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/Problem15_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:10:19,364 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:10:19,368 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:10:19,388 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:10:19,388 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:10:19,389 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:10:19,390 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:10:19,392 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:10:19,394 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:10:19,395 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:10:19,395 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:10:19,396 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:10:19,397 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:10:19,398 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:10:19,399 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:10:19,400 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:10:19,401 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:10:19,403 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:10:19,410 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:10:19,412 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:10:19,416 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:10:19,421 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:10:19,423 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:10:19,426 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:10:19,426 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:10:19,427 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:10:19,428 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:10:19,432 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:10:19,433 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:10:19,437 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:10:19,437 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:10:19,438 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:10:19,438 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:10:19,438 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:10:19,439 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:10:19,442 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:10:19,442 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 12:10:19,472 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:10:19,476 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:10:19,477 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:10:19,477 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:10:19,477 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:10:19,480 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:10:19,480 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:10:19,480 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:10:19,480 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:10:19,481 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:10:19,481 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:10:19,482 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:10:19,482 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:10:19,482 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:10:19,482 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:10:19,483 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:10:19,484 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:10:19,484 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:10:19,484 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:10:19,484 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:10:19,484 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:10:19,485 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:10:19,485 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:10:19,485 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:10:19,485 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:10:19,486 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:10:19,487 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:10:19,487 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:10:19,487 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:10:19,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:10:19,488 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:10:19,488 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:10:19,488 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:10:19,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:10:19,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:10:19,565 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:10:19,567 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:10:19,567 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:10:19,568 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-09-10 12:10:19,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f554486/c826e96365194bd0890df78f77b6a06e/FLAGde2b56cfd [2018-09-10 12:10:20,303 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:10:20,304 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-09-10 12:10:20,330 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f554486/c826e96365194bd0890df78f77b6a06e/FLAGde2b56cfd [2018-09-10 12:10:20,351 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f554486/c826e96365194bd0890df78f77b6a06e [2018-09-10 12:10:20,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:10:20,369 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:10:20,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:10:20,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:10:20,379 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:10:20,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:10:20" (1/1) ... [2018-09-10 12:10:20,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab40953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:10:20, skipping insertion in model container [2018-09-10 12:10:20,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:10:20" (1/1) ... [2018-09-10 12:10:20,690 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:10:21,326 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:10:21,344 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:10:21,656 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:10:21,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:10:21 WrapperNode [2018-09-10 12:10:21,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:10:21,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:10:21,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:10:21,815 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:10:21,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:10:21" (1/1) ... [2018-09-10 12:10:21,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:10:21" (1/1) ... [2018-09-10 12:10:22,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:10:22,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:10:22,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:10:22,080 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:10:22,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:10:21" (1/1) ... [2018-09-10 12:10:22,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:10:21" (1/1) ... [2018-09-10 12:10:22,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:10:21" (1/1) ... [2018-09-10 12:10:22,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:10:21" (1/1) ... [2018-09-10 12:10:22,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:10:21" (1/1) ... [2018-09-10 12:10:22,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:10:21" (1/1) ... [2018-09-10 12:10:22,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:10:21" (1/1) ... [2018-09-10 12:10:22,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:10:22,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:10:22,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:10:22,705 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:10:22,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:10:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:10:22,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:10:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:10:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:10:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:10:22,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:10:22,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:10:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:10:22,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:10:22,776 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:10:22,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:10:30,030 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:10:30,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:10:30 BoogieIcfgContainer [2018-09-10 12:10:30,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:10:30,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:10:30,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:10:30,036 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:10:30,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:10:20" (1/3) ... [2018-09-10 12:10:30,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f1098b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:10:30, skipping insertion in model container [2018-09-10 12:10:30,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:10:21" (2/3) ... [2018-09-10 12:10:30,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f1098b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:10:30, skipping insertion in model container [2018-09-10 12:10:30,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:10:30" (3/3) ... [2018-09-10 12:10:30,040 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label24_true-unreach-call.c [2018-09-10 12:10:30,050 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:10:30,061 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:10:30,125 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:10:30,126 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:10:30,126 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:10:30,126 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:10:30,126 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:10:30,126 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:10:30,127 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:10:30,127 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:10:30,127 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:10:30,159 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-10 12:10:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-10 12:10:30,173 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:30,175 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] [2018-09-10 12:10:30,176 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:10:30,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1048527273, now seen corresponding path program 1 times [2018-09-10 12:10:30,185 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:30,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:30,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:30,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:30,233 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:30,642 WARN L175 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:10:30,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:10:30,712 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:10:30,712 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:10:30,712 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:10:30,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:10:30,734 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:10:30,735 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:10:30,738 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-09-10 12:10:34,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:34,505 INFO L93 Difference]: Finished difference Result 1198 states and 2158 transitions. [2018-09-10 12:10:34,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:10:34,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-09-10 12:10:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:34,532 INFO L225 Difference]: With dead ends: 1198 [2018-09-10 12:10:34,533 INFO L226 Difference]: Without dead ends: 758 [2018-09-10 12:10:34,542 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 12:10:34,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2018-09-10 12:10:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2018-09-10 12:10:34,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2018-09-10 12:10:34,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1328 transitions. [2018-09-10 12:10:34,697 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1328 transitions. Word has length 45 [2018-09-10 12:10:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:34,697 INFO L480 AbstractCegarLoop]: Abstraction has 754 states and 1328 transitions. [2018-09-10 12:10:34,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:10:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1328 transitions. [2018-09-10 12:10:34,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-10 12:10:34,705 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:34,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:10:34,706 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:10:34,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1392241716, now seen corresponding path program 1 times [2018-09-10 12:10:34,707 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:34,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:34,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:34,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:34,709 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:10:35,220 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:10:35,220 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:10:35,221 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:10:35,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:10:35,227 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:10:35,227 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:10:35,228 INFO L87 Difference]: Start difference. First operand 754 states and 1328 transitions. Second operand 6 states. [2018-09-10 12:10:46,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:46,278 INFO L93 Difference]: Finished difference Result 2146 states and 3813 transitions. [2018-09-10 12:10:46,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:10:46,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-09-10 12:10:46,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:46,296 INFO L225 Difference]: With dead ends: 2146 [2018-09-10 12:10:46,296 INFO L226 Difference]: Without dead ends: 1398 [2018-09-10 12:10:46,302 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:10:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2018-09-10 12:10:46,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1382. [2018-09-10 12:10:46,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2018-09-10 12:10:46,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 2175 transitions. [2018-09-10 12:10:46,374 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 2175 transitions. Word has length 119 [2018-09-10 12:10:46,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:46,375 INFO L480 AbstractCegarLoop]: Abstraction has 1382 states and 2175 transitions. [2018-09-10 12:10:46,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:10:46,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 2175 transitions. [2018-09-10 12:10:46,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-10 12:10:46,383 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:46,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:10:46,386 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:10:46,387 INFO L82 PathProgramCache]: Analyzing trace with hash 13057476, now seen corresponding path program 1 times [2018-09-10 12:10:46,387 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:46,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:46,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:46,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:46,390 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:10:46,584 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:10:46,585 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:10:46,585 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:10:46,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:10:46,586 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:10:46,586 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:10:46,586 INFO L87 Difference]: Start difference. First operand 1382 states and 2175 transitions. Second operand 6 states. [2018-09-10 12:10:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:55,375 INFO L93 Difference]: Finished difference Result 3405 states and 5451 transitions. [2018-09-10 12:10:55,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:10:55,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-09-10 12:10:55,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:55,394 INFO L225 Difference]: With dead ends: 3405 [2018-09-10 12:10:55,394 INFO L226 Difference]: Without dead ends: 2029 [2018-09-10 12:10:55,402 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:10:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2018-09-10 12:10:55,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2006. [2018-09-10 12:10:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2006 states. [2018-09-10 12:10:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2895 transitions. [2018-09-10 12:10:55,475 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2895 transitions. Word has length 131 [2018-09-10 12:10:55,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:55,476 INFO L480 AbstractCegarLoop]: Abstraction has 2006 states and 2895 transitions. [2018-09-10 12:10:55,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:10:55,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2895 transitions. [2018-09-10 12:10:55,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-10 12:10:55,481 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:55,482 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:10:55,482 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:10:55,482 INFO L82 PathProgramCache]: Analyzing trace with hash -679138064, now seen corresponding path program 1 times [2018-09-10 12:10:55,482 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:55,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:55,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:55,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:55,486 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:10:55,990 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:10:55,991 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:10:55,991 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:10:55,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:10:55,992 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:10:55,992 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:10:55,993 INFO L87 Difference]: Start difference. First operand 2006 states and 2895 transitions. Second operand 6 states. [2018-09-10 12:11:06,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:11:06,566 INFO L93 Difference]: Finished difference Result 6522 states and 9680 transitions. [2018-09-10 12:11:06,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:11:06,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-09-10 12:11:06,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:11:06,593 INFO L225 Difference]: With dead ends: 6522 [2018-09-10 12:11:06,593 INFO L226 Difference]: Without dead ends: 4522 [2018-09-10 12:11:06,610 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:11:06,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2018-09-10 12:11:06,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4440. [2018-09-10 12:11:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4440 states. [2018-09-10 12:11:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 5665 transitions. [2018-09-10 12:11:06,763 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 5665 transitions. Word has length 137 [2018-09-10 12:11:06,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:11:06,763 INFO L480 AbstractCegarLoop]: Abstraction has 4440 states and 5665 transitions. [2018-09-10 12:11:06,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:11:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 5665 transitions. [2018-09-10 12:11:06,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-09-10 12:11:06,768 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:11:06,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:11:06,768 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:11:06,769 INFO L82 PathProgramCache]: Analyzing trace with hash 993600349, now seen corresponding path program 1 times [2018-09-10 12:11:06,769 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:11:06,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:06,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:06,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:06,770 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:11:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:07,150 WARN L175 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:11:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:11:07,258 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:11:07,258 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:11:07,258 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:11:07,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:11:07,259 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:11:07,259 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:11:07,260 INFO L87 Difference]: Start difference. First operand 4440 states and 5665 transitions. Second operand 6 states. [2018-09-10 12:11:13,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:11:13,854 INFO L93 Difference]: Finished difference Result 10489 states and 13767 transitions. [2018-09-10 12:11:13,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:11:13,865 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-09-10 12:11:13,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:11:13,897 INFO L225 Difference]: With dead ends: 10489 [2018-09-10 12:11:13,897 INFO L226 Difference]: Without dead ends: 6055 [2018-09-10 12:11:13,916 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:11:13,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6055 states. [2018-09-10 12:11:14,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6055 to 6006. [2018-09-10 12:11:14,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6006 states. [2018-09-10 12:11:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6006 states to 6006 states and 7476 transitions. [2018-09-10 12:11:14,064 INFO L78 Accepts]: Start accepts. Automaton has 6006 states and 7476 transitions. Word has length 172 [2018-09-10 12:11:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:11:14,065 INFO L480 AbstractCegarLoop]: Abstraction has 6006 states and 7476 transitions. [2018-09-10 12:11:14,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:11:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 6006 states and 7476 transitions. [2018-09-10 12:11:14,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-09-10 12:11:14,072 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:11:14,072 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:11:14,073 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:11:14,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1515525461, now seen corresponding path program 1 times [2018-09-10 12:11:14,073 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:11:14,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:14,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:14,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:14,074 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:11:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:14,323 WARN L175 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-09-10 12:11:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-10 12:11:14,342 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:11:14,342 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:11:14,342 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:11:14,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:11:14,343 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:11:14,343 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:11:14,344 INFO L87 Difference]: Start difference. First operand 6006 states and 7476 transitions. Second operand 3 states. [2018-09-10 12:11:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:11:19,286 INFO L93 Difference]: Finished difference Result 17050 states and 21824 transitions. [2018-09-10 12:11:19,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:11:19,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2018-09-10 12:11:19,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:11:19,332 INFO L225 Difference]: With dead ends: 17050 [2018-09-10 12:11:19,332 INFO L226 Difference]: Without dead ends: 11050 [2018-09-10 12:11:19,362 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:11:19,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11050 states. [2018-09-10 12:11:19,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11050 to 11023. [2018-09-10 12:11:19,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11023 states. [2018-09-10 12:11:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11023 states to 11023 states and 13899 transitions. [2018-09-10 12:11:19,596 INFO L78 Accepts]: Start accepts. Automaton has 11023 states and 13899 transitions. Word has length 213 [2018-09-10 12:11:19,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:11:19,597 INFO L480 AbstractCegarLoop]: Abstraction has 11023 states and 13899 transitions. [2018-09-10 12:11:19,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:11:19,597 INFO L276 IsEmpty]: Start isEmpty. Operand 11023 states and 13899 transitions. [2018-09-10 12:11:19,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-09-10 12:11:19,610 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:11:19,610 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:11:19,610 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 12:11:19,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1691819665, now seen corresponding path program 1 times [2018-09-10 12:11:19,611 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:11:19,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:19,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:19,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:19,612 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:11:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-10 12:11:20,081 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:20,081 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:11:20,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:20,093 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:20,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:20,979 WARN L175 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-09-10 12:11:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-10 12:11:21,043 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 76 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:11:22,036 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:11:22,037 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-10 12:11:22,037 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:11:22,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:11:22,038 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:11:22,038 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:11:22,039 INFO L87 Difference]: Start difference. First operand 11023 states and 13899 transitions. Second operand 5 states. [2018-09-10 12:11:33,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:11:33,708 INFO L93 Difference]: Finished difference Result 23469 states and 29564 transitions. [2018-09-10 12:11:33,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:11:33,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2018-09-10 12:11:33,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:11:33,779 INFO L225 Difference]: With dead ends: 23469 [2018-09-10 12:11:33,779 INFO L226 Difference]: Without dead ends: 12452 [2018-09-10 12:11:33,836 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 449 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:11:33,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12452 states. [2018-09-10 12:11:34,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12452 to 12163. [2018-09-10 12:11:34,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12163 states. [2018-09-10 12:11:34,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12163 states to 12163 states and 15177 transitions. [2018-09-10 12:11:34,175 INFO L78 Accepts]: Start accepts. Automaton has 12163 states and 15177 transitions. Word has length 226 [2018-09-10 12:11:34,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:11:34,175 INFO L480 AbstractCegarLoop]: Abstraction has 12163 states and 15177 transitions. [2018-09-10 12:11:34,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:11:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 12163 states and 15177 transitions. [2018-09-10 12:11:34,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-09-10 12:11:34,191 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:11:34,191 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:11:34,192 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 12:11:34,192 INFO L82 PathProgramCache]: Analyzing trace with hash -164335781, now seen corresponding path program 1 times [2018-09-10 12:11:34,192 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:11:34,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:34,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:34,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:34,193 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:11:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 79 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-10 12:11:34,934 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:34,934 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:11:34,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:34,951 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:35,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-10 12:11:35,459 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-10 12:11:36,471 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:11:36,471 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2018-09-10 12:11:36,471 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:11:36,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:11:36,472 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:11:36,472 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:11:36,473 INFO L87 Difference]: Start difference. First operand 12163 states and 15177 transitions. Second operand 5 states. [2018-09-10 12:11:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:11:42,688 INFO L93 Difference]: Finished difference Result 35189 states and 44757 transitions. [2018-09-10 12:11:42,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 12:11:42,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2018-09-10 12:11:42,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:11:42,770 INFO L225 Difference]: With dead ends: 35189 [2018-09-10 12:11:42,770 INFO L226 Difference]: Without dead ends: 23340 [2018-09-10 12:11:42,796 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 527 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:11:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23340 states. [2018-09-10 12:11:43,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23340 to 22913. [2018-09-10 12:11:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22913 states. [2018-09-10 12:11:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22913 states to 22913 states and 26966 transitions. [2018-09-10 12:11:43,253 INFO L78 Accepts]: Start accepts. Automaton has 22913 states and 26966 transitions. Word has length 265 [2018-09-10 12:11:43,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:11:43,254 INFO L480 AbstractCegarLoop]: Abstraction has 22913 states and 26966 transitions. [2018-09-10 12:11:43,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:11:43,254 INFO L276 IsEmpty]: Start isEmpty. Operand 22913 states and 26966 transitions. [2018-09-10 12:11:43,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-09-10 12:11:43,277 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:11:43,277 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:11:43,277 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 12:11:43,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1280284773, now seen corresponding path program 1 times [2018-09-10 12:11:43,278 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:11:43,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:43,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:43,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:43,279 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:11:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:44,380 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-10 12:11:44,811 WARN L175 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-10 12:11:45,113 WARN L175 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-10 12:11:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 198 proven. 169 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:11:45,331 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:45,331 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:11:45,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:45,339 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:45,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 307 proven. 26 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-10 12:11:45,682 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 124 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:11:46,151 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:46,151 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:11:46,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:46,167 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:46,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 257 proven. 26 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-10 12:11:46,720 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:47,111 WARN L175 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 12:11:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 124 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:11:47,481 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:11:47,482 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-09-10 12:11:47,482 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:11:47,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-10 12:11:47,484 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-10 12:11:47,484 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2018-09-10 12:11:47,484 INFO L87 Difference]: Start difference. First operand 22913 states and 26966 transitions. Second operand 14 states. [2018-09-10 12:11:48,219 WARN L175 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-09-10 12:12:19,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:12:19,540 INFO L93 Difference]: Finished difference Result 62357 states and 76082 transitions. [2018-09-10 12:12:19,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-10 12:12:19,541 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 322 [2018-09-10 12:12:19,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:12:19,668 INFO L225 Difference]: With dead ends: 62357 [2018-09-10 12:12:19,668 INFO L226 Difference]: Without dead ends: 38869 [2018-09-10 12:12:19,745 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1298 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=527, Invalid=1729, Unknown=0, NotChecked=0, Total=2256 [2018-09-10 12:12:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38869 states. [2018-09-10 12:12:20,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38869 to 36416. [2018-09-10 12:12:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36416 states. [2018-09-10 12:12:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36416 states to 36416 states and 43150 transitions. [2018-09-10 12:12:20,356 INFO L78 Accepts]: Start accepts. Automaton has 36416 states and 43150 transitions. Word has length 322 [2018-09-10 12:12:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:12:20,357 INFO L480 AbstractCegarLoop]: Abstraction has 36416 states and 43150 transitions. [2018-09-10 12:12:20,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-10 12:12:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 36416 states and 43150 transitions. [2018-09-10 12:12:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-09-10 12:12:20,384 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:12:20,385 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:12:20,385 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 12:12:20,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1448554482, now seen corresponding path program 1 times [2018-09-10 12:12:20,386 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:12:20,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:12:20,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:20,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:12:20,387 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:12:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 198 proven. 173 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:12:21,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:12:21,336 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 12:12:21,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:21,344 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:12:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:21,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:12:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 311 proven. 26 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-10 12:12:21,815 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:12:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 124 proven. 247 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:12:22,412 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:12:22,413 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:12:22,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:22,429 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:12:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:22,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:12:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 261 proven. 26 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-10 12:12:23,211 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:12:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 124 proven. 247 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:12:23,986 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:12:23,986 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-09-10 12:12:23,986 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:12:23,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-10 12:12:23,988 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-10 12:12:23,988 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2018-09-10 12:12:23,988 INFO L87 Difference]: Start difference. First operand 36416 states and 43150 transitions. Second operand 14 states. [2018-09-10 12:12:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:12:56,506 INFO L93 Difference]: Finished difference Result 76930 states and 91932 transitions. [2018-09-10 12:12:56,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-10 12:12:56,511 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 407 [2018-09-10 12:12:56,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:12:56,630 INFO L225 Difference]: With dead ends: 76930 [2018-09-10 12:12:56,630 INFO L226 Difference]: Without dead ends: 39627 [2018-09-10 12:12:56,711 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1686 GetRequests, 1635 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=524, Invalid=1732, Unknown=0, NotChecked=0, Total=2256 [2018-09-10 12:12:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39627 states. [2018-09-10 12:12:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39627 to 36693. [2018-09-10 12:12:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36693 states. [2018-09-10 12:12:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36693 states to 36693 states and 43116 transitions. [2018-09-10 12:12:57,328 INFO L78 Accepts]: Start accepts. Automaton has 36693 states and 43116 transitions. Word has length 407 [2018-09-10 12:12:57,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:12:57,329 INFO L480 AbstractCegarLoop]: Abstraction has 36693 states and 43116 transitions. [2018-09-10 12:12:57,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-10 12:12:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 36693 states and 43116 transitions. [2018-09-10 12:12:57,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-09-10 12:12:57,355 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:12:57,355 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:12:57,356 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 12:12:57,356 INFO L82 PathProgramCache]: Analyzing trace with hash -323884306, now seen corresponding path program 1 times [2018-09-10 12:12:57,356 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:12:57,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:12:57,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:57,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:12:57,357 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:12:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 125 proven. 169 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 12:12:58,424 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:12:58,424 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:12:58,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:58,433 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:12:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:58,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:12:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-10 12:12:59,076 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:12:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 198 proven. 80 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-09-10 12:12:59,409 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:12:59,410 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:12:59,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:59,425 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:12:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:59,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:13:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-10 12:13:00,021 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:13:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 122 proven. 171 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-10 12:13:00,630 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:13:00,631 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 18 [2018-09-10 12:13:00,631 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:13:00,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 12:13:00,632 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 12:13:00,633 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2018-09-10 12:13:00,633 INFO L87 Difference]: Start difference. First operand 36693 states and 43116 transitions. Second operand 11 states. [2018-09-10 12:13:23,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:13:23,120 INFO L93 Difference]: Finished difference Result 113863 states and 144230 transitions. [2018-09-10 12:13:23,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-10 12:13:23,120 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 464 [2018-09-10 12:13:23,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:13:23,400 INFO L225 Difference]: With dead ends: 113863 [2018-09-10 12:13:23,400 INFO L226 Difference]: Without dead ends: 77429 [2018-09-10 12:13:23,534 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1932 GetRequests, 1868 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=727, Invalid=3179, Unknown=0, NotChecked=0, Total=3906 [2018-09-10 12:13:23,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77429 states. [2018-09-10 12:13:24,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77429 to 73536. [2018-09-10 12:13:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73536 states. [2018-09-10 12:13:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73536 states to 73536 states and 86452 transitions. [2018-09-10 12:13:24,816 INFO L78 Accepts]: Start accepts. Automaton has 73536 states and 86452 transitions. Word has length 464 [2018-09-10 12:13:24,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:13:24,817 INFO L480 AbstractCegarLoop]: Abstraction has 73536 states and 86452 transitions. [2018-09-10 12:13:24,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-10 12:13:24,817 INFO L276 IsEmpty]: Start isEmpty. Operand 73536 states and 86452 transitions. [2018-09-10 12:13:24,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-09-10 12:13:24,850 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:13:24,851 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:13:24,851 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:13:24,852 INFO L82 PathProgramCache]: Analyzing trace with hash 2050754305, now seen corresponding path program 1 times [2018-09-10 12:13:24,852 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:13:24,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:13:24,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:13:24,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:13:24,853 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:13:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:13:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 195 proven. 86 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-09-10 12:13:25,636 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:13:25,636 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:13:25,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:13:25,645 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:13:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:13:25,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:13:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-10 12:13:26,364 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:13:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-10 12:13:26,638 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:13:26,638 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:13:26,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:13:26,658 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:13:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:13:27,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:13:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-10 12:13:27,385 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:13:28,056 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-10 12:13:28,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:13:28,058 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 13 [2018-09-10 12:13:28,059 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:13:28,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 12:13:28,060 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 12:13:28,060 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:13:28,060 INFO L87 Difference]: Start difference. First operand 73536 states and 86452 transitions. Second operand 11 states. [2018-09-10 12:13:40,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:13:40,723 INFO L93 Difference]: Finished difference Result 150911 states and 180273 transitions. [2018-09-10 12:13:40,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-10 12:13:40,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 552 [2018-09-10 12:13:40,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:13:40,934 INFO L225 Difference]: With dead ends: 150911 [2018-09-10 12:13:40,934 INFO L226 Difference]: Without dead ends: 77689 [2018-09-10 12:13:41,124 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2247 GetRequests, 2212 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2018-09-10 12:13:41,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77689 states. [2018-09-10 12:13:42,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77689 to 75942. [2018-09-10 12:13:42,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75942 states. [2018-09-10 12:13:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75942 states to 75942 states and 84763 transitions. [2018-09-10 12:13:42,454 INFO L78 Accepts]: Start accepts. Automaton has 75942 states and 84763 transitions. Word has length 552 [2018-09-10 12:13:42,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:13:42,455 INFO L480 AbstractCegarLoop]: Abstraction has 75942 states and 84763 transitions. [2018-09-10 12:13:42,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-10 12:13:42,455 INFO L276 IsEmpty]: Start isEmpty. Operand 75942 states and 84763 transitions. [2018-09-10 12:13:42,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-09-10 12:13:42,476 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:13:42,477 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:13:42,477 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:13:42,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1217759884, now seen corresponding path program 1 times [2018-09-10 12:13:42,478 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:13:42,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:13:42,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:13:42,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:13:42,479 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:13:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:13:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-09-10 12:13:42,907 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:13:42,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:13:42,908 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:13:42,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:13:42,909 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:13:42,909 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:13:42,909 INFO L87 Difference]: Start difference. First operand 75942 states and 84763 transitions. Second operand 3 states. [2018-09-10 12:13:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:13:47,615 INFO L93 Difference]: Finished difference Result 181431 states and 206706 transitions. [2018-09-10 12:13:47,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:13:47,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 553 [2018-09-10 12:13:47,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:13:47,865 INFO L225 Difference]: With dead ends: 181431 [2018-09-10 12:13:47,865 INFO L226 Difference]: Without dead ends: 83133 [2018-09-10 12:13:48,054 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:13:48,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83133 states. [2018-09-10 12:13:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83133 to 81144. [2018-09-10 12:13:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81144 states. [2018-09-10 12:13:49,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81144 states to 81144 states and 89601 transitions. [2018-09-10 12:13:49,296 INFO L78 Accepts]: Start accepts. Automaton has 81144 states and 89601 transitions. Word has length 553 [2018-09-10 12:13:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:13:49,297 INFO L480 AbstractCegarLoop]: Abstraction has 81144 states and 89601 transitions. [2018-09-10 12:13:49,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:13:49,297 INFO L276 IsEmpty]: Start isEmpty. Operand 81144 states and 89601 transitions. [2018-09-10 12:13:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-09-10 12:13:49,304 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:13:49,305 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:13:49,305 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:13:49,305 INFO L82 PathProgramCache]: Analyzing trace with hash 297701857, now seen corresponding path program 1 times [2018-09-10 12:13:49,305 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:13:49,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:13:49,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:13:49,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:13:49,306 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:13:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:13:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2018-09-10 12:13:49,870 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:13:49,870 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:13:49,870 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:13:49,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:13:49,872 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:13:49,872 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:13:49,872 INFO L87 Difference]: Start difference. First operand 81144 states and 89601 transitions. Second operand 4 states. [2018-09-10 12:13:55,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:13:55,128 INFO L93 Difference]: Finished difference Result 191192 states and 215849 transitions. [2018-09-10 12:13:55,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:13:55,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 558 [2018-09-10 12:13:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:13:55,432 INFO L225 Difference]: With dead ends: 191192 [2018-09-10 12:13:55,433 INFO L226 Difference]: Without dead ends: 112024 [2018-09-10 12:13:55,634 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 12:13:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112024 states. [2018-09-10 12:13:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112024 to 110315. [2018-09-10 12:13:56,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110315 states. [2018-09-10 12:13:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110315 states to 110315 states and 121264 transitions. [2018-09-10 12:13:57,164 INFO L78 Accepts]: Start accepts. Automaton has 110315 states and 121264 transitions. Word has length 558 [2018-09-10 12:13:57,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:13:57,165 INFO L480 AbstractCegarLoop]: Abstraction has 110315 states and 121264 transitions. [2018-09-10 12:13:57,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:13:57,165 INFO L276 IsEmpty]: Start isEmpty. Operand 110315 states and 121264 transitions. [2018-09-10 12:13:57,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2018-09-10 12:13:57,190 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:13:57,191 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:13:57,191 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:13:57,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1088889056, now seen corresponding path program 1 times [2018-09-10 12:13:57,192 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:13:57,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:13:57,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:13:57,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:13:57,193 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:13:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:13:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 831 trivial. 0 not checked. [2018-09-10 12:13:57,718 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:13:57,718 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:13:57,718 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:13:57,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:13:57,719 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:13:57,719 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:13:57,719 INFO L87 Difference]: Start difference. First operand 110315 states and 121264 transitions. Second operand 3 states. [2018-09-10 12:14:01,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:14:01,311 INFO L93 Difference]: Finished difference Result 182020 states and 200930 transitions. [2018-09-10 12:14:01,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:14:01,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 682 [2018-09-10 12:14:01,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:14:01,525 INFO L225 Difference]: With dead ends: 182020 [2018-09-10 12:14:01,525 INFO L226 Difference]: Without dead ends: 79135 [2018-09-10 12:14:01,717 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:14:01,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79135 states. [2018-09-10 12:14:02,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79135 to 76494. [2018-09-10 12:14:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76494 states. [2018-09-10 12:14:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76494 states to 76494 states and 82640 transitions. [2018-09-10 12:14:02,825 INFO L78 Accepts]: Start accepts. Automaton has 76494 states and 82640 transitions. Word has length 682 [2018-09-10 12:14:02,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:14:02,826 INFO L480 AbstractCegarLoop]: Abstraction has 76494 states and 82640 transitions. [2018-09-10 12:14:02,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:14:02,826 INFO L276 IsEmpty]: Start isEmpty. Operand 76494 states and 82640 transitions. [2018-09-10 12:14:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2018-09-10 12:14:02,860 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:14:02,861 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:14:02,861 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:14:02,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1915310461, now seen corresponding path program 1 times [2018-09-10 12:14:02,862 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:14:02,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:14:02,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:14:02,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:14:02,866 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:14:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:14:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 531 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-09-10 12:14:04,205 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:14:04,206 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:14:04,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:14:04,220 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:14:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:14:04,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-09-10 12:14:20,186 WARN L183 SmtUtils]: Removed 5 from assertion stack [2018-09-10 12:14:20,186 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-10 12:14:20,388 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:14:20,389 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:14:20,394 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:14:20,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:14:20 BoogieIcfgContainer [2018-09-10 12:14:20,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:14:20,396 INFO L168 Benchmark]: Toolchain (without parser) took 240029.28 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-09-10 12:14:20,397 INFO L168 Benchmark]: CDTParser took 0.19 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 12:14:20,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1443.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:14:20,398 INFO L168 Benchmark]: Boogie Procedure Inliner took 264.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-09-10 12:14:20,399 INFO L168 Benchmark]: Boogie Preprocessor took 625.48 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 890.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. [2018-09-10 12:14:20,400 INFO L168 Benchmark]: RCFGBuilder took 7326.57 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 319.7 MB). Peak memory consumption was 319.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:14:20,400 INFO L168 Benchmark]: TraceAbstraction took 230362.19 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-10 12:14:20,405 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1443.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 264.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 625.48 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 890.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7326.57 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 319.7 MB). Peak memory consumption was 319.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230362.19 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 121). Cancelled while BasicCegarLoop was analyzing trace of length 698 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 415. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 230.2s OverallTime, 16 OverallIterations, 6 TraceHistogramMax, 179.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4004 SDtfs, 31547 SDslu, 4800 SDs, 0 SdLazy, 59851 SolverSat, 10573 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 151.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8274 GetRequests, 8012 SyntacticMatches, 28 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2533 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110315occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 18283 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 8827 NumberOfCodeBlocks, 8827 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 12773 ConstructedInterpolants, 2 QuantifiedInterpolants, 22436268 SizeOfPredicates, 32 NumberOfNonLiveVariables, 6125 ConjunctsInSsa, 139 ConjunctsInUnsatCore, 35 InterpolantComputations, 12 PerfectInterpolantSequences, 8717/10826 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/Problem15_label24_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-14-20-420.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label24_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-14-20-420.csv Completed graceful shutdown