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_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:47:42,103 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:47:42,105 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:47:42,117 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:47:42,117 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:47:42,118 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:47:42,120 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:47:42,122 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:47:42,123 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:47:42,124 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:47:42,125 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:47:42,126 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:47:42,126 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:47:42,128 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:47:42,129 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:47:42,130 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:47:42,131 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:47:42,132 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:47:42,135 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:47:42,136 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:47:42,137 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:47:42,139 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:47:42,147 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:47:42,147 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:47:42,147 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:47:42,148 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:47:42,150 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:47:42,150 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:47:42,154 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:47:42,156 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:47:42,156 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:47:42,160 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:47:42,161 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:47:42,161 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:47:42,164 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:47:42,165 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:47:42,165 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 11:47:42,185 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:47:42,185 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:47:42,186 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:47:42,186 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:47:42,187 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:47:42,187 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:47:42,187 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:47:42,187 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:47:42,187 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:47:42,188 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:47:42,188 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:47:42,191 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:47:42,191 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:47:42,191 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:47:42,191 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:47:42,192 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:47:42,192 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:47:42,192 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:47:42,192 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:47:42,192 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:47:42,193 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:47:42,193 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:47:42,193 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:47:42,193 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:47:42,195 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:47:42,195 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:47:42,196 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:47:42,196 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:47:42,196 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:47:42,196 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:47:42,197 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:47:42,197 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:47:42,197 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:47:42,256 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:47:42,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:47:42,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:47:42,275 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:47:42,275 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:47:42,276 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46_true-unreach-call.c [2018-09-10 11:47:42,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2d235d23/8fb2faef24cb4a8da09d4cd3d932a268/FLAG962d94460 [2018-09-10 11:47:43,088 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:47:43,089 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label46_true-unreach-call.c [2018-09-10 11:47:43,120 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2d235d23/8fb2faef24cb4a8da09d4cd3d932a268/FLAG962d94460 [2018-09-10 11:47:43,136 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2d235d23/8fb2faef24cb4a8da09d4cd3d932a268 [2018-09-10 11:47:43,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:47:43,152 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:47:43,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:47:43,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:47:43,163 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:47:43,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:47:43" (1/1) ... [2018-09-10 11:47:43,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4554d60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:43, skipping insertion in model container [2018-09-10 11:47:43,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:47:43" (1/1) ... [2018-09-10 11:47:43,490 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:47:44,439 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:47:44,463 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:47:45,174 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:47:45,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:45 WrapperNode [2018-09-10 11:47:45,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:47:45,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:47:45,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:47:45,397 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:47:45,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:45" (1/1) ... [2018-09-10 11:47:45,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:45" (1/1) ... [2018-09-10 11:47:45,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:47:45,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:47:45,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:47:45,671 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:47:46,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:45" (1/1) ... [2018-09-10 11:47:46,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:45" (1/1) ... [2018-09-10 11:47:46,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:45" (1/1) ... [2018-09-10 11:47:46,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:45" (1/1) ... [2018-09-10 11:47:46,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:45" (1/1) ... [2018-09-10 11:47:46,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:45" (1/1) ... [2018-09-10 11:47:46,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:45" (1/1) ... [2018-09-10 11:47:46,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:47:46,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:47:46,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:47:46,594 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:47:46,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:45" (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 11:47:46,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:47:46,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:47:46,673 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 11:47:46,673 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 11:47:46,673 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 11:47:46,674 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 11:47:46,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:47:46,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:47:46,674 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 11:47:46,675 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 11:47:46,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:47:46,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:47:46,675 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 11:47:46,675 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 11:47:59,810 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:47:59,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:47:59 BoogieIcfgContainer [2018-09-10 11:47:59,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:47:59,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:47:59,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:47:59,816 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:47:59,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:47:43" (1/3) ... [2018-09-10 11:47:59,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75924b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:47:59, skipping insertion in model container [2018-09-10 11:47:59,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:45" (2/3) ... [2018-09-10 11:47:59,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75924b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:47:59, skipping insertion in model container [2018-09-10 11:47:59,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:47:59" (3/3) ... [2018-09-10 11:47:59,820 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label46_true-unreach-call.c [2018-09-10 11:47:59,829 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:47:59,839 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:47:59,897 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:47:59,897 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:47:59,897 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:47:59,897 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:47:59,898 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:47:59,898 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:47:59,898 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:47:59,898 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:47:59,898 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:47:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-10 11:47:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-10 11:47:59,959 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:59,961 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:47:59,962 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 11:47:59,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1973084988, now seen corresponding path program 1 times [2018-09-10 11:47:59,970 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:00,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:00,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:00,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:00,021 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:00,507 WARN L175 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:48:00,627 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 11:48:00,630 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:48:00,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:48:00,630 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:00,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:48:00,652 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:48:00,652 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:48:00,655 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-10 11:48:08,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:08,570 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-10 11:48:08,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:48:08,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-09-10 11:48:08,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:08,610 INFO L225 Difference]: With dead ends: 2446 [2018-09-10 11:48:08,610 INFO L226 Difference]: Without dead ends: 1604 [2018-09-10 11:48:08,623 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 11:48:08,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-10 11:48:08,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-10 11:48:08,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-10 11:48:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-09-10 11:48:08,793 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 68 [2018-09-10 11:48:08,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:08,794 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-09-10 11:48:08,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:48:08,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-09-10 11:48:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-10 11:48:08,804 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:08,805 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:48:08,805 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 11:48:08,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1293744738, now seen corresponding path program 1 times [2018-09-10 11:48:08,809 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:08,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:08,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:08,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:08,811 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:09,156 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:48:09,157 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:48:09,157 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 11:48:09,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:09,171 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:48:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:09,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:48:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:48:09,480 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:48:09,660 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:48:09,693 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:48:09,694 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2018-09-10 11:48:09,694 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:09,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:48:09,696 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:48:09,696 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:48:09,696 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 3 states. [2018-09-10 11:48:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:21,316 INFO L93 Difference]: Finished difference Result 4738 states and 8562 transitions. [2018-09-10 11:48:21,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:48:21,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2018-09-10 11:48:21,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:21,339 INFO L225 Difference]: With dead ends: 4738 [2018-09-10 11:48:21,340 INFO L226 Difference]: Without dead ends: 3140 [2018-09-10 11:48:21,348 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 290 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 11:48:21,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2018-09-10 11:48:21,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3140. [2018-09-10 11:48:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3140 states. [2018-09-10 11:48:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 5269 transitions. [2018-09-10 11:48:21,439 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 5269 transitions. Word has length 144 [2018-09-10 11:48:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:21,440 INFO L480 AbstractCegarLoop]: Abstraction has 3140 states and 5269 transitions. [2018-09-10 11:48:21,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:48:21,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 5269 transitions. [2018-09-10 11:48:21,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-10 11:48:21,447 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:21,447 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 11:48:21,447 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 11:48:21,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1167159210, now seen corresponding path program 1 times [2018-09-10 11:48:21,448 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:21,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:21,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:21,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:21,449 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:48:21,741 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:48:21,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:48:21,741 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:21,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:48:21,742 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:48:21,742 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:48:21,743 INFO L87 Difference]: Start difference. First operand 3140 states and 5269 transitions. Second operand 5 states. [2018-09-10 11:48:34,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:34,439 INFO L93 Difference]: Finished difference Result 9545 states and 16221 transitions. [2018-09-10 11:48:34,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:48:34,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2018-09-10 11:48:34,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:34,483 INFO L225 Difference]: With dead ends: 9545 [2018-09-10 11:48:34,484 INFO L226 Difference]: Without dead ends: 6411 [2018-09-10 11:48:34,496 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 11:48:34,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2018-09-10 11:48:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 6350. [2018-09-10 11:48:34,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6350 states. [2018-09-10 11:48:34,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6350 states to 6350 states and 9814 transitions. [2018-09-10 11:48:34,704 INFO L78 Accepts]: Start accepts. Automaton has 6350 states and 9814 transitions. Word has length 148 [2018-09-10 11:48:34,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:34,706 INFO L480 AbstractCegarLoop]: Abstraction has 6350 states and 9814 transitions. [2018-09-10 11:48:34,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:48:34,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6350 states and 9814 transitions. [2018-09-10 11:48:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-09-10 11:48:34,710 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:34,710 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:34,711 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 11:48:34,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1558508457, now seen corresponding path program 1 times [2018-09-10 11:48:34,711 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:34,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:34,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:34,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:34,714 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:48:35,097 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:48:35,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:48:35,097 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:35,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:48:35,099 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:48:35,099 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:48:35,100 INFO L87 Difference]: Start difference. First operand 6350 states and 9814 transitions. Second operand 5 states. [2018-09-10 11:48:55,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:55,764 INFO L93 Difference]: Finished difference Result 25286 states and 40901 transitions. [2018-09-10 11:48:55,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:48:55,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2018-09-10 11:48:55,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:55,858 INFO L225 Difference]: With dead ends: 25286 [2018-09-10 11:48:55,858 INFO L226 Difference]: Without dead ends: 18942 [2018-09-10 11:48:55,903 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:48:55,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18942 states. [2018-09-10 11:48:56,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18942 to 18876. [2018-09-10 11:48:56,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18876 states. [2018-09-10 11:48:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18876 states to 18876 states and 27672 transitions. [2018-09-10 11:48:56,414 INFO L78 Accepts]: Start accepts. Automaton has 18876 states and 27672 transitions. Word has length 159 [2018-09-10 11:48:56,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:56,415 INFO L480 AbstractCegarLoop]: Abstraction has 18876 states and 27672 transitions. [2018-09-10 11:48:56,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:48:56,415 INFO L276 IsEmpty]: Start isEmpty. Operand 18876 states and 27672 transitions. [2018-09-10 11:48:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-10 11:48:56,421 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:56,421 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:56,421 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 11:48:56,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1131052914, now seen corresponding path program 1 times [2018-09-10 11:48:56,422 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:56,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:56,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:56,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:56,423 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:56,703 WARN L175 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:48:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:48:57,079 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:48:57,079 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:48:57,079 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:57,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:48:57,080 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:48:57,080 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:48:57,083 INFO L87 Difference]: Start difference. First operand 18876 states and 27672 transitions. Second operand 6 states. [2018-09-10 11:49:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:49:06,445 INFO L93 Difference]: Finished difference Result 49385 states and 75940 transitions. [2018-09-10 11:49:06,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:49:06,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2018-09-10 11:49:06,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:49:06,610 INFO L225 Difference]: With dead ends: 49385 [2018-09-10 11:49:06,610 INFO L226 Difference]: Without dead ends: 30515 [2018-09-10 11:49:06,663 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:49:06,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30515 states. [2018-09-10 11:49:07,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30515 to 30316. [2018-09-10 11:49:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30316 states. [2018-09-10 11:49:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30316 states to 30316 states and 44015 transitions. [2018-09-10 11:49:07,393 INFO L78 Accepts]: Start accepts. Automaton has 30316 states and 44015 transitions. Word has length 182 [2018-09-10 11:49:07,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:49:07,394 INFO L480 AbstractCegarLoop]: Abstraction has 30316 states and 44015 transitions. [2018-09-10 11:49:07,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:49:07,394 INFO L276 IsEmpty]: Start isEmpty. Operand 30316 states and 44015 transitions. [2018-09-10 11:49:07,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-09-10 11:49:07,400 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:49:07,400 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:07,400 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 11:49:07,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1122871851, now seen corresponding path program 1 times [2018-09-10 11:49:07,401 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:49:07,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:07,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:07,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:07,402 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:49:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:07,657 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:49:07,657 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:49:07,658 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:49:07,658 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:49:07,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:49:07,659 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:49:07,659 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:49:07,659 INFO L87 Difference]: Start difference. First operand 30316 states and 44015 transitions. Second operand 4 states. [2018-09-10 11:49:20,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:49:20,622 INFO L93 Difference]: Finished difference Result 79065 states and 116577 transitions. [2018-09-10 11:49:20,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:49:20,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2018-09-10 11:49:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:49:20,821 INFO L225 Difference]: With dead ends: 79065 [2018-09-10 11:49:20,822 INFO L226 Difference]: Without dead ends: 48755 [2018-09-10 11:49:20,906 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 11:49:20,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48755 states. [2018-09-10 11:49:21,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48755 to 48742. [2018-09-10 11:49:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48742 states. [2018-09-10 11:49:21,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48742 states to 48742 states and 65127 transitions. [2018-09-10 11:49:21,807 INFO L78 Accepts]: Start accepts. Automaton has 48742 states and 65127 transitions. Word has length 217 [2018-09-10 11:49:21,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:49:21,808 INFO L480 AbstractCegarLoop]: Abstraction has 48742 states and 65127 transitions. [2018-09-10 11:49:21,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:49:21,808 INFO L276 IsEmpty]: Start isEmpty. Operand 48742 states and 65127 transitions. [2018-09-10 11:49:21,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-09-10 11:49:21,847 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:49:21,848 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:49:21,848 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 11:49:21,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1051367888, now seen corresponding path program 1 times [2018-09-10 11:49:21,849 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:49:21,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:21,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:21,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:21,850 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:49:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:22,207 WARN L175 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:49:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 122 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:49:22,697 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:22,698 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 11:49:23,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:23,069 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:23,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:49:23,449 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 122 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:49:23,777 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:49:23,777 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:49:23,777 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:49:23,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:49:23,778 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:49:23,778 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:49:23,779 INFO L87 Difference]: Start difference. First operand 48742 states and 65127 transitions. Second operand 5 states. [2018-09-10 11:49:36,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:49:36,900 INFO L93 Difference]: Finished difference Result 133022 states and 186307 transitions. [2018-09-10 11:49:36,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:49:36,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2018-09-10 11:49:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:49:37,214 INFO L225 Difference]: With dead ends: 133022 [2018-09-10 11:49:37,214 INFO L226 Difference]: Without dead ends: 84286 [2018-09-10 11:49:37,325 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 658 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:49:37,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84286 states. [2018-09-10 11:49:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84286 to 80276. [2018-09-10 11:49:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80276 states. [2018-09-10 11:49:39,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80276 states to 80276 states and 109715 transitions. [2018-09-10 11:49:39,460 INFO L78 Accepts]: Start accepts. Automaton has 80276 states and 109715 transitions. Word has length 332 [2018-09-10 11:49:39,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:49:39,460 INFO L480 AbstractCegarLoop]: Abstraction has 80276 states and 109715 transitions. [2018-09-10 11:49:39,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:49:39,461 INFO L276 IsEmpty]: Start isEmpty. Operand 80276 states and 109715 transitions. [2018-09-10 11:49:39,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-09-10 11:49:39,503 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:49:39,504 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, 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, 2, 2, 2, 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 11:49:39,504 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 11:49:39,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1573491730, now seen corresponding path program 1 times [2018-09-10 11:49:39,505 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:49:39,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:39,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:39,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:39,506 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:49:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 262 proven. 102 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 11:49:40,129 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:40,129 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 11:49:40,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:40,145 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:40,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:49:40,635 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 262 proven. 102 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 11:49:40,983 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:40,983 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 11:49:40,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:40,999 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:41,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:49:41,459 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:41,629 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 262 proven. 102 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 11:49:41,631 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:49:41,631 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 11:49:41,631 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:49:41,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:49:41,632 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:49:41,632 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:49:41,633 INFO L87 Difference]: Start difference. First operand 80276 states and 109715 transitions. Second operand 9 states. [2018-09-10 11:49:57,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:49:57,979 INFO L93 Difference]: Finished difference Result 194419 states and 305232 transitions. [2018-09-10 11:49:57,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 11:49:57,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 358 [2018-09-10 11:49:57,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:49:58,467 INFO L225 Difference]: With dead ends: 194419 [2018-09-10 11:49:58,467 INFO L226 Difference]: Without dead ends: 97003 [2018-09-10 11:49:58,693 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 1428 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-10 11:49:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97003 states. [2018-09-10 11:50:00,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97003 to 91990. [2018-09-10 11:50:00,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91990 states. [2018-09-10 11:50:00,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91990 states to 91990 states and 126728 transitions. [2018-09-10 11:50:00,783 INFO L78 Accepts]: Start accepts. Automaton has 91990 states and 126728 transitions. Word has length 358 [2018-09-10 11:50:00,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:50:00,784 INFO L480 AbstractCegarLoop]: Abstraction has 91990 states and 126728 transitions. [2018-09-10 11:50:00,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:50:00,784 INFO L276 IsEmpty]: Start isEmpty. Operand 91990 states and 126728 transitions. [2018-09-10 11:50:00,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-09-10 11:50:00,828 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:50:00,828 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:50:00,828 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 11:50:00,829 INFO L82 PathProgramCache]: Analyzing trace with hash -175910452, now seen corresponding path program 1 times [2018-09-10 11:50:00,829 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:50:00,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:00,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:00,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:00,830 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:50:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:01,139 WARN L175 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:50:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 122 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:50:01,279 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:50:01,280 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 11:50:01,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:01,293 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:50:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:01,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:50:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:50:01,575 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:50:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 122 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:50:02,555 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:50:02,555 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 11:50:02,555 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:50:02,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:50:02,556 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:50:02,556 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:50:02,556 INFO L87 Difference]: Start difference. First operand 91990 states and 126728 transitions. Second operand 5 states. [2018-09-10 11:50:10,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:50:10,513 INFO L93 Difference]: Finished difference Result 183909 states and 254476 transitions. [2018-09-10 11:50:10,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:50:10,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 378 [2018-09-10 11:50:10,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:50:10,910 INFO L225 Difference]: With dead ends: 183909 [2018-09-10 11:50:10,911 INFO L226 Difference]: Without dead ends: 91925 [2018-09-10 11:50:11,174 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 750 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:50:11,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91925 states. [2018-09-10 11:50:13,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91925 to 88863. [2018-09-10 11:50:13,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88863 states. [2018-09-10 11:50:13,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88863 states to 88863 states and 111688 transitions. [2018-09-10 11:50:13,594 INFO L78 Accepts]: Start accepts. Automaton has 88863 states and 111688 transitions. Word has length 378 [2018-09-10 11:50:13,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:50:13,594 INFO L480 AbstractCegarLoop]: Abstraction has 88863 states and 111688 transitions. [2018-09-10 11:50:13,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:50:13,595 INFO L276 IsEmpty]: Start isEmpty. Operand 88863 states and 111688 transitions. [2018-09-10 11:50:13,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-09-10 11:50:13,620 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:50:13,621 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, 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, 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 11:50:13,621 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 11:50:13,621 INFO L82 PathProgramCache]: Analyzing trace with hash 902169533, now seen corresponding path program 1 times [2018-09-10 11:50:13,621 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:50:13,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:13,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:13,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:13,622 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:50:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 301 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-10 11:50:14,286 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:50:14,286 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 11:50:14,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:14,294 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:50:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:14,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:50:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 456 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:50:15,037 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:50:15,580 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 301 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-10 11:50:15,601 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:50:15,602 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 11:50:15,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:15,617 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:50:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:15,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:50:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 456 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-10 11:50:16,095 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:50:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 301 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-10 11:50:17,100 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:50:17,101 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-09-10 11:50:17,101 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:50:17,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:50:17,102 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:50:17,103 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:50:17,103 INFO L87 Difference]: Start difference. First operand 88863 states and 111688 transitions. Second operand 9 states. [2018-09-10 11:50:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:50:37,631 INFO L93 Difference]: Finished difference Result 195230 states and 261582 transitions. [2018-09-10 11:50:37,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 11:50:37,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 443 [2018-09-10 11:50:37,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:50:38,166 INFO L225 Difference]: With dead ends: 195230 [2018-09-10 11:50:38,166 INFO L226 Difference]: Without dead ends: 106373 [2018-09-10 11:50:38,457 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1790 GetRequests, 1769 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2018-09-10 11:50:38,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106373 states. [2018-09-10 11:50:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106373 to 103607. [2018-09-10 11:50:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103607 states. [2018-09-10 11:50:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103607 states to 103607 states and 128033 transitions. [2018-09-10 11:50:41,074 INFO L78 Accepts]: Start accepts. Automaton has 103607 states and 128033 transitions. Word has length 443 [2018-09-10 11:50:41,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:50:41,075 INFO L480 AbstractCegarLoop]: Abstraction has 103607 states and 128033 transitions. [2018-09-10 11:50:41,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:50:41,075 INFO L276 IsEmpty]: Start isEmpty. Operand 103607 states and 128033 transitions. [2018-09-10 11:50:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-09-10 11:50:41,096 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:50:41,097 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, 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, 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 11:50:41,097 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 11:50:41,098 INFO L82 PathProgramCache]: Analyzing trace with hash 2018930971, now seen corresponding path program 1 times [2018-09-10 11:50:41,098 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:50:41,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:41,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:41,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:41,099 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:50:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:41,853 WARN L175 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-10 11:50:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 420 proven. 245 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-10 11:50:42,475 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:50:42,475 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 11:50:42,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:42,483 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:50:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:42,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:50:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 622 proven. 2 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-09-10 11:50:42,868 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:50:43,234 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 413 proven. 78 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-09-10 11:50:43,255 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:50:43,255 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 11:50:43,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:43,841 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:50:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:44,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:50:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 622 proven. 2 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-09-10 11:50:44,387 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:50:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 413 proven. 78 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-09-10 11:50:44,640 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:50:44,640 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 20 [2018-09-10 11:50:44,640 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:50:44,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-10 11:50:44,642 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-10 11:50:44,642 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-09-10 11:50:44,642 INFO L87 Difference]: Start difference. First operand 103607 states and 128033 transitions. Second operand 16 states. [2018-09-10 11:50:56,164 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-09-10 11:51:00,354 WARN L175 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2018-09-10 11:51:05,451 WARN L175 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-09-10 11:51:09,013 WARN L175 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2018-09-10 11:51:11,599 WARN L175 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-09-10 11:51:15,690 WARN L175 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-09-10 11:51:20,801 WARN L175 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 Received shutdown request... [2018-09-10 11:51:32,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-10 11:51:32,561 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:51:32,568 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:51:32,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:51:32 BoogieIcfgContainer [2018-09-10 11:51:32,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:51:32,569 INFO L168 Benchmark]: Toolchain (without parser) took 229419.90 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-10 11:51:32,570 INFO L168 Benchmark]: CDTParser took 0.24 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 11:51:32,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2242.30 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 11:51:32,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 273.92 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 11:51:32,573 INFO L168 Benchmark]: Boogie Preprocessor took 922.67 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 942.7 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 11:51:32,574 INFO L168 Benchmark]: RCFGBuilder took 13217.64 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 147.3 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -129.2 MB). Peak memory consumption was 735.0 MB. Max. memory is 7.1 GB. [2018-09-10 11:51:32,575 INFO L168 Benchmark]: TraceAbstraction took 212756.02 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: -93.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-10 11:51:32,580 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2242.30 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 273.92 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 922.67 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 942.7 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 13217.64 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 147.3 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -129.2 MB). Peak memory consumption was 735.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212756.02 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: -93.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 195]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 195). Cancelled while BasicCegarLoop was constructing difference of abstraction (103607states) and FLOYD_HOARE automaton (currently 102 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (135581 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 212.6s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 184.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4331 SDtfs, 55660 SDslu, 3068 SDs, 0 SdLazy, 90333 SolverSat, 18347 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 142.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7189 GetRequests, 6979 SyntacticMatches, 20 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4806 ImplicationChecksByTransitivity, 12.1s 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: 11.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 15190 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 6382 NumberOfCodeBlocks, 6382 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 9807 ConstructedInterpolants, 0 QuantifiedInterpolants, 10539468 SizeOfPredicates, 9 NumberOfNonLiveVariables, 5698 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 8955/10485 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_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-51-32-594.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-51-32-594.csv Completed graceful shutdown