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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:33:39,143 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:33:39,145 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:33:39,157 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:33:39,157 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:33:39,158 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:33:39,159 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:33:39,161 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:33:39,163 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:33:39,164 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:33:39,165 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:33:39,165 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:33:39,166 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:33:39,167 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:33:39,168 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:33:39,169 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:33:39,170 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:33:39,172 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:33:39,174 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:33:39,176 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:33:39,177 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:33:39,178 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:33:39,181 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 21:33:39,197 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:33:39,226 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:33:39,227 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:33:39,228 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:33:39,228 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:33:39,229 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:33:39,229 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:33:39,229 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:33:39,231 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:33:39,231 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:33:39,231 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:33:39,231 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:33:39,231 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:33:39,231 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:33:39,232 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:33:39,232 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:33:39,232 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:33:39,232 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:33:39,232 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:33:39,233 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:33:39,233 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:33:39,233 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:33:39,233 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:33:39,233 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:33:39,234 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:33:39,234 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:33:39,234 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:33:39,234 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:33:39,234 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:33:39,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:33:39,316 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:33:39,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:33:39,321 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:33:39,321 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:33:39,322 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-11-06 21:33:39,386 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb48327e/92558c3ebbcf4062b18db296bba10f64/FLAG19968ea68 [2018-11-06 21:33:40,030 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:33:40,031 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-11-06 21:33:40,052 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb48327e/92558c3ebbcf4062b18db296bba10f64/FLAG19968ea68 [2018-11-06 21:33:40,067 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb48327e/92558c3ebbcf4062b18db296bba10f64 [2018-11-06 21:33:40,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:33:40,078 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:33:40,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:33:40,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:33:40,083 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:33:40,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:33:40" (1/1) ... [2018-11-06 21:33:40,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc7c7ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:33:40, skipping insertion in model container [2018-11-06 21:33:40,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:33:40" (1/1) ... [2018-11-06 21:33:40,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:33:40,206 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:33:41,073 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:33:41,078 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:33:41,411 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:33:41,433 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:33:41,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:33:41 WrapperNode [2018-11-06 21:33:41,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:33:41,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:33:41,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:33:41,436 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:33:41,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:33:41" (1/1) ... [2018-11-06 21:33:41,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:33:41" (1/1) ... [2018-11-06 21:33:41,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:33:41,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:33:41,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:33:41,820 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:33:41,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:33:41" (1/1) ... [2018-11-06 21:33:41,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:33:41" (1/1) ... [2018-11-06 21:33:41,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:33:41" (1/1) ... [2018-11-06 21:33:41,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:33:41" (1/1) ... [2018-11-06 21:33:41,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:33:41" (1/1) ... [2018-11-06 21:33:41,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:33:41" (1/1) ... [2018-11-06 21:33:42,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:33:41" (1/1) ... [2018-11-06 21:33:42,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:33:42,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:33:42,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:33:42,034 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:33:42,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:33:41" (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 [2018-11-06 21:33:42,102 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:33:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:33:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:33:48,055 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:33:48,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:33:48 BoogieIcfgContainer [2018-11-06 21:33:48,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:33:48,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:33:48,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:33:48,061 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:33:48,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:33:40" (1/3) ... [2018-11-06 21:33:48,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37555e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:33:48, skipping insertion in model container [2018-11-06 21:33:48,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:33:41" (2/3) ... [2018-11-06 21:33:48,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37555e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:33:48, skipping insertion in model container [2018-11-06 21:33:48,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:33:48" (3/3) ... [2018-11-06 21:33:48,065 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label49_true-unreach-call.c [2018-11-06 21:33:48,073 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:33:48,082 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:33:48,099 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:33:48,140 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:33:48,141 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:33:48,141 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:33:48,142 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:33:48,142 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:33:48,142 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:33:48,142 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:33:48,142 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:33:48,142 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:33:48,179 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-11-06 21:33:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-06 21:33:48,189 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:33:48,190 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] [2018-11-06 21:33:48,193 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:33:48,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:33:48,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1884671582, now seen corresponding path program 1 times [2018-11-06 21:33:48,201 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:33:48,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:33:48,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:33:48,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:33:48,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:33:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:33:48,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:33:48,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:33:48,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:33:48,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:33:48,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:33:48,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:33:48,774 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-11-06 21:33:54,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:33:54,481 INFO L93 Difference]: Finished difference Result 1472 states and 2722 transitions. [2018-11-06 21:33:54,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:33:54,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-11-06 21:33:54,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:33:54,513 INFO L225 Difference]: With dead ends: 1472 [2018-11-06 21:33:54,513 INFO L226 Difference]: Without dead ends: 1040 [2018-11-06 21:33:54,519 INFO L604 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 [2018-11-06 21:33:54,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2018-11-06 21:33:54,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1036. [2018-11-06 21:33:54,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2018-11-06 21:33:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1672 transitions. [2018-11-06 21:33:54,629 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1672 transitions. Word has length 53 [2018-11-06 21:33:54,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:33:54,630 INFO L480 AbstractCegarLoop]: Abstraction has 1036 states and 1672 transitions. [2018-11-06 21:33:54,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:33:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1672 transitions. [2018-11-06 21:33:54,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-06 21:33:54,640 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:33:54,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:33:54,641 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:33:54,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:33:54,641 INFO L82 PathProgramCache]: Analyzing trace with hash -151186266, now seen corresponding path program 1 times [2018-11-06 21:33:54,641 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:33:54,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:33:54,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:33:54,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:33:54,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:33:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:33:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:33:55,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:33:55,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:33:55,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:33:55,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:33:55,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:33:55,090 INFO L87 Difference]: Start difference. First operand 1036 states and 1672 transitions. Second operand 4 states. [2018-11-06 21:34:00,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:34:00,830 INFO L93 Difference]: Finished difference Result 3938 states and 6430 transitions. [2018-11-06 21:34:00,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:34:00,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2018-11-06 21:34:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:34:00,849 INFO L225 Difference]: With dead ends: 3938 [2018-11-06 21:34:00,850 INFO L226 Difference]: Without dead ends: 2904 [2018-11-06 21:34:00,859 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:34:00,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2018-11-06 21:34:00,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1938. [2018-11-06 21:34:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1938 states. [2018-11-06 21:34:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2805 transitions. [2018-11-06 21:34:00,935 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2805 transitions. Word has length 173 [2018-11-06 21:34:00,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:34:00,936 INFO L480 AbstractCegarLoop]: Abstraction has 1938 states and 2805 transitions. [2018-11-06 21:34:00,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:34:00,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2805 transitions. [2018-11-06 21:34:00,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-11-06 21:34:00,952 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:34:00,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:34:00,954 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:34:00,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:34:00,954 INFO L82 PathProgramCache]: Analyzing trace with hash -561273614, now seen corresponding path program 1 times [2018-11-06 21:34:00,954 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:34:00,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:34:00,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:00,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:34:00,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:34:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-06 21:34:01,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:34:01,551 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-06 21:34:01,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:34:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:34:01,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:34:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:34:01,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:34:01,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:34:01,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:34:01,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:34:01,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:34:01,804 INFO L87 Difference]: Start difference. First operand 1938 states and 2805 transitions. Second operand 4 states. [2018-11-06 21:34:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:34:07,877 INFO L93 Difference]: Finished difference Result 5979 states and 8473 transitions. [2018-11-06 21:34:07,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:34:07,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 250 [2018-11-06 21:34:07,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:34:07,900 INFO L225 Difference]: With dead ends: 5979 [2018-11-06 21:34:07,900 INFO L226 Difference]: Without dead ends: 4043 [2018-11-06 21:34:07,905 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:34:07,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4043 states. [2018-11-06 21:34:07,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4043 to 2838. [2018-11-06 21:34:07,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2838 states. [2018-11-06 21:34:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 3816 transitions. [2018-11-06 21:34:07,966 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 3816 transitions. Word has length 250 [2018-11-06 21:34:07,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:34:07,967 INFO L480 AbstractCegarLoop]: Abstraction has 2838 states and 3816 transitions. [2018-11-06 21:34:07,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:34:07,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 3816 transitions. [2018-11-06 21:34:07,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-11-06 21:34:07,974 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:34:07,975 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:34:07,975 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:34:07,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:34:07,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1922676989, now seen corresponding path program 1 times [2018-11-06 21:34:07,976 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:34:07,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:34:07,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:07,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:34:07,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:34:08,351 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-06 21:34:08,607 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-11-06 21:34:08,830 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-11-06 21:34:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-11-06 21:34:09,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:34:09,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:34:09,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:34:09,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:34:09,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:34:09,013 INFO L87 Difference]: Start difference. First operand 2838 states and 3816 transitions. Second operand 5 states. [2018-11-06 21:34:13,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:34:13,181 INFO L93 Difference]: Finished difference Result 6876 states and 8952 transitions. [2018-11-06 21:34:13,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:34:13,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2018-11-06 21:34:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:34:13,201 INFO L225 Difference]: With dead ends: 6876 [2018-11-06 21:34:13,201 INFO L226 Difference]: Without dead ends: 4040 [2018-11-06 21:34:13,206 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:34:13,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2018-11-06 21:34:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3739. [2018-11-06 21:34:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3739 states. [2018-11-06 21:34:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 4777 transitions. [2018-11-06 21:34:13,269 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 4777 transitions. Word has length 333 [2018-11-06 21:34:13,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:34:13,270 INFO L480 AbstractCegarLoop]: Abstraction has 3739 states and 4777 transitions. [2018-11-06 21:34:13,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:34:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 4777 transitions. [2018-11-06 21:34:13,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-11-06 21:34:13,278 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:34:13,279 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:34:13,279 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:34:13,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:34:13,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1862902283, now seen corresponding path program 1 times [2018-11-06 21:34:13,280 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:34:13,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:34:13,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:13,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:34:13,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:34:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:34:13,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:34:13,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:34:13,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:34:13,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:34:13,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:34:13,816 INFO L87 Difference]: Start difference. First operand 3739 states and 4777 transitions. Second operand 4 states. [2018-11-06 21:34:17,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:34:17,643 INFO L93 Difference]: Finished difference Result 9287 states and 12129 transitions. [2018-11-06 21:34:17,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:34:17,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 407 [2018-11-06 21:34:17,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:34:17,665 INFO L225 Difference]: With dead ends: 9287 [2018-11-06 21:34:17,665 INFO L226 Difference]: Without dead ends: 5550 [2018-11-06 21:34:17,671 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:34:17,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5550 states. [2018-11-06 21:34:17,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 5547. [2018-11-06 21:34:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5547 states. [2018-11-06 21:34:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 6932 transitions. [2018-11-06 21:34:17,760 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 6932 transitions. Word has length 407 [2018-11-06 21:34:17,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:34:17,761 INFO L480 AbstractCegarLoop]: Abstraction has 5547 states and 6932 transitions. [2018-11-06 21:34:17,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:34:17,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 6932 transitions. [2018-11-06 21:34:17,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-11-06 21:34:17,772 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:34:17,773 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:34:17,773 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:34:17,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:34:17,773 INFO L82 PathProgramCache]: Analyzing trace with hash -100023934, now seen corresponding path program 1 times [2018-11-06 21:34:17,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:34:17,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:34:17,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:17,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:34:17,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:34:18,376 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-06 21:34:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-06 21:34:18,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:34:18,650 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-06 21:34:18,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:34:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:34:18,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:34:19,185 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 17 [2018-11-06 21:34:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 157 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:34:19,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:34:19,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-11-06 21:34:19,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:34:19,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:34:19,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:34:19,606 INFO L87 Difference]: Start difference. First operand 5547 states and 6932 transitions. Second operand 7 states. [2018-11-06 21:34:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:34:35,813 INFO L93 Difference]: Finished difference Result 23253 states and 30187 transitions. [2018-11-06 21:34:35,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-06 21:34:35,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 432 [2018-11-06 21:34:35,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:34:35,870 INFO L225 Difference]: With dead ends: 23253 [2018-11-06 21:34:35,870 INFO L226 Difference]: Without dead ends: 17708 [2018-11-06 21:34:35,880 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-11-06 21:34:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17708 states. [2018-11-06 21:34:36,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17708 to 14925. [2018-11-06 21:34:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14925 states. [2018-11-06 21:34:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14925 states to 14925 states and 17815 transitions. [2018-11-06 21:34:36,190 INFO L78 Accepts]: Start accepts. Automaton has 14925 states and 17815 transitions. Word has length 432 [2018-11-06 21:34:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:34:36,191 INFO L480 AbstractCegarLoop]: Abstraction has 14925 states and 17815 transitions. [2018-11-06 21:34:36,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:34:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 14925 states and 17815 transitions. [2018-11-06 21:34:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-11-06 21:34:36,205 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:34:36,205 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:34:36,206 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:34:36,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:34:36,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1718705433, now seen corresponding path program 1 times [2018-11-06 21:34:36,206 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:34:36,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:34:36,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:36,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:34:36,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:34:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-06 21:34:36,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:34:36,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:34:36,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:34:36,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:34:36,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:34:36,624 INFO L87 Difference]: Start difference. First operand 14925 states and 17815 transitions. Second operand 4 states. [2018-11-06 21:34:40,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:34:40,294 INFO L93 Difference]: Finished difference Result 28927 states and 34608 transitions. [2018-11-06 21:34:40,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:34:40,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 435 [2018-11-06 21:34:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:34:40,327 INFO L225 Difference]: With dead ends: 28927 [2018-11-06 21:34:40,327 INFO L226 Difference]: Without dead ends: 14304 [2018-11-06 21:34:40,342 INFO L604 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 [2018-11-06 21:34:40,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14304 states. [2018-11-06 21:34:40,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14304 to 14300. [2018-11-06 21:34:40,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14300 states. [2018-11-06 21:34:40,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14300 states to 14300 states and 16336 transitions. [2018-11-06 21:34:40,554 INFO L78 Accepts]: Start accepts. Automaton has 14300 states and 16336 transitions. Word has length 435 [2018-11-06 21:34:40,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:34:40,555 INFO L480 AbstractCegarLoop]: Abstraction has 14300 states and 16336 transitions. [2018-11-06 21:34:40,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:34:40,556 INFO L276 IsEmpty]: Start isEmpty. Operand 14300 states and 16336 transitions. [2018-11-06 21:34:40,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2018-11-06 21:34:40,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:34:40,577 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:34:40,578 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:34:40,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:34:40,578 INFO L82 PathProgramCache]: Analyzing trace with hash -92711754, now seen corresponding path program 1 times [2018-11-06 21:34:40,578 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:34:40,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:34:40,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:40,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:34:40,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:34:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 361 proven. 51 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-06 21:34:41,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:34:41,614 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-06 21:34:41,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:34:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:34:41,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:34:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 361 proven. 51 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-06 21:34:42,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:34:42,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 9 [2018-11-06 21:34:42,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 21:34:42,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 21:34:42,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:34:42,285 INFO L87 Difference]: Start difference. First operand 14300 states and 16336 transitions. Second operand 9 states. [2018-11-06 21:34:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:34:55,529 INFO L93 Difference]: Finished difference Result 41943 states and 48730 transitions. [2018-11-06 21:34:55,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-06 21:34:55,530 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 585 [2018-11-06 21:34:55,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:34:55,587 INFO L225 Difference]: With dead ends: 41943 [2018-11-06 21:34:55,587 INFO L226 Difference]: Without dead ends: 27945 [2018-11-06 21:34:55,607 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 593 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2018-11-06 21:34:55,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27945 states. [2018-11-06 21:34:55,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27945 to 25170. [2018-11-06 21:34:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25170 states. [2018-11-06 21:34:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25170 states to 25170 states and 28670 transitions. [2018-11-06 21:34:55,987 INFO L78 Accepts]: Start accepts. Automaton has 25170 states and 28670 transitions. Word has length 585 [2018-11-06 21:34:55,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:34:55,988 INFO L480 AbstractCegarLoop]: Abstraction has 25170 states and 28670 transitions. [2018-11-06 21:34:55,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 21:34:55,988 INFO L276 IsEmpty]: Start isEmpty. Operand 25170 states and 28670 transitions. [2018-11-06 21:34:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2018-11-06 21:34:56,022 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:34:56,022 INFO L375 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, 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, 4, 4, 4, 4, 3, 3, 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] [2018-11-06 21:34:56,023 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:34:56,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:34:56,024 INFO L82 PathProgramCache]: Analyzing trace with hash 642633520, now seen corresponding path program 1 times [2018-11-06 21:34:56,024 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:34:56,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:34:56,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:56,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:34:56,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:34:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:34:56,788 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-11-06 21:34:57,122 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-11-06 21:34:57,613 WARN L179 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 14 [2018-11-06 21:34:58,021 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 19 [2018-11-06 21:34:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 737 proven. 4 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2018-11-06 21:34:58,861 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:34:58,861 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:34:58,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:34:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:34:59,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:35:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 702 proven. 39 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2018-11-06 21:35:00,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:35:00,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-11-06 21:35:00,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 21:35:00,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 21:35:00,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:35:00,063 INFO L87 Difference]: Start difference. First operand 25170 states and 28670 transitions. Second operand 9 states. [2018-11-06 21:35:10,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:35:10,140 INFO L93 Difference]: Finished difference Result 58832 states and 66484 transitions. [2018-11-06 21:35:10,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-06 21:35:10,140 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 628 [2018-11-06 21:35:10,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:35:10,169 INFO L225 Difference]: With dead ends: 58832 [2018-11-06 21:35:10,169 INFO L226 Difference]: Without dead ends: 16956 [2018-11-06 21:35:10,200 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 625 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-11-06 21:35:10,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16956 states. [2018-11-06 21:35:10,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16956 to 10652. [2018-11-06 21:35:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10652 states. [2018-11-06 21:35:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10652 states to 10652 states and 11397 transitions. [2018-11-06 21:35:10,362 INFO L78 Accepts]: Start accepts. Automaton has 10652 states and 11397 transitions. Word has length 628 [2018-11-06 21:35:10,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:35:10,363 INFO L480 AbstractCegarLoop]: Abstraction has 10652 states and 11397 transitions. [2018-11-06 21:35:10,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 21:35:10,363 INFO L276 IsEmpty]: Start isEmpty. Operand 10652 states and 11397 transitions. [2018-11-06 21:35:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2018-11-06 21:35:10,373 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:35:10,373 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:35:10,374 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:35:10,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:35:10,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1896400666, now seen corresponding path program 1 times [2018-11-06 21:35:10,374 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:35:10,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:35:10,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:35:10,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:35:10,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:35:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:35:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 472 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2018-11-06 21:35:11,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:35:11,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 21:35:11,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:35:11,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:35:11,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:35:11,067 INFO L87 Difference]: Start difference. First operand 10652 states and 11397 transitions. Second operand 5 states. [2018-11-06 21:35:13,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:35:13,463 INFO L93 Difference]: Finished difference Result 23066 states and 24616 transitions. [2018-11-06 21:35:13,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:35:13,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 647 [2018-11-06 21:35:13,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:35:13,479 INFO L225 Difference]: With dead ends: 23066 [2018-11-06 21:35:13,479 INFO L226 Difference]: Without dead ends: 12416 [2018-11-06 21:35:13,488 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:35:13,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12416 states. [2018-11-06 21:35:13,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12416 to 9106. [2018-11-06 21:35:13,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9106 states. [2018-11-06 21:35:13,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9106 states to 9106 states and 9471 transitions. [2018-11-06 21:35:13,607 INFO L78 Accepts]: Start accepts. Automaton has 9106 states and 9471 transitions. Word has length 647 [2018-11-06 21:35:13,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:35:13,608 INFO L480 AbstractCegarLoop]: Abstraction has 9106 states and 9471 transitions. [2018-11-06 21:35:13,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:35:13,608 INFO L276 IsEmpty]: Start isEmpty. Operand 9106 states and 9471 transitions. [2018-11-06 21:35:13,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2018-11-06 21:35:13,618 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:35:13,619 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:35:13,619 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:35:13,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:35:13,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1834118323, now seen corresponding path program 1 times [2018-11-06 21:35:13,620 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:35:13,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:35:13,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:35:13,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:35:13,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:35:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:35:14,181 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-06 21:35:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 434 proven. 51 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-11-06 21:35:14,605 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:35:14,605 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-06 21:35:14,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:35:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:35:14,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:35:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 459 proven. 179 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-11-06 21:35:17,673 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:35:17,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-06 21:35:17,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:35:17,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:35:17,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=38, Unknown=1, NotChecked=0, Total=56 [2018-11-06 21:35:17,675 INFO L87 Difference]: Start difference. First operand 9106 states and 9471 transitions. Second operand 8 states. Received shutdown request... [2018-11-06 21:37:56,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:37:56,905 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:37:56,910 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:37:56,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:37:56 BoogieIcfgContainer [2018-11-06 21:37:56,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:37:56,912 INFO L168 Benchmark]: Toolchain (without parser) took 256834.40 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 507.0 MB. Max. memory is 7.1 GB. [2018-11-06 21:37:56,913 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-06 21:37:56,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1355.80 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-06 21:37:56,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 384.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -873.9 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:37:56,915 INFO L168 Benchmark]: Boogie Preprocessor took 213.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2018-11-06 21:37:56,916 INFO L168 Benchmark]: RCFGBuilder took 6022.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 309.8 MB). Peak memory consumption was 309.8 MB. Max. memory is 7.1 GB. [2018-11-06 21:37:56,916 INFO L168 Benchmark]: TraceAbstraction took 248853.38 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 182.7 MB. Max. memory is 7.1 GB. [2018-11-06 21:37:56,922 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1355.80 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 384.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -873.9 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 213.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6022.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 309.8 MB). Peak memory consumption was 309.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 248853.38 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 182.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 163). Cancelled while BasicCegarLoop was constructing difference of abstraction (9106states) and FLOYD_HOARE automaton (currently 5 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (485 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 248.7s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 230.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2819 SDtfs, 17957 SDslu, 2458 SDs, 0 SdLazy, 37314 SolverSat, 7959 SolverUnsat, 77 SolverUnknown, 0 SolverNotchecked, 218.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2686 GetRequests, 2609 SyntacticMatches, 11 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25170occurred in iteration=8, 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: 1.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 17655 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 7226 NumberOfCodeBlocks, 7226 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 7210 ConstructedInterpolants, 205 QuantifiedInterpolants, 15617816 SizeOfPredicates, 8 NumberOfNonLiveVariables, 3112 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 6634/7168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown