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-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:32:12,774 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:32:12,776 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:32:12,790 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:32:12,790 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:32:12,791 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:32:12,793 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:32:12,795 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:32:12,797 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:32:12,803 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:32:12,804 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:32:12,805 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:32:12,806 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:32:12,807 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:32:12,809 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:32:12,810 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:32:12,811 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:32:12,812 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:32:12,814 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:32:12,815 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:32:12,816 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:32:12,817 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:32:12,819 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:32:12,820 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:32:12,820 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:32:12,821 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:32:12,823 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:32:12,825 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:32:12,826 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:32:12,829 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:32:12,829 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:32:12,830 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:32:12,830 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:32:12,831 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:32:12,833 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:32:12,834 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:32:12,835 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 [2018-09-10 12:32:12,866 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:32:12,866 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:32:12,867 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:32:12,868 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:32:12,868 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:32:12,869 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:32:12,869 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:32:12,869 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:32:12,869 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:32:12,869 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:32:12,870 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:32:12,870 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:32:12,872 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:32:12,872 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:32:12,872 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:32:12,872 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:32:12,872 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:32:12,872 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:32:12,873 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:32:12,873 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:32:12,873 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:32:12,873 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:32:12,875 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:32:12,875 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:32:12,875 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:32:12,875 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:32:12,875 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:32:12,876 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:32:12,876 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:32:12,876 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:32:12,876 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:32:12,876 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:32:12,877 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:32:12,930 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:32:12,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:32:12,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:32:12,955 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:32:12,956 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:32:12,956 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label56_true-unreach-call.c [2018-09-10 12:32:13,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be81e2ac4/2703ae39d6c249f0a5b7413d15dd8ad6/FLAG9aad764b8 [2018-09-10 12:32:13,748 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:32:13,749 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label56_true-unreach-call.c [2018-09-10 12:32:13,774 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be81e2ac4/2703ae39d6c249f0a5b7413d15dd8ad6/FLAG9aad764b8 [2018-09-10 12:32:13,791 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be81e2ac4/2703ae39d6c249f0a5b7413d15dd8ad6 [2018-09-10 12:32:13,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:32:13,806 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:32:13,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:32:13,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:32:13,814 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:32:13,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:32:13" (1/1) ... [2018-09-10 12:32:13,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35cc2be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:13, skipping insertion in model container [2018-09-10 12:32:13,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:32:13" (1/1) ... [2018-09-10 12:32:14,162 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:32:14,934 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:32:14,952 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:32:15,528 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:32:15,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:15 WrapperNode [2018-09-10 12:32:15,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:32:15,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:32:15,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:32:15,765 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:32:15,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:15" (1/1) ... [2018-09-10 12:32:15,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:15" (1/1) ... [2018-09-10 12:32:16,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:32:16,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:32:16,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:32:16,048 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:32:16,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:15" (1/1) ... [2018-09-10 12:32:16,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:15" (1/1) ... [2018-09-10 12:32:16,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:15" (1/1) ... [2018-09-10 12:32:16,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:15" (1/1) ... [2018-09-10 12:32:16,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:15" (1/1) ... [2018-09-10 12:32:16,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:15" (1/1) ... [2018-09-10 12:32:16,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:15" (1/1) ... [2018-09-10 12:32:16,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:32:16,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:32:16,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:32:16,898 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:32:16,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:15" (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 [2018-09-10 12:32:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:32:16,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:32:16,972 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 [2018-09-10 12:32:16,972 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 [2018-09-10 12:32:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:32:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:32:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:32:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:32:16,973 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 [2018-09-10 12:32:16,973 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 [2018-09-10 12:32:33,423 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:32:33,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:32:33 BoogieIcfgContainer [2018-09-10 12:32:33,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:32:33,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:32:33,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:32:33,430 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:32:33,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:32:13" (1/3) ... [2018-09-10 12:32:33,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7d71ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:32:33, skipping insertion in model container [2018-09-10 12:32:33,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:15" (2/3) ... [2018-09-10 12:32:33,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7d71ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:32:33, skipping insertion in model container [2018-09-10 12:32:33,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:32:33" (3/3) ... [2018-09-10 12:32:33,433 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label56_true-unreach-call.c [2018-09-10 12:32:33,442 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:32:33,450 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:32:33,505 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:32:33,506 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:32:33,506 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:32:33,506 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:32:33,506 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:32:33,507 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:32:33,507 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:32:33,507 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:32:33,507 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:32:33,541 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-10 12:32:33,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-10 12:32:33,553 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:33,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:33,555 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]=== [2018-09-10 12:32:33,561 INFO L82 PathProgramCache]: Analyzing trace with hash 471801625, now seen corresponding path program 1 times [2018-09-10 12:32:33,564 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:33,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:33,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:33,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:33,623 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:34,121 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:32:34,122 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:32:34,122 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:34,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:32:34,144 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:32:34,144 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:32:34,147 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-10 12:32:45,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:45,815 INFO L93 Difference]: Finished difference Result 2125 states and 3954 transitions. [2018-09-10 12:32:45,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:32:45,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-09-10 12:32:45,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:45,851 INFO L225 Difference]: With dead ends: 2125 [2018-09-10 12:32:45,851 INFO L226 Difference]: Without dead ends: 1515 [2018-09-10 12:32:45,864 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:32:45,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2018-09-10 12:32:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1043. [2018-09-10 12:32:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2018-09-10 12:32:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1647 transitions. [2018-09-10 12:32:46,016 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1647 transitions. Word has length 73 [2018-09-10 12:32:46,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:46,017 INFO L480 AbstractCegarLoop]: Abstraction has 1043 states and 1647 transitions. [2018-09-10 12:32:46,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:32:46,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1647 transitions. [2018-09-10 12:32:46,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-10 12:32:46,031 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:46,032 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, 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] [2018-09-10 12:32:46,032 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]=== [2018-09-10 12:32:46,034 INFO L82 PathProgramCache]: Analyzing trace with hash 609204810, now seen corresponding path program 1 times [2018-09-10 12:32:46,034 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:46,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:46,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:46,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:46,037 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:46,426 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:32:46,427 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:32:46,427 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:46,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:32:46,429 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:32:46,429 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:32:46,430 INFO L87 Difference]: Start difference. First operand 1043 states and 1647 transitions. Second operand 5 states. [2018-09-10 12:32:56,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:56,104 INFO L93 Difference]: Finished difference Result 3017 states and 4847 transitions. [2018-09-10 12:32:56,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:32:56,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-09-10 12:32:56,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:56,129 INFO L225 Difference]: With dead ends: 3017 [2018-09-10 12:32:56,129 INFO L226 Difference]: Without dead ends: 1980 [2018-09-10 12:32:56,134 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:32:56,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2018-09-10 12:32:56,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1954. [2018-09-10 12:32:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1954 states. [2018-09-10 12:32:56,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2892 transitions. [2018-09-10 12:32:56,206 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2892 transitions. Word has length 145 [2018-09-10 12:32:56,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:56,207 INFO L480 AbstractCegarLoop]: Abstraction has 1954 states and 2892 transitions. [2018-09-10 12:32:56,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:32:56,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2892 transitions. [2018-09-10 12:32:56,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-10 12:32:56,217 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:56,219 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, 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] [2018-09-10 12:32:56,219 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]=== [2018-09-10 12:32:56,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1377106921, now seen corresponding path program 1 times [2018-09-10 12:32:56,219 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:56,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:56,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:56,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:56,221 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:56,977 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:56,977 INFO L197 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 [2018-09-10 12:32:56,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:56,993 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:57,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:03,638 WARN L175 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 42 [2018-09-10 12:33:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:33:03,835 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:33:07,248 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:33:07,249 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-10 12:33:07,249 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:33:07,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:33:07,251 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:33:07,251 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2018-09-10 12:33:07,251 INFO L87 Difference]: Start difference. First operand 1954 states and 2892 transitions. Second operand 6 states. [2018-09-10 12:33:39,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:39,104 INFO L93 Difference]: Finished difference Result 7492 states and 11448 transitions. [2018-09-10 12:33:39,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:33:39,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-09-10 12:33:39,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:39,149 INFO L225 Difference]: With dead ends: 7492 [2018-09-10 12:33:39,149 INFO L226 Difference]: Without dead ends: 5544 [2018-09-10 12:33:39,165 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 291 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=53, Invalid=128, Unknown=1, NotChecked=0, Total=182 [2018-09-10 12:33:39,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5544 states. [2018-09-10 12:33:39,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5544 to 5536. [2018-09-10 12:33:39,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5536 states. [2018-09-10 12:33:39,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5536 states to 5536 states and 8329 transitions. [2018-09-10 12:33:39,355 INFO L78 Accepts]: Start accepts. Automaton has 5536 states and 8329 transitions. Word has length 148 [2018-09-10 12:33:39,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:39,356 INFO L480 AbstractCegarLoop]: Abstraction has 5536 states and 8329 transitions. [2018-09-10 12:33:39,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:33:39,356 INFO L276 IsEmpty]: Start isEmpty. Operand 5536 states and 8329 transitions. [2018-09-10 12:33:39,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-10 12:33:39,361 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:39,362 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, 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] [2018-09-10 12:33:39,362 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:33:39,362 INFO L82 PathProgramCache]: Analyzing trace with hash -2038367270, now seen corresponding path program 1 times [2018-09-10 12:33:39,363 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:39,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:39,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:39,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:39,365 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:39,699 WARN L175 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:33:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:33:39,971 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:33:39,971 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:33:39,971 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:33:39,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:33:39,972 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:33:39,972 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:33:39,973 INFO L87 Difference]: Start difference. First operand 5536 states and 8329 transitions. Second operand 6 states. [2018-09-10 12:33:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:46,217 INFO L93 Difference]: Finished difference Result 12945 states and 19844 transitions. [2018-09-10 12:33:46,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:33:46,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-09-10 12:33:46,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:46,259 INFO L225 Difference]: With dead ends: 12945 [2018-09-10 12:33:46,259 INFO L226 Difference]: Without dead ends: 7415 [2018-09-10 12:33:46,287 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:33:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7415 states. [2018-09-10 12:33:46,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7415 to 7350. [2018-09-10 12:33:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7350 states. [2018-09-10 12:33:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7350 states to 7350 states and 9667 transitions. [2018-09-10 12:33:46,478 INFO L78 Accepts]: Start accepts. Automaton has 7350 states and 9667 transitions. Word has length 153 [2018-09-10 12:33:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:46,478 INFO L480 AbstractCegarLoop]: Abstraction has 7350 states and 9667 transitions. [2018-09-10 12:33:46,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:33:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 7350 states and 9667 transitions. [2018-09-10 12:33:46,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-09-10 12:33:46,482 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:46,482 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, 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] [2018-09-10 12:33:46,482 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:33:46,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1658269462, now seen corresponding path program 1 times [2018-09-10 12:33:46,483 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:46,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:46,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:46,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:46,484 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:46,752 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:33:46,753 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:46,753 INFO L197 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 [2018-09-10 12:33:46,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:46,763 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:46,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:33:46,984 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:33:47,260 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:33:47,260 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-10 12:33:47,260 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:33:47,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:33:47,261 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:33:47,262 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:33:47,262 INFO L87 Difference]: Start difference. First operand 7350 states and 9667 transitions. Second operand 3 states. [2018-09-10 12:33:52,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:52,263 INFO L93 Difference]: Finished difference Result 14694 states and 19352 transitions. [2018-09-10 12:33:52,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:33:52,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2018-09-10 12:33:52,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:52,299 INFO L225 Difference]: With dead ends: 14694 [2018-09-10 12:33:52,299 INFO L226 Difference]: Without dead ends: 7350 [2018-09-10 12:33:52,336 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 321 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:33:52,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2018-09-10 12:33:52,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 7350. [2018-09-10 12:33:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7350 states. [2018-09-10 12:33:52,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7350 states to 7350 states and 9178 transitions. [2018-09-10 12:33:52,500 INFO L78 Accepts]: Start accepts. Automaton has 7350 states and 9178 transitions. Word has length 161 [2018-09-10 12:33:52,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:52,501 INFO L480 AbstractCegarLoop]: Abstraction has 7350 states and 9178 transitions. [2018-09-10 12:33:52,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:33:52,501 INFO L276 IsEmpty]: Start isEmpty. Operand 7350 states and 9178 transitions. [2018-09-10 12:33:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-09-10 12:33:52,508 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:52,508 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:33:52,509 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:33:52,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1108450461, now seen corresponding path program 1 times [2018-09-10 12:33:52,509 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:52,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:52,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:52,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:52,510 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 137 proven. 69 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-10 12:33:53,288 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:53,289 INFO L197 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 [2018-09-10 12:33:53,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:53,297 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:53,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-10 12:33:53,760 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:56,043 WARN L175 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2018-09-10 12:33:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 137 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:33:56,707 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:56,707 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:33:56,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:56,724 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:56,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-10 12:33:59,187 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:59,786 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 137 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:33:59,788 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:33:59,789 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 17 [2018-09-10 12:33:59,789 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:33:59,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 12:33:59,790 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 12:33:59,791 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2018-09-10 12:33:59,791 INFO L87 Difference]: Start difference. First operand 7350 states and 9178 transitions. Second operand 11 states. Received shutdown request... [2018-09-10 12:36:36,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-10 12:36:36,429 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:36:36,435 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:36:36,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:36:36 BoogieIcfgContainer [2018-09-10 12:36:36,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:36:36,436 INFO L168 Benchmark]: Toolchain (without parser) took 262633.60 ms. Allocated memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: 1.4 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -791.6 MB). Peak memory consumption was 609.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:36:36,438 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:36:36,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1956.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:36:36,439 INFO L168 Benchmark]: Boogie Procedure Inliner took 283.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2018-09-10 12:36:36,440 INFO L168 Benchmark]: Boogie Preprocessor took 849.80 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 920.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:36:36,441 INFO L168 Benchmark]: RCFGBuilder took 16526.47 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 496.8 MB). Peak memory consumption was 496.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:36:36,442 INFO L168 Benchmark]: TraceAbstraction took 243010.55 ms. Allocated memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: 481.3 MB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -373.9 MB). Peak memory consumption was 107.4 MB. Max. memory is 7.1 GB. [2018-09-10 12:36:36,447 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1956.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 283.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 849.80 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 920.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16526.47 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 496.8 MB). Peak memory consumption was 496.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243010.55 ms. Allocated memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: 481.3 MB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -373.9 MB). Peak memory consumption was 107.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 206]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 206). Cancelled while BasicCegarLoop was constructing difference of abstraction (7350states) and FLOYD_HOARE automaton (currently 15 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (10689 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 242.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 221.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2010 SDtfs, 11180 SDslu, 1632 SDs, 0 SdLazy, 19422 SolverSat, 5149 SolverUnsat, 74 SolverUnknown, 0 SolverNotchecked, 214.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1624 GetRequests, 1556 SyntacticMatches, 13 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7350occurred in iteration=4, 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: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 571 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 19.4s InterpolantComputationTime, 1700 NumberOfCodeBlocks, 1700 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2469 ConstructedInterpolants, 266 QuantifiedInterpolants, 3019843 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1475 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 1219/1568 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/Problem17_label56_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-36-36-462.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label56_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-36-36-462.csv Completed graceful shutdown