java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 01:29:22,933 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 01:29:22,936 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 01:29:22,955 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 01:29:22,955 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 01:29:22,956 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 01:29:22,958 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 01:29:22,960 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 01:29:22,962 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 01:29:22,965 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 01:29:22,966 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 01:29:22,966 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 01:29:22,971 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 01:29:22,972 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 01:29:22,975 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 01:29:22,975 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 01:29:22,976 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 01:29:22,978 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 01:29:22,980 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 01:29:22,982 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 01:29:22,983 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 01:29:22,984 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 01:29:22,987 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 01:29:22,997 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-09-19 01:29:23,015 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 01:29:23,016 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 01:29:23,017 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 01:29:23,017 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 01:29:23,017 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 01:29:23,018 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 01:29:23,018 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 01:29:23,019 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-19 01:29:23,019 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 01:29:23,019 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 01:29:23,019 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 01:29:23,020 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 01:29:23,021 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 01:29:23,021 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 01:29:23,022 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 01:29:23,022 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 01:29:23,022 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 01:29:23,022 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 01:29:23,024 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 01:29:23,024 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 01:29:23,024 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 01:29:23,024 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 01:29:23,025 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 01:29:23,025 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 01:29:23,025 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 01:29:23,025 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 01:29:23,025 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 01:29:23,026 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 01:29:23,026 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 01:29:23,026 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 01:29:23,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 01:29:23,026 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 01:29:23,027 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 01:29:23,027 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 01:29:23,103 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 01:29:23,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 01:29:23,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 01:29:23,130 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 01:29:23,130 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 01:29:23,131 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-09-19 01:29:23,508 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee7539e0/4317ef72fcc9420c88e66744e34aaeae/FLAG2906ab3c3 [2018-09-19 01:29:23,700 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 01:29:23,701 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-09-19 01:29:23,708 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee7539e0/4317ef72fcc9420c88e66744e34aaeae/FLAG2906ab3c3 [2018-09-19 01:29:23,726 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee7539e0/4317ef72fcc9420c88e66744e34aaeae [2018-09-19 01:29:23,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 01:29:23,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 01:29:23,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 01:29:23,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 01:29:23,751 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 01:29:23,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:29:23" (1/1) ... [2018-09-19 01:29:23,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f0cf88f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:23, skipping insertion in model container [2018-09-19 01:29:23,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 01:29:23" (1/1) ... [2018-09-19 01:29:23,771 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 01:29:23,972 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:29:23,990 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 01:29:23,998 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 01:29:24,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:24 WrapperNode [2018-09-19 01:29:24,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 01:29:24,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 01:29:24,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 01:29:24,014 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 01:29:24,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:24" (1/1) ... [2018-09-19 01:29:24,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:24" (1/1) ... [2018-09-19 01:29:24,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 01:29:24,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 01:29:24,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 01:29:24,038 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 01:29:24,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:24" (1/1) ... [2018-09-19 01:29:24,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:24" (1/1) ... [2018-09-19 01:29:24,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:24" (1/1) ... [2018-09-19 01:29:24,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:24" (1/1) ... [2018-09-19 01:29:24,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:24" (1/1) ... [2018-09-19 01:29:24,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:24" (1/1) ... [2018-09-19 01:29:24,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:24" (1/1) ... [2018-09-19 01:29:24,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 01:29:24,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 01:29:24,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 01:29:24,062 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 01:29:24,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 01:29:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 01:29:24,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 01:29:24,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 01:29:24,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 01:29:24,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 01:29:24,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 01:29:24,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 01:29:24,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 01:29:24,593 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 01:29:24,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:29:24 BoogieIcfgContainer [2018-09-19 01:29:24,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 01:29:24,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 01:29:24,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 01:29:24,598 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 01:29:24,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 01:29:23" (1/3) ... [2018-09-19 01:29:24,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf6857a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:29:24, skipping insertion in model container [2018-09-19 01:29:24,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 01:29:24" (2/3) ... [2018-09-19 01:29:24,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf6857a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 01:29:24, skipping insertion in model container [2018-09-19 01:29:24,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 01:29:24" (3/3) ... [2018-09-19 01:29:24,602 INFO L112 eAbstractionObserver]: Analyzing ICFG large_const_true-unreach-call_true-termination.i [2018-09-19 01:29:24,611 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 01:29:24,619 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 01:29:24,672 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 01:29:24,673 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 01:29:24,673 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 01:29:24,673 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 01:29:24,673 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 01:29:24,673 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 01:29:24,673 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 01:29:24,674 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 01:29:24,674 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 01:29:24,693 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-09-19 01:29:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-19 01:29:24,700 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:24,702 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:24,703 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:24,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1169309281, now seen corresponding path program 1 times [2018-09-19 01:29:24,711 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:24,712 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-19 01:29:24,714 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [35], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-19 01:29:24,769 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:24,770 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:24,884 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:24,885 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 15 variables. [2018-09-19 01:29:24,904 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:24,981 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 86.67% of their original sizes. [2018-09-19 01:29:24,982 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:25,039 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:25,041 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:25,041 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 01:29:25,042 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:25,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 01:29:25,054 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 01:29:25,055 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-19 01:29:25,058 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2018-09-19 01:29:25,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:25,298 INFO L93 Difference]: Finished difference Result 56 states and 76 transitions. [2018-09-19 01:29:25,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 01:29:25,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-09-19 01:29:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:25,309 INFO L225 Difference]: With dead ends: 56 [2018-09-19 01:29:25,309 INFO L226 Difference]: Without dead ends: 32 [2018-09-19 01:29:25,313 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-19 01:29:25,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-19 01:29:25,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2018-09-19 01:29:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-19 01:29:25,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-09-19 01:29:25,363 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2018-09-19 01:29:25,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:25,364 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-09-19 01:29:25,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 01:29:25,364 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-09-19 01:29:25,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-19 01:29:25,365 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:25,365 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:25,366 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:25,366 INFO L82 PathProgramCache]: Analyzing trace with hash -659000362, now seen corresponding path program 1 times [2018-09-19 01:29:25,366 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:25,366 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-09-19 01:29:25,367 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-19 01:29:25,368 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:25,369 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:25,389 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:25,389 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Never found a fixpoint. Largest state had 15 variables. [2018-09-19 01:29:25,426 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:25,482 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 79.53% of their original sizes. [2018-09-19 01:29:25,482 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:25,669 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:25,669 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:25,669 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 01:29:25,670 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:25,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 01:29:25,671 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 01:29:25,671 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 01:29:25,671 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2018-09-19 01:29:26,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:26,029 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-09-19 01:29:26,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 01:29:26,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-09-19 01:29:26,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:26,031 INFO L225 Difference]: With dead ends: 37 [2018-09-19 01:29:26,031 INFO L226 Difference]: Without dead ends: 24 [2018-09-19 01:29:26,033 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-09-19 01:29:26,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-19 01:29:26,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-09-19 01:29:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-19 01:29:26,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-09-19 01:29:26,041 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2018-09-19 01:29:26,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:26,041 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-09-19 01:29:26,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 01:29:26,042 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-09-19 01:29:26,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-19 01:29:26,042 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:26,043 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:26,043 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:26,043 INFO L82 PathProgramCache]: Analyzing trace with hash 701537581, now seen corresponding path program 1 times [2018-09-19 01:29:26,044 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:26,044 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-19 01:29:26,044 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [25], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-19 01:29:26,046 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:26,047 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:26,380 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:26,380 INFO L272 AbstractInterpreter]: Visited 17 different actions 223 times. Merged at 8 different actions 151 times. Widened at 2 different actions 30 times. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-09-19 01:29:26,413 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:26,520 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 72.16% of their original sizes. [2018-09-19 01:29:26,521 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:27,122 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:27,123 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:27,123 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-19 01:29:27,123 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:27,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 01:29:27,124 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 01:29:27,124 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-09-19 01:29:27,125 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 12 states. [2018-09-19 01:29:27,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:27,815 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2018-09-19 01:29:27,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 01:29:27,817 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2018-09-19 01:29:27,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:27,819 INFO L225 Difference]: With dead ends: 54 [2018-09-19 01:29:27,819 INFO L226 Difference]: Without dead ends: 38 [2018-09-19 01:29:27,820 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-09-19 01:29:27,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-19 01:29:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-09-19 01:29:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-19 01:29:27,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-09-19 01:29:27,834 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2018-09-19 01:29:27,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:27,835 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-09-19 01:29:27,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 01:29:27,835 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-09-19 01:29:27,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-19 01:29:27,836 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:27,836 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:27,837 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:27,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1708424439, now seen corresponding path program 1 times [2018-09-19 01:29:27,837 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:27,838 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-19 01:29:27,838 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [27], [32], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-19 01:29:27,840 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:27,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:27,954 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:27,954 INFO L272 AbstractInterpreter]: Visited 18 different actions 159 times. Merged at 9 different actions 107 times. Widened at 2 different actions 16 times. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-09-19 01:29:27,995 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:28,076 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 71.34% of their original sizes. [2018-09-19 01:29:28,077 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:28,922 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:28,923 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:28,923 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 01:29:28,923 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:28,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 01:29:28,924 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 01:29:28,924 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-09-19 01:29:28,924 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 13 states. [2018-09-19 01:29:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:29,453 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2018-09-19 01:29:29,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 01:29:29,454 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-09-19 01:29:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:29,458 INFO L225 Difference]: With dead ends: 64 [2018-09-19 01:29:29,458 INFO L226 Difference]: Without dead ends: 48 [2018-09-19 01:29:29,459 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-09-19 01:29:29,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-19 01:29:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2018-09-19 01:29:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-19 01:29:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2018-09-19 01:29:29,474 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 20 [2018-09-19 01:29:29,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:29,474 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2018-09-19 01:29:29,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 01:29:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2018-09-19 01:29:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-19 01:29:29,476 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:29,476 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:29,476 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:29,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1315397429, now seen corresponding path program 1 times [2018-09-19 01:29:29,477 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:29,477 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-19 01:29:29,477 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [27], [30], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-19 01:29:29,483 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:29,483 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:29,713 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 01:29:29,714 INFO L272 AbstractInterpreter]: Visited 18 different actions 363 times. Merged at 9 different actions 260 times. Widened at 2 different actions 50 times. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-09-19 01:29:29,739 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 01:29:29,806 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 71.34% of their original sizes. [2018-09-19 01:29:29,806 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 01:29:30,190 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 01:29:30,191 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 01:29:30,191 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-19 01:29:30,191 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 01:29:30,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 01:29:30,192 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 01:29:30,192 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-09-19 01:29:30,193 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 13 states. [2018-09-19 01:29:30,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 01:29:30,562 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-09-19 01:29:30,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 01:29:30,563 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-09-19 01:29:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 01:29:30,564 INFO L225 Difference]: With dead ends: 58 [2018-09-19 01:29:30,564 INFO L226 Difference]: Without dead ends: 42 [2018-09-19 01:29:30,565 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2018-09-19 01:29:30,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-19 01:29:30,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2018-09-19 01:29:30,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-19 01:29:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-09-19 01:29:30,578 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 20 [2018-09-19 01:29:30,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 01:29:30,579 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-09-19 01:29:30,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 01:29:30,579 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-09-19 01:29:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-19 01:29:30,580 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 01:29:30,580 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 01:29:30,581 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 01:29:30,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1155724272, now seen corresponding path program 1 times [2018-09-19 01:29:30,581 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 01:29:30,581 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-09-19 01:29:30,581 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [25], [37], [41], [47], [49], [55], [58], [60], [63], [65], [66], [67], [68], [70], [71] [2018-09-19 01:29:30,583 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-19 01:29:30,583 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 01:29:30,776 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 01:29:30,776 INFO L272 AbstractInterpreter]: Visited 22 different actions 328 times. Merged at 10 different actions 175 times. Widened at 3 different actions 32 times. Found 20 fixpoints after 3 different actions. Largest state had 19 variables. [2018-09-19 01:29:30,810 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 01:29:30,826 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 01:29:30,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 01:29:30 BoogieIcfgContainer [2018-09-19 01:29:30,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 01:29:30,828 INFO L168 Benchmark]: Toolchain (without parser) took 7089.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -296.0 MB). Peak memory consumption was 453.7 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:30,830 INFO L168 Benchmark]: CDTParser took 0.61 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. [2018-09-19 01:29:30,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:30,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 01:29:30,832 INFO L168 Benchmark]: Boogie Preprocessor took 23.57 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 01:29:30,832 INFO L168 Benchmark]: RCFGBuilder took 531.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:30,833 INFO L168 Benchmark]: TraceAbstraction took 6232.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 498.8 MB). Peak memory consumption was 498.8 MB. Max. memory is 7.1 GB. [2018-09-19 01:29:30,837 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 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 270.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 24.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.57 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 531.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6232.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 498.8 MB). Peak memory consumption was 498.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L11] int c1 = 4000; [L12] int c2 = 2000; [L13] int c3 = 10000; [L14] int n, v; [L15] int i, k, j; [L16] n = __VERIFIER_nondet_int() [L17] COND FALSE !(!(0 <= n && n < 10)) [L18] k = 0 [L19] i = 0 [L20] COND TRUE i < n [L21] i++ [L21] i++ [L22] v = __VERIFIER_nondet_int() [L23] COND FALSE !(!(0 <= v && n < 2)) [L24] COND TRUE v == 0 [L25] k += c1 [L20] COND FALSE !(i < n) [L31] j = 0 [L32] COND TRUE j < n [L33] CALL __VERIFIER_assert(k > 0) [L4] COND FALSE, RET !(!(cond)) [L33] __VERIFIER_assert(k > 0) [L34] j++ [L34] j++ [L35] k-- [L35] k-- [L32] COND TRUE j < n [L33] CALL __VERIFIER_assert(k > 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. UNKNOWN Result, 6.1s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 99 SDtfs, 215 SDslu, 318 SDs, 0 SdLazy, 394 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.2s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.8638554216867467 AbsIntWeakeningRatio, 1.216867469879518 AbsIntAvgWeakeningVarsNumRemoved, 31.734939759036145 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/large_const_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_01-29-30-851.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/large_const_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_01-29-30-851.csv Received shutdown request...