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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:16:56,744 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:16:56,750 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:16:56,769 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:16:56,769 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:16:56,770 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:16:56,771 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:16:56,773 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:16:56,775 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:16:56,776 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:16:56,777 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:16:56,777 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:16:56,778 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:16:56,779 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:16:56,780 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:16:56,781 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:16:56,782 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:16:56,784 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:16:56,789 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:16:56,793 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:16:56,795 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:16:56,798 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:16:56,805 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:16:56,805 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:16:56,805 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:16:56,806 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:16:56,807 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:16:56,810 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:16:56,811 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:16:56,812 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:16:56,812 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:16:56,813 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:16:56,813 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:16:56,813 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:16:56,814 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:16:56,815 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:16:56,815 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:16:56,838 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:16:56,838 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:16:56,839 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:16:56,839 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:16:56,839 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:16:56,839 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:16:56,841 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:16:56,841 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:16:56,841 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:16:56,841 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:16:56,842 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:16:56,842 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:16:56,842 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:16:56,844 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:16:56,844 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:16:56,844 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:16:56,844 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:16:56,844 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:16:56,845 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:16:56,845 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:16:56,845 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:16:56,845 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:16:56,845 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:16:56,847 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:16:56,847 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:16:56,847 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:16:56,847 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:16:56,848 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:16:56,848 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:16:56,848 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:16:56,848 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:16:56,848 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:16:56,849 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:16:56,849 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:16:56,914 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:16:56,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:16:56,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:16:56,933 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:16:56,933 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:16:56,934 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c [2018-11-07 03:16:56,998 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a178b1bdc/09b80ae24b24414188303549824aa5a5/FLAGdb2177e73 [2018-11-07 03:16:57,859 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:16:57,860 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c [2018-11-07 03:16:57,900 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a178b1bdc/09b80ae24b24414188303549824aa5a5/FLAGdb2177e73 [2018-11-07 03:16:57,920 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a178b1bdc/09b80ae24b24414188303549824aa5a5 [2018-11-07 03:16:57,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:16:57,936 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:16:57,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:16:57,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:16:57,941 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:16:57,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:16:57" (1/1) ... [2018-11-07 03:16:57,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57afd926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:16:57, skipping insertion in model container [2018-11-07 03:16:57,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:16:57" (1/1) ... [2018-11-07 03:16:57,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:16:58,148 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:16:59,667 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:16:59,673 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:17:00,427 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:17:00,464 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:17:00,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:00 WrapperNode [2018-11-07 03:17:00,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:17:00,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:17:00,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:17:00,466 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:17:00,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:00" (1/1) ... [2018-11-07 03:17:00,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:00" (1/1) ... [2018-11-07 03:17:00,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:17:00,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:17:00,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:17:00,874 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:17:00,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:00" (1/1) ... [2018-11-07 03:17:00,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:00" (1/1) ... [2018-11-07 03:17:00,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:00" (1/1) ... [2018-11-07 03:17:00,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:00" (1/1) ... [2018-11-07 03:17:01,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:00" (1/1) ... [2018-11-07 03:17:01,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:00" (1/1) ... [2018-11-07 03:17:01,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:00" (1/1) ... [2018-11-07 03:17:01,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:17:01,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:17:01,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:17:01,156 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:17:01,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:00" (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 [2018-11-07 03:17:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:17:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:17:01,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:17:01,230 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 03:17:01,231 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 03:17:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 03:17:01,231 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 03:17:01,231 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:17:01,231 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:17:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:17:01,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:17:01,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:17:01,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:17:01,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:17:01,233 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:17:10,880 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:17:10,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:17:10 BoogieIcfgContainer [2018-11-07 03:17:10,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:17:10,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:17:10,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:17:10,885 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:17:10,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:16:57" (1/3) ... [2018-11-07 03:17:10,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382f8ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:17:10, skipping insertion in model container [2018-11-07 03:17:10,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:00" (2/3) ... [2018-11-07 03:17:10,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382f8ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:17:10, skipping insertion in model container [2018-11-07 03:17:10,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:17:10" (3/3) ... [2018-11-07 03:17:10,889 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label20_true-unreach-call.c [2018-11-07 03:17:10,899 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:17:10,909 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:17:10,929 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:17:10,983 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:17:10,983 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:17:10,983 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:17:10,983 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:17:10,984 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:17:10,984 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:17:10,984 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:17:10,984 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:17:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 03:17:11,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-07 03:17:11,051 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:17:11,052 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:17:11,055 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:17:11,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:17:11,063 INFO L82 PathProgramCache]: Analyzing trace with hash -113256892, now seen corresponding path program 1 times [2018-11-07 03:17:11,067 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:17:11,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:11,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:17:11,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:11,124 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:17:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:17:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:17:11,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:17:11,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:17:11,666 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:17:11,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:17:11,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:17:11,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:17:11,692 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 03:17:23,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:17:23,924 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-11-07 03:17:23,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:17:23,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-11-07 03:17:23,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:17:24,001 INFO L225 Difference]: With dead ends: 3968 [2018-11-07 03:17:24,001 INFO L226 Difference]: Without dead ends: 2842 [2018-11-07 03:17:24,017 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:17:24,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-07 03:17:24,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-11-07 03:17:24,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-11-07 03:17:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-11-07 03:17:24,209 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 62 [2018-11-07 03:17:24,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:17:24,210 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-11-07 03:17:24,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:17:24,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-11-07 03:17:24,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 03:17:24,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:17:24,228 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:17:24,228 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:17:24,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:17:24,229 INFO L82 PathProgramCache]: Analyzing trace with hash 12905824, now seen corresponding path program 1 times [2018-11-07 03:17:24,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:17:24,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:24,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:17:24,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:24,232 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:17:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:17:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:17:24,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:17:24,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:17:24,508 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:17:24,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:17:24,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:17:24,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:17:24,511 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-11-07 03:17:40,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:17:40,519 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-11-07 03:17:40,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:17:40,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-11-07 03:17:40,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:17:40,559 INFO L225 Difference]: With dead ends: 5673 [2018-11-07 03:17:40,559 INFO L226 Difference]: Without dead ends: 3698 [2018-11-07 03:17:40,568 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:17:40,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-11-07 03:17:40,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-11-07 03:17:40,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-11-07 03:17:40,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-11-07 03:17:40,696 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 132 [2018-11-07 03:17:40,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:17:40,697 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-11-07 03:17:40,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:17:40,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-11-07 03:17:40,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 03:17:40,701 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:17:40,701 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:17:40,702 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:17:40,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:17:40,702 INFO L82 PathProgramCache]: Analyzing trace with hash -906091524, now seen corresponding path program 1 times [2018-11-07 03:17:40,702 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:17:40,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:40,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:17:40,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:40,704 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:17:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:17:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:17:41,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:17:41,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:17:41,056 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:17:41,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:17:41,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:17:41,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:17:41,058 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-11-07 03:17:50,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:17:50,829 INFO L93 Difference]: Finished difference Result 10955 states and 17866 transitions. [2018-11-07 03:17:50,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:17:50,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-11-07 03:17:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:17:50,877 INFO L225 Difference]: With dead ends: 10955 [2018-11-07 03:17:50,878 INFO L226 Difference]: Without dead ends: 7274 [2018-11-07 03:17:50,895 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:17:50,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2018-11-07 03:17:51,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7167. [2018-11-07 03:17:51,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2018-11-07 03:17:51,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10519 transitions. [2018-11-07 03:17:51,083 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10519 transitions. Word has length 134 [2018-11-07 03:17:51,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:17:51,083 INFO L480 AbstractCegarLoop]: Abstraction has 7167 states and 10519 transitions. [2018-11-07 03:17:51,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:17:51,084 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10519 transitions. [2018-11-07 03:17:51,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-07 03:17:51,088 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:17:51,088 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:17:51,088 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:17:51,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:17:51,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1690050436, now seen corresponding path program 1 times [2018-11-07 03:17:51,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:17:51,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:51,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:17:51,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:51,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:17:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:17:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:17:51,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:17:51,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:17:51,284 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:17:51,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:17:51,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:17:51,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:17:51,287 INFO L87 Difference]: Start difference. First operand 7167 states and 10519 transitions. Second operand 3 states. [2018-11-07 03:17:58,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:17:58,044 INFO L93 Difference]: Finished difference Result 20996 states and 32087 transitions. [2018-11-07 03:17:58,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:17:58,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2018-11-07 03:17:58,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:17:58,124 INFO L225 Difference]: With dead ends: 20996 [2018-11-07 03:17:58,124 INFO L226 Difference]: Without dead ends: 13835 [2018-11-07 03:17:58,164 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:17:58,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13835 states. [2018-11-07 03:17:58,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13835 to 13826. [2018-11-07 03:17:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13826 states. [2018-11-07 03:17:58,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13826 states to 13826 states and 19425 transitions. [2018-11-07 03:17:58,491 INFO L78 Accepts]: Start accepts. Automaton has 13826 states and 19425 transitions. Word has length 178 [2018-11-07 03:17:58,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:17:58,492 INFO L480 AbstractCegarLoop]: Abstraction has 13826 states and 19425 transitions. [2018-11-07 03:17:58,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:17:58,492 INFO L276 IsEmpty]: Start isEmpty. Operand 13826 states and 19425 transitions. [2018-11-07 03:17:58,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-11-07 03:17:58,499 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:17:58,499 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:17:58,500 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:17:58,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:17:58,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1829231100, now seen corresponding path program 1 times [2018-11-07 03:17:58,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:17:58,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:58,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:17:58,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:17:58,502 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:17:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:17:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:17:58,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:17:58,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:17:58,819 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:17:58,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:17:58,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:17:58,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:17:58,820 INFO L87 Difference]: Start difference. First operand 13826 states and 19425 transitions. Second operand 4 states. [2018-11-07 03:18:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:18:07,205 INFO L93 Difference]: Finished difference Result 31683 states and 44323 transitions. [2018-11-07 03:18:07,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:18:07,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2018-11-07 03:18:07,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:18:07,264 INFO L225 Difference]: With dead ends: 31683 [2018-11-07 03:18:07,265 INFO L226 Difference]: Without dead ends: 17863 [2018-11-07 03:18:07,324 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 [2018-11-07 03:18:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17863 states. [2018-11-07 03:18:07,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17863 to 17862. [2018-11-07 03:18:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17862 states. [2018-11-07 03:18:07,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17862 states to 17862 states and 22157 transitions. [2018-11-07 03:18:07,664 INFO L78 Accepts]: Start accepts. Automaton has 17862 states and 22157 transitions. Word has length 183 [2018-11-07 03:18:07,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:18:07,665 INFO L480 AbstractCegarLoop]: Abstraction has 17862 states and 22157 transitions. [2018-11-07 03:18:07,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:18:07,665 INFO L276 IsEmpty]: Start isEmpty. Operand 17862 states and 22157 transitions. [2018-11-07 03:18:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-07 03:18:07,674 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:18:07,674 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:18:07,675 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:18:07,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:18:07,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1374780002, now seen corresponding path program 1 times [2018-11-07 03:18:07,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:18:07,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:18:07,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:18:07,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:18:07,679 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:18:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:18:08,007 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:18:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:18:08,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:18:08,380 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:18:08,382 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-11-07 03:18:08,384 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3023], [3025], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3120], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 03:18:08,484 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:18:08,485 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:18:11,043 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:18:16,282 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:18:16,284 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 03:18:16,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:18:16,295 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:18:22,084 INFO L227 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 71.85% of their original sizes. [2018-11-07 03:18:22,085 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:18:23,654 INFO L415 sIntCurrentIteration]: We unified 252 AI predicates to 252 [2018-11-07 03:18:23,655 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:18:23,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:18:23,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 03:18:23,656 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:18:23,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 03:18:23,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 03:18:23,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 03:18:23,657 INFO L87 Difference]: Start difference. First operand 17862 states and 22157 transitions. Second operand 11 states. Received shutdown request... [2018-11-07 03:20:37,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 03:20:37,568 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:20:37,575 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:20:37,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:20:37 BoogieIcfgContainer [2018-11-07 03:20:37,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:20:37,578 INFO L168 Benchmark]: Toolchain (without parser) took 219642.97 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -848.8 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 03:20:37,583 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:20:37,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2528.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 03:20:37,584 INFO L168 Benchmark]: Boogie Procedure Inliner took 407.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:20:37,588 INFO L168 Benchmark]: Boogie Preprocessor took 281.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:20:37,589 INFO L168 Benchmark]: RCFGBuilder took 9725.63 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 160.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.1 MB). Peak memory consumption was 662.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:20:37,593 INFO L168 Benchmark]: TraceAbstraction took 206694.32 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -71.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 03:20:37,604 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2528.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 407.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 281.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9725.63 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 160.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.1 MB). Peak memory consumption was 662.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206694.32 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -71.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 177]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 177). Cancelled while BasicCegarLoop was constructing difference of abstraction (17862states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (3256 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 206.6s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 187.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5030 SDtfs, 12746 SDslu, 2411 SDs, 0 SdLazy, 23216 SolverSat, 5320 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 138.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 289 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17862occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9963125763125763 AbsIntWeakeningRatio, 0.11904761904761904 AbsIntAvgWeakeningVarsNumRemoved, 27.13888888888889 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 989 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 942 NumberOfCodeBlocks, 942 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 936 ConstructedInterpolants, 0 QuantifiedInterpolants, 380444 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 398/400 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown