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/Problem19_label42_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:08:13,698 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:08:13,702 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:08:13,721 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:08:13,721 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:08:13,722 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:08:13,726 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:08:13,729 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:08:13,731 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:08:13,733 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:08:13,734 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:08:13,734 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:08:13,737 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:08:13,738 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:08:13,740 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:08:13,743 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:08:13,746 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:08:13,748 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:08:13,760 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:08:13,761 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:08:13,763 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:08:13,764 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:08:13,766 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:08:13,776 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:08:13,777 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:08:13,779 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:08:13,780 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:08:13,780 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:08:13,805 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:08:13,805 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:08:13,806 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:08:13,806 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:08:13,807 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:08:13,807 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:08:13,807 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:08:13,807 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:08:13,807 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:08:13,808 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:08:13,810 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:08:13,810 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:08:13,811 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:08:13,811 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:08:13,811 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:08:13,812 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:08:13,812 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:08:13,812 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:08:13,812 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:08:13,812 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:08:13,813 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:08:13,813 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:08:13,813 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:08:13,813 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:08:13,813 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:08:13,814 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:08:13,816 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:08:13,816 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:08:13,816 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:08:13,816 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:08:13,816 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:08:13,817 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:08:13,817 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:08:13,817 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:08:13,870 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:08:13,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:08:13,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:08:13,890 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:08:13,891 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:08:13,892 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label42_false-unreach-call.c [2018-10-24 19:08:13,952 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6043e0748/fd0aa6e9ec3845e184f0cad8fe848f23/FLAG9af5c8c88 [2018-10-24 19:08:14,836 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:08:14,837 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label42_false-unreach-call.c [2018-10-24 19:08:14,881 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6043e0748/fd0aa6e9ec3845e184f0cad8fe848f23/FLAG9af5c8c88 [2018-10-24 19:08:14,896 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6043e0748/fd0aa6e9ec3845e184f0cad8fe848f23 [2018-10-24 19:08:14,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:08:14,910 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:08:14,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:08:14,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:08:14,915 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:08:14,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:08:14" (1/1) ... [2018-10-24 19:08:14,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c12104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:14, skipping insertion in model container [2018-10-24 19:08:14,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:08:14" (1/1) ... [2018-10-24 19:08:14,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:08:15,183 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:08:17,379 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:08:17,386 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:08:18,779 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:08:18,835 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:08:18,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:18 WrapperNode [2018-10-24 19:08:18,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:08:18,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:08:18,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:08:18,837 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:08:18,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:18" (1/1) ... [2018-10-24 19:08:18,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:18" (1/1) ... [2018-10-24 19:08:19,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:08:19,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:08:19,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:08:19,604 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:08:19,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:18" (1/1) ... [2018-10-24 19:08:19,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:18" (1/1) ... [2018-10-24 19:08:19,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:18" (1/1) ... [2018-10-24 19:08:19,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:18" (1/1) ... [2018-10-24 19:08:19,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:18" (1/1) ... [2018-10-24 19:08:19,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:18" (1/1) ... [2018-10-24 19:08:20,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:18" (1/1) ... [2018-10-24 19:08:20,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:08:20,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:08:20,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:08:20,098 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:08:20,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:08:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:08:20,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:08:20,172 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 19:08:20,173 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 19:08:20,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 19:08:20,173 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 19:08:20,173 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 19:08:20,173 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 19:08:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 19:08:20,174 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 19:08:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 19:08:20,174 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 19:08:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:08:20,175 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:08:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:08:20,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:08:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:08:20,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:08:39,284 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:08:39,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:08:39 BoogieIcfgContainer [2018-10-24 19:08:39,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:08:39,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:08:39,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:08:39,291 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:08:39,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:08:14" (1/3) ... [2018-10-24 19:08:39,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9045c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:08:39, skipping insertion in model container [2018-10-24 19:08:39,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:18" (2/3) ... [2018-10-24 19:08:39,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9045c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:08:39, skipping insertion in model container [2018-10-24 19:08:39,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:08:39" (3/3) ... [2018-10-24 19:08:39,294 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label42_false-unreach-call.c [2018-10-24 19:08:39,305 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:08:39,315 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:08:39,333 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:08:39,386 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:08:39,387 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:08:39,387 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:08:39,387 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:08:39,387 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:08:39,388 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:08:39,388 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:08:39,388 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:08:39,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 19:08:39,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 19:08:39,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:08:39,455 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:08:39,457 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:08:39,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:08:39,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1914472460, now seen corresponding path program 1 times [2018-10-24 19:08:39,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:08:39,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:08:39,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:08:39,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:08:39,527 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:08:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:08:39,896 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:08:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:08:39,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:08:39,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:08:39,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:08:39,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:08:40,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:08:40,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:08:40,011 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 19:08:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:08:56,617 INFO L93 Difference]: Finished difference Result 5034 states and 9499 transitions. [2018-10-24 19:08:56,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:08:56,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-24 19:08:56,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:08:56,681 INFO L225 Difference]: With dead ends: 5034 [2018-10-24 19:08:56,681 INFO L226 Difference]: Without dead ends: 3254 [2018-10-24 19:08:56,701 INFO L605 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 [2018-10-24 19:08:56,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2018-10-24 19:08:56,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3207. [2018-10-24 19:08:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3207 states. [2018-10-24 19:08:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 5994 transitions. [2018-10-24 19:08:56,957 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 5994 transitions. Word has length 16 [2018-10-24 19:08:56,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:08:56,958 INFO L481 AbstractCegarLoop]: Abstraction has 3207 states and 5994 transitions. [2018-10-24 19:08:56,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:08:56,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 5994 transitions. [2018-10-24 19:08:56,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-24 19:08:56,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:08:56,968 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:08:56,969 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:08:56,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:08:56,969 INFO L82 PathProgramCache]: Analyzing trace with hash 677040305, now seen corresponding path program 1 times [2018-10-24 19:08:56,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:08:56,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:08:56,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:08:56,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:08:56,972 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:08:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:08:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:08:57,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:08:57,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:08:57,627 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:08:57,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:08:57,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:08:57,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:08:57,630 INFO L87 Difference]: Start difference. First operand 3207 states and 5994 transitions. Second operand 6 states. [2018-10-24 19:09:31,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:09:31,123 INFO L93 Difference]: Finished difference Result 9590 states and 17980 transitions. [2018-10-24 19:09:31,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:09:31,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-10-24 19:09:31,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:09:31,162 INFO L225 Difference]: With dead ends: 9590 [2018-10-24 19:09:31,162 INFO L226 Difference]: Without dead ends: 6389 [2018-10-24 19:09:31,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:09:31,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2018-10-24 19:09:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6281. [2018-10-24 19:09:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2018-10-24 19:09:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11310 transitions. [2018-10-24 19:09:31,362 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11310 transitions. Word has length 89 [2018-10-24 19:09:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:09:31,363 INFO L481 AbstractCegarLoop]: Abstraction has 6281 states and 11310 transitions. [2018-10-24 19:09:31,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:09:31,363 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11310 transitions. [2018-10-24 19:09:31,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-24 19:09:31,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:09:31,368 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:09:31,368 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:09:31,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:09:31,368 INFO L82 PathProgramCache]: Analyzing trace with hash -144625170, now seen corresponding path program 1 times [2018-10-24 19:09:31,369 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:09:31,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:09:31,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:09:31,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:09:31,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:09:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:09:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:09:31,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:09:31,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:09:31,553 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:09:31,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:09:31,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:09:31,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:09:31,554 INFO L87 Difference]: Start difference. First operand 6281 states and 11310 transitions. Second operand 5 states. [2018-10-24 19:10:10,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:10:10,326 INFO L93 Difference]: Finished difference Result 18967 states and 34376 transitions. [2018-10-24 19:10:10,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 19:10:10,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2018-10-24 19:10:10,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:10:10,388 INFO L225 Difference]: With dead ends: 18967 [2018-10-24 19:10:10,388 INFO L226 Difference]: Without dead ends: 12692 [2018-10-24 19:10:10,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:10:10,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12692 states. [2018-10-24 19:10:10,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12692 to 12416. [2018-10-24 19:10:10,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12416 states. [2018-10-24 19:10:10,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12416 states to 12416 states and 18931 transitions. [2018-10-24 19:10:10,739 INFO L78 Accepts]: Start accepts. Automaton has 12416 states and 18931 transitions. Word has length 103 [2018-10-24 19:10:10,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:10:10,740 INFO L481 AbstractCegarLoop]: Abstraction has 12416 states and 18931 transitions. [2018-10-24 19:10:10,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:10:10,740 INFO L276 IsEmpty]: Start isEmpty. Operand 12416 states and 18931 transitions. [2018-10-24 19:10:10,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-24 19:10:10,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:10:10,752 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 19:10:10,752 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:10:10,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:10:10,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1904079047, now seen corresponding path program 1 times [2018-10-24 19:10:10,753 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:10:10,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:10:10,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:10:10,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:10:10,756 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:10:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:10:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:10:11,295 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:10:11,295 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:10:11,296 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 194 with the following transitions: [2018-10-24 19:10:11,298 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5254], [5256], [5259], [5267], [5275], [5283], [5291], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5822], [5823], [5827], [5838], [5841], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 19:10:11,371 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:10:11,372 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:10:13,867 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:10:13,868 INFO L272 AbstractInterpreter]: Visited 95 different actions 95 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 19:10:13,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:10:13,882 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:10:16,251 INFO L232 lantSequenceWeakener]: Weakened 185 states. On average, predicates are now at 74.99% of their original sizes. [2018-10-24 19:10:16,251 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:10:16,610 INFO L413 sIntCurrentIteration]: We have 192 unified AI predicates [2018-10-24 19:10:16,610 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:10:16,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:10:16,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 19:10:16,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:10:16,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 19:10:16,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 19:10:16,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 19:10:16,613 INFO L87 Difference]: Start difference. First operand 12416 states and 18931 transitions. Second operand 7 states. [2018-10-24 19:10:19,764 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown