java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label35_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 03:00:41,094 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 03:00:41,096 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 03:00:41,110 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 03:00:41,110 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 03:00:41,112 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 03:00:41,113 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 03:00:41,121 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 03:00:41,124 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 03:00:41,125 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 03:00:41,126 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 03:00:41,126 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 03:00:41,127 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 03:00:41,127 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 03:00:41,130 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 03:00:41,131 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 03:00:41,132 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 03:00:41,141 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 03:00:41,143 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 03:00:41,144 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 03:00:41,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 03:00:41,149 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 03:00:41,154 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-22 03:00:41,164 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 03:00:41,188 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 03:00:41,191 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 03:00:41,192 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 03:00:41,193 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 03:00:41,193 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 03:00:41,193 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 03:00:41,194 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 03:00:41,195 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 03:00:41,195 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 03:00:41,195 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 03:00:41,195 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 03:00:41,196 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 03:00:41,196 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 03:00:41,196 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 03:00:41,196 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 03:00:41,196 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 03:00:41,196 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 03:00:41,197 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 03:00:41,197 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 03:00:41,197 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 03:00:41,197 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 03:00:41,197 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 03:00:41,198 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 03:00:41,199 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 03:00:41,199 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 03:00:41,199 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 03:00:41,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 03:00:41,200 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 03:00:41,200 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 03:00:41,257 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 03:00:41,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 03:00:41,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 03:00:41,281 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 03:00:41,282 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 03:00:41,282 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label35_false-unreach-call.c [2018-07-22 03:00:41,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/30c303eae/89db06c8683441ef8567b0b7c2f32603/FLAG4d0e105b3 [2018-07-22 03:00:42,236 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 03:00:42,238 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label35_false-unreach-call.c [2018-07-22 03:00:42,309 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/30c303eae/89db06c8683441ef8567b0b7c2f32603/FLAG4d0e105b3 [2018-07-22 03:00:42,329 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/30c303eae/89db06c8683441ef8567b0b7c2f32603 [2018-07-22 03:00:42,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 03:00:42,348 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 03:00:42,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 03:00:42,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 03:00:42,358 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 03:00:42,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:00:42" (1/1) ... [2018-07-22 03:00:42,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f5700f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:00:42, skipping insertion in model container [2018-07-22 03:00:42,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:00:42" (1/1) ... [2018-07-22 03:00:42,772 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 03:00:44,091 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 03:00:44,109 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 03:00:45,200 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 03:00:45,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:00:45 WrapperNode [2018-07-22 03:00:45,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 03:00:45,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 03:00:45,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 03:00:45,600 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 03:00:45,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:00:45" (1/1) ... [2018-07-22 03:00:45,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:00:45" (1/1) ... [2018-07-22 03:00:46,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 03:00:46,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 03:00:46,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 03:00:46,285 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 03:00:46,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:00:45" (1/1) ... [2018-07-22 03:00:46,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:00:45" (1/1) ... [2018-07-22 03:00:46,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:00:45" (1/1) ... [2018-07-22 03:00:46,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:00:45" (1/1) ... [2018-07-22 03:00:46,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:00:45" (1/1) ... [2018-07-22 03:00:48,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:00:45" (1/1) ... [2018-07-22 03:00:48,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:00:45" (1/1) ... [2018-07-22 03:00:48,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 03:00:48,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 03:00:48,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 03:00:48,131 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 03:00:48,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:00:45" (1/1) ... No working directory specified, using /storage/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 [2018-07-22 03:00:48,207 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 03:00:48,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 03:00:48,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 03:00:59,743 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 03:00:59,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:00:59 BoogieIcfgContainer [2018-07-22 03:00:59,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 03:00:59,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 03:00:59,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 03:00:59,748 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 03:00:59,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:00:42" (1/3) ... [2018-07-22 03:00:59,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770d9ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:00:59, skipping insertion in model container [2018-07-22 03:00:59,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:00:45" (2/3) ... [2018-07-22 03:00:59,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770d9ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:00:59, skipping insertion in model container [2018-07-22 03:00:59,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:00:59" (3/3) ... [2018-07-22 03:00:59,752 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label35_false-unreach-call.c [2018-07-22 03:00:59,762 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 03:00:59,777 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 03:00:59,859 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 03:00:59,860 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 03:00:59,860 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 03:00:59,860 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 03:00:59,861 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 03:00:59,861 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 03:00:59,861 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 03:00:59,861 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 03:00:59,861 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 03:00:59,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-07-22 03:00:59,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-07-22 03:00:59,907 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:00:59,908 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:00:59,908 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:00:59,914 INFO L82 PathProgramCache]: Analyzing trace with hash -159296518, now seen corresponding path program 1 times [2018-07-22 03:00:59,916 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:00:59,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:00:59,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:00:59,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:00:59,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:01:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:01:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 03:01:00,254 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:01:00,254 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 03:01:00,259 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:01:00,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:01:00,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:01:00,281 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-07-22 03:01:11,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:01:11,640 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-07-22 03:01:11,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:01:11,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-07-22 03:01:11,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:01:11,682 INFO L225 Difference]: With dead ends: 3896 [2018-07-22 03:01:11,682 INFO L226 Difference]: Without dead ends: 2790 [2018-07-22 03:01:11,691 INFO L578 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 [2018-07-22 03:01:11,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-07-22 03:01:11,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-07-22 03:01:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-07-22 03:01:11,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-07-22 03:01:11,897 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 11 [2018-07-22 03:01:11,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:01:11,898 INFO L471 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-07-22 03:01:11,898 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:01:11,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-07-22 03:01:11,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-07-22 03:01:11,902 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:01:11,902 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:01:11,903 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:01:11,903 INFO L82 PathProgramCache]: Analyzing trace with hash -407574543, now seen corresponding path program 1 times [2018-07-22 03:01:11,903 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:01:11,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:01:11,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:01:11,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:01:11,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:01:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:01:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 03:01:12,699 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:01:12,699 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:01:12,701 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 03:01:12,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 03:01:12,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-22 03:01:12,702 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-07-22 03:01:12,973 WARN L169 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-22 03:01:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:01:24,347 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-07-22 03:01:24,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 03:01:24,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2018-07-22 03:01:24,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:01:24,374 INFO L225 Difference]: With dead ends: 7061 [2018-07-22 03:01:24,374 INFO L226 Difference]: Without dead ends: 5118 [2018-07-22 03:01:24,378 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-22 03:01:24,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-07-22 03:01:24,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-07-22 03:01:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-07-22 03:01:24,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-07-22 03:01:24,528 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 77 [2018-07-22 03:01:24,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:01:24,528 INFO L471 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-07-22 03:01:24,529 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 03:01:24,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-07-22 03:01:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-22 03:01:24,539 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:01:24,540 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-22 03:01:24,540 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:01:24,540 INFO L82 PathProgramCache]: Analyzing trace with hash 391703246, now seen corresponding path program 1 times [2018-07-22 03:01:24,540 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:01:24,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:01:24,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:01:24,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:01:24,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:01:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:01:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 03:01:24,750 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:01:24,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 03:01:24,751 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 03:01:24,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 03:01:24,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:01:24,752 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 3 states. [2018-07-22 03:01:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:01:28,476 INFO L93 Difference]: Finished difference Result 10220 states and 15517 transitions. [2018-07-22 03:01:28,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 03:01:28,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2018-07-22 03:01:28,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:01:28,504 INFO L225 Difference]: With dead ends: 10220 [2018-07-22 03:01:28,504 INFO L226 Difference]: Without dead ends: 5893 [2018-07-22 03:01:28,511 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:01:28,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2018-07-22 03:01:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 5892. [2018-07-22 03:01:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5892 states. [2018-07-22 03:01:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5892 states to 5892 states and 7437 transitions. [2018-07-22 03:01:28,667 INFO L78 Accepts]: Start accepts. Automaton has 5892 states and 7437 transitions. Word has length 137 [2018-07-22 03:01:28,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:01:28,668 INFO L471 AbstractCegarLoop]: Abstraction has 5892 states and 7437 transitions. [2018-07-22 03:01:28,668 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 03:01:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5892 states and 7437 transitions. [2018-07-22 03:01:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-22 03:01:28,678 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:01:28,678 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:01:28,678 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:01:28,678 INFO L82 PathProgramCache]: Analyzing trace with hash 443824725, now seen corresponding path program 1 times [2018-07-22 03:01:28,679 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:01:28,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:01:28,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:01:28,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:01:28,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:01:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:01:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-22 03:01:29,111 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 03:01:29,111 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 03:01:29,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:01:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:01:29,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 03:01:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 03:01:29,432 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 03:01:29,432 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-07-22 03:01:29,433 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 03:01:29,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 03:01:29,434 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 03:01:29,434 INFO L87 Difference]: Start difference. First operand 5892 states and 7437 transitions. Second operand 5 states. [2018-07-22 03:01:39,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:01:39,695 INFO L93 Difference]: Finished difference Result 20501 states and 27031 transitions. [2018-07-22 03:01:39,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 03:01:39,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2018-07-22 03:01:39,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:01:39,755 INFO L225 Difference]: With dead ends: 20501 [2018-07-22 03:01:39,756 INFO L226 Difference]: Without dead ends: 15399 [2018-07-22 03:01:39,766 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 03:01:39,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15399 states. [2018-07-22 03:01:40,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15399 to 10627. [2018-07-22 03:01:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10627 states. [2018-07-22 03:01:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10627 states to 10627 states and 13141 transitions. [2018-07-22 03:01:40,117 INFO L78 Accepts]: Start accepts. Automaton has 10627 states and 13141 transitions. Word has length 176 [2018-07-22 03:01:40,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:01:40,119 INFO L471 AbstractCegarLoop]: Abstraction has 10627 states and 13141 transitions. [2018-07-22 03:01:40,119 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 03:01:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 10627 states and 13141 transitions. [2018-07-22 03:01:40,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-22 03:01:40,126 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:01:40,126 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:01:40,126 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:01:40,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1381219142, now seen corresponding path program 1 times [2018-07-22 03:01:40,127 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:01:40,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:01:40,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:01:40,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:01:40,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:01:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:01:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-22 03:01:40,379 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:01:40,379 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 03:01:40,380 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 03:01:40,380 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 03:01:40,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:01:40,381 INFO L87 Difference]: Start difference. First operand 10627 states and 13141 transitions. Second operand 3 states. [2018-07-22 03:01:46,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:01:46,756 INFO L93 Difference]: Finished difference Result 28343 states and 35767 transitions. [2018-07-22 03:01:46,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 03:01:46,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2018-07-22 03:01:46,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:01:46,808 INFO L225 Difference]: With dead ends: 28343 [2018-07-22 03:01:46,808 INFO L226 Difference]: Without dead ends: 18506 [2018-07-22 03:01:46,822 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 03:01:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18506 states. [2018-07-22 03:01:47,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18506 to 18505. [2018-07-22 03:01:47,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18505 states. [2018-07-22 03:01:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18505 states to 18505 states and 22008 transitions. [2018-07-22 03:01:47,386 INFO L78 Accepts]: Start accepts. Automaton has 18505 states and 22008 transitions. Word has length 187 [2018-07-22 03:01:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:01:47,387 INFO L471 AbstractCegarLoop]: Abstraction has 18505 states and 22008 transitions. [2018-07-22 03:01:47,387 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 03:01:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 18505 states and 22008 transitions. [2018-07-22 03:01:47,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-22 03:01:47,392 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:01:47,392 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:01:47,392 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:01:47,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1345595991, now seen corresponding path program 1 times [2018-07-22 03:01:47,393 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:01:47,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:01:47,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:01:47,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:01:47,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:01:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:01:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-07-22 03:01:47,687 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:01:47,687 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:01:47,688 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:01:47,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:01:47,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:01:47,688 INFO L87 Difference]: Start difference. First operand 18505 states and 22008 transitions. Second operand 4 states. [2018-07-22 03:01:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:01:57,012 INFO L93 Difference]: Finished difference Result 67766 states and 81590 transitions. [2018-07-22 03:01:57,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:01:57,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2018-07-22 03:01:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:01:57,102 INFO L225 Difference]: With dead ends: 67766 [2018-07-22 03:01:57,102 INFO L226 Difference]: Without dead ends: 48459 [2018-07-22 03:01:57,128 INFO L578 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 [2018-07-22 03:01:57,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48459 states. [2018-07-22 03:01:57,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48459 to 47650. [2018-07-22 03:01:57,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47650 states. [2018-07-22 03:01:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47650 states to 47650 states and 53298 transitions. [2018-07-22 03:01:57,987 INFO L78 Accepts]: Start accepts. Automaton has 47650 states and 53298 transitions. Word has length 225 [2018-07-22 03:01:57,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:01:57,988 INFO L471 AbstractCegarLoop]: Abstraction has 47650 states and 53298 transitions. [2018-07-22 03:01:57,988 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:01:57,988 INFO L276 IsEmpty]: Start isEmpty. Operand 47650 states and 53298 transitions. [2018-07-22 03:01:57,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-22 03:01:57,996 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:01:57,996 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:01:57,996 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:01:57,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1647380504, now seen corresponding path program 1 times [2018-07-22 03:01:57,997 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:01:57,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:01:57,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:01:57,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:01:57,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:01:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:01:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-07-22 03:01:58,409 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:01:58,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:01:58,411 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:01:58,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:01:58,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:01:58,412 INFO L87 Difference]: Start difference. First operand 47650 states and 53298 transitions. Second operand 4 states. [2018-07-22 03:02:03,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:02:03,935 INFO L93 Difference]: Finished difference Result 100807 states and 113552 transitions. [2018-07-22 03:02:03,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:02:03,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2018-07-22 03:02:03,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:02:04,014 INFO L225 Difference]: With dead ends: 100807 [2018-07-22 03:02:04,015 INFO L226 Difference]: Without dead ends: 53947 [2018-07-22 03:02:04,054 INFO L578 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 [2018-07-22 03:02:04,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53947 states. [2018-07-22 03:02:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53947 to 53158. [2018-07-22 03:02:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53158 states. [2018-07-22 03:02:04,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53158 states to 53158 states and 57961 transitions. [2018-07-22 03:02:04,917 INFO L78 Accepts]: Start accepts. Automaton has 53158 states and 57961 transitions. Word has length 328 [2018-07-22 03:02:04,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:02:04,918 INFO L471 AbstractCegarLoop]: Abstraction has 53158 states and 57961 transitions. [2018-07-22 03:02:04,918 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:02:04,918 INFO L276 IsEmpty]: Start isEmpty. Operand 53158 states and 57961 transitions. [2018-07-22 03:02:04,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-07-22 03:02:04,928 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:02:04,928 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:02:04,928 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:02:04,928 INFO L82 PathProgramCache]: Analyzing trace with hash 927079673, now seen corresponding path program 1 times [2018-07-22 03:02:04,928 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:02:04,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:02:04,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:04,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:02:04,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:02:05,305 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-22 03:02:05,306 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:02:05,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:02:05,306 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 03:02:05,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 03:02:05,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 03:02:05,307 INFO L87 Difference]: Start difference. First operand 53158 states and 57961 transitions. Second operand 5 states. [2018-07-22 03:02:19,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:02:19,857 INFO L93 Difference]: Finished difference Result 199537 states and 217232 transitions. [2018-07-22 03:02:19,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 03:02:19,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 368 [2018-07-22 03:02:19,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:02:20,022 INFO L225 Difference]: With dead ends: 199537 [2018-07-22 03:02:20,022 INFO L226 Difference]: Without dead ends: 147169 [2018-07-22 03:02:20,062 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 03:02:20,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147169 states. [2018-07-22 03:02:21,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147169 to 135984. [2018-07-22 03:02:21,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135984 states. [2018-07-22 03:02:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135984 states to 135984 states and 146363 transitions. [2018-07-22 03:02:21,512 INFO L78 Accepts]: Start accepts. Automaton has 135984 states and 146363 transitions. Word has length 368 [2018-07-22 03:02:21,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:02:21,512 INFO L471 AbstractCegarLoop]: Abstraction has 135984 states and 146363 transitions. [2018-07-22 03:02:21,512 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 03:02:21,512 INFO L276 IsEmpty]: Start isEmpty. Operand 135984 states and 146363 transitions. [2018-07-22 03:02:21,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-07-22 03:02:21,529 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:02:21,529 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-22 03:02:21,529 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:02:21,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1711417226, now seen corresponding path program 1 times [2018-07-22 03:02:21,530 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:02:21,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:02:21,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:21,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:02:21,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:02:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-07-22 03:02:21,948 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:02:21,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:02:21,949 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:02:21,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:02:21,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:02:21,949 INFO L87 Difference]: Start difference. First operand 135984 states and 146363 transitions. Second operand 4 states. [2018-07-22 03:02:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:02:33,835 INFO L93 Difference]: Finished difference Result 305845 states and 330098 transitions. [2018-07-22 03:02:33,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:02:33,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 396 [2018-07-22 03:02:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:02:34,009 INFO L225 Difference]: With dead ends: 305845 [2018-07-22 03:02:34,009 INFO L226 Difference]: Without dead ends: 165903 [2018-07-22 03:02:34,065 INFO L578 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 [2018-07-22 03:02:34,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165903 states. [2018-07-22 03:02:35,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165903 to 164309. [2018-07-22 03:02:35,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164309 states. [2018-07-22 03:02:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164309 states to 164309 states and 174134 transitions. [2018-07-22 03:02:35,795 INFO L78 Accepts]: Start accepts. Automaton has 164309 states and 174134 transitions. Word has length 396 [2018-07-22 03:02:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:02:35,795 INFO L471 AbstractCegarLoop]: Abstraction has 164309 states and 174134 transitions. [2018-07-22 03:02:35,796 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:02:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 164309 states and 174134 transitions. [2018-07-22 03:02:35,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2018-07-22 03:02:35,838 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:02:35,862 INFO L358 BasicCegarLoop]: trace histogram [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, 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] [2018-07-22 03:02:35,862 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:02:35,862 INFO L82 PathProgramCache]: Analyzing trace with hash 280658109, now seen corresponding path program 1 times [2018-07-22 03:02:35,863 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:02:35,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:02:35,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:35,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:02:35,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:02:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-07-22 03:02:36,327 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:02:36,327 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 03:02:36,328 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:02:36,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:02:36,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:02:36,328 INFO L87 Difference]: Start difference. First operand 164309 states and 174134 transitions. Second operand 4 states. [2018-07-22 03:02:43,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:02:43,906 INFO L93 Difference]: Finished difference Result 336497 states and 356530 transitions. [2018-07-22 03:02:43,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:02:43,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 597 [2018-07-22 03:02:43,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:02:44,047 INFO L225 Difference]: With dead ends: 336497 [2018-07-22 03:02:44,047 INFO L226 Difference]: Without dead ends: 160328 [2018-07-22 03:02:44,116 INFO L578 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 [2018-07-22 03:02:44,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160328 states. [2018-07-22 03:02:46,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160328 to 154023. [2018-07-22 03:02:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154023 states. [2018-07-22 03:02:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154023 states to 154023 states and 162353 transitions. [2018-07-22 03:02:46,195 INFO L78 Accepts]: Start accepts. Automaton has 154023 states and 162353 transitions. Word has length 597 [2018-07-22 03:02:46,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:02:46,214 INFO L471 AbstractCegarLoop]: Abstraction has 154023 states and 162353 transitions. [2018-07-22 03:02:46,214 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:02:46,214 INFO L276 IsEmpty]: Start isEmpty. Operand 154023 states and 162353 transitions. [2018-07-22 03:02:46,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2018-07-22 03:02:46,232 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:02:46,233 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:02:46,233 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:02:46,233 INFO L82 PathProgramCache]: Analyzing trace with hash 2028707824, now seen corresponding path program 1 times [2018-07-22 03:02:46,234 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:02:46,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:02:46,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:46,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:02:46,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:02:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:02:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2018-07-22 03:02:47,819 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:02:47,819 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:02:47,820 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:02:47,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:02:47,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:02:47,821 INFO L87 Difference]: Start difference. First operand 154023 states and 162353 transitions. Second operand 4 states. [2018-07-22 03:02:59,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:02:59,235 INFO L93 Difference]: Finished difference Result 339646 states and 358448 transitions. [2018-07-22 03:02:59,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:02:59,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 657 [2018-07-22 03:02:59,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:02:59,407 INFO L225 Difference]: With dead ends: 339646 [2018-07-22 03:02:59,407 INFO L226 Difference]: Without dead ends: 186413 [2018-07-22 03:02:59,449 INFO L578 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 [2018-07-22 03:02:59,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186413 states. [2018-07-22 03:03:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186413 to 181607. [2018-07-22 03:03:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181607 states. [2018-07-22 03:03:01,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181607 states to 181607 states and 191361 transitions. [2018-07-22 03:03:01,206 INFO L78 Accepts]: Start accepts. Automaton has 181607 states and 191361 transitions. Word has length 657 [2018-07-22 03:03:01,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:03:01,207 INFO L471 AbstractCegarLoop]: Abstraction has 181607 states and 191361 transitions. [2018-07-22 03:03:01,207 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:03:01,207 INFO L276 IsEmpty]: Start isEmpty. Operand 181607 states and 191361 transitions. [2018-07-22 03:03:01,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2018-07-22 03:03:01,231 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:03:01,232 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:03:01,232 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:03:01,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1629185873, now seen corresponding path program 1 times [2018-07-22 03:03:01,232 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:03:01,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:03:01,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:01,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:03:01,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:03:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-07-22 03:03:02,635 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 03:03:02,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 03:03:02,636 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 03:03:02,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 03:03:02,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 03:03:02,636 INFO L87 Difference]: Start difference. First operand 181607 states and 191361 transitions. Second operand 4 states. [2018-07-22 03:03:11,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:03:11,385 INFO L93 Difference]: Finished difference Result 391601 states and 413855 transitions. [2018-07-22 03:03:11,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 03:03:11,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 687 [2018-07-22 03:03:11,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:03:11,592 INFO L225 Difference]: With dead ends: 391601 [2018-07-22 03:03:11,592 INFO L226 Difference]: Without dead ends: 210784 [2018-07-22 03:03:12,565 INFO L578 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 [2018-07-22 03:03:12,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210784 states. [2018-07-22 03:03:18,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210784 to 197353. [2018-07-22 03:03:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197353 states. [2018-07-22 03:03:18,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197353 states to 197353 states and 204571 transitions. [2018-07-22 03:03:18,488 INFO L78 Accepts]: Start accepts. Automaton has 197353 states and 204571 transitions. Word has length 687 [2018-07-22 03:03:18,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:03:18,489 INFO L471 AbstractCegarLoop]: Abstraction has 197353 states and 204571 transitions. [2018-07-22 03:03:18,489 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 03:03:18,489 INFO L276 IsEmpty]: Start isEmpty. Operand 197353 states and 204571 transitions. [2018-07-22 03:03:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2018-07-22 03:03:18,509 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:03:18,510 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 03:03:18,510 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:03:18,510 INFO L82 PathProgramCache]: Analyzing trace with hash -444298174, now seen corresponding path program 1 times [2018-07-22 03:03:18,510 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:03:18,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:03:18,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:18,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:03:18,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:03:19,919 WARN L169 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-07-22 03:03:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 480 proven. 287 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2018-07-22 03:03:20,716 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 03:03:20,716 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 03:03:20,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:03:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:03:20,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 03:03:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 664 proven. 0 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2018-07-22 03:03:21,712 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 03:03:21,713 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-22 03:03:21,714 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-22 03:03:21,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-22 03:03:21,714 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-22 03:03:21,714 INFO L87 Difference]: Start difference. First operand 197353 states and 204571 transitions. Second operand 7 states. [2018-07-22 03:03:51,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 03:03:51,367 INFO L93 Difference]: Finished difference Result 494142 states and 511347 transitions. [2018-07-22 03:03:51,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-22 03:03:51,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 790 [2018-07-22 03:03:51,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 03:03:51,627 INFO L225 Difference]: With dead ends: 494142 [2018-07-22 03:03:51,627 INFO L226 Difference]: Without dead ends: 295999 [2018-07-22 03:03:51,666 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 788 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2018-07-22 03:03:51,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295999 states. [2018-07-22 03:03:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295999 to 272247. [2018-07-22 03:03:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272247 states. [2018-07-22 03:03:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272247 states to 272247 states and 281260 transitions. [2018-07-22 03:03:55,144 INFO L78 Accepts]: Start accepts. Automaton has 272247 states and 281260 transitions. Word has length 790 [2018-07-22 03:03:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 03:03:55,144 INFO L471 AbstractCegarLoop]: Abstraction has 272247 states and 281260 transitions. [2018-07-22 03:03:55,144 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-22 03:03:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 272247 states and 281260 transitions. [2018-07-22 03:03:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2018-07-22 03:03:55,160 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 03:03:55,161 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 03:03:55,161 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 03:03:55,162 INFO L82 PathProgramCache]: Analyzing trace with hash 2025962510, now seen corresponding path program 1 times [2018-07-22 03:03:55,162 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 03:03:55,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 03:03:55,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:55,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:03:55,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 03:03:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:03:56,406 WARN L169 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-07-22 03:03:56,773 WARN L169 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 8 [2018-07-22 03:04:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 594 proven. 225 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-07-22 03:04:02,106 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 03:04:02,106 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 03:04:02,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 03:04:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 03:04:02,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 03:04:03,077 WARN L169 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 24 [2018-07-22 03:04:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 695 proven. 225 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-07-22 03:04:04,398 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 03:04:04,398 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-07-22 03:04:04,400 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-22 03:04:04,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-22 03:04:04,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-07-22 03:04:04,400 INFO L87 Difference]: Start difference. First operand 272247 states and 281260 transitions. Second operand 9 states. Received shutdown request... [2018-07-22 03:04:21,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-07-22 03:04:21,600 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 03:04:21,607 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 03:04:21,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:04:21 BoogieIcfgContainer [2018-07-22 03:04:21,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 03:04:21,613 INFO L168 Benchmark]: Toolchain (without parser) took 219271.25 ms. Allocated memory was 302.0 MB in the beginning and 2.8 GB in the end (delta: 2.5 GB). Free memory was 230.9 MB in the beginning and 1.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-07-22 03:04:21,614 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 03:04:21,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3249.48 ms. Allocated memory was 302.0 MB in the beginning and 380.6 MB in the end (delta: 78.6 MB). Free memory was 230.9 MB in the beginning and 186.6 MB in the end (delta: 44.3 MB). Peak memory consumption was 123.0 MB. Max. memory is 5.3 GB. [2018-07-22 03:04:21,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 685.27 ms. Allocated memory was 380.6 MB in the beginning and 385.9 MB in the end (delta: 5.2 MB). Free memory was 186.6 MB in the beginning and 184.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 102.0 MB. Max. memory is 5.3 GB. [2018-07-22 03:04:21,616 INFO L168 Benchmark]: Boogie Preprocessor took 1845.44 ms. Allocated memory was 385.9 MB in the beginning and 712.5 MB in the end (delta: 326.6 MB). Free memory was 184.5 MB in the beginning and 528.2 MB in the end (delta: -343.6 MB). Peak memory consumption was 123.2 MB. Max. memory is 5.3 GB. [2018-07-22 03:04:21,616 INFO L168 Benchmark]: RCFGBuilder took 11612.73 ms. Allocated memory was 712.5 MB in the beginning and 954.2 MB in the end (delta: 241.7 MB). Free memory was 528.2 MB in the beginning and 547.4 MB in the end (delta: -19.2 MB). Peak memory consumption was 302.4 MB. Max. memory is 5.3 GB. [2018-07-22 03:04:21,622 INFO L168 Benchmark]: TraceAbstraction took 201862.47 ms. Allocated memory was 954.2 MB in the beginning and 2.8 GB in the end (delta: 1.8 GB). Free memory was 547.4 MB in the beginning and 1.6 GB in the end (delta: -1.0 GB). Peak memory consumption was 763.9 MB. Max. memory is 5.3 GB. [2018-07-22 03:04:21,626 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 3249.48 ms. Allocated memory was 302.0 MB in the beginning and 380.6 MB in the end (delta: 78.6 MB). Free memory was 230.9 MB in the beginning and 186.6 MB in the end (delta: 44.3 MB). Peak memory consumption was 123.0 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 685.27 ms. Allocated memory was 380.6 MB in the beginning and 385.9 MB in the end (delta: 5.2 MB). Free memory was 186.6 MB in the beginning and 184.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 102.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1845.44 ms. Allocated memory was 385.9 MB in the beginning and 712.5 MB in the end (delta: 326.6 MB). Free memory was 184.5 MB in the beginning and 528.2 MB in the end (delta: -343.6 MB). Peak memory consumption was 123.2 MB. Max. memory is 5.3 GB. * RCFGBuilder took 11612.73 ms. Allocated memory was 712.5 MB in the beginning and 954.2 MB in the end (delta: 241.7 MB). Free memory was 528.2 MB in the beginning and 547.4 MB in the end (delta: -19.2 MB). Peak memory consumption was 302.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 201862.47 ms. Allocated memory was 954.2 MB in the beginning and 2.8 GB in the end (delta: 1.8 GB). Free memory was 547.4 MB in the beginning and 1.6 GB in the end (delta: -1.0 GB). Peak memory consumption was 763.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 42). Cancelled while BasicCegarLoop was constructing difference of abstraction (272247states) and interpolant automaton (currently 25 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (64704 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 201.7s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 162.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10750 SDtfs, 48462 SDslu, 3787 SDs, 0 SdLazy, 91294 SolverSat, 17773 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 129.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2005 GetRequests, 1938 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272247occurred in iteration=13, 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: 19.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 68291 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 7524 NumberOfCodeBlocks, 7524 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7507 ConstructedInterpolants, 214 QuantifiedInterpolants, 16732771 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2374 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 7028/7831 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem13_label35_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_03-04-21-643.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem13_label35_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_03-04-21-643.csv Completed graceful shutdown