java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label17_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:36:26,017 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:36:26,020 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:36:26,034 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:36:26,034 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:36:26,035 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:36:26,037 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:36:26,038 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:36:26,041 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:36:26,042 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:36:26,046 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:36:26,047 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:36:26,051 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:36:26,052 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:36:26,056 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:36:26,057 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:36:26,058 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:36:26,063 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:36:26,068 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:36:26,069 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:36:26,070 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:36:26,072 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:36:26,076 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:36:26,077 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:36:26,077 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:36:26,081 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:36:26,081 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:36:26,082 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:36:26,083 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:36:26,084 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:36:26,085 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:36:26,087 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:36:26,087 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:36:26,087 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:36:26,089 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:36:26,090 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:36:26,091 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:36:26,106 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:36:26,106 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:36:26,107 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:36:26,107 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:36:26,108 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:36:26,108 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:36:26,108 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:36:26,108 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:36:26,108 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:36:26,109 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:36:26,109 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:36:26,110 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:36:26,110 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:36:26,110 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:36:26,110 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:36:26,110 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:36:26,111 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:36:26,111 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:36:26,111 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:36:26,111 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:36:26,111 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:36:26,112 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:36:26,112 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:36:26,112 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:36:26,112 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:36:26,112 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:36:26,113 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:36:26,113 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:36:26,113 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:36:26,113 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:36:26,113 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:36:26,113 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:36:26,114 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:36:26,158 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:36:26,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:36:26,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:36:26,180 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:36:26,180 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:36:26,181 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label17_false-unreach-call.c [2018-07-24 12:36:26,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8dd0ef19/e90a061c2539473dbfdc698db552cd27/FLAG9467a365e [2018-07-24 12:36:27,129 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:36:27,131 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label17_false-unreach-call.c [2018-07-24 12:36:27,183 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8dd0ef19/e90a061c2539473dbfdc698db552cd27/FLAG9467a365e [2018-07-24 12:36:27,203 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8dd0ef19/e90a061c2539473dbfdc698db552cd27 [2018-07-24 12:36:27,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:36:27,223 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:36:27,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:36:27,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:36:27,231 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:36:27,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:36:27" (1/1) ... [2018-07-24 12:36:27,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8b2370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:36:27, skipping insertion in model container [2018-07-24 12:36:27,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:36:27" (1/1) ... [2018-07-24 12:36:27,739 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:36:29,448 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:36:29,471 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:36:30,755 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:36:31,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:36:31 WrapperNode [2018-07-24 12:36:31,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:36:31,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:36:31,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:36:31,507 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:36:31,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:36:31" (1/1) ... [2018-07-24 12:36:31,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:36:31" (1/1) ... [2018-07-24 12:36:31,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:36:31,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:36:31,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:36:31,836 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:36:33,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:36:31" (1/1) ... [2018-07-24 12:36:33,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:36:31" (1/1) ... [2018-07-24 12:36:33,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:36:31" (1/1) ... [2018-07-24 12:36:33,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:36:31" (1/1) ... [2018-07-24 12:36:33,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:36:31" (1/1) ... [2018-07-24 12:36:33,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:36:31" (1/1) ... [2018-07-24 12:36:33,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:36:31" (1/1) ... [2018-07-24 12:36:33,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:36:33,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:36:33,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:36:33,939 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:36:33,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:36:31" (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 [2018-07-24 12:36:34,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:36:34,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:36:34,011 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 12:36:34,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 12:36:34,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:36:34,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:36:34,012 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output5 [2018-07-24 12:36:34,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output5 [2018-07-24 12:36:34,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:36:34,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:36:34,012 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:36:34,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:36:34,013 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:36:34,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:36:34,014 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output6 [2018-07-24 12:36:34,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output6 [2018-07-24 12:36:34,015 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:36:34,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:36:51,498 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:36:51,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:36:51 BoogieIcfgContainer [2018-07-24 12:36:51,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:36:51,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:36:51,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:36:51,503 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:36:51,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:36:27" (1/3) ... [2018-07-24 12:36:51,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76055411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:36:51, skipping insertion in model container [2018-07-24 12:36:51,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:36:31" (2/3) ... [2018-07-24 12:36:51,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76055411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:36:51, skipping insertion in model container [2018-07-24 12:36:51,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:36:51" (3/3) ... [2018-07-24 12:36:51,507 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label17_false-unreach-call.c [2018-07-24 12:36:51,516 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:36:51,529 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:36:51,594 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:36:51,594 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:36:51,595 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:36:51,595 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:36:51,595 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:36:51,595 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:36:51,595 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:36:51,595 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:36:51,595 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:36:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-24 12:36:51,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-24 12:36:51,650 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:36:51,651 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:36:51,651 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:36:51,657 INFO L82 PathProgramCache]: Analyzing trace with hash 539110552, now seen corresponding path program 1 times [2018-07-24 12:36:51,659 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:36:51,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:51,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:51,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:51,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:36:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:52,049 WARN L169 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:36:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:36:52,169 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:36:52,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:36:52,170 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:36:52,176 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:36:52,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:36:52,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:36:52,199 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-07-24 12:37:10,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:37:10,018 INFO L93 Difference]: Finished difference Result 5034 states and 9499 transitions. [2018-07-24 12:37:10,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:37:10,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-07-24 12:37:10,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:37:10,074 INFO L225 Difference]: With dead ends: 5034 [2018-07-24 12:37:10,074 INFO L226 Difference]: Without dead ends: 3254 [2018-07-24 12:37:10,088 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:37:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2018-07-24 12:37:10,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3207. [2018-07-24 12:37:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3207 states. [2018-07-24 12:37:10,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 5994 transitions. [2018-07-24 12:37:10,312 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 5994 transitions. Word has length 17 [2018-07-24 12:37:10,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:37:10,313 INFO L471 AbstractCegarLoop]: Abstraction has 3207 states and 5994 transitions. [2018-07-24 12:37:10,313 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:37:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 5994 transitions. [2018-07-24 12:37:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-24 12:37:10,322 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:37:10,323 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:37:10,324 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:37:10,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1203262176, now seen corresponding path program 1 times [2018-07-24 12:37:10,324 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:37:10,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:10,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:10,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:10,326 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:37:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:10,742 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:37:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:37:11,107 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:37:11,107 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:37:11,107 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:37:11,110 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:37:11,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:37:11,111 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:37:11,111 INFO L87 Difference]: Start difference. First operand 3207 states and 5994 transitions. Second operand 6 states. [2018-07-24 12:37:42,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:37:42,076 INFO L93 Difference]: Finished difference Result 12097 states and 23124 transitions. [2018-07-24 12:37:42,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:37:42,076 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2018-07-24 12:37:42,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:37:42,124 INFO L225 Difference]: With dead ends: 12097 [2018-07-24 12:37:42,124 INFO L226 Difference]: Without dead ends: 8896 [2018-07-24 12:37:42,139 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:37:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8896 states. [2018-07-24 12:37:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8896 to 8825. [2018-07-24 12:37:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8825 states. [2018-07-24 12:37:42,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8825 states to 8825 states and 14386 transitions. [2018-07-24 12:37:42,375 INFO L78 Accepts]: Start accepts. Automaton has 8825 states and 14386 transitions. Word has length 90 [2018-07-24 12:37:42,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:37:42,376 INFO L471 AbstractCegarLoop]: Abstraction has 8825 states and 14386 transitions. [2018-07-24 12:37:42,376 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:37:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 8825 states and 14386 transitions. [2018-07-24 12:37:42,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-24 12:37:42,381 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:37:42,381 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:37:42,382 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:37:42,382 INFO L82 PathProgramCache]: Analyzing trace with hash -706449597, now seen corresponding path program 1 times [2018-07-24 12:37:42,382 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:37:42,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:42,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:42,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:42,384 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:37:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:37:42,611 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:37:42,612 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:37:42,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:37:42,613 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:37:42,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:37:42,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:37:42,613 INFO L87 Difference]: Start difference. First operand 8825 states and 14386 transitions. Second operand 6 states. [2018-07-24 12:38:00,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:38:00,485 INFO L93 Difference]: Finished difference Result 20713 states and 34411 transitions. [2018-07-24 12:38:00,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:38:00,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-07-24 12:38:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:38:00,546 INFO L225 Difference]: With dead ends: 20713 [2018-07-24 12:38:00,547 INFO L226 Difference]: Without dead ends: 11894 [2018-07-24 12:38:00,570 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:38:00,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11894 states. [2018-07-24 12:38:00,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11894 to 11805. [2018-07-24 12:38:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11805 states. [2018-07-24 12:38:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11805 states to 11805 states and 18694 transitions. [2018-07-24 12:38:00,851 INFO L78 Accepts]: Start accepts. Automaton has 11805 states and 18694 transitions. Word has length 104 [2018-07-24 12:38:00,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:38:00,852 INFO L471 AbstractCegarLoop]: Abstraction has 11805 states and 18694 transitions. [2018-07-24 12:38:00,852 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:38:00,852 INFO L276 IsEmpty]: Start isEmpty. Operand 11805 states and 18694 transitions. [2018-07-24 12:38:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-24 12:38:00,861 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:00,861 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-07-24 12:38:00,861 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:00,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1957845648, now seen corresponding path program 1 times [2018-07-24 12:38:00,862 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:00,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:00,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:00,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:00,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:38:01,378 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:38:01,378 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:38:01,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:01,395 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:38:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:01,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:38:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:38:01,902 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:38:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:38:02,462 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:38:02,463 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:38:02,463 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:38:02,463 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:38:02,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:38:02,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:38:02,464 INFO L87 Difference]: Start difference. First operand 11805 states and 18694 transitions. Second operand 5 states. [2018-07-24 12:38:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:38:29,079 INFO L93 Difference]: Finished difference Result 31243 states and 50482 transitions. [2018-07-24 12:38:29,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:38:29,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2018-07-24 12:38:29,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:38:29,176 INFO L225 Difference]: With dead ends: 31243 [2018-07-24 12:38:29,176 INFO L226 Difference]: Without dead ends: 19444 [2018-07-24 12:38:29,220 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 351 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:38:29,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19444 states. [2018-07-24 12:38:29,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19444 to 19237. [2018-07-24 12:38:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19237 states. [2018-07-24 12:38:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19237 states to 19237 states and 29792 transitions. [2018-07-24 12:38:29,704 INFO L78 Accepts]: Start accepts. Automaton has 19237 states and 29792 transitions. Word has length 178 [2018-07-24 12:38:29,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:38:29,705 INFO L471 AbstractCegarLoop]: Abstraction has 19237 states and 29792 transitions. [2018-07-24 12:38:29,705 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:38:29,705 INFO L276 IsEmpty]: Start isEmpty. Operand 19237 states and 29792 transitions. [2018-07-24 12:38:29,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-07-24 12:38:29,712 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:29,712 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-07-24 12:38:29,712 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:29,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1577447546, now seen corresponding path program 1 times [2018-07-24 12:38:29,713 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:29,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:29,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:29,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:29,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:30,008 WARN L169 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:38:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 20 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:38:30,395 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:38:30,395 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:38:30,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:30,410 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:38:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:30,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:38:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:38:30,920 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:38:31,125 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 12:38:31,385 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 20 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:38:31,418 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:38:31,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:38:31,418 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:38:31,419 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:38:31,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:38:31,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:38:31,420 INFO L87 Difference]: Start difference. First operand 19237 states and 29792 transitions. Second operand 5 states. [2018-07-24 12:38:52,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:38:52,513 INFO L93 Difference]: Finished difference Result 45945 states and 72583 transitions. [2018-07-24 12:38:52,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:38:52,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2018-07-24 12:38:52,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:38:52,620 INFO L225 Difference]: With dead ends: 45945 [2018-07-24 12:38:52,621 INFO L226 Difference]: Without dead ends: 26714 [2018-07-24 12:38:52,670 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 379 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:38:52,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26714 states. [2018-07-24 12:38:53,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26714 to 26469. [2018-07-24 12:38:53,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26469 states. [2018-07-24 12:38:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26469 states to 26469 states and 38356 transitions. [2018-07-24 12:38:53,231 INFO L78 Accepts]: Start accepts. Automaton has 26469 states and 38356 transitions. Word has length 192 [2018-07-24 12:38:53,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:38:53,231 INFO L471 AbstractCegarLoop]: Abstraction has 26469 states and 38356 transitions. [2018-07-24 12:38:53,231 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:38:53,232 INFO L276 IsEmpty]: Start isEmpty. Operand 26469 states and 38356 transitions. [2018-07-24 12:38:53,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-24 12:38:53,242 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:38:53,242 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:38:53,242 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:38:53,243 INFO L82 PathProgramCache]: Analyzing trace with hash 2065736920, now seen corresponding path program 1 times [2018-07-24 12:38:53,243 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:38:53,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:53,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:53,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:38:53,244 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:38:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 20 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:38:53,544 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:38:53,545 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:38:53,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:38:53,564 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:38:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:38:53,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:38:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:38:53,832 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:38:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 20 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:38:54,351 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:38:54,352 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 12:38:54,352 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:38:54,352 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:38:54,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:38:54,353 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:38:54,353 INFO L87 Difference]: Start difference. First operand 26469 states and 38356 transitions. Second operand 5 states. [2018-07-24 12:39:18,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:39:18,283 INFO L93 Difference]: Finished difference Result 80820 states and 124787 transitions. [2018-07-24 12:39:18,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:39:18,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2018-07-24 12:39:18,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:39:18,474 INFO L225 Difference]: With dead ends: 80820 [2018-07-24 12:39:18,475 INFO L226 Difference]: Without dead ends: 54357 [2018-07-24 12:39:18,530 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 436 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:39:18,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54357 states. [2018-07-24 12:39:19,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54357 to 53400. [2018-07-24 12:39:19,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53400 states. [2018-07-24 12:39:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53400 states to 53400 states and 74138 transitions. [2018-07-24 12:39:19,657 INFO L78 Accepts]: Start accepts. Automaton has 53400 states and 74138 transitions. Word has length 219 [2018-07-24 12:39:19,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:39:19,657 INFO L471 AbstractCegarLoop]: Abstraction has 53400 states and 74138 transitions. [2018-07-24 12:39:19,658 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:39:19,658 INFO L276 IsEmpty]: Start isEmpty. Operand 53400 states and 74138 transitions. [2018-07-24 12:39:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-24 12:39:19,679 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:39:19,680 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-07-24 12:39:19,680 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:39:19,680 INFO L82 PathProgramCache]: Analyzing trace with hash -880730040, now seen corresponding path program 1 times [2018-07-24 12:39:19,680 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:39:19,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:39:19,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:39:19,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:39:19,682 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:39:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:39:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:39:20,330 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:39:20,331 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:39:20,331 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:39:20,331 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:39:20,331 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:39:20,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:39:20,332 INFO L87 Difference]: Start difference. First operand 53400 states and 74138 transitions. Second operand 6 states. [2018-07-24 12:39:48,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:39:48,752 INFO L93 Difference]: Finished difference Result 160928 states and 232922 transitions. [2018-07-24 12:39:48,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:39:48,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 270 [2018-07-24 12:39:48,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:39:49,140 INFO L225 Difference]: With dead ends: 160928 [2018-07-24 12:39:49,140 INFO L226 Difference]: Without dead ends: 107534 [2018-07-24 12:39:49,269 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:39:49,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107534 states. [2018-07-24 12:39:51,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107534 to 106246. [2018-07-24 12:39:51,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106246 states. [2018-07-24 12:39:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106246 states to 106246 states and 143337 transitions. [2018-07-24 12:39:51,816 INFO L78 Accepts]: Start accepts. Automaton has 106246 states and 143337 transitions. Word has length 270 [2018-07-24 12:39:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:39:51,816 INFO L471 AbstractCegarLoop]: Abstraction has 106246 states and 143337 transitions. [2018-07-24 12:39:51,816 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:39:51,817 INFO L276 IsEmpty]: Start isEmpty. Operand 106246 states and 143337 transitions. [2018-07-24 12:39:51,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-07-24 12:39:51,835 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:39:51,835 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:39:51,836 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:39:51,836 INFO L82 PathProgramCache]: Analyzing trace with hash 361639334, now seen corresponding path program 1 times [2018-07-24 12:39:51,836 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:39:51,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:39:51,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:39:51,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:39:51,837 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:39:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:39:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 20 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:39:52,469 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:39:52,469 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:39:52,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:39:52,476 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:39:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:39:52,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:39:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:39:52,925 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:39:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 20 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:39:53,443 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:39:53,444 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-07-24 12:39:53,444 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:39:53,445 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:39:53,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:39:53,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:39:53,445 INFO L87 Difference]: Start difference. First operand 106246 states and 143337 transitions. Second operand 5 states. [2018-07-24 12:40:20,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:40:20,205 INFO L93 Difference]: Finished difference Result 324949 states and 465659 transitions. [2018-07-24 12:40:20,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:40:20,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 420 [2018-07-24 12:40:20,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:40:20,815 INFO L225 Difference]: With dead ends: 324949 [2018-07-24 12:40:20,815 INFO L226 Difference]: Without dead ends: 218709 [2018-07-24 12:40:20,971 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 837 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:40:21,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218709 states. Received shutdown request... [2018-07-24 12:40:24,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218709 to 215526. [2018-07-24 12:40:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215526 states. [2018-07-24 12:40:24,945 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:40:24,950 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:40:24,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:40:24 BoogieIcfgContainer [2018-07-24 12:40:24,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:40:24,951 INFO L168 Benchmark]: Toolchain (without parser) took 237731.68 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -539.6 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-07-24 12:40:24,952 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:40:24,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4282.53 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 190.8 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -100.9 MB). Peak memory consumption was 489.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:40:24,953 INFO L168 Benchmark]: Boogie Procedure Inliner took 328.87 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. [2018-07-24 12:40:24,954 INFO L168 Benchmark]: Boogie Preprocessor took 2101.94 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 874.0 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -873.9 MB). Peak memory consumption was 126.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:40:24,955 INFO L168 Benchmark]: RCFGBuilder took 17560.67 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 255.3 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 264.9 MB). Peak memory consumption was 999.5 MB. Max. memory is 7.1 GB. [2018-07-24 12:40:24,956 INFO L168 Benchmark]: TraceAbstraction took 213450.59 ms. Allocated memory was 2.9 GB in the beginning and 3.3 GB in the end (delta: 460.3 MB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 122.3 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-24 12:40:24,961 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 4282.53 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 190.8 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -100.9 MB). Peak memory consumption was 489.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 328.87 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 2101.94 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 874.0 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -873.9 MB). Peak memory consumption was 126.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17560.67 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 255.3 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 264.9 MB). Peak memory consumption was 999.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213450.59 ms. Allocated memory was 2.9 GB in the beginning and 3.3 GB in the end (delta: 460.3 MB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 122.3 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 213.3s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 195.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4403 SDtfs, 45463 SDslu, 5372 SDs, 0 SdLazy, 75950 SolverSat, 19577 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 167.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2088 GetRequests, 2013 SyntacticMatches, 13 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106246occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 2904 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 2499 NumberOfCodeBlocks, 2499 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3492 ConstructedInterpolants, 0 QuantifiedInterpolants, 3667961 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1882 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 651/1293 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label17_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-40-24-977.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label17_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-40-24-977.csv Completed graceful shutdown