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/Problem12_label51_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:44:12,590 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:44:12,592 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:44:12,605 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:44:12,605 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:44:12,607 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:44:12,608 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:44:12,610 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:44:12,612 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:44:12,613 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:44:12,613 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:44:12,614 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:44:12,615 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:44:12,616 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:44:12,617 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:44:12,618 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:44:12,618 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:44:12,620 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:44:12,622 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:44:12,623 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:44:12,624 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:44:12,626 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:44:12,628 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 23:44:12,638 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:44:12,639 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:44:12,641 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:44:12,642 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:44:12,643 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 [2018-10-26 23:44:12,674 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:44:12,674 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:44:12,675 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:44:12,675 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:44:12,675 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:44:12,676 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:44:12,676 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:44:12,676 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:44:12,676 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:44:12,676 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:44:12,677 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:44:12,677 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:44:12,678 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:44:12,678 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:44:12,678 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:44:12,679 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:44:12,679 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:44:12,680 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:44:12,681 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:44:12,681 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:44:12,681 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:44:12,681 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:44:12,681 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:44:12,682 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:44:12,682 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:44:12,682 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:44:12,682 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:44:12,683 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:44:12,683 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:44:12,683 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:44:12,683 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:44:12,683 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:44:12,684 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:44:12,684 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:44:12,752 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:44:12,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:44:12,773 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:44:12,775 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:44:12,775 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:44:12,776 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label51_false-unreach-call.c [2018-10-26 23:44:12,843 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea5f4ecc1/69070303c7614c03ad51a9e39a154146/FLAG8b7ee9aed [2018-10-26 23:44:13,656 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:44:13,657 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label51_false-unreach-call.c [2018-10-26 23:44:13,690 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea5f4ecc1/69070303c7614c03ad51a9e39a154146/FLAG8b7ee9aed [2018-10-26 23:44:13,709 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea5f4ecc1/69070303c7614c03ad51a9e39a154146 [2018-10-26 23:44:13,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:44:13,725 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:44:13,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:44:13,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:44:13,733 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:44:13,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:44:13" (1/1) ... [2018-10-26 23:44:13,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1086b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:13, skipping insertion in model container [2018-10-26 23:44:13,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:44:13" (1/1) ... [2018-10-26 23:44:13,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:44:13,923 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:44:15,373 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:44:15,380 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:44:15,997 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:44:16,037 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:44:16,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:16 WrapperNode [2018-10-26 23:44:16,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:44:16,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:44:16,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:44:16,040 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:44:16,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:16" (1/1) ... [2018-10-26 23:44:16,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:16" (1/1) ... [2018-10-26 23:44:16,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:44:16,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:44:16,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:44:16,535 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:44:16,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:16" (1/1) ... [2018-10-26 23:44:16,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:16" (1/1) ... [2018-10-26 23:44:16,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:16" (1/1) ... [2018-10-26 23:44:16,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:16" (1/1) ... [2018-10-26 23:44:16,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:16" (1/1) ... [2018-10-26 23:44:16,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:16" (1/1) ... [2018-10-26 23:44:16,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:16" (1/1) ... [2018-10-26 23:44:16,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:44:16,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:44:16,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:44:16,822 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:44:16,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:16" (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 [2018-10-26 23:44:16,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:44:16,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:44:16,902 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-26 23:44:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-26 23:44:16,903 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-26 23:44:16,903 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-26 23:44:16,903 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-26 23:44:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-26 23:44:16,904 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:44:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:44:16,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:44:16,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:44:16,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:44:16,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:44:29,765 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:44:29,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:44:29 BoogieIcfgContainer [2018-10-26 