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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 07:14:24,904 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 07:14:24,909 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 07:14:24,924 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 07:14:24,924 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 07:14:24,925 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 07:14:24,926 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 07:14:24,928 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 07:14:24,930 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 07:14:24,931 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 07:14:24,932 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 07:14:24,932 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 07:14:24,933 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 07:14:24,934 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 07:14:24,935 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 07:14:24,936 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 07:14:24,937 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 07:14:24,939 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 07:14:24,941 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 07:14:24,943 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 07:14:24,944 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 07:14:24,945 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 07:14:24,948 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 07:14:24,948 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 07:14:24,949 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 07:14:24,951 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 07:14:24,952 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 07:14:24,956 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 07:14:24,958 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 07:14:24,959 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 07:14:24,960 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 07:14:24,960 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 07:14:24,960 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 07:14:24,962 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 07:14:24,964 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 07:14:24,965 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 07:14:24,965 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 07:14:24,994 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 07:14:24,995 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 07:14:24,996 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 07:14:24,996 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 07:14:24,996 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 07:14:24,996 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 07:14:24,996 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 07:14:24,998 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 07:14:24,998 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 07:14:24,998 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 07:14:24,998 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 07:14:24,998 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 07:14:24,998 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 07:14:24,999 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 07:14:24,999 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 07:14:25,000 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 07:14:25,000 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 07:14:25,000 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 07:14:25,000 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 07:14:25,000 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 07:14:25,001 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 07:14:25,001 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 07:14:25,001 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 07:14:25,001 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 07:14:25,001 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 07:14:25,002 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 07:14:25,002 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 07:14:25,002 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 07:14:25,003 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 07:14:25,003 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 07:14:25,003 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 07:14:25,003 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 07:14:25,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 07:14:25,004 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 07:14:25,004 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 07:14:25,004 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 07:14:25,049 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 07:14:25,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 07:14:25,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 07:14:25,073 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 07:14:25,073 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 07:14:25,074 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label21_true-unreach-call.c [2018-11-07 07:14:25,139 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d816b48/681f9ff3bbcb4450997d07ce51adb5aa/FLAGd1f70a014 [2018-11-07 07:14:25,840 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 07:14:25,842 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label21_true-unreach-call.c [2018-11-07 07:14:25,865 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d816b48/681f9ff3bbcb4450997d07ce51adb5aa/FLAGd1f70a014 [2018-11-07 07:14:25,886 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d816b48/681f9ff3bbcb4450997d07ce51adb5aa [2018-11-07 07:14:25,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 07:14:25,899 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 07:14:25,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 07:14:25,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 07:14:25,905 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 07:14:25,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:14:25" (1/1) ... [2018-11-07 07:14:25,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f02a909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:25, skipping insertion in model container [2018-11-07 07:14:25,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:14:25" (1/1) ... [2018-11-07 07:14:25,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 07:14:26,036 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 07:14:26,857 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:14:26,862 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 07:14:27,118 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:14:27,141 INFO L193 MainTranslator]: Completed translation [2018-11-07 07:14:27,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:27 WrapperNode [2018-11-07 07:14:27,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 07:14:27,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 07:14:27,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 07:14:27,143 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 07:14:27,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:27" (1/1) ... [2018-11-07 07:14:27,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:27" (1/1) ... [2018-11-07 07:14:27,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 07:14:27,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 07:14:27,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 07:14:27,350 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 07:14:27,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:27" (1/1) ... [2018-11-07 07:14:27,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:27" (1/1) ... [2018-11-07 07:14:27,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:27" (1/1) ... [2018-11-07 07:14:27,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:27" (1/1) ... [2018-11-07 07:14:27,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:27" (1/1) ... [2018-11-07 07:14:27,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:27" (1/1) ... [2018-11-07 07:14:27,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:27" (1/1) ... [2018-11-07 07:14:27,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 07:14:27,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 07:14:27,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 07:14:27,559 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 07:14:27,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:27" (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 07:14:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 07:14:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 07:14:27,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 07:14:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 07:14:27,637 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 07:14:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 07:14:27,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 07:14:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 07:14:27,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 07:14:32,612 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 07:14:32,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:14:32 BoogieIcfgContainer [2018-11-07 07:14:32,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 07:14:32,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 07:14:32,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 07:14:32,619 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 07:14:32,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:14:25" (1/3) ... [2018-11-07 07:14:32,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511d44c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:14:32, skipping insertion in model container [2018-11-07 07:14:32,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:14:27" (2/3) ... [2018-11-07 07:14:32,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511d44c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:14:32, skipping insertion in model container [2018-11-07 07:14:32,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:14:32" (3/3) ... [2018-11-07 07:14:32,624 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label21_true-unreach-call.c [2018-11-07 07:14:32,635 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 07:14:32,646 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 07:14:32,665 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 07:14:32,708 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 07:14:32,708 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 07:14:32,708 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 07:14:32,708 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 07:14:32,709 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 07:14:32,709 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 07:14:32,709 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 07:14:32,709 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 07:14:32,752 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 07:14:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-07 07:14:32,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:14:32,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:32,779 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:14:32,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:32,786 INFO L82 PathProgramCache]: Analyzing trace with hash 79824004, now seen corresponding path program 1 times [2018-11-07 07:14:32,789 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:14:32,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:32,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:32,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:32,844 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:14:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:33,775 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:14:33,999 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 07:14:34,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:14:34,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 07:14:34,002 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:14:34,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:14:34,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:14:34,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:14:34,030 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 07:14:35,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:14:35,997 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-11-07 07:14:35,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:14:35,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2018-11-07 07:14:36,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:14:36,024 INFO L225 Difference]: With dead ends: 848 [2018-11-07 07:14:36,025 INFO L226 Difference]: Without dead ends: 534 [2018-11-07 07:14:36,033 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:14:36,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-11-07 07:14:36,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-11-07 07:14:36,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-11-07 07:14:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-11-07 07:14:36,146 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 209 [2018-11-07 07:14:36,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:14:36,147 INFO L480 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-11-07 07:14:36,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:14:36,148 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-11-07 07:14:36,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-11-07 07:14:36,172 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:14:36,172 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 07:14:36,175 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:14:36,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:36,175 INFO L82 PathProgramCache]: Analyzing trace with hash 909218688, now seen corresponding path program 1 times [2018-11-07 07:14:36,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:14:36,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:36,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:36,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:36,179 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:14:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:14:36,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:14:36,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 07:14:36,768 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:14:36,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 07:14:36,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 07:14:36,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 07:14:36,773 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-11-07 07:14:38,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:14:38,926 INFO L93 Difference]: Finished difference Result 1493 states and 2512 transitions. [2018-11-07 07:14:38,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 07:14:38,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2018-11-07 07:14:38,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:14:38,937 INFO L225 Difference]: With dead ends: 1493 [2018-11-07 07:14:38,937 INFO L226 Difference]: Without dead ends: 967 [2018-11-07 07:14:38,941 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 07:14:38,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-11-07 07:14:38,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 951. [2018-11-07 07:14:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2018-11-07 07:14:39,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1540 transitions. [2018-11-07 07:14:39,003 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1540 transitions. Word has length 222 [2018-11-07 07:14:39,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:14:39,004 INFO L480 AbstractCegarLoop]: Abstraction has 951 states and 1540 transitions. [2018-11-07 07:14:39,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 07:14:39,004 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1540 transitions. [2018-11-07 07:14:39,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-11-07 07:14:39,011 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:14:39,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:39,011 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:14:39,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:39,012 INFO L82 PathProgramCache]: Analyzing trace with hash 262134433, now seen corresponding path program 1 times [2018-11-07 07:14:39,012 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:14:39,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:39,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:39,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:39,014 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:14:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:14:39,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:14:39,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:14:39,306 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:14:39,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:14:39,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:14:39,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:14:39,307 INFO L87 Difference]: Start difference. First operand 951 states and 1540 transitions. Second operand 6 states. [2018-11-07 07:14:42,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:14:42,477 INFO L93 Difference]: Finished difference Result 2784 states and 4694 transitions. [2018-11-07 07:14:42,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 07:14:42,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 237 [2018-11-07 07:14:42,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:14:42,492 INFO L225 Difference]: With dead ends: 2784 [2018-11-07 07:14:42,493 INFO L226 Difference]: Without dead ends: 1839 [2018-11-07 07:14:42,497 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 [2018-11-07 07:14:42,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2018-11-07 07:14:42,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1809. [2018-11-07 07:14:42,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2018-11-07 07:14:42,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2782 transitions. [2018-11-07 07:14:42,566 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2782 transitions. Word has length 237 [2018-11-07 07:14:42,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:14:42,567 INFO L480 AbstractCegarLoop]: Abstraction has 1809 states and 2782 transitions. [2018-11-07 07:14:42,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:14:42,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2782 transitions. [2018-11-07 07:14:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-07 07:14:42,578 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:14:42,578 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:14:42,578 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:14:42,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:42,579 INFO L82 PathProgramCache]: Analyzing trace with hash -789776746, now seen corresponding path program 1 times [2018-11-07 07:14:42,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:14:42,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:42,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:14:42,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:14:42,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:14:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:14:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:14:43,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:14:43,061 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:14:43,062 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-11-07 07:14:43,065 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1133], [1135], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:14:43,159 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:14:43,160 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:14:45,265 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:14:45,267 INFO L272 AbstractInterpreter]: Visited 213 different actions 420 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:14:45,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:14:45,311 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:14:46,569 INFO L227 lantSequenceWeakener]: Weakened 253 states. On average, predicates are now at 75.09% of their original sizes. [2018-11-07 07:14:46,569 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:14:47,914 INFO L415 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-11-07 07:14:47,914 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:14:47,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:14:47,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-07 07:14:47,916 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:14:47,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 07:14:47,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 07:14:47,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-07 07:14:47,917 INFO L87 Difference]: Start difference. First operand 1809 states and 2782 transitions. Second operand 20 states. [2018-11-07 07:15:18,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:15:18,803 INFO L93 Difference]: Finished difference Result 4034 states and 6121 transitions. [2018-11-07 07:15:18,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 07:15:18,803 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 256 [2018-11-07 07:15:18,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:15:18,814 INFO L225 Difference]: With dead ends: 4034 [2018-11-07 07:15:18,815 INFO L226 Difference]: Without dead ends: 2231 [2018-11-07 07:15:18,821 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 264 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2018-11-07 07:15:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2018-11-07 07:15:18,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2228. [2018-11-07 07:15:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2018-11-07 07:15:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3229 transitions. [2018-11-07 07:15:18,886 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3229 transitions. Word has length 256 [2018-11-07 07:15:18,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:15:18,887 INFO L480 AbstractCegarLoop]: Abstraction has 2228 states and 3229 transitions. [2018-11-07 07:15:18,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 07:15:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3229 transitions. [2018-11-07 07:15:18,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-07 07:15:18,897 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:15:18,898 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 07:15:18,898 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:15:18,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:15:18,899 INFO L82 PathProgramCache]: Analyzing trace with hash 182111589, now seen corresponding path program 1 times [2018-11-07 07:15:18,899 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:15:18,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:18,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:15:18,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:18,901 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:15:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:15:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:15:19,430 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:15:19,434 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:15:19,434 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-11-07 07:15:19,435 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1133], [1135], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:15:19,446 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:15:19,447 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:15:20,301 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:15:20,301 INFO L272 AbstractInterpreter]: Visited 213 different actions 419 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:15:20,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:15:20,309 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:15:21,004 INFO L227 lantSequenceWeakener]: Weakened 251 states. On average, predicates are now at 77.56% of their original sizes. [2018-11-07 07:15:21,004 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:15:21,242 INFO L415 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-11-07 07:15:21,242 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:15:21,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:15:21,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-07 07:15:21,243 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:15:21,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 07:15:21,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 07:15:21,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-11-07 07:15:21,244 INFO L87 Difference]: Start difference. First operand 2228 states and 3229 transitions. Second operand 15 states. [2018-11-07 07:15:51,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:15:51,624 INFO L93 Difference]: Finished difference Result 5311 states and 7950 transitions. [2018-11-07 07:15:51,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 07:15:51,624 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 256 [2018-11-07 07:15:51,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:15:51,642 INFO L225 Difference]: With dead ends: 5311 [2018-11-07 07:15:51,642 INFO L226 Difference]: Without dead ends: 3508 [2018-11-07 07:15:51,650 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 264 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2018-11-07 07:15:51,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2018-11-07 07:15:51,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 3501. [2018-11-07 07:15:51,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3501 states. [2018-11-07 07:15:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4910 transitions. [2018-11-07 07:15:51,743 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4910 transitions. Word has length 256 [2018-11-07 07:15:51,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:15:51,744 INFO L480 AbstractCegarLoop]: Abstraction has 3501 states and 4910 transitions. [2018-11-07 07:15:51,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 07:15:51,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4910 transitions. [2018-11-07 07:15:51,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-11-07 07:15:51,758 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:15:51,758 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:51,759 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:15:51,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:15:51,759 INFO L82 PathProgramCache]: Analyzing trace with hash -337628274, now seen corresponding path program 1 times [2018-11-07 07:15:51,759 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:15:51,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:51,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:15:51,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:51,761 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:15:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:15:52,374 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-07 07:15:52,594 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 07:15:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 07:15:53,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:15:53,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:15:53,093 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:15:53,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:15:53,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:15:53,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:15:53,094 INFO L87 Difference]: Start difference. First operand 3501 states and 4910 transitions. Second operand 6 states. [2018-11-07 07:15:55,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:15:55,321 INFO L93 Difference]: Finished difference Result 7181 states and 10425 transitions. [2018-11-07 07:15:55,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 07:15:55,322 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 257 [2018-11-07 07:15:55,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:15:55,341 INFO L225 Difference]: With dead ends: 7181 [2018-11-07 07:15:55,342 INFO L226 Difference]: Without dead ends: 3864 [2018-11-07 07:15:55,354 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:15:55,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2018-11-07 07:15:55,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 3743. [2018-11-07 07:15:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3743 states. [2018-11-07 07:15:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 5205 transitions. [2018-11-07 07:15:55,445 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 5205 transitions. Word has length 257 [2018-11-07 07:15:55,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:15:55,445 INFO L480 AbstractCegarLoop]: Abstraction has 3743 states and 5205 transitions. [2018-11-07 07:15:55,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:15:55,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 5205 transitions. [2018-11-07 07:15:55,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-11-07 07:15:55,464 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:15:55,465 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:15:55,466 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:15:55,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:15:55,466 INFO L82 PathProgramCache]: Analyzing trace with hash 302981455, now seen corresponding path program 1 times [2018-11-07 07:15:55,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:15:55,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:55,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:15:55,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:15:55,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:15:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:15:55,813 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:15:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 158 proven. 44 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-11-07 07:15:55,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:15:55,924 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:15:55,925 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 341 with the following transitions: [2018-11-07 07:15:55,925 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1133], [1135], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:15:55,934 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:15:55,934 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:15:57,191 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:15:57,191 INFO L272 AbstractInterpreter]: Visited 216 different actions 644 times. Merged at 8 different actions 20 times. Never widened. Found 5 fixpoints after 4 different actions. Largest state had 88 variables. [2018-11-07 07:15:57,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:15:57,201 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:15:57,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:15:57,202 INFO L194 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 [2018-11-07 07:15:57,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:15:57,212 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:15:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:15:57,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:15:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-11-07 07:15:57,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:15:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 171 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-11-07 07:15:58,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:15:58,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 07:15:58,733 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:15:58,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 07:15:58,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 07:15:58,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-11-07 07:15:58,736 INFO L87 Difference]: Start difference. First operand 3743 states and 5205 transitions. Second operand 10 states. [2018-11-07 07:16:03,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:16:03,820 INFO L93 Difference]: Finished difference Result 9647 states and 13723 transitions. [2018-11-07 07:16:03,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 07:16:03,821 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 340 [2018-11-07 07:16:03,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:16:03,848 INFO L225 Difference]: With dead ends: 9647 [2018-11-07 07:16:03,848 INFO L226 Difference]: Without dead ends: 6331 [2018-11-07 07:16:03,866 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 686 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2018-11-07 07:16:03,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6331 states. [2018-11-07 07:16:04,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6331 to 6319. [2018-11-07 07:16:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6319 states. [2018-11-07 07:16:04,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6319 states to 6319 states and 8008 transitions. [2018-11-07 07:16:04,030 INFO L78 Accepts]: Start accepts. Automaton has 6319 states and 8008 transitions. Word has length 340 [2018-11-07 07:16:04,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:16:04,030 INFO L480 AbstractCegarLoop]: Abstraction has 6319 states and 8008 transitions. [2018-11-07 07:16:04,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 07:16:04,031 INFO L276 IsEmpty]: Start isEmpty. Operand 6319 states and 8008 transitions. [2018-11-07 07:16:04,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-11-07 07:16:04,058 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:16:04,058 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-07 07:16:04,059 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:16:04,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:04,059 INFO L82 PathProgramCache]: Analyzing trace with hash -815899765, now seen corresponding path program 1 times [2018-11-07 07:16:04,059 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:16:04,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:04,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:04,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:04,061 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:16:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 187 proven. 58 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-07 07:16:04,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:16:04,756 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:16:04,756 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 373 with the following transitions: [2018-11-07 07:16:04,757 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [334], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1133], [1135], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:16:04,764 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:16:04,764 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:16:07,233 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:16:07,233 INFO L272 AbstractInterpreter]: Visited 216 different actions 864 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 4 different actions. Largest state had 88 variables. [2018-11-07 07:16:07,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:07,270 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:16:07,270 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:16:07,270 INFO L194 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 [2018-11-07 07:16:07,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:07,283 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:16:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:07,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:16:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 202 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-11-07 07:16:07,975 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:16:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 202 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-11-07 07:16:08,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:16:08,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 07:16:08,523 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:16:08,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 07:16:08,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 07:16:08,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-07 07:16:08,525 INFO L87 Difference]: Start difference. First operand 6319 states and 8008 transitions. Second operand 9 states. [2018-11-07 07:16:18,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:16:18,021 INFO L93 Difference]: Finished difference Result 32717 states and 44086 transitions. [2018-11-07 07:16:18,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-07 07:16:18,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 372 [2018-11-07 07:16:18,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:16:18,113 INFO L225 Difference]: With dead ends: 32717 [2018-11-07 07:16:18,114 INFO L226 Difference]: Without dead ends: 26485 [2018-11-07 07:16:18,161 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=368, Invalid=1524, Unknown=0, NotChecked=0, Total=1892 [2018-11-07 07:16:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26485 states. [2018-11-07 07:16:18,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26485 to 26170. [2018-11-07 07:16:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26170 states. [2018-11-07 07:16:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26170 states to 26170 states and 31753 transitions. [2018-11-07 07:16:18,797 INFO L78 Accepts]: Start accepts. Automaton has 26170 states and 31753 transitions. Word has length 372 [2018-11-07 07:16:18,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:16:18,797 INFO L480 AbstractCegarLoop]: Abstraction has 26170 states and 31753 transitions. [2018-11-07 07:16:18,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 07:16:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 26170 states and 31753 transitions. [2018-11-07 07:16:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-11-07 07:16:18,883 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:16:18,883 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 07:16:18,884 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:16:18,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:18,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2130754020, now seen corresponding path program 1 times [2018-11-07 07:16:18,884 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:16:18,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:18,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:18,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:18,885 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:16:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 192 proven. 14 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 07:16:19,492 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:16:19,493 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:16:19,493 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 399 with the following transitions: [2018-11-07 07:16:19,493 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [20], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [268], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1133], [1135], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:16:19,499 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:16:19,499 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:16:21,517 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:16:21,517 INFO L272 AbstractInterpreter]: Visited 218 different actions 872 times. Merged at 9 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:16:21,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:21,524 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:16:21,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:16:21,524 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 07:16:21,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:21,544 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:16:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:21,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:16:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 271 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-07 07:16:22,365 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:16:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 271 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-07 07:16:23,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:16:23,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-11-07 07:16:23,338 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:16:23,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 07:16:23,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 07:16:23,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:16:23,340 INFO L87 Difference]: Start difference. First operand 26170 states and 31753 transitions. Second operand 8 states. [2018-11-07 07:16:27,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:16:27,547 INFO L93 Difference]: Finished difference Result 85033 states and 106337 transitions. [2018-11-07 07:16:27,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 07:16:27,548 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 398 [2018-11-07 07:16:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:16:27,786 INFO L225 Difference]: With dead ends: 85033 [2018-11-07 07:16:27,786 INFO L226 Difference]: Without dead ends: 57781 [2018-11-07 07:16:27,895 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 801 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2018-11-07 07:16:27,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57781 states. [2018-11-07 07:16:29,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57781 to 56022. [2018-11-07 07:16:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56022 states. [2018-11-07 07:16:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56022 states to 56022 states and 65064 transitions. [2018-11-07 07:16:29,183 INFO L78 Accepts]: Start accepts. Automaton has 56022 states and 65064 transitions. Word has length 398 [2018-11-07 07:16:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:16:29,183 INFO L480 AbstractCegarLoop]: Abstraction has 56022 states and 65064 transitions. [2018-11-07 07:16:29,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 07:16:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 56022 states and 65064 transitions. [2018-11-07 07:16:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-11-07 07:16:29,277 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:16:29,278 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:29,278 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:16:29,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:29,278 INFO L82 PathProgramCache]: Analyzing trace with hash -144770441, now seen corresponding path program 1 times [2018-11-07 07:16:29,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:16:29,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:29,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:29,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:29,281 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:16:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:29,997 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 07:16:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 256 proven. 81 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-11-07 07:16:30,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:16:30,319 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:16:30,320 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 405 with the following transitions: [2018-11-07 07:16:30,320 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1133], [1135], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:16:30,327 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:16:30,327 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:16:32,310 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:16:32,311 INFO L272 AbstractInterpreter]: Visited 217 different actions 652 times. Merged at 9 different actions 25 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 07:16:32,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:32,348 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:16:32,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:16:32,349 INFO L194 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 [2018-11-07 07:16:32,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:32,361 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:16:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:32,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:16:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 365 proven. 6 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2018-11-07 07:16:32,933 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:16:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 367 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2018-11-07 07:16:33,156 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:16:33,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 07:16:33,156 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:16:33,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 07:16:33,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 07:16:33,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:16:33,157 INFO L87 Difference]: Start difference. First operand 56022 states and 65064 transitions. Second operand 9 states. [2018-11-07 07:16:37,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:16:37,021 INFO L93 Difference]: Finished difference Result 113277 states and 133431 transitions. [2018-11-07 07:16:37,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 07:16:37,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 404 [2018-11-07 07:16:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:16:37,243 INFO L225 Difference]: With dead ends: 113277 [2018-11-07 07:16:37,243 INFO L226 Difference]: Without dead ends: 73165 [2018-11-07 07:16:37,338 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 815 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2018-11-07 07:16:37,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73165 states. [2018-11-07 07:16:38,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73165 to 72017. [2018-11-07 07:16:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72017 states. [2018-11-07 07:16:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72017 states to 72017 states and 81488 transitions. [2018-11-07 07:16:38,638 INFO L78 Accepts]: Start accepts. Automaton has 72017 states and 81488 transitions. Word has length 404 [2018-11-07 07:16:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:16:38,638 INFO L480 AbstractCegarLoop]: Abstraction has 72017 states and 81488 transitions. [2018-11-07 07:16:38,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 07:16:38,639 INFO L276 IsEmpty]: Start isEmpty. Operand 72017 states and 81488 transitions. [2018-11-07 07:16:38,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-11-07 07:16:38,710 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:16:38,710 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:16:38,710 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:16:38,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:38,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1277955696, now seen corresponding path program 1 times [2018-11-07 07:16:38,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:16:38,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:38,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:16:38,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:16:38,712 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:16:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:16:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 231 proven. 34 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-11-07 07:16:39,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:16:39,356 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:16:39,356 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 412 with the following transitions: [2018-11-07 07:16:39,357 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [268], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1133], [1135], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:16:39,363 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:16:39,363 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:16:40,946 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:16:40,946 INFO L272 AbstractInterpreter]: Visited 214 different actions 637 times. Merged at 7 different actions 17 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:16:40,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:16:40,948 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:16:42,291 INFO L227 lantSequenceWeakener]: Weakened 408 states. On average, predicates are now at 75.6% of their original sizes. [2018-11-07 07:16:42,291 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:16:42,731 INFO L415 sIntCurrentIteration]: We unified 410 AI predicates to 410 [2018-11-07 07:16:42,732 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:16:42,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:16:42,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-07 07:16:42,732 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:16:42,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 07:16:42,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 07:16:42,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2018-11-07 07:16:42,734 INFO L87 Difference]: Start difference. First operand 72017 states and 81488 transitions. Second operand 20 states. [2018-11-07 07:17:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:17:08,573 INFO L93 Difference]: Finished difference Result 170163 states and 193977 transitions. [2018-11-07 07:17:08,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 07:17:08,574 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 411 [2018-11-07 07:17:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:17:08,955 INFO L225 Difference]: With dead ends: 170163 [2018-11-07 07:17:08,955 INFO L226 Difference]: Without dead ends: 98785 [2018-11-07 07:17:09,090 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 419 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2018-11-07 07:17:09,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98785 states. [2018-11-07 07:17:10,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98785 to 98240. [2018-11-07 07:17:10,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98240 states. [2018-11-07 07:17:10,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98240 states to 98240 states and 111557 transitions. [2018-11-07 07:17:10,561 INFO L78 Accepts]: Start accepts. Automaton has 98240 states and 111557 transitions. Word has length 411 [2018-11-07 07:17:10,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:17:10,562 INFO L480 AbstractCegarLoop]: Abstraction has 98240 states and 111557 transitions. [2018-11-07 07:17:10,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 07:17:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 98240 states and 111557 transitions. [2018-11-07 07:17:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2018-11-07 07:17:10,652 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:17:10,652 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:10,653 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:17:10,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:17:10,653 INFO L82 PathProgramCache]: Analyzing trace with hash 2053220307, now seen corresponding path program 1 times [2018-11-07 07:17:10,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:17:10,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:17:10,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:17:10,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:17:10,654 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:17:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:17:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 352 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 07:17:11,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:17:11,938 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:17:11,939 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 448 with the following transitions: [2018-11-07 07:17:11,939 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [409], [414], [416], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [460], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1133], [1135], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:17:11,945 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:17:11,945 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:17:12,553 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:17:12,554 INFO L272 AbstractInterpreter]: Visited 214 different actions 422 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 07:17:12,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:17:12,566 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:17:13,382 INFO L227 lantSequenceWeakener]: Weakened 442 states. On average, predicates are now at 73.56% of their original sizes. [2018-11-07 07:17:13,382 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:17:13,673 INFO L415 sIntCurrentIteration]: We unified 446 AI predicates to 446 [2018-11-07 07:17:13,673 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:17:13,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:17:13,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 07:17:13,674 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:17:13,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 07:17:13,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 07:17:13,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-11-07 07:17:13,675 INFO L87 Difference]: Start difference. First operand 98240 states and 111557 transitions. Second operand 18 states. [2018-11-07 07:17:34,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:17:34,089 INFO L93 Difference]: Finished difference Result 197108 states and 223850 transitions. [2018-11-07 07:17:34,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 07:17:34,090 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 447 [2018-11-07 07:17:34,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:17:34,391 INFO L225 Difference]: With dead ends: 197108 [2018-11-07 07:17:34,391 INFO L226 Difference]: Without dead ends: 99509 [2018-11-07 07:17:34,544 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 455 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2018-11-07 07:17:34,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99509 states. [2018-11-07 07:17:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99509 to 99499. [2018-11-07 07:17:36,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99499 states. [2018-11-07 07:17:36,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99499 states to 99499 states and 112901 transitions. [2018-11-07 07:17:36,454 INFO L78 Accepts]: Start accepts. Automaton has 99499 states and 112901 transitions. Word has length 447 [2018-11-07 07:17:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:17:36,454 INFO L480 AbstractCegarLoop]: Abstraction has 99499 states and 112901 transitions. [2018-11-07 07:17:36,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 07:17:36,454 INFO L276 IsEmpty]: Start isEmpty. Operand 99499 states and 112901 transitions. [2018-11-07 07:17:36,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-11-07 07:17:36,541 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:17:36,541 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:17:36,542 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:17:36,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:17:36,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1477648016, now seen corresponding path program 1 times [2018-11-07 07:17:36,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:17:36,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:17:36,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:17:36,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:17:36,544 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:17:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:17:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 247 proven. 144 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-07 07:17:37,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:17:37,193 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:17:37,193 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 460 with the following transitions: [2018-11-07 07:17:37,193 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [409], [414], [416], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [460], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1133], [1135], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 07:17:37,199 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:17:37,199 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:17:37,979 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 07:17:37,980 INFO L272 AbstractInterpreter]: Visited 215 different actions 641 times. Merged at 7 different actions 18 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 07:17:37,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:17:37,988 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 07:17:43,233 INFO L227 lantSequenceWeakener]: Weakened 454 states. On average, predicates are now at 73.58% of their original sizes. [2018-11-07 07:17:43,233 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 07:17:43,585 INFO L415 sIntCurrentIteration]: We unified 458 AI predicates to 458 [2018-11-07 07:17:43,585 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 07:17:43,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 07:17:43,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [9] total 29 [2018-11-07 07:17:43,586 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:17:43,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 07:17:43,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 07:17:43,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2018-11-07 07:17:43,588 INFO L87 Difference]: Start difference. First operand 99499 states and 112901 transitions. Second operand 22 states. Received shutdown request... [2018-11-07 07:18:03,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 07:18:03,785 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 07:18:03,790 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 07:18:03,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:18:03 BoogieIcfgContainer [2018-11-07 07:18:03,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 07:18:03,791 INFO L168 Benchmark]: Toolchain (without parser) took 217893.02 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 07:18:03,793 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-11-07 07:18:03,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1242.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 07:18:03,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 205.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -850.6 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2018-11-07 07:18:03,795 INFO L168 Benchmark]: Boogie Preprocessor took 209.04 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 07:18:03,796 INFO L168 Benchmark]: RCFGBuilder took 5054.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 260.7 MB). Peak memory consumption was 260.7 MB. Max. memory is 7.1 GB. [2018-11-07 07:18:03,796 INFO L168 Benchmark]: TraceAbstraction took 211175.54 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -621.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 07:18:03,801 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1242.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 205.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -850.6 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 209.04 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5054.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 260.7 MB). Peak memory consumption was 260.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211175.54 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -621.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1641]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1641). Cancelled while BasicCegarLoop was constructing difference of abstraction (99499states) and FLOYD_HOARE automaton (currently 13 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (37600 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 211.0s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 161.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2744 SDtfs, 27993 SDslu, 5667 SDs, 0 SdLazy, 30591 SolverSat, 5052 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.1s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 5087 GetRequests, 4824 SyntacticMatches, 17 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99499occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.9s AbstIntTime, 9 AbstIntIterations, 5 AbstIntStrong, 0.9991749342052194 AbsIntWeakeningRatio, 0.1962719298245614 AbsIntAvgWeakeningVarsNumRemoved, 57.47587719298246 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 3968 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 5782 NumberOfCodeBlocks, 5782 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7275 ConstructedInterpolants, 0 QuantifiedInterpolants, 6302323 SizeOfPredicates, 2 NumberOfNonLiveVariables, 6459 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 21 InterpolantComputations, 4 PerfectInterpolantSequences, 4936/5384 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown