java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:58:28,066 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:58:28,068 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:58:28,089 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:58:28,089 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:58:28,091 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:58:28,093 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:58:28,095 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:58:28,096 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:58:28,097 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:58:28,100 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:58:28,100 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:58:28,101 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:58:28,102 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:58:28,104 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:58:28,104 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:58:28,105 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:58:28,107 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:58:28,110 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:58:28,111 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:58:28,113 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:58:28,114 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:58:28,117 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:58:28,117 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:58:28,117 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:58:28,118 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:58:28,120 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:58:28,120 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:58:28,121 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:58:28,123 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:58:28,123 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:58:28,124 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 20:58:28,124 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 20:58:28,124 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 20:58:28,126 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 20:58:28,126 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 20:58:28,127 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:58:28,142 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:58:28,142 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:58:28,143 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:58:28,144 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:58:28,144 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:58:28,144 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:58:28,145 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:58:28,145 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:58:28,145 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:58:28,145 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:58:28,145 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:58:28,146 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:58:28,146 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:58:28,146 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:58:28,146 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:58:28,146 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:58:28,147 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:58:28,147 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:58:28,147 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:58:28,147 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:58:28,147 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:58:28,148 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:58:28,148 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:58:28,148 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:58:28,148 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:58:28,148 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:58:28,148 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:58:28,149 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:58:28,202 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:58:28,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:58:28,219 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:58:28,221 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:58:28,221 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:58:28,222 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label06_true-unreach-call.c [2018-10-23 20:58:28,287 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/706a588dc/8f1b408f8e97413185453c220cdedfa9/FLAG15ee4244b [2018-10-23 20:58:29,224 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:58:29,227 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label06_true-unreach-call.c [2018-10-23 20:58:29,272 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/706a588dc/8f1b408f8e97413185453c220cdedfa9/FLAG15ee4244b [2018-10-23 20:58:29,288 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/706a588dc/8f1b408f8e97413185453c220cdedfa9 [2018-10-23 20:58:29,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:58:29,303 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:58:29,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:58:29,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:58:29,308 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:58:29,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:58:29" (1/1) ... [2018-10-23 20:58:29,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe263dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:29, skipping insertion in model container [2018-10-23 20:58:29,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:58:29" (1/1) ... [2018-10-23 20:58:29,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:58:29,597 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:58:31,487 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:58:31,492 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:58:32,578 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:58:32,630 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:58:32,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:32 WrapperNode [2018-10-23 20:58:32,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:58:32,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:58:32,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:58:32,633 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:58:32,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:32" (1/1) ... [2018-10-23 20:58:32,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:32" (1/1) ... [2018-10-23 20:58:33,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:58:33,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:58:33,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:58:33,751 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:58:33,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:32" (1/1) ... [2018-10-23 20:58:33,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:32" (1/1) ... [2018-10-23 20:58:33,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:32" (1/1) ... [2018-10-23 20:58:33,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:32" (1/1) ... [2018-10-23 20:58:34,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:32" (1/1) ... [2018-10-23 20:58:34,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:32" (1/1) ... [2018-10-23 20:58:34,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:32" (1/1) ... [2018-10-23 20:58:34,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:58:34,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:58:34,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:58:34,464 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:58:34,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 20:58:34,533 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:58:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:58:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:58:51,994 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:58:51,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:58:51 BoogieIcfgContainer [2018-10-23 20:58:51,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:58:51,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:58:51,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:58:51,999 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:58:52,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:58:29" (1/3) ... [2018-10-23 20:58:52,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c333b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:58:52, skipping insertion in model container [2018-10-23 20:58:52,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:58:32" (2/3) ... [2018-10-23 20:58:52,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c333b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:58:52, skipping insertion in model container [2018-10-23 20:58:52,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:58:51" (3/3) ... [2018-10-23 20:58:52,003 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label06_true-unreach-call.c [2018-10-23 20:58:52,014 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:58:52,025 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:58:52,044 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:58:52,093 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:58:52,094 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:58:52,095 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:58:52,095 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:58:52,095 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:58:52,095 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:58:52,095 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:58:52,095 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:58:52,095 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:58:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 20:58:52,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-23 20:58:52,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:58:52,155 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:58:52,157 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:58:52,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:58:52,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1306950314, now seen corresponding path program 1 times [2018-10-23 20:58:52,167 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:58:52,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:58:52,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:52,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:58:52,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:58:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:58:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:58:52,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:58:52,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:58:52,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:58:52,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:58:52,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:58:52,808 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 20:59:17,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:59:17,433 INFO L93 Difference]: Finished difference Result 6324 states and 12081 transitions. [2018-10-23 20:59:17,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:59:17,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-10-23 20:59:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:59:17,498 INFO L225 Difference]: With dead ends: 6324 [2018-10-23 20:59:17,499 INFO L226 Difference]: Without dead ends: 4568 [2018-10-23 20:59:17,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:59:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4568 states. [2018-10-23 20:59:17,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4568 to 4563. [2018-10-23 20:59:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-23 20:59:17,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7487 transitions. [2018-10-23 20:59:17,735 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7487 transitions. Word has length 55 [2018-10-23 20:59:17,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:59:17,736 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 7487 transitions. [2018-10-23 20:59:17,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:59:17,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7487 transitions. [2018-10-23 20:59:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-23 20:59:17,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:59:17,749 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:59:17,749 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:59:17,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:59:17,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1408201555, now seen corresponding path program 1 times [2018-10-23 20:59:17,751 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:59:17,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:59:17,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:17,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:59:17,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:59:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:59:18,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:59:18,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:59:18,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:59:18,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:59:18,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:59:18,020 INFO L87 Difference]: Start difference. First operand 4563 states and 7487 transitions. Second operand 4 states. [2018-10-23 20:59:48,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:59:48,012 INFO L93 Difference]: Finished difference Result 17544 states and 29003 transitions. [2018-10-23 20:59:48,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:59:48,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2018-10-23 20:59:48,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:59:48,081 INFO L225 Difference]: With dead ends: 17544 [2018-10-23 20:59:48,081 INFO L226 Difference]: Without dead ends: 12983 [2018-10-23 20:59:48,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:59:48,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2018-10-23 20:59:48,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 8662. [2018-10-23 20:59:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8662 states. [2018-10-23 20:59:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 13841 transitions. [2018-10-23 20:59:48,313 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 13841 transitions. Word has length 133 [2018-10-23 20:59:48,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:59:48,313 INFO L481 AbstractCegarLoop]: Abstraction has 8662 states and 13841 transitions. [2018-10-23 20:59:48,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:59:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 13841 transitions. [2018-10-23 20:59:48,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-23 20:59:48,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:59:48,324 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:59:48,325 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:59:48,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:59:48,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1752615795, now seen corresponding path program 1 times [2018-10-23 20:59:48,325 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:59:48,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:59:48,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:48,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:59:48,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:59:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:59:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:59:48,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:59:48,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:59:48,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:59:48,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:59:48,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:59:48,668 INFO L87 Difference]: Start difference. First operand 8662 states and 13841 transitions. Second operand 4 states. [2018-10-23 21:00:10,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:00:10,032 INFO L93 Difference]: Finished difference Result 33991 states and 54526 transitions. [2018-10-23 21:00:10,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:00:10,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-10-23 21:00:10,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:00:10,102 INFO L225 Difference]: With dead ends: 33991 [2018-10-23 21:00:10,103 INFO L226 Difference]: Without dead ends: 25331 [2018-10-23 21:00:10,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:00:10,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25331 states. [2018-10-23 21:00:10,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25331 to 25321. [2018-10-23 21:00:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25321 states. [2018-10-23 21:00:10,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25321 states to 25321 states and 34467 transitions. [2018-10-23 21:00:10,567 INFO L78 Accepts]: Start accepts. Automaton has 25321 states and 34467 transitions. Word has length 153 [2018-10-23 21:00:10,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:00:10,567 INFO L481 AbstractCegarLoop]: Abstraction has 25321 states and 34467 transitions. [2018-10-23 21:00:10,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:00:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 25321 states and 34467 transitions. [2018-10-23 21:00:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-23 21:00:10,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:00:10,570 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:00:10,570 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:00:10,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:00:10,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1710485834, now seen corresponding path program 1 times [2018-10-23 21:00:10,571 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:00:10,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:00:10,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:10,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:10,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:00:10,920 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 21:00:11,561 WARN L179 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-23 21:00:11,794 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-23 21:00:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:00:12,060 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:00:12,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 21:00:12,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 21:00:12,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 21:00:12,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:00:12,062 INFO L87 Difference]: Start difference. First operand 25321 states and 34467 transitions. Second operand 6 states. [2018-10-23 21:00:42,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:00:42,861 INFO L93 Difference]: Finished difference Result 82151 states and 109854 transitions. [2018-10-23 21:00:42,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 21:00:42,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-10-23 21:00:42,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:00:42,960 INFO L225 Difference]: With dead ends: 82151 [2018-10-23 21:00:42,960 INFO L226 Difference]: Without dead ends: 56832 [2018-10-23 21:00:42,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 21:00:43,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56832 states. [2018-10-23 21:00:43,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56832 to 55390. [2018-10-23 21:00:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55390 states. [2018-10-23 21:00:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55390 states to 55390 states and 72762 transitions. [2018-10-23 21:00:43,713 INFO L78 Accepts]: Start accepts. Automaton has 55390 states and 72762 transitions. Word has length 160 [2018-10-23 21:00:43,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:00:43,714 INFO L481 AbstractCegarLoop]: Abstraction has 55390 states and 72762 transitions. [2018-10-23 21:00:43,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 21:00:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 55390 states and 72762 transitions. [2018-10-23 21:00:43,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-23 21:00:43,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:00:43,719 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:00:43,720 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:00:43,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:00:43,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1479259088, now seen corresponding path program 1 times [2018-10-23 21:00:43,720 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:00:43,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:00:43,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:43,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:43,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:00:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:00:44,235 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-23 21:00:44,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:00:44,235 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 21:00:44,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:00:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:00:44,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 21:00:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:00:44,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:00:44,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 21:00:44,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:00:44,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:00:44,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:00:44,566 INFO L87 Difference]: Start difference. First operand 55390 states and 72762 transitions. Second operand 4 states. [2018-10-23 21:01:10,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:01:10,123 INFO L93 Difference]: Finished difference Result 190169 states and 250350 transitions. [2018-10-23 21:01:10,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:01:10,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 291 [2018-10-23 21:01:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:01:10,367 INFO L225 Difference]: With dead ends: 190169 [2018-10-23 21:01:10,367 INFO L226 Difference]: Without dead ends: 134781 [2018-10-23 21:01:10,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:01:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134781 states. [2018-10-23 21:01:12,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134781 to 96376. [2018-10-23 21:01:12,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96376 states. [2018-10-23 21:01:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96376 states to 96376 states and 117972 transitions. [2018-10-23 21:01:12,868 INFO L78 Accepts]: Start accepts. Automaton has 96376 states and 117972 transitions. Word has length 291 [2018-10-23 21:01:12,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:01:12,869 INFO L481 AbstractCegarLoop]: Abstraction has 96376 states and 117972 transitions. [2018-10-23 21:01:12,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:01:12,869 INFO L276 IsEmpty]: Start isEmpty. Operand 96376 states and 117972 transitions. [2018-10-23 21:01:12,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-10-23 21:01:12,878 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:01:12,879 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 21:01:12,879 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:01:12,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:01:12,881 INFO L82 PathProgramCache]: Analyzing trace with hash -244394191, now seen corresponding path program 1 times [2018-10-23 21:01:12,881 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:01:12,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:01:12,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:12,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:12,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:01:13,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:01:13,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:01:13,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:01:13,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:01:13,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:01:13,454 INFO L87 Difference]: Start difference. First operand 96376 states and 117972 transitions. Second operand 4 states. [2018-10-23 21:01:34,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:01:34,198 INFO L93 Difference]: Finished difference Result 218701 states and 268708 transitions. [2018-10-23 21:01:34,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:01:34,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 452 [2018-10-23 21:01:34,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:01:34,340 INFO L225 Difference]: With dead ends: 218701 [2018-10-23 21:01:34,340 INFO L226 Difference]: Without dead ends: 122327 [2018-10-23 21:01:34,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:01:34,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122327 states. [2018-10-23 21:01:35,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122327 to 122316. [2018-10-23 21:01:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122316 states. [2018-10-23 21:01:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122316 states to 122316 states and 140168 transitions. [2018-10-23 21:01:35,761 INFO L78 Accepts]: Start accepts. Automaton has 122316 states and 140168 transitions. Word has length 452 [2018-10-23 21:01:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:01:35,762 INFO L481 AbstractCegarLoop]: Abstraction has 122316 states and 140168 transitions. [2018-10-23 21:01:35,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:01:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 122316 states and 140168 transitions. [2018-10-23 21:01:35,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2018-10-23 21:01:35,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:01:35,800 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:01:35,801 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:01:35,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:01:35,801 INFO L82 PathProgramCache]: Analyzing trace with hash -49250025, now seen corresponding path program 1 times [2018-10-23 21:01:35,801 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:01:35,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:01:35,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:35,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:01:35,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:01:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:01:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-23 21:01:37,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:01:37,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:01:37,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:01:37,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:01:37,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:01:37,706 INFO L87 Difference]: Start difference. First operand 122316 states and 140168 transitions. Second operand 4 states. [2018-10-23 21:01:59,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:01:59,703 INFO L93 Difference]: Finished difference Result 276063 states and 318046 transitions. [2018-10-23 21:01:59,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:01:59,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 912 [2018-10-23 21:01:59,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:01:59,900 INFO L225 Difference]: With dead ends: 276063 [2018-10-23 21:01:59,901 INFO L226 Difference]: Without dead ends: 153749 [2018-10-23 21:01:59,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:02:00,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153749 states. [2018-10-23 21:02:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153749 to 148270. [2018-10-23 21:02:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148270 states. [2018-10-23 21:02:01,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148270 states to 148270 states and 165750 transitions. [2018-10-23 21:02:01,374 INFO L78 Accepts]: Start accepts. Automaton has 148270 states and 165750 transitions. Word has length 912 [2018-10-23 21:02:01,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:02:01,375 INFO L481 AbstractCegarLoop]: Abstraction has 148270 states and 165750 transitions. [2018-10-23 21:02:01,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:02:01,375 INFO L276 IsEmpty]: Start isEmpty. Operand 148270 states and 165750 transitions. [2018-10-23 21:02:01,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2018-10-23 21:02:01,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:02:01,394 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:02:01,394 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:02:01,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:02:01,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1931694652, now seen corresponding path program 1 times [2018-10-23 21:02:01,395 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:02:01,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:02:01,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:01,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:02:01,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:02:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-23 21:02:03,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:02:03,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:02:03,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:02:03,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:02:03,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:02:03,969 INFO L87 Difference]: Start difference. First operand 148270 states and 165750 transitions. Second operand 4 states. Received shutdown request... [2018-10-23 21:02:23,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:02:23,850 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:02:23,856 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:02:23,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:02:23 BoogieIcfgContainer [2018-10-23 21:02:23,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:02:23,858 INFO L168 Benchmark]: Toolchain (without parser) took 234556.34 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 940.6 MB in the end (delta: 441.6 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-23 21:02:23,859 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 21:02:23,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3327.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 989.4 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:02:23,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 1117.88 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 842.5 MB). Free memory was 989.4 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. [2018-10-23 21:02:23,861 INFO L168 Benchmark]: Boogie Preprocessor took 713.04 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 114.7 MB). Peak memory consumption was 114.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:02:23,862 INFO L168 Benchmark]: RCFGBuilder took 17531.00 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 282.6 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -397.1 MB). Peak memory consumption was 868.8 MB. Max. memory is 7.1 GB. [2018-10-23 21:02:23,863 INFO L168 Benchmark]: TraceAbstraction took 211861.23 ms. Allocated memory was 2.6 GB in the beginning and 3.5 GB in the end (delta: 815.8 MB). Free memory was 2.4 GB in the beginning and 940.6 MB in the end (delta: 1.5 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-23 21:02:23,868 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3327.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 989.4 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1117.88 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 842.5 MB). Free memory was 989.4 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 713.04 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 114.7 MB). Peak memory consumption was 114.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17531.00 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 282.6 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -397.1 MB). Peak memory consumption was 868.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211861.23 ms. Allocated memory was 2.6 GB in the beginning and 3.5 GB in the end (delta: 815.8 MB). Free memory was 2.4 GB in the beginning and 940.6 MB in the end (delta: 1.5 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: 178]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 178). Cancelled while BasicCegarLoop was constructing difference of abstraction (148270states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (281498 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 211.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 196.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9332 SDtfs, 32124 SDslu, 2851 SDs, 0 SdLazy, 72447 SolverSat, 19342 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 167.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 303 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148270occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 49673 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 3364 NumberOfCodeBlocks, 3364 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3355 ConstructedInterpolants, 0 QuantifiedInterpolants, 3395088 SizeOfPredicates, 1 NumberOfNonLiveVariables, 353 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 1814/1818 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown