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101231 states. [2018-09-18 12:24:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101231 states to 101231 states and 116519 transitions. [2018-09-18 12:24:19,816 INFO L78 Accepts]: Start accepts. Automaton has 101231 states and 116519 transitions. Word has length 697 [2018-09-18 12:24:19,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:24:19,816 INFO L480 AbstractCegarLoop]: Abstraction has 101231 states and 116519 transitions. [2018-09-18 12:24:19,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:24:19,817 INFO L276 IsEmpty]: Start isEmpty. Operand 101231 states and 116519 transitions. [2018-09-18 12:24:19,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2018-09-18 12:24:19,896 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:19,897 INFO L376 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:24:19,897 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:19,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1490384244, now seen corresponding path program 1 times [2018-09-18 12:24:19,898 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:19,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:19,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:19,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:19,899 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2018-09-18 12:24:20,483 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:24:20,483 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:24:20,483 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:24:20,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:24:20,484 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:24:20,484 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:24:20,484 INFO L87 Difference]: Start difference. First operand 101231 states and 116519 transitions. Second operand 4 states. [2018-09-18 12:24:27,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:24:27,686 INFO L93 Difference]: Finished difference Result 252438 states and 295055 transitions. [2018-09-18 12:24:27,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:24:27,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 752 [2018-09-18 12:24:27,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:24:29,210 INFO L225 Difference]: With dead ends: 252438 [2018-09-18 12:24:29,210 INFO L226 Difference]: Without dead ends: 151916 [2018-09-18 12:24:29,416 INFO L604 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 [2018-09-18 12:24:29,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151916 states. [2018-09-18 12:24:31,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151916 to 149980. [2018-09-18 12:24:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149980 states. [2018-09-18 12:24:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149980 states to 149980 states and 169719 transitions. [2018-09-18 12:24:31,856 INFO L78 Accepts]: Start accepts. Automaton has 149980 states and 169719 transitions. Word has length 752 [2018-09-18 12:24:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:24:31,858 INFO L480 AbstractCegarLoop]: Abstraction has 149980 states and 169719 transitions. [2018-09-18 12:24:31,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:24:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 149980 states and 169719 transitions. [2018-09-18 12:24:31,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2018-09-18 12:24:31,900 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:31,900 INFO L376 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:24:31,901 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:31,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1109802581, now seen corresponding path program 1 times [2018-09-18 12:24:31,901 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:31,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:31,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:31,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:31,902 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:33,218 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-09-18 12:24:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 5 proven. 133 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2018-09-18 12:24:34,668 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:24:34,668 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:24:34,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:34,679 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:24:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:34,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:24:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2018-09-18 12:24:35,427 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:24:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 117 proven. 236 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-09-18 12:24:37,786 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:24:37,787 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 16 [2018-09-18 12:24:37,787 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:24:37,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:24:37,788 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:24:37,788 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2018-09-18 12:24:37,788 INFO L87 Difference]: Start difference. First operand 149980 states and 169719 transitions. Second operand 5 states. [2018-09-18 12:24:46,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:24:46,873 INFO L93 Difference]: Finished difference Result 306446 states and 347300 transitions. [2018-09-18 12:24:46,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:24:46,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 771 [2018-09-18 12:24:46,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:24:47,276 INFO L225 Difference]: With dead ends: 306446 [2018-09-18 12:24:47,276 INFO L226 Difference]: Without dead ends: 157175 [2018-09-18 12:24:47,500 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1561 GetRequests, 1543 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-09-18 12:24:47,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157175 states. [2018-09-18 12:24:50,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157175 to 157146. [2018-09-18 12:24:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157146 states. [2018-09-18 12:24:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157146 states to 157146 states and 177762 transitions. [2018-09-18 12:24:50,306 INFO L78 Accepts]: Start accepts. Automaton has 157146 states and 177762 transitions. Word has length 771 [2018-09-18 12:24:50,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:24:50,306 INFO L480 AbstractCegarLoop]: Abstraction has 157146 states and 177762 transitions. [2018-09-18 12:24:50,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:24:50,307 INFO L276 IsEmpty]: Start isEmpty. Operand 157146 states and 177762 transitions. [2018-09-18 12:24:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2018-09-18 12:24:50,405 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:24:50,406 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:24:50,406 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:24:50,407 INFO L82 PathProgramCache]: Analyzing trace with hash -660792959, now seen corresponding path program 1 times [2018-09-18 12:24:50,407 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:24:50,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:50,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:50,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:24:50,408 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:24:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:52,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 24 proven. 174 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2018-09-18 12:24:52,423 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:24:52,423 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:24:52,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:24:52,431 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:24:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:24:52,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:24:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2018-09-18 12:24:53,189 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:24:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 156 proven. 564 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2018-09-18 12:24:57,891 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:24:57,892 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 18 [2018-09-18 12:24:57,892 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:24:57,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:24:57,893 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:24:57,894 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2018-09-18 12:24:57,894 INFO L87 Difference]: Start difference. First operand 157146 states and 177762 transitions. Second operand 5 states. [2018-09-18 12:25:06,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:06,732 INFO L93 Difference]: Finished difference Result 298159 states and 333858 transitions. [2018-09-18 12:25:06,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:25:06,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 940 [2018-09-18 12:25:06,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:07,027 INFO L225 Difference]: With dead ends: 298159 [2018-09-18 12:25:07,027 INFO L226 Difference]: Without dead ends: 141722 [2018-09-18 12:25:07,231 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1902 GetRequests, 1875 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2018-09-18 12:25:07,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141722 states. [2018-09-18 12:25:09,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141722 to 136748. [2018-09-18 12:25:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136748 states. [2018-09-18 12:25:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136748 states to 136748 states and 148815 transitions. [2018-09-18 12:25:09,287 INFO L78 Accepts]: Start accepts. Automaton has 136748 states and 148815 transitions. Word has length 940 [2018-09-18 12:25:09,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:09,288 INFO L480 AbstractCegarLoop]: Abstraction has 136748 states and 148815 transitions. [2018-09-18 12:25:09,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:25:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 136748 states and 148815 transitions. [2018-09-18 12:25:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2018-09-18 12:25:09,309 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:09,309 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:25:09,310 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:09,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1505259694, now seen corresponding path program 1 times [2018-09-18 12:25:09,310 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:09,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:09,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:09,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:09,311 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:09,937 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 12:25:10,152 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 12:25:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 220 proven. 669 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-09-18 12:25:11,890 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:11,890 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:25:11,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:11,898 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:12,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:12,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 817 proven. 2 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2018-09-18 12:25:12,853 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 287 proven. 242 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2018-09-18 12:25:14,728 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:14,729 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:25:14,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:14,747 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:15,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 750 proven. 69 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2018-09-18 12:25:16,602 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 171 proven. 718 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-09-18 12:25:18,134 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:25:18,135 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 5, 8, 8] total 27 [2018-09-18 12:25:18,135 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:25:18,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-18 12:25:18,137 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-18 12:25:18,138 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2018-09-18 12:25:18,138 INFO L87 Difference]: Start difference. First operand 136748 states and 148815 transitions. Second operand 16 states. [2018-09-18 12:25:26,198 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-09-18 12:25:44,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:25:44,240 INFO L93 Difference]: Finished difference Result 271736 states and 296012 transitions. [2018-09-18 12:25:44,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-18 12:25:44,241 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 958 [2018-09-18 12:25:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:25:44,496 INFO L225 Difference]: With dead ends: 271736 [2018-09-18 12:25:44,496 INFO L226 Difference]: Without dead ends: 134539 [2018-09-18 12:25:44,616 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3931 GetRequests, 3857 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=972, Invalid=4140, Unknown=0, NotChecked=0, Total=5112 [2018-09-18 12:25:44,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134539 states. [2018-09-18 12:25:46,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134539 to 133688. [2018-09-18 12:25:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133688 states. [2018-09-18 12:25:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133688 states to 133688 states and 142992 transitions. [2018-09-18 12:25:46,221 INFO L78 Accepts]: Start accepts. Automaton has 133688 states and 142992 transitions. Word has length 958 [2018-09-18 12:25:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:25:46,221 INFO L480 AbstractCegarLoop]: Abstraction has 133688 states and 142992 transitions. [2018-09-18 12:25:46,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-18 12:25:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 133688 states and 142992 transitions. [2018-09-18 12:25:46,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1469 [2018-09-18 12:25:46,257 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:25:46,258 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:25:46,258 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:25:46,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1376442153, now seen corresponding path program 1 times [2018-09-18 12:25:46,259 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:25:46,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:46,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:46,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:25:46,260 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:25:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 582 proven. 1090 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2018-09-18 12:25:51,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:51,908 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:25:51,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:51,916 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:52,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 1531 proven. 2 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2018-09-18 12:25:53,468 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 832 proven. 213 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2018-09-18 12:25:55,036 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:25:55,036 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:25:55,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:25:55,052 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:25:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:25:55,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:25:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 1526 proven. 14 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2018-09-18 12:25:56,706 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:25:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 832 proven. 213 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2018-09-18 12:25:58,479 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:25:58,480 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 5, 5, 5, 5] total 25 [2018-09-18 12:25:58,480 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:25:58,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-18 12:25:58,482 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-18 12:25:58,482 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2018-09-18 12:25:58,482 INFO L87 Difference]: Start difference. First operand 133688 states and 142992 transitions. Second operand 22 states. Received shutdown request... [2018-09-18 12:26:00,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:26:00,504 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:26:00,512 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:26:00,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:26:00 BoogieIcfgContainer [2018-09-18 12:26:00,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:26:00,514 INFO L168 Benchmark]: Toolchain (without parser) took 219743.53 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-18 12:26:00,515 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 12:26:00,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1789.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. [2018-09-18 12:26:00,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 202.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:26:00,517 INFO L168 Benchmark]: Boogie Preprocessor took 731.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 809.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-09-18 12:26:00,518 INFO L168 Benchmark]: RCFGBuilder took 8610.63 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: 498.3 MB). Peak memory consumption was 498.3 MB. Max. memory is 7.1 GB. [2018-09-18 12:26:00,519 INFO L168 Benchmark]: TraceAbstraction took 208401.78 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-18 12:26:00,523 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1789.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 202.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 731.83 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 809.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8610.63 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: 498.3 MB). Peak memory consumption was 498.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208401.78 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). 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: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while BasicCegarLoop was constructing difference of abstraction (133688states) and FLOYD_HOARE automaton (currently 7 states, 22 states before enhancement), while ReachableStatesComputation was computing reachable states (286 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 208.3s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 146.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4633 SDtfs, 53908 SDslu, 2948 SDs, 0 SdLazy, 90655 SolverSat, 17187 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18358 GetRequests, 18102 SyntacticMatches, 45 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2270 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157146occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 16352 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 31.8s InterpolantComputationTime, 16472 NumberOfCodeBlocks, 16472 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 25475 ConstructedInterpolants, 0 QuantifiedInterpolants, 89454322 SizeOfPredicates, 15 NumberOfNonLiveVariables, 12042 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 37 InterpolantComputations, 11 PerfectInterpolantSequences, 22464/27533 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label29_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-26-00-536.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label29_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-26-00-536.csv Completed graceful shutdown