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_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-12 00:09:07,983 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-12 00:09:07,985 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-12 00:09:07,999 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-12 00:09:08,000 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-12 00:09:08,001 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-12 00:09:08,005 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-12 00:09:08,009 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-12 00:09:08,015 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-12 00:09:08,016 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-12 00:09:08,017 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-12 00:09:08,017 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-12 00:09:08,018 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-12 00:09:08,025 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-12 00:09:08,026 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-12 00:09:08,027 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-12 00:09:08,028 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-12 00:09:08,034 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-12 00:09:08,037 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-12 00:09:08,042 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-12 00:09:08,044 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-12 00:09:08,045 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-12 00:09:08,051 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-12 00:09:08,051 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-12 00:09:08,052 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-12 00:09:08,053 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-12 00:09:08,054 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-12 00:09:08,056 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-12 00:09:08,057 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-12 00:09:08,059 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-12 00:09:08,061 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-12 00:09:08,062 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-12 00:09:08,069 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-09-12 00:09:08,099 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-12 00:09:08,099 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-12 00:09:08,100 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-12 00:09:08,103 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-12 00:09:08,103 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-12 00:09:08,104 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-12 00:09:08,104 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-12 00:09:08,104 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-12 00:09:08,104 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-12 00:09:08,105 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-12 00:09:08,105 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-12 00:09:08,106 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-12 00:09:08,106 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-12 00:09:08,106 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-12 00:09:08,106 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-12 00:09:08,107 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-12 00:09:08,107 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-12 00:09:08,107 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-12 00:09:08,107 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-12 00:09:08,109 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-12 00:09:08,109 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-12 00:09:08,110 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-12 00:09:08,110 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-12 00:09:08,110 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-12 00:09:08,110 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-12 00:09:08,110 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-12 00:09:08,111 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-12 00:09:08,111 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-12 00:09:08,111 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-12 00:09:08,111 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-12 00:09:08,111 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-12 00:09:08,111 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-12 00:09:08,112 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-12 00:09:08,175 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-12 00:09:08,188 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-12 00:09:08,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-12 00:09:08,195 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-12 00:09:08,195 INFO L276 PluginConnector]: CDTParser initialized [2018-09-12 00:09:08,196 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2018-09-12 00:09:08,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeab12e49/21686d59d286498487b7b163bf6d6198/FLAGc8b90c96a [2018-09-12 00:09:08,760 INFO L276 CDTParser]: Found 1 translation units. [2018-09-12 00:09:08,761 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2018-09-12 00:09:08,772 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeab12e49/21686d59d286498487b7b163bf6d6198/FLAGc8b90c96a [2018-09-12 00:09:08,787 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeab12e49/21686d59d286498487b7b163bf6d6198 [2018-09-12 00:09:08,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-12 00:09:08,801 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-12 00:09:08,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-12 00:09:08,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-12 00:09:08,808 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-12 00:09:08,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:09:08" (1/1) ... [2018-09-12 00:09:08,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca2c048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:08, skipping insertion in model container [2018-09-12 00:09:08,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:09:08" (1/1) ... [2018-09-12 00:09:08,982 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-12 00:09:09,025 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-12 00:09:09,044 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-12 00:09:09,052 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-12 00:09:09,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:09 WrapperNode [2018-09-12 00:09:09,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-12 00:09:09,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-12 00:09:09,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-12 00:09:09,071 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-12 00:09:09,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:09" (1/1) ... [2018-09-12 00:09:09,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:09" (1/1) ... [2018-09-12 00:09:09,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-12 00:09:09,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-12 00:09:09,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-12 00:09:09,097 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-12 00:09:09,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:09" (1/1) ... [2018-09-12 00:09:09,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:09" (1/1) ... [2018-09-12 00:09:09,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:09" (1/1) ... [2018-09-12 00:09:09,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:09" (1/1) ... [2018-09-12 00:09:09,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:09" (1/1) ... [2018-09-12 00:09:09,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:09" (1/1) ... [2018-09-12 00:09:09,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:09" (1/1) ... [2018-09-12 00:09:09,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-12 00:09:09,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-12 00:09:09,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-12 00:09:09,127 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-12 00:09:09,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:09" (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 [2018-09-12 00:09:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-12 00:09:09,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-12 00:09:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp____b_true_unreach_call_true_termination_c_i____VERIFIER_assert [2018-09-12 00:09:09,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp____b_true_unreach_call_true_termination_c_i____VERIFIER_assert [2018-09-12 00:09:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-12 00:09:09,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-12 00:09:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-12 00:09:09,206 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-12 00:09:09,582 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-12 00:09:09,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:09:09 BoogieIcfgContainer [2018-09-12 00:09:09,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-12 00:09:09,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-12 00:09:09,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-12 00:09:09,600 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-12 00:09:09,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:09:08" (1/3) ... [2018-09-12 00:09:09,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7f6718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:09:09, skipping insertion in model container [2018-09-12 00:09:09,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:09:09" (2/3) ... [2018-09-12 00:09:09,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7f6718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:09:09, skipping insertion in model container [2018-09-12 00:09:09,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:09:09" (3/3) ... [2018-09-12 00:09:09,608 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005b_true-unreach-call_true-termination.c.i [2018-09-12 00:09:09,629 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-12 00:09:09,643 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-12 00:09:09,696 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-12 00:09:09,697 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-12 00:09:09,697 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-12 00:09:09,698 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-12 00:09:09,698 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-12 00:09:09,698 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-12 00:09:09,698 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-12 00:09:09,698 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-12 00:09:09,698 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-12 00:09:09,718 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-09-12 00:09:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-12 00:09:09,725 INFO L368 BasicCegarLoop]: Found error trace [2018-09-12 00:09:09,726 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-12 00:09:09,727 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp____b_true_unreach_call_true_termination_c_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-12 00:09:09,734 INFO L82 PathProgramCache]: Analyzing trace with hash -232606254, now seen corresponding path program 1 times [2018-09-12 00:09:09,737 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-12 00:09:09,738 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-12 00:09:09,741 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [54], [59], [60], [61], [63] [2018-09-12 00:09:09,779 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-12 00:09:09,780 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-12 00:09:09,848 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-12 00:09:09,849 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 3 variables. [2018-09-12 00:09:09,859 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-12 00:09:09,907 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 66.67% of their original sizes. [2018-09-12 00:09:09,908 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-12 00:09:09,918 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-12 00:09:09,920 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-12 00:09:09,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-12 00:09:09,920 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-12 00:09:09,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-12 00:09:09,933 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-12 00:09:09,933 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-12 00:09:09,936 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-09-12 00:09:10,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-12 00:09:10,010 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2018-09-12 00:09:10,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-12 00:09:10,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-09-12 00:09:10,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-12 00:09:10,023 INFO L225 Difference]: With dead ends: 52 [2018-09-12 00:09:10,024 INFO L226 Difference]: Without dead ends: 23 [2018-09-12 00:09:10,028 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-12 00:09:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-12 00:09:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2018-09-12 00:09:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-12 00:09:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-09-12 00:09:10,066 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2018-09-12 00:09:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-12 00:09:10,067 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-09-12 00:09:10,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-12 00:09:10,067 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-09-12 00:09:10,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-12 00:09:10,068 INFO L368 BasicCegarLoop]: Found error trace [2018-09-12 00:09:10,068 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-12 00:09:10,071 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp____b_true_unreach_call_true_termination_c_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-12 00:09:10,071 INFO L82 PathProgramCache]: Analyzing trace with hash 342023696, now seen corresponding path program 1 times [2018-09-12 00:09:10,071 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-12 00:09:10,072 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-12 00:09:10,072 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [23], [59], [60], [61], [63] [2018-09-12 00:09:10,075 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-12 00:09:10,075 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-12 00:09:10,097 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-12 00:09:10,097 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 3 variables. [2018-09-12 00:09:10,158 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-12 00:09:10,180 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 33.33% of their original sizes. [2018-09-12 00:09:10,182 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-12 00:09:10,200 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-12 00:09:10,200 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-12 00:09:10,200 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-12 00:09:10,201 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-12 00:09:10,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-12 00:09:10,202 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-12 00:09:10,202 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-12 00:09:10,203 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2018-09-12 00:09:10,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-12 00:09:10,241 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2018-09-12 00:09:10,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-12 00:09:10,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-12 00:09:10,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-12 00:09:10,242 INFO L225 Difference]: With dead ends: 24 [2018-09-12 00:09:10,242 INFO L226 Difference]: Without dead ends: 19 [2018-09-12 00:09:10,244 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-12 00:09:10,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-12 00:09:10,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-12 00:09:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-12 00:09:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-09-12 00:09:10,250 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2018-09-12 00:09:10,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-12 00:09:10,250 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-09-12 00:09:10,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-12 00:09:10,250 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-09-12 00:09:10,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-12 00:09:10,251 INFO L368 BasicCegarLoop]: Found error trace [2018-09-12 00:09:10,251 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-12 00:09:10,252 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp____b_true_unreach_call_true_termination_c_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-12 00:09:10,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1334068033, now seen corresponding path program 1 times [2018-09-12 00:09:10,252 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-12 00:09:10,253 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-12 00:09:10,253 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [23], [25], [29], [33], [39], [43], [47], [59], [60], [61], [63] [2018-09-12 00:09:10,254 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-12 00:09:10,255 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-12 00:09:10,264 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-12 00:09:10,264 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Never found a fixpoint. Largest state had 3 variables. [2018-09-12 00:09:10,269 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-12 00:09:10,289 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 33.33% of their original sizes. [2018-09-12 00:09:10,289 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-12 00:09:10,336 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-12 00:09:10,336 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-12 00:09:10,336 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-12 00:09:10,336 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-12 00:09:10,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-12 00:09:10,337 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-12 00:09:10,337 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-12 00:09:10,338 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2018-09-12 00:09:10,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-12 00:09:10,441 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-09-12 00:09:10,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-12 00:09:10,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-09-12 00:09:10,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-12 00:09:10,444 INFO L225 Difference]: With dead ends: 33 [2018-09-12 00:09:10,444 INFO L226 Difference]: Without dead ends: 21 [2018-09-12 00:09:10,447 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-12 00:09:10,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-12 00:09:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-09-12 00:09:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-12 00:09:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-09-12 00:09:10,454 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2018-09-12 00:09:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-12 00:09:10,454 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-09-12 00:09:10,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-12 00:09:10,455 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-09-12 00:09:10,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-12 00:09:10,456 INFO L368 BasicCegarLoop]: Found error trace [2018-09-12 00:09:10,456 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-12 00:09:10,456 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_lit_cggmp____b_true_unreach_call_true_termination_c_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-12 00:09:10,457 INFO L82 PathProgramCache]: Analyzing trace with hash -102748325, now seen corresponding path program 1 times [2018-09-12 00:09:10,458 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-12 00:09:10,458 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-12 00:09:10,458 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [23], [25], [29], [33], [35], [39], [43], [47], [59], [60], [61], [63] [2018-09-12 00:09:10,459 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-12 00:09:10,460 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown