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_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 13:06:01,076 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 13:06:01,078 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 13:06:01,090 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 13:06:01,090 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 13:06:01,091 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 13:06:01,092 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 13:06:01,094 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 13:06:01,096 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 13:06:01,096 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 13:06:01,097 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 13:06:01,098 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 13:06:01,099 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 13:06:01,100 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 13:06:01,101 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 13:06:01,102 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 13:06:01,102 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 13:06:01,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 13:06:01,106 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 13:06:01,108 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 13:06:01,111 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 13:06:01,116 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 13:06:01,118 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 13:06:01,119 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 13:06:01,119 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 13:06:01,120 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 13:06:01,124 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 13:06:01,125 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 13:06:01,128 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 13:06:01,129 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 13:06:01,129 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 13:06:01,130 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 13:06:01,130 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 13:06:01,130 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 13:06:01,133 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 13:06:01,134 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 13:06:01,134 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-11 13:06:01,160 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 13:06:01,161 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 13:06:01,162 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 13:06:01,162 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 13:06:01,162 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 13:06:01,163 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 13:06:01,163 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 13:06:01,163 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 13:06:01,163 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-11 13:06:01,163 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-11 13:06:01,164 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 13:06:01,164 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 13:06:01,165 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 13:06:01,165 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 13:06:01,165 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 13:06:01,165 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 13:06:01,166 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 13:06:01,167 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 13:06:01,167 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 13:06:01,167 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 13:06:01,167 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 13:06:01,167 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 13:06:01,168 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 13:06:01,168 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 13:06:01,168 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 13:06:01,168 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 13:06:01,168 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 13:06:01,169 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 13:06:01,169 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 13:06:01,169 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 13:06:01,169 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 13:06:01,169 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 13:06:01,170 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 13:06:01,170 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 13:06:01,219 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 13:06:01,236 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 13:06:01,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 13:06:01,241 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 13:06:01,242 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 13:06:01,242 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-09-11 13:06:01,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6c3a3b82/b742d17bc7f14d68941aaefa82eb5022/FLAGa6a9b2e01 [2018-09-11 13:06:01,738 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 13:06:01,739 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-09-11 13:06:01,747 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6c3a3b82/b742d17bc7f14d68941aaefa82eb5022/FLAGa6a9b2e01 [2018-09-11 13:06:01,764 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6c3a3b82/b742d17bc7f14d68941aaefa82eb5022 [2018-09-11 13:06:01,776 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 13:06:01,780 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 13:06:01,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 13:06:01,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 13:06:01,789 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 13:06:01,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 01:06:01" (1/1) ... [2018-09-11 13:06:01,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b82260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:01, skipping insertion in model container [2018-09-11 13:06:01,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 01:06:01" (1/1) ... [2018-09-11 13:06:01,975 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 13:06:02,064 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 13:06:02,087 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 13:06:02,108 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 13:06:02,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02 WrapperNode [2018-09-11 13:06:02,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 13:06:02,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 13:06:02,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 13:06:02,127 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 13:06:02,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 13:06:02,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 13:06:02,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 13:06:02,156 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 13:06:02,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (1/1) ... [2018-09-11 13:06:02,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 13:06:02,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 13:06:02,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 13:06:02,204 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 13:06:02,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (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 [2018-09-11 13:06:02,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 13:06:02,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 13:06:02,275 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assert [2018-09-11 13:06:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assert [2018-09-11 13:06:02,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 13:06:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 13:06:02,276 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 13:06:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 13:06:03,120 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 13:06:03,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 01:06:03 BoogieIcfgContainer [2018-09-11 13:06:03,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 13:06:03,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 13:06:03,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 13:06:03,126 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 13:06:03,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 01:06:01" (1/3) ... [2018-09-11 13:06:03,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29aec99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 01:06:03, skipping insertion in model container [2018-09-11 13:06:03,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:06:02" (2/3) ... [2018-09-11 13:06:03,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29aec99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 01:06:03, skipping insertion in model container [2018-09-11 13:06:03,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 01:06:03" (3/3) ... [2018-09-11 13:06:03,130 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_01_true-unreach-call.i [2018-09-11 13:06:03,140 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 13:06:03,149 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 13:06:03,199 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 13:06:03,200 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 13:06:03,200 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 13:06:03,200 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 13:06:03,201 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 13:06:03,201 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 13:06:03,201 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 13:06:03,201 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 13:06:03,202 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 13:06:03,221 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-09-11 13:06:03,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-11 13:06:03,229 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:06:03,230 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 13:06:03,231 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:06:03,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1725340710, now seen corresponding path program 1 times [2018-09-11 13:06:03,240 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:06:03,241 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-11 13:06:03,245 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [34], [36], [67], [69], [86], [88], [92], [97], [106], [107], [108], [110] [2018-09-11 13:06:03,284 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:06:03,285 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 13:06:03,345 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 13:06:03,347 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 13 variables. [2018-09-11 13:06:03,360 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 13:06:03,407 INFO L232 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2018-09-11 13:06:03,408 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 13:06:03,433 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 13:06:03,435 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 13:06:03,435 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 13:06:03,435 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 13:06:03,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 13:06:03,447 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 13:06:03,448 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 13:06:03,450 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2018-09-11 13:06:03,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 13:06:03,529 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2018-09-11 13:06:03,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 13:06:03,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-09-11 13:06:03,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 13:06:03,539 INFO L225 Difference]: With dead ends: 68 [2018-09-11 13:06:03,539 INFO L226 Difference]: Without dead ends: 34 [2018-09-11 13:06:03,543 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 13:06:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-09-11 13:06:03,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-09-11 13:06:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-11 13:06:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-11 13:06:03,586 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2018-09-11 13:06:03,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 13:06:03,587 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-11 13:06:03,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 13:06:03,587 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-11 13:06:03,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-11 13:06:03,588 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:06:03,588 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 13:06:03,589 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:06:03,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1379623414, now seen corresponding path program 1 times [2018-09-11 13:06:03,589 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:06:03,590 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-09-11 13:06:03,590 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [20], [23], [36], [40], [43], [69], [73], [76], [88], [92], [97], [106], [107], [108], [110] [2018-09-11 13:06:03,593 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:06:03,593 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 13:06:03,604 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 13:06:03,605 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 13 variables. [2018-09-11 13:06:03,639 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 13:06:03,657 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 83.33% of their original sizes. [2018-09-11 13:06:03,659 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 13:06:03,666 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 13:06:03,666 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 13:06:03,666 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 13:06:03,667 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 13:06:03,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 13:06:03,668 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 13:06:03,668 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 13:06:03,668 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 3 states. [2018-09-11 13:06:03,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 13:06:03,793 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2018-09-11 13:06:03,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 13:06:03,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-09-11 13:06:03,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 13:06:03,795 INFO L225 Difference]: With dead ends: 62 [2018-09-11 13:06:03,796 INFO L226 Difference]: Without dead ends: 38 [2018-09-11 13:06:03,798 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 13:06:03,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-11 13:06:03,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-09-11 13:06:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-11 13:06:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-09-11 13:06:03,806 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 21 [2018-09-11 13:06:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 13:06:03,806 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-09-11 13:06:03,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 13:06:03,807 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-09-11 13:06:03,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-11 13:06:03,808 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:06:03,808 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 13:06:03,808 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:06:03,809 INFO L82 PathProgramCache]: Analyzing trace with hash 762401953, now seen corresponding path program 1 times [2018-09-11 13:06:03,809 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:06:03,809 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-09-11 13:06:03,809 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [20], [23], [25], [28], [32], [36], [40], [43], [69], [73], [76], [88], [92], [97], [106], [107], [108], [110] [2018-09-11 13:06:03,812 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:06:03,812 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 13:06:03,822 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 13:06:03,822 INFO L272 AbstractInterpreter]: Visited 11 different actions 15 times. Merged at 3 different actions 3 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 14 variables. [2018-09-11 13:06:03,857 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 13:06:03,889 INFO L232 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 65% of their original sizes. [2018-09-11 13:06:03,889 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 13:06:03,972 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 13:06:03,973 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 13:06:03,973 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-11 13:06:03,973 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 13:06:03,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-11 13:06:03,974 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-11 13:06:03,974 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-11 13:06:03,975 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-09-11 13:06:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 13:06:04,284 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2018-09-11 13:06:04,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-11 13:06:04,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-09-11 13:06:04,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 13:06:04,286 INFO L225 Difference]: With dead ends: 70 [2018-09-11 13:06:04,286 INFO L226 Difference]: Without dead ends: 42 [2018-09-11 13:06:04,288 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-11 13:06:04,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-11 13:06:04,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-09-11 13:06:04,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-11 13:06:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-09-11 13:06:04,296 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 25 [2018-09-11 13:06:04,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 13:06:04,296 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-09-11 13:06:04,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-11 13:06:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-09-11 13:06:04,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-11 13:06:04,298 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:06:04,298 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 13:06:04,299 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:06:04,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1518951494, now seen corresponding path program 1 times [2018-09-11 13:06:04,299 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:06:04,299 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2018-09-11 13:06:04,300 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [16], [20], [23], [25], [28], [30], [32], [36], [40], [43], [69], [73], [76], [88], [92], [97], [106], [107], [108], [110] [2018-09-11 13:06:04,302 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:06:04,302 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown