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/Problem12_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:47:16,142 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:47:16,144 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:47:16,157 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:47:16,157 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:47:16,158 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:47:16,159 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:47:16,161 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:47:16,163 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:47:16,164 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:47:16,165 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:47:16,165 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:47:16,166 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:47:16,167 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:47:16,168 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:47:16,169 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:47:16,170 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:47:16,172 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:47:16,174 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:47:16,176 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:47:16,177 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:47:16,178 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:47:16,181 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:47:16,181 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:47:16,182 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:47:16,183 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:47:16,186 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:47:16,187 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:47:16,188 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:47:16,191 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:47:16,191 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:47:16,192 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:47:16,193 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:47:16,193 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:47:16,197 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:47:16,198 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:47:16,198 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 11:47:16,232 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:47:16,233 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:47:16,234 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:47:16,234 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:47:16,234 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:47:16,234 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:47:16,235 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:47:16,235 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:47:16,235 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:47:16,235 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:47:16,235 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:47:16,236 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:47:16,237 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:47:16,237 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:47:16,237 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:47:16,237 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:47:16,237 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:47:16,238 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:47:16,238 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:47:16,238 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:47:16,238 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:47:16,238 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:47:16,239 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:47:16,239 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:47:16,239 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:47:16,239 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:47:16,240 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:47:16,240 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:47:16,240 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:47:16,240 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:47:16,240 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:47:16,241 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:47:16,241 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:47:16,288 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:47:16,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:47:16,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:47:16,317 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:47:16,318 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:47:16,319 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label43_true-unreach-call.c [2018-09-10 11:47:16,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da219efdf/4b4c0bdee5fd41fc8f8e952d70a5bdac/FLAG2e7e9707a [2018-09-10 11:47:17,104 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:47:17,105 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label43_true-unreach-call.c [2018-09-10 11:47:17,144 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da219efdf/4b4c0bdee5fd41fc8f8e952d70a5bdac/FLAG2e7e9707a [2018-09-10 11:47:17,166 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da219efdf/4b4c0bdee5fd41fc8f8e952d70a5bdac [2018-09-10 11:47:17,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:47:17,186 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:47:17,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:47:17,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:47:17,197 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:47:17,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:47:17" (1/1) ... [2018-09-10 11:47:17,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7598abde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:17, skipping insertion in model container [2018-09-10 11:47:17,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:47:17" (1/1) ... [2018-09-10 11:47:17,603 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:47:18,677 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:47:18,696 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:47:19,353 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:47:19,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:19 WrapperNode [2018-09-10 11:47:19,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:47:19,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:47:19,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:47:19,615 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:47:19,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:19" (1/1) ... [2018-09-10 11:47:19,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:19" (1/1) ... [2018-09-10 11:47:19,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:47:19,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:47:19,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:47:19,874 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:47:20,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:19" (1/1) ... [2018-09-10 11:47:20,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:19" (1/1) ... [2018-09-10 11:47:20,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:19" (1/1) ... [2018-09-10 11:47:20,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:19" (1/1) ... [2018-09-10 11:47:20,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:19" (1/1) ... [2018-09-10 11:47:20,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:19" (1/1) ... [2018-09-10 11:47:20,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:19" (1/1) ... [2018-09-10 11:47:20,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:47:20,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:47:20,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:47:20,729 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:47:20,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:19" (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 11:47:20,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:47:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:47:20,804 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 11:47:20,804 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 11:47:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:47:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:47:20,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:47:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:47:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:47:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:47:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:47:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:47:20,806 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 11:47:20,806 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 11:47:30,414 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:47:30,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:47:30 BoogieIcfgContainer [2018-09-10 11:47:30,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:47:30,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:47:30,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:47:30,420 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:47:30,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:47:17" (1/3) ... [2018-09-10 11:47:30,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5955abfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:47:30, skipping insertion in model container [2018-09-10 11:47:30,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:19" (2/3) ... [2018-09-10 11:47:30,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5955abfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:47:30, skipping insertion in model container [2018-09-10 11:47:30,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:47:30" (3/3) ... [2018-09-10 11:47:30,423 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label43_true-unreach-call.c [2018-09-10 11:47:30,433 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:47:30,443 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:47:30,506 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:47:30,507 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:47:30,507 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:47:30,507 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:47:30,507 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:47:30,508 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:47:30,508 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:47:30,508 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:47:30,508 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:47:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-10 11:47:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-10 11:47:30,564 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:30,566 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] [2018-09-10 11:47:30,567 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 11:47:30,574 INFO L82 PathProgramCache]: Analyzing trace with hash 814594732, now seen corresponding path program 1 times [2018-09-10 11:47:30,577 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:30,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:30,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:30,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:30,627 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:31,098 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 11:47:31,101 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:47:31,101 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:47:31,101 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:47:31,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:47:31,124 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:47:31,125 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:47:31,128 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-10 11:47:38,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:47:38,951 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-10 11:47:38,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:47:38,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-09-10 11:47:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:47:38,994 INFO L225 Difference]: With dead ends: 2446 [2018-09-10 11:47:38,995 INFO L226 Difference]: Without dead ends: 1604 [2018-09-10 11:47:39,010 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:47:39,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-10 11:47:39,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-10 11:47:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-10 11:47:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-09-10 11:47:39,226 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 48 [2018-09-10 11:47:39,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:47:39,227 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-09-10 11:47:39,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:47:39,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-09-10 11:47:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-10 11:47:39,239 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:39,240 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:39,240 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 11:47:39,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1562875058, now seen corresponding path program 1 times [2018-09-10 11:47:39,241 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:39,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:39,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:39,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:39,244 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:47:39,614 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:47:39,614 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 11:47:39,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:39,628 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:47:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:39,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:47:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:47:39,897 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:47:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:47:40,259 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:47:40,259 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2018-09-10 11:47:40,259 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:47:40,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:47:40,262 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:47:40,262 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:47:40,262 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 3 states. [2018-09-10 11:47:50,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:47:50,700 INFO L93 Difference]: Finished difference Result 4738 states and 8562 transitions. [2018-09-10 11:47:50,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:47:50,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2018-09-10 11:47:50,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:47:50,725 INFO L225 Difference]: With dead ends: 4738 [2018-09-10 11:47:50,725 INFO L226 Difference]: Without dead ends: 3140 [2018-09-10 11:47:50,734 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:47:50,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2018-09-10 11:47:50,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3140. [2018-09-10 11:47:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3140 states. [2018-09-10 11:47:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 5269 transitions. [2018-09-10 11:47:50,841 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 5269 transitions. Word has length 124 [2018-09-10 11:47:50,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:47:50,842 INFO L480 AbstractCegarLoop]: Abstraction has 3140 states and 5269 transitions. [2018-09-10 11:47:50,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:47:50,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 5269 transitions. [2018-09-10 11:47:50,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-10 11:47:50,849 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:50,849 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:50,849 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 11:47:50,850 INFO L82 PathProgramCache]: Analyzing trace with hash -617356794, now seen corresponding path program 1 times [2018-09-10 11:47:50,850 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:50,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:50,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:50,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:50,851 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:47:51,031 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:47:51,031 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:47:51,032 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:47:51,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:47:51,033 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:47:51,033 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:47:51,033 INFO L87 Difference]: Start difference. First operand 3140 states and 5269 transitions. Second operand 5 states. [2018-09-10 11:48:01,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:01,255 INFO L93 Difference]: Finished difference Result 9545 states and 16221 transitions. [2018-09-10 11:48:01,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:48:01,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-09-10 11:48:01,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:01,298 INFO L225 Difference]: With dead ends: 9545 [2018-09-10 11:48:01,298 INFO L226 Difference]: Without dead ends: 6411 [2018-09-10 11:48:01,310 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:48:01,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2018-09-10 11:48:01,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 6350. [2018-09-10 11:48:01,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6350 states. [2018-09-10 11:48:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6350 states to 6350 states and 9814 transitions. [2018-09-10 11:48:01,508 INFO L78 Accepts]: Start accepts. Automaton has 6350 states and 9814 transitions. Word has length 128 [2018-09-10 11:48:01,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:01,509 INFO L480 AbstractCegarLoop]: Abstraction has 6350 states and 9814 transitions. [2018-09-10 11:48:01,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:48:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 6350 states and 9814 transitions. [2018-09-10 11:48:01,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-10 11:48:01,513 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:01,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:01,514 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 11:48:01,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1537069657, now seen corresponding path program 1 times [2018-09-10 11:48:01,515 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:01,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:01,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:01,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:01,516 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:01,694 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:48:01,694 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:48:01,694 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:48:01,694 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:01,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:48:01,695 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:48:01,696 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:48:01,696 INFO L87 Difference]: Start difference. First operand 6350 states and 9814 transitions. Second operand 5 states. [2018-09-10 11:48:20,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:20,160 INFO L93 Difference]: Finished difference Result 25286 states and 40901 transitions. [2018-09-10 11:48:20,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:48:20,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-09-10 11:48:20,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:20,249 INFO L225 Difference]: With dead ends: 25286 [2018-09-10 11:48:20,249 INFO L226 Difference]: Without dead ends: 18942 [2018-09-10 11:48:20,292 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:48:20,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18942 states. [2018-09-10 11:48:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18942 to 18876. [2018-09-10 11:48:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18876 states. [2018-09-10 11:48:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18876 states to 18876 states and 27672 transitions. [2018-09-10 11:48:20,806 INFO L78 Accepts]: Start accepts. Automaton has 18876 states and 27672 transitions. Word has length 139 [2018-09-10 11:48:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:20,807 INFO L480 AbstractCegarLoop]: Abstraction has 18876 states and 27672 transitions. [2018-09-10 11:48:20,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:48:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 18876 states and 27672 transitions. [2018-09-10 11:48:20,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-10 11:48:20,810 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:20,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:20,811 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 11:48:20,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1709647650, now seen corresponding path program 1 times [2018-09-10 11:48:20,811 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:20,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:20,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:20,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:20,813 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:21,107 WARN L175 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:48:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:48:21,245 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:48:21,245 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:48:21,245 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:21,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:48:21,246 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:48:21,246 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:48:21,247 INFO L87 Difference]: Start difference. First operand 18876 states and 27672 transitions. Second operand 6 states. [2018-09-10 11:48:30,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:30,588 INFO L93 Difference]: Finished difference Result 49385 states and 75940 transitions. [2018-09-10 11:48:30,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:48:30,589 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-09-10 11:48:30,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:30,745 INFO L225 Difference]: With dead ends: 49385 [2018-09-10 11:48:30,745 INFO L226 Difference]: Without dead ends: 30515 [2018-09-10 11:48:30,808 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:48:30,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30515 states. [2018-09-10 11:48:31,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30515 to 30316. [2018-09-10 11:48:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30316 states. [2018-09-10 11:48:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30316 states to 30316 states and 44015 transitions. [2018-09-10 11:48:31,611 INFO L78 Accepts]: Start accepts. Automaton has 30316 states and 44015 transitions. Word has length 162 [2018-09-10 11:48:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:31,612 INFO L480 AbstractCegarLoop]: Abstraction has 30316 states and 44015 transitions. [2018-09-10 11:48:31,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:48:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 30316 states and 44015 transitions. [2018-09-10 11:48:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-09-10 11:48:31,618 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:31,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:31,618 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 11:48:31,619 INFO L82 PathProgramCache]: Analyzing trace with hash 158667397, now seen corresponding path program 1 times [2018-09-10 11:48:31,619 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:31,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:31,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:31,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:31,620 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:48:31,880 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:48:31,880 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:48:31,880 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:31,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:48:31,881 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:48:31,881 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:48:31,882 INFO L87 Difference]: Start difference. First operand 30316 states and 44015 transitions. Second operand 4 states. [2018-09-10 11:48:43,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:43,358 INFO L93 Difference]: Finished difference Result 79065 states and 116577 transitions. [2018-09-10 11:48:43,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:48:43,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2018-09-10 11:48:43,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:43,552 INFO L225 Difference]: With dead ends: 79065 [2018-09-10 11:48:43,553 INFO L226 Difference]: Without dead ends: 48755 [2018-09-10 11:48:43,639 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 11:48:43,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48755 states. [2018-09-10 11:48:44,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48755 to 48742. [2018-09-10 11:48:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48742 states. [2018-09-10 11:48:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48742 states to 48742 states and 65127 transitions. [2018-09-10 11:48:44,538 INFO L78 Accepts]: Start accepts. Automaton has 48742 states and 65127 transitions. Word has length 197 [2018-09-10 11:48:44,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:44,539 INFO L480 AbstractCegarLoop]: Abstraction has 48742 states and 65127 transitions. [2018-09-10 11:48:44,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:48:44,539 INFO L276 IsEmpty]: Start isEmpty. Operand 48742 states and 65127 transitions. [2018-09-10 11:48:44,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-09-10 11:48:44,568 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:44,568 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:48:44,569 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:48:44,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1694131392, now seen corresponding path program 1 times [2018-09-10 11:48:44,569 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:44,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:44,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:44,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:44,577 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:44,929 WARN L175 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:48:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 82 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:48:45,433 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:48:45,433 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 11:48:45,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:45,446 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:48:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:45,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:48:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-10 11:48:46,152 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:48:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 82 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:48:47,081 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:48:47,081 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:48:47,081 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:47,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:48:47,082 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:48:47,083 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:48:47,083 INFO L87 Difference]: Start difference. First operand 48742 states and 65127 transitions. Second operand 5 states. [2018-09-10 11:49:00,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:49:00,482 INFO L93 Difference]: Finished difference Result 133022 states and 186307 transitions. [2018-09-10 11:49:00,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:49:00,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2018-09-10 11:49:00,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:49:00,790 INFO L225 Difference]: With dead ends: 133022 [2018-09-10 11:49:00,791 INFO L226 Difference]: Without dead ends: 84286 [2018-09-10 11:49:00,930 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 631 GetRequests, 618 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:49:00,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84286 states. [2018-09-10 11:49:02,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84286 to 80276. [2018-09-10 11:49:02,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80276 states. [2018-09-10 11:49:02,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80276 states to 80276 states and 109715 transitions. [2018-09-10 11:49:02,686 INFO L78 Accepts]: Start accepts. Automaton has 80276 states and 109715 transitions. Word has length 312 [2018-09-10 11:49:02,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:49:02,687 INFO L480 AbstractCegarLoop]: Abstraction has 80276 states and 109715 transitions. [2018-09-10 11:49:02,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:49:02,687 INFO L276 IsEmpty]: Start isEmpty. Operand 80276 states and 109715 transitions. [2018-09-10 11:49:02,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-09-10 11:49:02,726 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:49:02,727 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-10 11:49:02,727 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:49:02,727 INFO L82 PathProgramCache]: Analyzing trace with hash 479760798, now seen corresponding path program 1 times [2018-09-10 11:49:02,727 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:49:02,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:02,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:02,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:02,729 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:49:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 202 proven. 102 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 11:49:03,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:03,343 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 11:49:03,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:03,359 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:03,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-10 11:49:03,951 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:04,238 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 11:49:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 202 proven. 102 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 11:49:05,005 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:05,005 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 11:49:05,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:05,023 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:05,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-10 11:49:05,388 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 202 proven. 102 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 11:49:05,648 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:49:05,648 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 11:49:05,648 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:49:05,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:49:05,650 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:49:05,650 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:49:05,651 INFO L87 Difference]: Start difference. First operand 80276 states and 109715 transitions. Second operand 9 states. [2018-09-10 11:49:20,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:49:20,568 INFO L93 Difference]: Finished difference Result 194419 states and 305232 transitions. [2018-09-10 11:49:20,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 11:49:20,568 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 338 [2018-09-10 11:49:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:49:21,097 INFO L225 Difference]: With dead ends: 194419 [2018-09-10 11:49:21,098 INFO L226 Difference]: Without dead ends: 97003 [2018-09-10 11:49:21,391 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1368 GetRequests, 1348 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-10 11:49:21,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97003 states. [2018-09-10 11:49:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97003 to 91990. [2018-09-10 11:49:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91990 states. [2018-09-10 11:49:24,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91990 states to 91990 states and 126728 transitions. [2018-09-10 11:49:24,263 INFO L78 Accepts]: Start accepts. Automaton has 91990 states and 126728 transitions. Word has length 338 [2018-09-10 11:49:24,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:49:24,264 INFO L480 AbstractCegarLoop]: Abstraction has 91990 states and 126728 transitions. [2018-09-10 11:49:24,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:49:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 91990 states and 126728 transitions. [2018-09-10 11:49:24,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-09-10 11:49:24,300 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:49:24,301 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:49:24,301 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:49:24,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1503692484, now seen corresponding path program 1 times [2018-09-10 11:49:24,301 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:49:24,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:24,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:24,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:24,303 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:49:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:24,675 WARN L175 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:49:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 82 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:49:24,934 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:24,934 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:49:24,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:24,944 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:25,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-10 11:49:25,178 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 82 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:49:25,423 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:49:25,423 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 11:49:25,423 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:49:25,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:49:25,424 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:49:25,424 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:49:25,425 INFO L87 Difference]: Start difference. First operand 91990 states and 126728 transitions. Second operand 5 states. [2018-09-10 11:49:34,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:49:34,501 INFO L93 Difference]: Finished difference Result 183909 states and 254476 transitions. [2018-09-10 11:49:34,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:49:34,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 358 [2018-09-10 11:49:34,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:49:34,849 INFO L225 Difference]: With dead ends: 183909 [2018-09-10 11:49:34,849 INFO L226 Difference]: Without dead ends: 91925 [2018-09-10 11:49:35,103 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 710 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:49:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91925 states. [2018-09-10 11:49:36,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91925 to 88863. [2018-09-10 11:49:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88863 states. [2018-09-10 11:49:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88863 states to 88863 states and 111688 transitions. [2018-09-10 11:49:36,568 INFO L78 Accepts]: Start accepts. Automaton has 88863 states and 111688 transitions. Word has length 358 [2018-09-10 11:49:36,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:49:36,569 INFO L480 AbstractCegarLoop]: Abstraction has 88863 states and 111688 transitions. [2018-09-10 11:49:36,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:49:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 88863 states and 111688 transitions. [2018-09-10 11:49:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-09-10 11:49:36,598 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:49:36,598 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 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] [2018-09-10 11:49:36,599 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:49:36,599 INFO L82 PathProgramCache]: Analyzing trace with hash -241034131, now seen corresponding path program 1 times [2018-09-10 11:49:36,599 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:49:36,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:36,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:36,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:36,600 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:49:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 241 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-10 11:49:37,306 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:37,306 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:49:38,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:38,539 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:38,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-10 11:49:38,958 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 241 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-10 11:49:39,166 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:39,166 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:49:39,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:39,182 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:39,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-10 11:49:39,625 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 241 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-10 11:49:39,876 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:49:39,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-09-10 11:49:39,877 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:49:39,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:49:39,879 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:49:39,879 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:49:39,879 INFO L87 Difference]: Start difference. First operand 88863 states and 111688 transitions. Second operand 9 states. [2018-09-10 11:49:57,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:49:57,511 INFO L93 Difference]: Finished difference Result 195230 states and 261582 transitions. [2018-09-10 11:49:57,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 11:49:57,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 423 [2018-09-10 11:49:57,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:49:57,929 INFO L225 Difference]: With dead ends: 195230 [2018-09-10 11:49:57,930 INFO L226 Difference]: Without dead ends: 106373 [2018-09-10 11:49:58,221 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1710 GetRequests, 1689 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2018-09-10 11:49:58,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106373 states. [2018-09-10 11:50:00,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106373 to 103607. [2018-09-10 11:50:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103607 states. [2018-09-10 11:50:00,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103607 states to 103607 states and 128033 transitions. [2018-09-10 11:50:00,744 INFO L78 Accepts]: Start accepts. Automaton has 103607 states and 128033 transitions. Word has length 423 [2018-09-10 11:50:00,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:50:00,745 INFO L480 AbstractCegarLoop]: Abstraction has 103607 states and 128033 transitions. [2018-09-10 11:50:00,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:50:00,745 INFO L276 IsEmpty]: Start isEmpty. Operand 103607 states and 128033 transitions. [2018-09-10 11:50:00,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2018-09-10 11:50:00,774 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:50:00,775 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:50:00,775 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:50:00,775 INFO L82 PathProgramCache]: Analyzing trace with hash -356203637, now seen corresponding path program 1 times [2018-09-10 11:50:00,775 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:50:00,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:00,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:00,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:00,776 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:50:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 340 proven. 245 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-10 11:50:01,737 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:50:01,737 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:50:01,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:01,745 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:50:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:01,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:50:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 562 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-09-10 11:50:02,087 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:50:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 333 proven. 78 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-09-10 11:50:02,685 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:50:02,685 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:50:02,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:02,700 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:50:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:03,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:50:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 562 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-09-10 11:50:03,346 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:50:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 333 proven. 78 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-09-10 11:50:03,551 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:50:03,552 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 20 [2018-09-10 11:50:03,552 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:50:03,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-10 11:50:03,553 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-10 11:50:03,553 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-09-10 11:50:03,554 INFO L87 Difference]: Start difference. First operand 103607 states and 128033 transitions. Second operand 16 states. [2018-09-10 11:50:09,477 WARN L175 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 15 [2018-09-10 11:50:19,418 WARN L175 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-09-10 11:50:19,763 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2018-09-10 11:50:27,534 WARN L175 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2018-09-10 11:50:29,979 WARN L175 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-09-10 11:51:01,386 WARN L175 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-09-10 11:51:02,328 WARN L175 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 Received shutdown request... [2018-09-10 11:51:07,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-10 11:51:07,793 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:51:07,797 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:51:07,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:51:07 BoogieIcfgContainer [2018-09-10 11:51:07,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:51:07,799 INFO L168 Benchmark]: Toolchain (without parser) took 230616.71 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 485.9 MB in the end (delta: 934.8 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-09-10 11:51:07,800 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-09-10 11:51:07,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2426.50 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:51:07,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 256.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:51:07,802 INFO L168 Benchmark]: Boogie Preprocessor took 855.82 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 927.5 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-09-10 11:51:07,803 INFO L168 Benchmark]: RCFGBuilder took 9687.00 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 154.7 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -137.2 MB). Peak memory consumption was 724.0 MB. Max. memory is 7.1 GB. [2018-09-10 11:51:07,804 INFO L168 Benchmark]: TraceAbstraction took 217381.57 ms. Allocated memory was 2.6 GB in the beginning and 3.3 GB in the end (delta: 690.5 MB). Free memory was 2.5 GB in the beginning and 485.9 MB in the end (delta: 2.0 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-09-10 11:51:07,809 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 2426.50 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 256.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 855.82 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 927.5 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9687.00 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 154.7 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -137.2 MB). Peak memory consumption was 724.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217381.57 ms. Allocated memory was 2.6 GB in the beginning and 3.3 GB in the end (delta: 690.5 MB). Free memory was 2.5 GB in the beginning and 485.9 MB in the end (delta: 2.0 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was constructing difference of abstraction (103607states) and FLOYD_HOARE automaton (currently 107 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (282351 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 217.3s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 190.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4419 SDtfs, 60107 SDslu, 3412 SDs, 0 SdLazy, 100023 SolverSat, 21229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 144.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6840 GetRequests, 6625 SyntacticMatches, 20 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5301 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103607occurred in iteration=10, 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: 11.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 15190 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 5982 NumberOfCodeBlocks, 5982 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 9227 ConstructedInterpolants, 0 QuantifiedInterpolants, 9788948 SizeOfPredicates, 9 NumberOfNonLiveVariables, 5527 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 7595/9105 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/Problem12_label43_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-51-07-827.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label43_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-51-07-827.csv Completed graceful shutdown