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/eca-rers2012/Problem12_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 11:41:34,948 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 11:41:34,951 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 11:41:34,964 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 11:41:34,965 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 11:41:34,966 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 11:41:34,967 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 11:41:34,970 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 11:41:34,972 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 11:41:34,976 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 11:41:34,978 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 11:41:34,978 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 11:41:34,979 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 11:41:34,980 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 11:41:34,990 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 11:41:34,991 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 11:41:34,994 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 11:41:34,996 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 11:41:34,999 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 11:41:35,000 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 11:41:35,001 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 11:41:35,002 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 11:41:35,004 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 11:41:35,005 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 11:41:35,005 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 11:41:35,006 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 11:41:35,007 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 11:41:35,008 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 11:41:35,008 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 11:41:35,009 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 11:41:35,010 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 11:41:35,011 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 11:41:35,011 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 11:41:35,011 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 11:41:35,012 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 11:41:35,013 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 11:41:35,013 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 11:41:35,028 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 11:41:35,028 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 11:41:35,029 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 11:41:35,030 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 11:41:35,030 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 11:41:35,030 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 11:41:35,030 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 11:41:35,031 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-11 11:41:35,031 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 11:41:35,031 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 11:41:35,031 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 11:41:35,032 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 11:41:35,032 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 11:41:35,032 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 11:41:35,033 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 11:41:35,033 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 11:41:35,033 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 11:41:35,033 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 11:41:35,034 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 11:41:35,034 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 11:41:35,034 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 11:41:35,034 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 11:41:35,034 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 11:41:35,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 11:41:35,035 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 11:41:35,035 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 11:41:35,035 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 11:41:35,037 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 11:41:35,037 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 11:41:35,038 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 11:41:35,038 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 11:41:35,038 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 11:41:35,038 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 11:41:35,094 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 11:41:35,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 11:41:35,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 11:41:35,120 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 11:41:35,120 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 11:41:35,121 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-09-11 11:41:35,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eae5ee941/e7d741a200ef40d8927e9931d38b20c4/FLAGc11826a43 [2018-09-11 11:41:35,996 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 11:41:35,997 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-09-11 11:41:36,043 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eae5ee941/e7d741a200ef40d8927e9931d38b20c4/FLAGc11826a43 [2018-09-11 11:41:36,065 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eae5ee941/e7d741a200ef40d8927e9931d38b20c4 [2018-09-11 11:41:36,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 11:41:36,082 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 11:41:36,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 11:41:36,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 11:41:36,091 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 11:41:36,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:41:36" (1/1) ... [2018-09-11 11:41:36,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ace127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:36, skipping insertion in model container [2018-09-11 11:41:36,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:41:36" (1/1) ... [2018-09-11 11:41:36,527 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 11:41:37,631 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:41:37,652 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 11:41:38,478 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:41:38,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:38 WrapperNode [2018-09-11 11:41:38,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 11:41:38,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 11:41:38,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 11:41:38,725 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 11:41:38,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:38" (1/1) ... [2018-09-11 11:41:38,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:38" (1/1) ... [2018-09-11 11:41:39,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 11:41:39,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 11:41:39,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 11:41:39,028 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 11:41:39,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:38" (1/1) ... [2018-09-11 11:41:39,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:38" (1/1) ... [2018-09-11 11:41:39,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:38" (1/1) ... [2018-09-11 11:41:39,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:38" (1/1) ... [2018-09-11 11:41:39,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:38" (1/1) ... [2018-09-11 11:41:39,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:38" (1/1) ... [2018-09-11 11:41:39,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:38" (1/1) ... [2018-09-11 11:41:39,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 11:41:39,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 11:41:39,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 11:41:39,914 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 11:41:39,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:38" (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 11:41:39,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 11:41:39,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 11:41:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-11 11:41:39,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-11 11:41:39,985 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-11 11:41:39,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-11 11:41:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 11:41:39,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 11:41:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-11 11:41:39,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-11 11:41:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 11:41:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 11:41:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-11 11:41:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-11 11:41:50,173 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 11:41:50,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:41:50 BoogieIcfgContainer [2018-09-11 11:41:50,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 11:41:50,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 11:41:50,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 11:41:50,179 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 11:41:50,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:41:36" (1/3) ... [2018-09-11 11:41:50,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d12d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:41:50, skipping insertion in model container [2018-09-11 11:41:50,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:41:38" (2/3) ... [2018-09-11 11:41:50,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d12d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:41:50, skipping insertion in model container [2018-09-11 11:41:50,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:41:50" (3/3) ... [2018-09-11 11:41:50,183 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label49_true-unreach-call.c [2018-09-11 11:41:50,194 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 11:41:50,206 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 11:41:50,271 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 11:41:50,272 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 11:41:50,272 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 11:41:50,272 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 11:41:50,272 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 11:41:50,273 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 11:41:50,273 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 11:41:50,273 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 11:41:50,273 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 11:41:50,323 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-11 11:41:50,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-11 11:41:50,332 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:41:50,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 11:41:50,334 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 11:41:50,340 INFO L82 PathProgramCache]: Analyzing trace with hash -517362759, now seen corresponding path program 1 times [2018-09-11 11:41:50,343 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:41:50,344 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-09-11 11:41:50,347 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [2360], [2364], [2370], [2374], [3269], [3270], [3271], [3273] [2018-09-11 11:41:50,411 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:41:50,411 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:41:52,353 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:41:52,355 INFO L272 AbstractInterpreter]: Visited 48 different actions 48 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-11 11:41:52,400 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:41:53,206 INFO L232 lantSequenceWeakener]: Weakened 47 states. On average, predicates are now at 77.67% of their original sizes. [2018-09-11 11:41:53,207 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:41:53,561 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:41:53,563 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:41:53,563 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 11:41:53,564 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:41:53,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 11:41:53,576 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 11:41:53,577 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 11:41:53,581 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 6 states. [2018-09-11 11:42:18,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:42:18,882 INFO L93 Difference]: Finished difference Result 2448 states and 4699 transitions. [2018-09-11 11:42:18,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 11:42:18,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2018-09-11 11:42:18,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:42:18,918 INFO L225 Difference]: With dead ends: 2448 [2018-09-11 11:42:18,918 INFO L226 Difference]: Without dead ends: 1606 [2018-09-11 11:42:18,939 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 11:42:18,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2018-09-11 11:42:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1604. [2018-09-11 11:42:19,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-11 11:42:19,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2357 transitions. [2018-09-11 11:42:19,102 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2357 transitions. Word has length 49 [2018-09-11 11:42:19,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:42:19,103 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2357 transitions. [2018-09-11 11:42:19,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 11:42:19,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2357 transitions. [2018-09-11 11:42:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-09-11 11:42:19,109 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:42:19,110 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 11:42:19,112 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 11:42:19,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1324602090, now seen corresponding path program 1 times [2018-09-11 11:42:19,113 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:42:19,113 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 126 with the following transitions: [2018-09-11 11:42:19,114 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [518], [1374], [2360], [2364], [2370], [2374], [2376], [3269], [3270], [3271], [3273], [3274] [2018-09-11 11:42:19,126 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:42:19,126 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:42:28,137 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:42:28,138 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-11 11:42:28,144 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:42:31,839 INFO L232 lantSequenceWeakener]: Weakened 123 states. On average, predicates are now at 76.12% of their original sizes. [2018-09-11 11:42:31,839 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:42:34,656 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:42:34,657 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:42:34,657 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-11 11:42:34,657 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:42:34,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-11 11:42:34,659 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-11 11:42:34,659 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-11 11:42:34,660 INFO L87 Difference]: Start difference. First operand 1604 states and 2357 transitions. Second operand 11 states. [2018-09-11 11:43:32,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:43:32,549 INFO L93 Difference]: Finished difference Result 3976 states and 6980 transitions. [2018-09-11 11:43:32,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-11 11:43:32,550 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 125 [2018-09-11 11:43:32,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:43:32,569 INFO L225 Difference]: With dead ends: 3976 [2018-09-11 11:43:32,570 INFO L226 Difference]: Without dead ends: 3146 [2018-09-11 11:43:32,575 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 131 GetRequests, 78 SyntacticMatches, 37 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-11 11:43:32,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2018-09-11 11:43:32,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 3143. [2018-09-11 11:43:32,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3143 states. [2018-09-11 11:43:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 3918 transitions. [2018-09-11 11:43:32,703 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 3918 transitions. Word has length 125 [2018-09-11 11:43:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:43:32,704 INFO L480 AbstractCegarLoop]: Abstraction has 3143 states and 3918 transitions. [2018-09-11 11:43:32,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-11 11:43:32,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 3918 transitions. [2018-09-11 11:43:32,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-09-11 11:43:32,722 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:43:32,722 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 11:43:32,723 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 11:43:32,723 INFO L82 PathProgramCache]: Analyzing trace with hash -500307262, now seen corresponding path program 1 times [2018-09-11 11:43:32,723 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:43:32,724 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-09-11 11:43:32,724 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [798], [1374], [2360], [2364], [2370], [2374], [2376], [3269], [3270], [3271], [3273], [3274] [2018-09-11 11:43:32,748 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:43:32,749 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