23:44:29,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:44:29,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:44:29,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:44:29,771 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:44:29,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:44:13" (1/3) ... [2018-10-26 23:44:29,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fcced68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:44:29, skipping insertion in model container [2018-10-26 23:44:29,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:16" (2/3) ... [2018-10-26 23:44:29,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fcced68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:44:29, skipping insertion in model container [2018-10-26 23:44:29,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:44:29" (3/3) ... [2018-10-26 23:44:29,775 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label51_false-unreach-call.c [2018-10-26 23:44:29,784 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:44:29,792 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:44:29,811 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:44:29,866 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:44:29,867 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:44:29,867 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:44:29,867 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:44:29,867 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:44:29,867 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:44:29,868 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:44:29,868 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:44:29,923 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-26 23:44:29,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-26 23:44:29,929 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:44:29,930 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:44:29,933 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:44:29,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:44:29,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1101804500, now seen corresponding path program 1 times [2018-10-26 23:44:29,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:44:30,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:44:30,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:44:30,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:44:30,001 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:44:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:44:30,390 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:44:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:44:30,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:44:30,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:44:30,504 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:44:30,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:44:30,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:44:30,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:44:30,558 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-26 23:44:40,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:44:40,222 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-26 23:44:40,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:44:40,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-26 23:44:40,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:44:40,273 INFO L225 Difference]: With dead ends: 2446 [2018-10-26 23:44:40,273 INFO L226 Difference]: Without dead ends: 1604 [2018-10-26 23:44:40,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:44:40,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-26 23:44:40,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-26 23:44:40,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-26 23:44:40,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-10-26 23:44:40,466 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 18 [2018-10-26 23:44:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:44:40,467 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-10-26 23:44:40,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:44:40,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-10-26 23:44:40,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-26 23:44:40,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:44:40,476 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:44:40,476 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:44:40,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:44:40,479 INFO L82 PathProgramCache]: Analyzing trace with hash -907006918, now seen corresponding path program 1 times [2018-10-26 23:44:40,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:44:40,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:44:40,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:44:40,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:44:40,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:44:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:44:40,931 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:44:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:44:41,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:44:41,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:44:41,116 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:44:41,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:44:41,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:44:41,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:44:41,119 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-10-26 23:44:50,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:44:50,647 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-10-26 23:44:50,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:44:50,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2018-10-26 23:44:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:44:50,675 INFO L225 Difference]: With dead ends: 4818 [2018-10-26 23:44:50,675 INFO L226 Difference]: Without dead ends: 3220 [2018-10-26 23:44:50,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:44:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-10-26 23:44:50,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-10-26 23:44:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-10-26 23:44:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-10-26 23:44:50,775 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 92 [2018-10-26 23:44:50,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:44:50,776 INFO L481 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-10-26 23:44:50,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:44:50,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-10-26 23:44:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-26 23:44:50,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:44:50,779 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:44:50,779 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:44:50,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:44:50,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1469630269, now seen corresponding path program 1 times [2018-10-26 23:44:50,780 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:44:50,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:44:50,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:44:50,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:44:50,781 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:44:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:44:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:44:51,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:44:51,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:44:51,025 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:44:51,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:44:51,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:44:51,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:44:51,027 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 5 states. [2018-10-26 23:45:14,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:45:14,458 INFO L93 Difference]: Finished difference Result 11111 states and 19743 transitions. [2018-10-26 23:45:14,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:45:14,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2018-10-26 23:45:14,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:45:14,510 INFO L225 Difference]: With dead ends: 11111 [2018-10-26 23:45:14,510 INFO L226 Difference]: Without dead ends: 7931 [2018-10-26 23:45:14,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:45:14,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7931 states. [2018-10-26 23:45:14,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7931 to 7902. [2018-10-26 23:45:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7902 states. [2018-10-26 23:45:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7902 states to 7902 states and 11698 transitions. [2018-10-26 23:45:14,749 INFO L78 Accepts]: Start accepts. Automaton has 7902 states and 11698 transitions. Word has length 97 [2018-10-26 23:45:14,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:45:14,750 INFO L481 AbstractCegarLoop]: Abstraction has 7902 states and 11698 transitions. [2018-10-26 23:45:14,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:45:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 7902 states and 11698 transitions. [2018-10-26 23:45:14,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-26 23:45:14,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:45:14,755 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:45:14,755 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:45:14,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:45:14,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1193444487, now seen corresponding path program 1 times [2018-10-26 23:45:14,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:45:14,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:14,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:45:14,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:14,757 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:45:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:45:15,025 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:45:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:45:15,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:45:15,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:45:15,222 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:45:15,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:45:15,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:45:15,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:45:15,223 INFO L87 Difference]: Start difference. First operand 7902 states and 11698 transitions. Second operand 6 states. [2018-10-26 23:45:22,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:45:22,261 INFO L93 Difference]: Finished difference Result 19204 states and 29087 transitions. [2018-10-26 23:45:22,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:45:22,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-26 23:45:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:45:22,320 INFO L225 Difference]: With dead ends: 19204 [2018-10-26 23:45:22,320 INFO L226 Difference]: Without dead ends: 11308 [2018-10-26 23:45:22,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:45:22,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11308 states. [2018-10-26 23:45:22,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11308 to 11230. [2018-10-26 23:45:22,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11230 states. [2018-10-26 23:45:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11230 states to 11230 states and 15809 transitions. [2018-10-26 23:45:22,668 INFO L78 Accepts]: Start accepts. Automaton has 11230 states and 15809 transitions. Word has length 143 [2018-10-26 23:45:22,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:45:22,669 INFO L481 AbstractCegarLoop]: Abstraction has 11230 states and 15809 transitions. [2018-10-26 23:45:22,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:45:22,671 INFO L276 IsEmpty]: Start isEmpty. Operand 11230 states and 15809 transitions. [2018-10-26 23:45:22,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-26 23:45:22,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:45:22,676 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:45:22,678 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:45:22,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:45:22,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1195363482, now seen corresponding path program 1 times [2018-10-26 23:45:22,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:45:22,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:22,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:45:22,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:22,681 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:45:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:45:23,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:45:23,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:45:23,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:45:23,270 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:45:23,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:45:23,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:45:23,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:45:23,271 INFO L87 Difference]: Start difference. First operand 11230 states and 15809 transitions. Second operand 5 states. [2018-10-26 23:45:32,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:45:32,513 INFO L93 Difference]: Finished difference Result 34025 states and 49397 transitions. [2018-10-26 23:45:32,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:45:32,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2018-10-26 23:45:32,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:45:32,619 INFO L225 Difference]: With dead ends: 34025 [2018-10-26 23:45:32,619 INFO L226 Difference]: Without dead ends: 22801 [2018-10-26 23:45:32,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:45:32,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22801 states. [2018-10-26 23:45:33,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22801 to 22637. [2018-10-26 23:45:33,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22637 states. [2018-10-26 23:45:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22637 states to 22637 states and 30350 transitions. [2018-10-26 23:45:33,178 INFO L78 Accepts]: Start accepts. Automaton has 22637 states and 30350 transitions. Word has length 172 [2018-10-26 23:45:33,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:45:33,179 INFO L481 AbstractCegarLoop]: Abstraction has 22637 states and 30350 transitions. [2018-10-26 23:45:33,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:45:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 22637 states and 30350 transitions. [2018-10-26 23:45:33,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-26 23:45:33,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:45:33,183 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:45:33,184 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:45:33,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:45:33,184 INFO L82 PathProgramCache]: Analyzing trace with hash -159775001, now seen corresponding path program 1 times [2018-10-26 23:45:33,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:45:33,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:33,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:45:33,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:33,186 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:45:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:45:33,576 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:45:34,212 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:45:34,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:45:34,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:45:34,212 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:45:34,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:45:34,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:45:34,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:45:34,214 INFO L87 Difference]: Start difference. First operand 22637 states and 30350 transitions. Second operand 6 states. [2018-10-26 23:45:49,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:45:49,789 INFO L93 Difference]: Finished difference Result 59145 states and 81641 transitions. [2018-10-26 23:45:49,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:45:49,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 223 [2018-10-26 23:45:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:45:49,908 INFO L225 Difference]: With dead ends: 59145 [2018-10-26 23:45:49,909 INFO L226 Difference]: Without dead ends: 36514 [2018-10-26 23:45:50,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:45:50,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36514 states. [2018-10-26 23:45:50,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36514 to 36339. [2018-10-26 23:45:50,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36339 states. [2018-10-26 23:45:50,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36339 states to 36339 states and 46470 transitions. [2018-10-26 23:45:50,952 INFO L78 Accepts]: Start accepts. Automaton has 36339 states and 46470 transitions. Word has length 223 [2018-10-26 23:45:50,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:45:50,954 INFO L481 AbstractCegarLoop]: Abstraction has 36339 states and 46470 transitions. [2018-10-26 23:45:50,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:45:50,954 INFO L276 IsEmpty]: Start isEmpty. Operand 36339 states and 46470 transitions. [2018-10-26 23:45:50,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-26 23:45:50,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:45:50,963 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:45:50,964 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:45:50,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:45:50,965 INFO L82 PathProgramCache]: Analyzing trace with hash 388716413, now seen corresponding path program 1 times [2018-10-26 23:45:50,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:45:50,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:50,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:45:50,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:50,973 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:45:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:45:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-26 23:45:51,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:45:51,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:45:51,214 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:45:51,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:45:51,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:45:51,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:45:51,216 INFO L87 Difference]: Start difference. First operand 36339 states and 46470 transitions. Second operand 4 states. [2018-10-26 23:46:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:46:00,092 INFO L93 Difference]: Finished difference Result 97441 states and 126072 transitions. [2018-10-26 23:46:00,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:46:00,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2018-10-26 23:46:00,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:46:00,237 INFO L225 Difference]: With dead ends: 97441 [2018-10-26 23:46:00,237 INFO L226 Difference]: Without dead ends: 52368 [2018-10-26 23:46:00,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:46:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52368 states. [2018-10-26 23:46:01,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52368 to 52304. [2018-10-26 23:46:01,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52304 states. [2018-10-26 23:46:01,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52304 states to 52304 states and 62199 transitions. [2018-10-26 23:46:01,710 INFO L78 Accepts]: Start accepts. Automaton has 52304 states and 62199 transitions. Word has length 241 [2018-10-26 23:46:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:46:01,711 INFO L481 AbstractCegarLoop]: Abstraction has 52304 states and 62199 transitions. [2018-10-26 23:46:01,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:46:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 52304 states and 62199 transitions. [2018-10-26 23:46:01,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-26 23:46:01,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:46:01,727 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 23:46:01,727 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:46:01,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:46:01,728 INFO L82 PathProgramCache]: Analyzing trace with hash -560449152, now seen corresponding path program 1 times [2018-10-26 23:46:01,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:46:01,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:46:01,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:46:01,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:46:01,731 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:46:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:46:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:46:02,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:46:02,457 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:46:02,458 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 359 with the following transitions: [2018-10-26 23:46:02,462 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1911], [1913], [1916], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2676], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2844], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-26 23:46:02,554 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:46:02,554 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:46:07,882 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:46:10,182 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:46:10,183 INFO L272 AbstractInterpreter]: Visited 196 different actions 196 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-26 23:46:10,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:46:10,219 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:46:14,133 INFO L227 lantSequenceWeakener]: Weakened 350 states. On average, predicates are now at 75.02% of their original sizes. [2018-10-26 23:46:14,133 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:46:14,898 INFO L415 sIntCurrentIteration]: We unified 357 AI predicates to 357 [2018-10-26 23:46:14,899 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:46:14,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:46:14,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-26 23:46:14,900 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:46:14,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 23:46:14,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 23:46:14,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:46:14,902 INFO L87 Difference]: Start difference. First operand 52304 states and 62199 transitions. Second operand 9 states. Received shutdown request... [2018-10-26 23:47:50,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:47:50,063 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:47:50,069 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:47:50,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:47:50 BoogieIcfgContainer [2018-10-26 23:47:50,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:47:50,070 INFO L168 Benchmark]: Toolchain (without parser) took 216346.71 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.7 GB). Peak memory consumption was 886.9 MB. Max. memory is 7.1 GB. [2018-10-26 23:47:50,072 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 23:47:50,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2312.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-26 23:47:50,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 495.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2018-10-26 23:47:50,074 INFO L168 Benchmark]: Boogie Preprocessor took 286.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2018-10-26 23:47:50,075 INFO L168 Benchmark]: RCFGBuilder took 12944.87 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 186.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -184.9 MB). Peak memory consumption was 670.7 MB. Max. memory is 7.1 GB. [2018-10-26 23:47:50,076 INFO L168 Benchmark]: TraceAbstraction took 200302.16 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 3.2 GB in the end (delta: -756.0 MB). Peak memory consumption was 890.2 MB. Max. memory is 7.1 GB. [2018-10-26 23:47:50,081 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2312.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 495.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 286.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12944.87 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 186.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -184.9 MB). Peak memory consumption was 670.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200302.16 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 3.2 GB in the end (delta: -756.0 MB). Peak memory consumption was 890.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 45). Cancelled while BasicCegarLoop was constructing difference of abstraction (52304states) and FLOYD_HOARE automaton (currently 9 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (84285 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 200.2s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 179.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2677 SDtfs, 21817 SDslu, 1080 SDs, 0 SdLazy, 31500 SolverSat, 8169 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 132.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 413 GetRequests, 367 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52304occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9972850678733031 AbsIntWeakeningRatio, 0.07563025210084033 AbsIntAvgWeakeningVarsNumRemoved, 1063.812324929972 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 544 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1344 NumberOfCodeBlocks, 1344 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1336 ConstructedInterpolants, 0 QuantifiedInterpolants, 1229449 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 320/322 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown