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/loops/trex02_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 08:54:56,764 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 08:54:56,766 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 08:54:56,778 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 08:54:56,779 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 08:54:56,780 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 08:54:56,781 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 08:54:56,783 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 08:54:56,784 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 08:54:56,785 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 08:54:56,788 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 08:54:56,788 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 08:54:56,789 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 08:54:56,790 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 08:54:56,791 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 08:54:56,794 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 08:54:56,795 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 08:54:56,797 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 08:54:56,806 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 08:54:56,811 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 08:54:56,812 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 08:54:56,817 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 08:54:56,819 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 08:54:56,820 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 08:54:56,820 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 08:54:56,821 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 08:54:56,823 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 08:54:56,824 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 08:54:56,825 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 08:54:56,826 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 08:54:56,826 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 08:54:56,829 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 08:54:56,829 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 08:54:56,829 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 08:54:56,830 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 08:54:56,832 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 08:54:56,832 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 [2018-09-11 08:54:56,860 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 08:54:56,860 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 08:54:56,861 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 08:54:56,861 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 08:54:56,862 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 08:54:56,862 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 08:54:56,862 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 08:54:56,863 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-11 08:54:56,863 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 08:54:56,863 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 08:54:56,863 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 08:54:56,864 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 08:54:56,864 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 08:54:56,864 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 08:54:56,865 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 08:54:56,866 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 08:54:56,866 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 08:54:56,866 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 08:54:56,866 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 08:54:56,866 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 08:54:56,866 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 08:54:56,867 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 08:54:56,867 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 08:54:56,867 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 08:54:56,867 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 08:54:56,869 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 08:54:56,869 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 08:54:56,869 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 08:54:56,869 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 08:54:56,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 08:54:56,869 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 08:54:56,870 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 08:54:56,870 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 08:54:56,922 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 08:54:56,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 08:54:56,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 08:54:56,940 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 08:54:56,941 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 08:54:56,942 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02_true-unreach-call_true-termination.i [2018-09-11 08:54:57,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638bcd0a6/7ae739c6d726448f93768a1840bc0106/FLAG1f5a94c5b [2018-09-11 08:54:57,479 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 08:54:57,479 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02_true-unreach-call_true-termination.i [2018-09-11 08:54:57,487 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638bcd0a6/7ae739c6d726448f93768a1840bc0106/FLAG1f5a94c5b [2018-09-11 08:54:57,504 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638bcd0a6/7ae739c6d726448f93768a1840bc0106 [2018-09-11 08:54:57,515 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 08:54:57,518 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 08:54:57,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 08:54:57,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 08:54:57,526 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 08:54:57,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:54:57" (1/1) ... [2018-09-11 08:54:57,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510c1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:57, skipping insertion in model container [2018-09-11 08:54:57,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 08:54:57" (1/1) ... [2018-09-11 08:54:57,682 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 08:54:57,719 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 08:54:57,737 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 08:54:57,742 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 08:54:57,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:57 WrapperNode [2018-09-11 08:54:57,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 08:54:57,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 08:54:57,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 08:54:57,757 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 08:54:57,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:57" (1/1) ... [2018-09-11 08:54:57,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:57" (1/1) ... [2018-09-11 08:54:57,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 08:54:57,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 08:54:57,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 08:54:57,781 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 08:54:57,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:57" (1/1) ... [2018-09-11 08:54:57,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:57" (1/1) ... [2018-09-11 08:54:57,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:57" (1/1) ... [2018-09-11 08:54:57,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:57" (1/1) ... [2018-09-11 08:54:57,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:57" (1/1) ... [2018-09-11 08:54:57,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:57" (1/1) ... [2018-09-11 08:54:57,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:57" (1/1) ... [2018-09-11 08:54:57,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 08:54:57,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 08:54:57,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 08:54:57,802 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 08:54:57,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:57" (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 08:54:57,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 08:54:57,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 08:54:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_trex___true_unreach_call_true_termination_i__foo [2018-09-11 08:54:57,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_trex___true_unreach_call_true_termination_i__foo [2018-09-11 08:54:57,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 08:54:57,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 08:54:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 08:54:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 08:54:57,867 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_trex___true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 08:54:57,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_trex___true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 08:54:58,184 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 08:54:58,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:54:58 BoogieIcfgContainer [2018-09-11 08:54:58,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 08:54:58,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 08:54:58,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 08:54:58,203 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 08:54:58,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 08:54:57" (1/3) ... [2018-09-11 08:54:58,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc10ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:54:58, skipping insertion in model container [2018-09-11 08:54:58,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 08:54:57" (2/3) ... [2018-09-11 08:54:58,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc10ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 08:54:58, skipping insertion in model container [2018-09-11 08:54:58,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 08:54:58" (3/3) ... [2018-09-11 08:54:58,213 INFO L112 eAbstractionObserver]: Analyzing ICFG trex02_true-unreach-call_true-termination.i [2018-09-11 08:54:58,233 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 08:54:58,255 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 08:54:58,307 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 08:54:58,307 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 08:54:58,308 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 08:54:58,308 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 08:54:58,308 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 08:54:58,308 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 08:54:58,308 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 08:54:58,308 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 08:54:58,309 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 08:54:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-09-11 08:54:58,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-11 08:54:58,336 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 08:54:58,337 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 08:54:58,338 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_trex___true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 08:54:58,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1587168562, now seen corresponding path program 1 times [2018-09-11 08:54:58,350 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 08:54:58,351 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-11 08:54:58,353 INFO L202 CegarAbsIntRunner]: [0], [1], [7], [27], [31], [34], [36], [42], [43], [44], [50] [2018-09-11 08:54:58,401 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 08:54:58,402 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 08:54:58,485 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 08:54:58,486 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 3 variables. [2018-09-11 08:54:58,521 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 08:54:58,579 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 91.67% of their original sizes. [2018-09-11 08:54:58,580 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 08:54:58,596 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 08:54:58,598 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 08:54:58,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 08:54:58,598 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 08:54:58,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 08:54:58,609 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 08:54:58,609 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 08:54:58,612 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2018-09-11 08:54:58,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 08:54:58,672 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2018-09-11 08:54:58,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 08:54:58,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-11 08:54:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 08:54:58,683 INFO L225 Difference]: With dead ends: 53 [2018-09-11 08:54:58,683 INFO L226 Difference]: Without dead ends: 30 [2018-09-11 08:54:58,687 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 [2018-09-11 08:54:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-09-11 08:54:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2018-09-11 08:54:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-11 08:54:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-09-11 08:54:58,739 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2018-09-11 08:54:58,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 08:54:58,740 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-09-11 08:54:58,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 08:54:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-09-11 08:54:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-11 08:54:58,743 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 08:54:58,743 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 08:54:58,744 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_trex___true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 08:54:58,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1847555599, now seen corresponding path program 1 times [2018-09-11 08:54:58,746 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 08:54:58,746 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-09-11 08:54:58,746 INFO L202 CegarAbsIntRunner]: [0], [1], [7], [11], [15], [31], [34], [36], [42], [43], [44], [50] [2018-09-11 08:54:58,749 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 08:54:58,749 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 08:54:58,777 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 08:54:58,777 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-11 08:54:58,782 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 08:54:58,816 INFO L232 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 79.17% of their original sizes. [2018-09-11 08:54:58,817 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 08:54:58,910 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 08:54:58,911 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 08:54:58,911 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 08:54:58,911 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 08:54:58,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 08:54:58,912 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 08:54:58,913 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-11 08:54:58,913 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2018-09-11 08:54:59,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 08:54:59,086 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-09-11 08:54:59,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 08:54:59,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-09-11 08:54:59,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 08:54:59,089 INFO L225 Difference]: With dead ends: 30 [2018-09-11 08:54:59,089 INFO L226 Difference]: Without dead ends: 25 [2018-09-11 08:54:59,091 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-09-11 08:54:59,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-11 08:54:59,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2018-09-11 08:54:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-11 08:54:59,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-09-11 08:54:59,099 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2018-09-11 08:54:59,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 08:54:59,099 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-09-11 08:54:59,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 08:54:59,100 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-09-11 08:54:59,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-11 08:54:59,101 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 08:54:59,101 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 08:54:59,101 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_trex___true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 08:54:59,102 INFO L82 PathProgramCache]: Analyzing trace with hash -333087067, now seen corresponding path program 1 times [2018-09-11 08:54:59,102 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 08:54:59,102 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-11 08:54:59,102 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [3], [7], [11], [15], [17], [20], [31], [34], [36], [42], [43], [44], [46], [47], [50] [2018-09-11 08:54:59,104 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 08:54:59,104 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