/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:12:11,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:12:11,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:12:11,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:12:11,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:12:11,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:12:11,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:12:11,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:12:11,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:12:11,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:12:11,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:12:11,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:12:11,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:12:11,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:12:11,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:12:11,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:12:11,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:12:11,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:12:11,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:12:11,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:12:11,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:12:11,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:12:11,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:12:11,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:12:11,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:12:11,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:12:11,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:12:11,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:12:11,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:12:11,424 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:12:11,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:12:11,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:12:11,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:12:11,427 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:12:11,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:12:11,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:12:11,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:12:11,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:12:11,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:12:11,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:12:11,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:12:11,428 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:12:11,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:12:11,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:12:11,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:12:11,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:12:11,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:12:11,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:12:11,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:12:11,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:12:11,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:12:11,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:12:11,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:12:11,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:12:11,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:12:11,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:12:11,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:12:11,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:12:11,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:12:11,905 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:12:11,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 08:12:11,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99557a2af/da4bf1388e88455d902be43e3387247a/FLAGe42b77b02 [2020-12-22 08:12:12,888 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:12:12,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 08:12:12,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99557a2af/da4bf1388e88455d902be43e3387247a/FLAGe42b77b02 [2020-12-22 08:12:13,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99557a2af/da4bf1388e88455d902be43e3387247a [2020-12-22 08:12:13,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:12:13,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:12:13,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:12:13,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:12:13,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:12:13,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:12:13" (1/1) ... [2020-12-22 08:12:13,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ebb40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:13, skipping insertion in model container [2020-12-22 08:12:13,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:12:13" (1/1) ... [2020-12-22 08:12:13,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:12:13,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:12:13,628 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21120,21133] [2020-12-22 08:12:13,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:12:13,913 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:12:14,065 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21120,21133] [2020-12-22 08:12:14,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:12:14,209 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:12:14,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:14 WrapperNode [2020-12-22 08:12:14,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:12:14,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:12:14,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:12:14,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:12:14,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:14" (1/1) ... [2020-12-22 08:12:14,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:14" (1/1) ... [2020-12-22 08:12:14,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:12:14,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:12:14,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:12:14,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:12:14,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:14" (1/1) ... [2020-12-22 08:12:14,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:14" (1/1) ... [2020-12-22 08:12:14,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:14" (1/1) ... [2020-12-22 08:12:14,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:14" (1/1) ... [2020-12-22 08:12:14,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:14" (1/1) ... [2020-12-22 08:12:14,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:14" (1/1) ... [2020-12-22 08:12:14,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:14" (1/1) ... [2020-12-22 08:12:14,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:12:14,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:12:14,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:12:14,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:12:14,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:14" (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 [2020-12-22 08:12:14,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:12:14,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:12:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:12:14,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:12:17,839 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:12:17,840 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:12:17,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:12:17 BoogieIcfgContainer [2020-12-22 08:12:17,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:12:17,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:12:17,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:12:17,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:12:17,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:12:13" (1/3) ... [2020-12-22 08:12:17,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a81aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:12:17, skipping insertion in model container [2020-12-22 08:12:17,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:12:14" (2/3) ... [2020-12-22 08:12:17,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a81aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:12:17, skipping insertion in model container [2020-12-22 08:12:17,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:12:17" (3/3) ... [2020-12-22 08:12:17,853 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 08:12:17,860 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:12:17,867 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:12:17,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:12:17,924 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:12:17,925 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:12:17,925 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:12:17,925 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:12:17,925 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:12:17,925 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:12:17,925 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:12:17,925 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:12:17,958 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states. [2020-12-22 08:12:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-12-22 08:12:18,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:18,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:18,007 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:18,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:18,015 INFO L82 PathProgramCache]: Analyzing trace with hash 898129935, now seen corresponding path program 1 times [2020-12-22 08:12:18,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:18,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7868978] [2020-12-22 08:12:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:18,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7868978] [2020-12-22 08:12:18,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:18,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:18,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361260147] [2020-12-22 08:12:18,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:18,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:18,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:18,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:18,903 INFO L87 Difference]: Start difference. First operand 716 states. Second operand 3 states. [2020-12-22 08:12:19,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:19,144 INFO L93 Difference]: Finished difference Result 1089 states and 1943 transitions. [2020-12-22 08:12:19,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:19,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-12-22 08:12:19,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:19,175 INFO L225 Difference]: With dead ends: 1089 [2020-12-22 08:12:19,176 INFO L226 Difference]: Without dead ends: 890 [2020-12-22 08:12:19,186 INFO L677 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 [2020-12-22 08:12:19,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-12-22 08:12:19,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 888. [2020-12-22 08:12:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-12-22 08:12:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1560 transitions. [2020-12-22 08:12:19,336 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1560 transitions. Word has length 184 [2020-12-22 08:12:19,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:19,337 INFO L481 AbstractCegarLoop]: Abstraction has 888 states and 1560 transitions. [2020-12-22 08:12:19,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:19,338 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1560 transitions. [2020-12-22 08:12:19,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-12-22 08:12:19,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:19,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:19,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:12:19,344 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:19,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:19,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1119640315, now seen corresponding path program 1 times [2020-12-22 08:12:19,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:19,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664056251] [2020-12-22 08:12:19,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:19,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:19,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664056251] [2020-12-22 08:12:19,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:19,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:19,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611868401] [2020-12-22 08:12:19,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:19,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:19,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:19,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:19,709 INFO L87 Difference]: Start difference. First operand 888 states and 1560 transitions. Second operand 3 states. [2020-12-22 08:12:19,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:19,778 INFO L93 Difference]: Finished difference Result 1237 states and 2155 transitions. [2020-12-22 08:12:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:19,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2020-12-22 08:12:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:19,787 INFO L225 Difference]: With dead ends: 1237 [2020-12-22 08:12:19,787 INFO L226 Difference]: Without dead ends: 1047 [2020-12-22 08:12:19,790 INFO L677 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 [2020-12-22 08:12:19,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2020-12-22 08:12:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1045. [2020-12-22 08:12:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1045 states. [2020-12-22 08:12:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1828 transitions. [2020-12-22 08:12:19,832 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1828 transitions. Word has length 188 [2020-12-22 08:12:19,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:19,833 INFO L481 AbstractCegarLoop]: Abstraction has 1045 states and 1828 transitions. [2020-12-22 08:12:19,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1828 transitions. [2020-12-22 08:12:19,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-12-22 08:12:19,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:19,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:19,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:12:19,837 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:19,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:19,838 INFO L82 PathProgramCache]: Analyzing trace with hash -2018051092, now seen corresponding path program 1 times [2020-12-22 08:12:19,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:19,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769369653] [2020-12-22 08:12:19,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:20,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769369653] [2020-12-22 08:12:20,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:20,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:20,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051669696] [2020-12-22 08:12:20,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:20,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:20,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:20,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:20,092 INFO L87 Difference]: Start difference. First operand 1045 states and 1828 transitions. Second operand 3 states. [2020-12-22 08:12:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:20,213 INFO L93 Difference]: Finished difference Result 2052 states and 3531 transitions. [2020-12-22 08:12:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:20,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2020-12-22 08:12:20,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:20,227 INFO L225 Difference]: With dead ends: 2052 [2020-12-22 08:12:20,227 INFO L226 Difference]: Without dead ends: 1532 [2020-12-22 08:12:20,230 INFO L677 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 [2020-12-22 08:12:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2020-12-22 08:12:20,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1530. [2020-12-22 08:12:20,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1530 states. [2020-12-22 08:12:20,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2644 transitions. [2020-12-22 08:12:20,324 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2644 transitions. Word has length 188 [2020-12-22 08:12:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:20,325 INFO L481 AbstractCegarLoop]: Abstraction has 1530 states and 2644 transitions. [2020-12-22 08:12:20,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:20,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2644 transitions. [2020-12-22 08:12:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-12-22 08:12:20,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:20,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:20,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:12:20,331 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:20,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:20,332 INFO L82 PathProgramCache]: Analyzing trace with hash -689859409, now seen corresponding path program 1 times [2020-12-22 08:12:20,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:20,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260842812] [2020-12-22 08:12:20,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:20,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260842812] [2020-12-22 08:12:20,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:20,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:20,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780509136] [2020-12-22 08:12:20,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:20,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:20,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:20,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:20,629 INFO L87 Difference]: Start difference. First operand 1530 states and 2644 transitions. Second operand 3 states. [2020-12-22 08:12:20,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:20,766 INFO L93 Difference]: Finished difference Result 3474 states and 5916 transitions. [2020-12-22 08:12:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:20,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2020-12-22 08:12:20,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:20,781 INFO L225 Difference]: With dead ends: 3474 [2020-12-22 08:12:20,782 INFO L226 Difference]: Without dead ends: 2469 [2020-12-22 08:12:20,785 INFO L677 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 [2020-12-22 08:12:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-12-22 08:12:20,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2020-12-22 08:12:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2467 states. [2020-12-22 08:12:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4210 transitions. [2020-12-22 08:12:20,900 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4210 transitions. Word has length 192 [2020-12-22 08:12:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:20,901 INFO L481 AbstractCegarLoop]: Abstraction has 2467 states and 4210 transitions. [2020-12-22 08:12:20,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4210 transitions. [2020-12-22 08:12:20,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-12-22 08:12:20,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:20,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:20,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:12:20,907 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:20,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:20,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1139258805, now seen corresponding path program 1 times [2020-12-22 08:12:20,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:20,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57240584] [2020-12-22 08:12:20,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:21,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57240584] [2020-12-22 08:12:21,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:21,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:21,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885002031] [2020-12-22 08:12:21,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:21,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:21,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:21,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:21,167 INFO L87 Difference]: Start difference. First operand 2467 states and 4210 transitions. Second operand 3 states. [2020-12-22 08:12:21,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:21,328 INFO L93 Difference]: Finished difference Result 4337 states and 7367 transitions. [2020-12-22 08:12:21,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:21,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-12-22 08:12:21,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:21,348 INFO L225 Difference]: With dead ends: 4337 [2020-12-22 08:12:21,348 INFO L226 Difference]: Without dead ends: 3332 [2020-12-22 08:12:21,352 INFO L677 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 [2020-12-22 08:12:21,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2020-12-22 08:12:21,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 3330. [2020-12-22 08:12:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3330 states. [2020-12-22 08:12:21,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3330 states to 3330 states and 5659 transitions. [2020-12-22 08:12:21,536 INFO L78 Accepts]: Start accepts. Automaton has 3330 states and 5659 transitions. Word has length 196 [2020-12-22 08:12:21,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:21,536 INFO L481 AbstractCegarLoop]: Abstraction has 3330 states and 5659 transitions. [2020-12-22 08:12:21,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:21,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3330 states and 5659 transitions. [2020-12-22 08:12:21,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-12-22 08:12:21,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:21,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:21,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:12:21,541 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:21,543 INFO L82 PathProgramCache]: Analyzing trace with hash -939390388, now seen corresponding path program 1 times [2020-12-22 08:12:21,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:21,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348949541] [2020-12-22 08:12:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:21,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:21,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348949541] [2020-12-22 08:12:21,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:21,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:21,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209723538] [2020-12-22 08:12:21,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:21,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:21,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:21,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:21,760 INFO L87 Difference]: Start difference. First operand 3330 states and 5659 transitions. Second operand 3 states. [2020-12-22 08:12:22,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:22,068 INFO L93 Difference]: Finished difference Result 8626 states and 14523 transitions. [2020-12-22 08:12:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:22,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2020-12-22 08:12:22,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:22,103 INFO L225 Difference]: With dead ends: 8626 [2020-12-22 08:12:22,103 INFO L226 Difference]: Without dead ends: 5879 [2020-12-22 08:12:22,112 INFO L677 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 [2020-12-22 08:12:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5879 states. [2020-12-22 08:12:22,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5879 to 5877. [2020-12-22 08:12:22,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5877 states. [2020-12-22 08:12:22,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5877 states to 5877 states and 9883 transitions. [2020-12-22 08:12:22,506 INFO L78 Accepts]: Start accepts. Automaton has 5877 states and 9883 transitions. Word has length 196 [2020-12-22 08:12:22,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:22,507 INFO L481 AbstractCegarLoop]: Abstraction has 5877 states and 9883 transitions. [2020-12-22 08:12:22,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:22,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5877 states and 9883 transitions. [2020-12-22 08:12:22,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-12-22 08:12:22,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:22,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:22,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:12:22,513 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:22,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:22,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1438127064, now seen corresponding path program 1 times [2020-12-22 08:12:22,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:22,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561246274] [2020-12-22 08:12:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:22,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561246274] [2020-12-22 08:12:22,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:22,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:22,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975387686] [2020-12-22 08:12:22,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:22,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:22,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:22,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:22,763 INFO L87 Difference]: Start difference. First operand 5877 states and 9883 transitions. Second operand 3 states. [2020-12-22 08:12:23,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:23,225 INFO L93 Difference]: Finished difference Result 10823 states and 18189 transitions. [2020-12-22 08:12:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:23,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-12-22 08:12:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:23,292 INFO L225 Difference]: With dead ends: 10823 [2020-12-22 08:12:23,292 INFO L226 Difference]: Without dead ends: 8076 [2020-12-22 08:12:23,300 INFO L677 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 [2020-12-22 08:12:23,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2020-12-22 08:12:23,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 8074. [2020-12-22 08:12:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8074 states. [2020-12-22 08:12:23,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8074 states to 8074 states and 13547 transitions. [2020-12-22 08:12:23,788 INFO L78 Accepts]: Start accepts. Automaton has 8074 states and 13547 transitions. Word has length 200 [2020-12-22 08:12:23,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:23,788 INFO L481 AbstractCegarLoop]: Abstraction has 8074 states and 13547 transitions. [2020-12-22 08:12:23,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:23,789 INFO L276 IsEmpty]: Start isEmpty. Operand 8074 states and 13547 transitions. [2020-12-22 08:12:23,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-12-22 08:12:23,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:23,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:23,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:12:23,793 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:23,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:23,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1388814671, now seen corresponding path program 1 times [2020-12-22 08:12:23,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:23,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738358115] [2020-12-22 08:12:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:24,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738358115] [2020-12-22 08:12:24,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:24,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:24,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885293471] [2020-12-22 08:12:24,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:24,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:24,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:24,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:24,029 INFO L87 Difference]: Start difference. First operand 8074 states and 13547 transitions. Second operand 3 states. [2020-12-22 08:12:24,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:24,762 INFO L93 Difference]: Finished difference Result 22370 states and 37291 transitions. [2020-12-22 08:12:24,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:24,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-12-22 08:12:24,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:24,805 INFO L225 Difference]: With dead ends: 22370 [2020-12-22 08:12:24,805 INFO L226 Difference]: Without dead ends: 14925 [2020-12-22 08:12:24,820 INFO L677 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 [2020-12-22 08:12:24,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14925 states. [2020-12-22 08:12:25,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14925 to 14923. [2020-12-22 08:12:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14923 states. [2020-12-22 08:12:25,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14923 states to 14923 states and 24797 transitions. [2020-12-22 08:12:25,679 INFO L78 Accepts]: Start accepts. Automaton has 14923 states and 24797 transitions. Word has length 200 [2020-12-22 08:12:25,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:25,680 INFO L481 AbstractCegarLoop]: Abstraction has 14923 states and 24797 transitions. [2020-12-22 08:12:25,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:25,680 INFO L276 IsEmpty]: Start isEmpty. Operand 14923 states and 24797 transitions. [2020-12-22 08:12:25,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-22 08:12:25,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:25,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:25,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:12:25,686 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:25,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:25,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1584670309, now seen corresponding path program 1 times [2020-12-22 08:12:25,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:25,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582240065] [2020-12-22 08:12:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:25,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582240065] [2020-12-22 08:12:25,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:25,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:25,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100823030] [2020-12-22 08:12:25,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:25,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:25,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:25,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:25,909 INFO L87 Difference]: Start difference. First operand 14923 states and 24797 transitions. Second operand 3 states. [2020-12-22 08:12:26,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:26,843 INFO L93 Difference]: Finished difference Result 28077 states and 46723 transitions. [2020-12-22 08:12:26,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:26,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-12-22 08:12:26,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:26,896 INFO L225 Difference]: With dead ends: 28077 [2020-12-22 08:12:26,896 INFO L226 Difference]: Without dead ends: 20632 [2020-12-22 08:12:26,911 INFO L677 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 [2020-12-22 08:12:26,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20632 states. [2020-12-22 08:12:27,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20632 to 20630. [2020-12-22 08:12:27,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20630 states. [2020-12-22 08:12:27,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20630 states to 20630 states and 34227 transitions. [2020-12-22 08:12:27,966 INFO L78 Accepts]: Start accepts. Automaton has 20630 states and 34227 transitions. Word has length 204 [2020-12-22 08:12:27,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:27,967 INFO L481 AbstractCegarLoop]: Abstraction has 20630 states and 34227 transitions. [2020-12-22 08:12:27,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:27,967 INFO L276 IsEmpty]: Start isEmpty. Operand 20630 states and 34227 transitions. [2020-12-22 08:12:27,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-22 08:12:27,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:27,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:27,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:12:27,972 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:27,973 INFO L82 PathProgramCache]: Analyzing trace with hash -247447380, now seen corresponding path program 1 times [2020-12-22 08:12:27,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:27,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331409982] [2020-12-22 08:12:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:28,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331409982] [2020-12-22 08:12:28,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:28,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:12:28,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349160154] [2020-12-22 08:12:28,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:12:28,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:28,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:12:28,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:12:28,282 INFO L87 Difference]: Start difference. First operand 20630 states and 34227 transitions. Second operand 7 states. [2020-12-22 08:12:35,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:35,037 INFO L93 Difference]: Finished difference Result 146583 states and 244100 transitions. [2020-12-22 08:12:35,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 08:12:35,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-12-22 08:12:35,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:35,565 INFO L225 Difference]: With dead ends: 146583 [2020-12-22 08:12:35,565 INFO L226 Difference]: Without dead ends: 126628 [2020-12-22 08:12:35,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:12:35,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126628 states. [2020-12-22 08:12:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126628 to 40500. [2020-12-22 08:12:39,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40500 states. [2020-12-22 08:12:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40500 states to 40500 states and 66872 transitions. [2020-12-22 08:12:39,836 INFO L78 Accepts]: Start accepts. Automaton has 40500 states and 66872 transitions. Word has length 204 [2020-12-22 08:12:39,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:39,837 INFO L481 AbstractCegarLoop]: Abstraction has 40500 states and 66872 transitions. [2020-12-22 08:12:39,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:12:39,837 INFO L276 IsEmpty]: Start isEmpty. Operand 40500 states and 66872 transitions. [2020-12-22 08:12:39,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-12-22 08:12:39,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:39,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:39,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:12:39,842 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:39,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:39,843 INFO L82 PathProgramCache]: Analyzing trace with hash 847446003, now seen corresponding path program 1 times [2020-12-22 08:12:39,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:39,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725018786] [2020-12-22 08:12:39,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:40,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725018786] [2020-12-22 08:12:40,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:40,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:12:40,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329708157] [2020-12-22 08:12:40,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:12:40,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:40,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:12:40,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:12:40,006 INFO L87 Difference]: Start difference. First operand 40500 states and 66872 transitions. Second operand 4 states. [2020-12-22 08:12:44,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:44,142 INFO L93 Difference]: Finished difference Result 119299 states and 197712 transitions. [2020-12-22 08:12:44,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:12:44,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2020-12-22 08:12:44,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:44,316 INFO L225 Difference]: With dead ends: 119299 [2020-12-22 08:12:44,316 INFO L226 Difference]: Without dead ends: 79522 [2020-12-22 08:12:44,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:12:44,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79522 states. [2020-12-22 08:12:48,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79522 to 66490. [2020-12-22 08:12:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66490 states. [2020-12-22 08:12:48,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66490 states to 66490 states and 109880 transitions. [2020-12-22 08:12:48,749 INFO L78 Accepts]: Start accepts. Automaton has 66490 states and 109880 transitions. Word has length 205 [2020-12-22 08:12:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:48,749 INFO L481 AbstractCegarLoop]: Abstraction has 66490 states and 109880 transitions. [2020-12-22 08:12:48,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:12:48,749 INFO L276 IsEmpty]: Start isEmpty. Operand 66490 states and 109880 transitions. [2020-12-22 08:12:48,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-12-22 08:12:48,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:48,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:48,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:12:48,754 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:48,755 INFO L82 PathProgramCache]: Analyzing trace with hash -258860870, now seen corresponding path program 1 times [2020-12-22 08:12:48,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:48,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602641085] [2020-12-22 08:12:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:48,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:48,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602641085] [2020-12-22 08:12:48,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:48,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:12:48,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404827414] [2020-12-22 08:12:48,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:12:48,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:48,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:12:48,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:12:48,952 INFO L87 Difference]: Start difference. First operand 66490 states and 109880 transitions. Second operand 3 states. [2020-12-22 08:12:53,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:53,831 INFO L93 Difference]: Finished difference Result 126704 states and 209944 transitions. [2020-12-22 08:12:53,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:12:53,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2020-12-22 08:12:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:54,021 INFO L225 Difference]: With dead ends: 126704 [2020-12-22 08:12:54,022 INFO L226 Difference]: Without dead ends: 92036 [2020-12-22 08:12:54,080 INFO L677 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 [2020-12-22 08:12:54,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92036 states. [2020-12-22 08:12:59,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92036 to 92034. [2020-12-22 08:12:59,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92034 states. [2020-12-22 08:12:59,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92034 states to 92034 states and 151916 transitions. [2020-12-22 08:12:59,479 INFO L78 Accepts]: Start accepts. Automaton has 92034 states and 151916 transitions. Word has length 205 [2020-12-22 08:12:59,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:59,480 INFO L481 AbstractCegarLoop]: Abstraction has 92034 states and 151916 transitions. [2020-12-22 08:12:59,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:12:59,480 INFO L276 IsEmpty]: Start isEmpty. Operand 92034 states and 151916 transitions. [2020-12-22 08:12:59,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-12-22 08:12:59,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:59,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:12:59,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:12:59,485 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:59,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:59,485 INFO L82 PathProgramCache]: Analyzing trace with hash 433960531, now seen corresponding path program 1 times [2020-12-22 08:12:59,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:59,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976864787] [2020-12-22 08:12:59,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:59,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:12:59,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976864787] [2020-12-22 08:12:59,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:59,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:12:59,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361349849] [2020-12-22 08:12:59,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:12:59,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:59,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:12:59,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:12:59,824 INFO L87 Difference]: Start difference. First operand 92034 states and 151916 transitions. Second operand 4 states. [2020-12-22 08:13:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:09,943 INFO L93 Difference]: Finished difference Result 272296 states and 450306 transitions. [2020-12-22 08:13:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:13:09,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 206 [2020-12-22 08:13:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:10,446 INFO L225 Difference]: With dead ends: 272296 [2020-12-22 08:13:10,447 INFO L226 Difference]: Without dead ends: 180879 [2020-12-22 08:13:10,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:13:10,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180879 states. [2020-12-22 08:13:19,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180879 to 151240. [2020-12-22 08:13:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151240 states. [2020-12-22 08:13:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151240 states to 151240 states and 249186 transitions. [2020-12-22 08:13:19,757 INFO L78 Accepts]: Start accepts. Automaton has 151240 states and 249186 transitions. Word has length 206 [2020-12-22 08:13:19,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:19,757 INFO L481 AbstractCegarLoop]: Abstraction has 151240 states and 249186 transitions. [2020-12-22 08:13:19,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:13:19,758 INFO L276 IsEmpty]: Start isEmpty. Operand 151240 states and 249186 transitions. [2020-12-22 08:13:19,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-12-22 08:13:19,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:19,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:13:19,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:13:19,760 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:19,761 INFO L82 PathProgramCache]: Analyzing trace with hash 505370810, now seen corresponding path program 1 times [2020-12-22 08:13:19,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:19,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314907129] [2020-12-22 08:13:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:13:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:13:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:13:20,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314907129] [2020-12-22 08:13:20,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:13:20,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:13:20,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756375789] [2020-12-22 08:13:20,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:13:20,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:13:20,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:13:20,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:13:20,211 INFO L87 Difference]: Start difference. First operand 151240 states and 249186 transitions. Second operand 4 states. [2020-12-22 08:13:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:38,005 INFO L93 Difference]: Finished difference Result 446854 states and 737748 transitions. [2020-12-22 08:13:38,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:13:38,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2020-12-22 08:13:38,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:38,826 INFO L225 Difference]: With dead ends: 446854 [2020-12-22 08:13:38,826 INFO L226 Difference]: Without dead ends: 296231 [2020-12-22 08:13:38,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:13:39,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296231 states. [2020-12-22 08:13:54,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296231 to 248170. [2020-12-22 08:13:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248170 states. [2020-12-22 08:13:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248170 states to 248170 states and 408168 transitions. [2020-12-22 08:13:55,372 INFO L78 Accepts]: Start accepts. Automaton has 248170 states and 408168 transitions. Word has length 207 [2020-12-22 08:13:55,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:55,373 INFO L481 AbstractCegarLoop]: Abstraction has 248170 states and 408168 transitions. [2020-12-22 08:13:55,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:13:55,373 INFO L276 IsEmpty]: Start isEmpty. Operand 248170 states and 408168 transitions. [2020-12-22 08:13:55,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-12-22 08:13:55,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:55,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:13:55,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:13:55,382 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:55,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:55,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1571319814, now seen corresponding path program 1 times [2020-12-22 08:13:55,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:55,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475782409] [2020-12-22 08:13:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:13:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:13:55,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:13:55,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475782409] [2020-12-22 08:13:55,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:13:55,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:13:55,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048093292] [2020-12-22 08:13:55,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:13:55,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:13:55,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:13:55,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:13:55,542 INFO L87 Difference]: Start difference. First operand 248170 states and 408168 transitions. Second operand 4 states. [2020-12-22 08:14:26,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:26,699 INFO L93 Difference]: Finished difference Result 730000 states and 1203258 transitions. [2020-12-22 08:14:26,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:14:26,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2020-12-22 08:14:26,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:27,867 INFO L225 Difference]: With dead ends: 730000 [2020-12-22 08:14:27,867 INFO L226 Difference]: Without dead ends: 482447 [2020-12-22 08:14:28,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:14:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482447 states.