java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 21:16:03,905 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 21:16:03,910 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 21:16:03,925 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 21:16:03,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 21:16:03,929 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 21:16:03,930 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 21:16:03,933 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 21:16:03,935 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 21:16:03,936 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 21:16:03,939 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 21:16:03,939 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 21:16:03,940 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 21:16:03,941 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 21:16:03,945 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 21:16:03,945 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 21:16:03,947 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 21:16:03,951 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 21:16:03,960 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 21:16:03,962 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 21:16:03,966 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 21:16:03,968 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 21:16:03,972 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 21:16:03,989 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 21:16:04,013 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 21:16:04,014 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 21:16:04,015 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 21:16:04,015 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 21:16:04,015 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 21:16:04,015 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 21:16:04,016 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 21:16:04,016 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 21:16:04,016 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 21:16:04,016 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 21:16:04,016 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 21:16:04,017 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 21:16:04,017 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 21:16:04,018 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 21:16:04,019 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 21:16:04,019 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 21:16:04,019 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 21:16:04,019 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 21:16:04,019 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 21:16:04,020 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 21:16:04,021 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 21:16:04,021 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 21:16:04,021 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 21:16:04,021 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 21:16:04,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:16:04,022 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 21:16:04,022 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 21:16:04,022 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 21:16:04,022 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 21:16:04,022 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 21:16:04,023 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 21:16:04,023 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 21:16:04,023 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 21:16:04,024 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 21:16:04,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 21:16:04,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 21:16:04,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 21:16:04,108 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 21:16:04,108 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 21:16:04,109 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label31_false-unreach-call.c [2018-10-23 21:16:04,169 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/680429bd9/bc556a1b21eb40caa389945d3ac71f04/FLAG3df0cfee8 [2018-10-23 21:16:04,817 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 21:16:04,818 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label31_false-unreach-call.c [2018-10-23 21:16:04,838 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/680429bd9/bc556a1b21eb40caa389945d3ac71f04/FLAG3df0cfee8 [2018-10-23 21:16:04,858 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/680429bd9/bc556a1b21eb40caa389945d3ac71f04 [2018-10-23 21:16:04,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 21:16:04,871 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 21:16:04,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 21:16:04,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 21:16:04,876 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 21:16:04,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:16:04" (1/1) ... [2018-10-23 21:16:04,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7897d110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:04, skipping insertion in model container [2018-10-23 21:16:04,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:16:04" (1/1) ... [2018-10-23 21:16:04,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 21:16:04,996 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 21:16:05,781 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:16:05,786 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 21:16:06,036 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:16:06,058 INFO L193 MainTranslator]: Completed translation [2018-10-23 21:16:06,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:06 WrapperNode [2018-10-23 21:16:06,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 21:16:06,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 21:16:06,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 21:16:06,060 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 21:16:06,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:06" (1/1) ... [2018-10-23 21:16:06,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:06" (1/1) ... [2018-10-23 21:16:06,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 21:16:06,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 21:16:06,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 21:16:06,373 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 21:16:06,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:06" (1/1) ... [2018-10-23 21:16:06,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:06" (1/1) ... [2018-10-23 21:16:06,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:06" (1/1) ... [2018-10-23 21:16:06,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:06" (1/1) ... [2018-10-23 21:16:06,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:06" (1/1) ... [2018-10-23 21:16:06,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:06" (1/1) ... [2018-10-23 21:16:06,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:06" (1/1) ... [2018-10-23 21:16:06,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 21:16:06,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 21:16:06,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 21:16:06,492 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 21:16:06,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:16:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 21:16:06,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 21:16:06,566 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 21:16:06,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 21:16:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 21:16:06,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 21:16:06,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 21:16:06,568 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 21:16:11,583 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 21:16:11,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:16:11 BoogieIcfgContainer [2018-10-23 21:16:11,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 21:16:11,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 21:16:11,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 21:16:11,594 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 21:16:11,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:16:04" (1/3) ... [2018-10-23 21:16:11,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295b44db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:16:11, skipping insertion in model container [2018-10-23 21:16:11,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:16:06" (2/3) ... [2018-10-23 21:16:11,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295b44db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:16:11, skipping insertion in model container [2018-10-23 21:16:11,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:16:11" (3/3) ... [2018-10-23 21:16:11,599 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label31_false-unreach-call.c [2018-10-23 21:16:11,611 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 21:16:11,626 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 21:16:11,644 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 21:16:11,700 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 21:16:11,700 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 21:16:11,700 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 21:16:11,701 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 21:16:11,701 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 21:16:11,701 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 21:16:11,701 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 21:16:11,701 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 21:16:11,748 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-23 21:16:11,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-23 21:16:11,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:16:11,777 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] [2018-10-23 21:16:11,779 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:16:11,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:16:11,789 INFO L82 PathProgramCache]: Analyzing trace with hash -489199711, now seen corresponding path program 1 times [2018-10-23 21:16:11,791 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:16:11,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:11,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:16:11,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:11,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:16:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:16:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:16:12,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:16:12,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:16:12,900 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:16:12,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:16:12,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:16:12,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:16:12,928 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-23 21:16:16,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:16:16,479 INFO L93 Difference]: Finished difference Result 1085 states and 1949 transitions. [2018-10-23 21:16:16,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:16:16,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2018-10-23 21:16:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:16:16,509 INFO L225 Difference]: With dead ends: 1085 [2018-10-23 21:16:16,509 INFO L226 Difference]: Without dead ends: 767 [2018-10-23 21:16:16,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:16:16,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2018-10-23 21:16:16,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 523. [2018-10-23 21:16:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2018-10-23 21:16:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 922 transitions. [2018-10-23 21:16:16,651 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 922 transitions. Word has length 158 [2018-10-23 21:16:16,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:16:16,652 INFO L481 AbstractCegarLoop]: Abstraction has 523 states and 922 transitions. [2018-10-23 21:16:16,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:16:16,652 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 922 transitions. [2018-10-23 21:16:16,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-23 21:16:16,665 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:16:16,666 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:16:16,671 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:16:16,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:16:16,672 INFO L82 PathProgramCache]: Analyzing trace with hash 690659536, now seen corresponding path program 1 times [2018-10-23 21:16:16,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:16:16,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:16,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:16:16,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:16,677 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:16:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:16:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:16:17,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:16:17,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 21:16:17,022 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:16:17,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 21:16:17,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 21:16:17,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 21:16:17,025 INFO L87 Difference]: Start difference. First operand 523 states and 922 transitions. Second operand 5 states. [2018-10-23 21:16:20,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:16:20,638 INFO L93 Difference]: Finished difference Result 1613 states and 2944 transitions. [2018-10-23 21:16:20,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:16:20,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-10-23 21:16:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:16:20,657 INFO L225 Difference]: With dead ends: 1613 [2018-10-23 21:16:20,658 INFO L226 Difference]: Without dead ends: 1096 [2018-10-23 21:16:20,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 21:16:20,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2018-10-23 21:16:20,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1073. [2018-10-23 21:16:20,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2018-10-23 21:16:20,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1774 transitions. [2018-10-23 21:16:20,728 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1774 transitions. Word has length 169 [2018-10-23 21:16:20,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:16:20,730 INFO L481 AbstractCegarLoop]: Abstraction has 1073 states and 1774 transitions. [2018-10-23 21:16:20,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 21:16:20,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1774 transitions. [2018-10-23 21:16:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-23 21:16:20,737 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:16:20,740 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] [2018-10-23 21:16:20,741 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:16:20,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:16:20,741 INFO L82 PathProgramCache]: Analyzing trace with hash -427347419, now seen corresponding path program 1 times [2018-10-23 21:16:20,741 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:16:20,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:20,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:16:20,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:16:20,745 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:16:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:16:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:16:21,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:16:21,191 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 21:16:21,192 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 172 with the following transitions: [2018-10-23 21:16:21,194 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [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], [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], [725], [727], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-23 21:16:21,294 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 21:16:21,294 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 21:20:32,420 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 21:20:32,422 INFO L272 AbstractInterpreter]: Visited 158 different actions 158 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-23 21:20:32,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:20:32,445 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown