/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_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:06:15,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:06:15,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:06:15,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:06:15,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:06:15,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:06:15,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:06:15,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:06:15,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:06:15,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:06:15,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:06:15,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:06:15,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:06:15,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:06:15,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:06:15,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:06:15,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:06:15,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:06:15,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:06:15,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:06:15,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:06:15,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:06:15,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:06:15,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:06:15,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:06:15,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:06:15,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:06:15,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:06:15,470 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:06:15,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:06:15,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:06:15,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:06:15,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:06:15,526 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:06:15,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:06:15,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:06:15,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:06:15,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:06:15,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:06:15,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:06:15,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:06:15,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:06:15,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:06:15,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:06:15,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:06:15,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:06:15,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:06:15,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:06:15,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:06:15,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:06:15,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:06:15,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:06:15,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:06:15,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:06:15,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:06:15,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:06:15,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:06:15,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:06:15,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:06:15,968 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:06:15,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 09:06:16,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71703454d/d7783e6b706b4671afccdbb5d06013e5/FLAGd5c6d9d82 [2020-12-22 09:06:16,921 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:06:16,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 09:06:16,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71703454d/d7783e6b706b4671afccdbb5d06013e5/FLAGd5c6d9d82 [2020-12-22 09:06:17,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71703454d/d7783e6b706b4671afccdbb5d06013e5 [2020-12-22 09:06:17,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:06:17,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:06:17,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:06:17,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:06:17,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:06:17,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:06:17" (1/1) ... [2020-12-22 09:06:17,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6516bf55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:17, skipping insertion in model container [2020-12-22 09:06:17,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:06:17" (1/1) ... [2020-12-22 09:06:17,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:06:17,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:06:17,932 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_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[34453,34466] [2020-12-22 09:06:18,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:06:18,153 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:06:18,518 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_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[34453,34466] [2020-12-22 09:06:18,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:06:18,685 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:06:18,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:18 WrapperNode [2020-12-22 09:06:18,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:06:18,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:06:18,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:06:18,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:06:18,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:18" (1/1) ... [2020-12-22 09:06:18,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:18" (1/1) ... [2020-12-22 09:06:18,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:06:18,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:06:18,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:06:18,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:06:18,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:18" (1/1) ... [2020-12-22 09:06:18,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:18" (1/1) ... [2020-12-22 09:06:18,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:18" (1/1) ... [2020-12-22 09:06:18,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:18" (1/1) ... [2020-12-22 09:06:18,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:18" (1/1) ... [2020-12-22 09:06:18,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:18" (1/1) ... [2020-12-22 09:06:18,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:18" (1/1) ... [2020-12-22 09:06:18,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:06:18,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:06:18,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:06:18,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:06:18,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:18" (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 09:06:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:06:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:06:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:06:19,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:06:21,783 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:06:21,783 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:06:21,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:06:21 BoogieIcfgContainer [2020-12-22 09:06:21,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:06:21,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:06:21,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:06:21,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:06:21,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:06:17" (1/3) ... [2020-12-22 09:06:21,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582a6e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:06:21, skipping insertion in model container [2020-12-22 09:06:21,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:06:18" (2/3) ... [2020-12-22 09:06:21,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@582a6e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:06:21, skipping insertion in model container [2020-12-22 09:06:21,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:06:21" (3/3) ... [2020-12-22 09:06:21,801 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 09:06:21,809 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:06:21,815 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:06:21,839 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:06:21,893 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:06:21,893 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:06:21,893 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:06:21,893 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:06:21,893 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:06:21,894 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:06:21,894 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:06:21,894 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:06:21,935 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states. [2020-12-22 09:06:21,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-12-22 09:06:21,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:21,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:21,980 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:21,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:21,987 INFO L82 PathProgramCache]: Analyzing trace with hash -279814717, now seen corresponding path program 1 times [2020-12-22 09:06:21,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:21,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30989490] [2020-12-22 09:06:21,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:23,086 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 09:06:23,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30989490] [2020-12-22 09:06:23,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:23,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:23,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679081825] [2020-12-22 09:06:23,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:23,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:23,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:23,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:23,122 INFO L87 Difference]: Start difference. First operand 791 states. Second operand 3 states. [2020-12-22 09:06:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:23,549 INFO L93 Difference]: Finished difference Result 1508 states and 2652 transitions. [2020-12-22 09:06:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:23,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 314 [2020-12-22 09:06:23,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:23,593 INFO L225 Difference]: With dead ends: 1508 [2020-12-22 09:06:23,594 INFO L226 Difference]: Without dead ends: 1295 [2020-12-22 09:06:23,603 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 09:06:23,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2020-12-22 09:06:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1293. [2020-12-22 09:06:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1293 states. [2020-12-22 09:06:23,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 2024 transitions. [2020-12-22 09:06:23,761 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 2024 transitions. Word has length 314 [2020-12-22 09:06:23,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:23,763 INFO L481 AbstractCegarLoop]: Abstraction has 1293 states and 2024 transitions. [2020-12-22 09:06:23,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:23,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 2024 transitions. [2020-12-22 09:06:23,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-12-22 09:06:23,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:23,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:23,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:06:23,771 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:23,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1281342321, now seen corresponding path program 1 times [2020-12-22 09:06:23,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:23,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942851796] [2020-12-22 09:06:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:24,278 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 09:06:24,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942851796] [2020-12-22 09:06:24,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:24,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:24,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758260580] [2020-12-22 09:06:24,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:24,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:24,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:24,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:24,288 INFO L87 Difference]: Start difference. First operand 1293 states and 2024 transitions. Second operand 3 states. [2020-12-22 09:06:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:24,601 INFO L93 Difference]: Finished difference Result 2667 states and 4197 transitions. [2020-12-22 09:06:24,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:24,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 314 [2020-12-22 09:06:24,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:24,618 INFO L225 Difference]: With dead ends: 2667 [2020-12-22 09:06:24,619 INFO L226 Difference]: Without dead ends: 2285 [2020-12-22 09:06:24,628 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 09:06:24,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2020-12-22 09:06:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2283. [2020-12-22 09:06:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2283 states. [2020-12-22 09:06:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3560 transitions. [2020-12-22 09:06:24,758 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3560 transitions. Word has length 314 [2020-12-22 09:06:24,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:24,760 INFO L481 AbstractCegarLoop]: Abstraction has 2283 states and 3560 transitions. [2020-12-22 09:06:24,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3560 transitions. [2020-12-22 09:06:24,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-12-22 09:06:24,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:24,769 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:24,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:06:24,771 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:24,772 INFO L82 PathProgramCache]: Analyzing trace with hash -649561541, now seen corresponding path program 1 times [2020-12-22 09:06:24,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:24,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363125445] [2020-12-22 09:06:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:25,213 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 09:06:25,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363125445] [2020-12-22 09:06:25,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:25,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:25,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744636511] [2020-12-22 09:06:25,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:25,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:25,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:25,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:25,218 INFO L87 Difference]: Start difference. First operand 2283 states and 3560 transitions. Second operand 3 states. [2020-12-22 09:06:25,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:25,523 INFO L93 Difference]: Finished difference Result 4939 states and 7758 transitions. [2020-12-22 09:06:25,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:25,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 314 [2020-12-22 09:06:25,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:25,548 INFO L225 Difference]: With dead ends: 4939 [2020-12-22 09:06:25,549 INFO L226 Difference]: Without dead ends: 4225 [2020-12-22 09:06:25,552 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 09:06:25,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2020-12-22 09:06:25,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 4223. [2020-12-22 09:06:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4223 states. [2020-12-22 09:06:25,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4223 states to 4223 states and 6564 transitions. [2020-12-22 09:06:25,730 INFO L78 Accepts]: Start accepts. Automaton has 4223 states and 6564 transitions. Word has length 314 [2020-12-22 09:06:25,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:25,731 INFO L481 AbstractCegarLoop]: Abstraction has 4223 states and 6564 transitions. [2020-12-22 09:06:25,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:25,732 INFO L276 IsEmpty]: Start isEmpty. Operand 4223 states and 6564 transitions. [2020-12-22 09:06:25,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-12-22 09:06:25,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:25,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:25,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:06:25,744 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:25,745 INFO L82 PathProgramCache]: Analyzing trace with hash -422405895, now seen corresponding path program 1 times [2020-12-22 09:06:25,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:25,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231331676] [2020-12-22 09:06:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:26,184 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 09:06:26,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231331676] [2020-12-22 09:06:26,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:26,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:26,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198447672] [2020-12-22 09:06:26,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:26,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:26,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:26,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:26,189 INFO L87 Difference]: Start difference. First operand 4223 states and 6564 transitions. Second operand 3 states. [2020-12-22 09:06:26,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:26,621 INFO L93 Difference]: Finished difference Result 9355 states and 14666 transitions. [2020-12-22 09:06:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:26,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 314 [2020-12-22 09:06:26,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:26,662 INFO L225 Difference]: With dead ends: 9355 [2020-12-22 09:06:26,662 INFO L226 Difference]: Without dead ends: 8025 [2020-12-22 09:06:26,670 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 09:06:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8025 states. [2020-12-22 09:06:27,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8025 to 8023. [2020-12-22 09:06:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8023 states. [2020-12-22 09:06:27,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8023 states to 8023 states and 12436 transitions. [2020-12-22 09:06:27,053 INFO L78 Accepts]: Start accepts. Automaton has 8023 states and 12436 transitions. Word has length 314 [2020-12-22 09:06:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:27,054 INFO L481 AbstractCegarLoop]: Abstraction has 8023 states and 12436 transitions. [2020-12-22 09:06:27,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:27,054 INFO L276 IsEmpty]: Start isEmpty. Operand 8023 states and 12436 transitions. [2020-12-22 09:06:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-12-22 09:06:27,074 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:27,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:27,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:06:27,075 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:27,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:27,075 INFO L82 PathProgramCache]: Analyzing trace with hash 810173107, now seen corresponding path program 1 times [2020-12-22 09:06:27,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:27,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629993923] [2020-12-22 09:06:27,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:27,886 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 09:06:27,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629993923] [2020-12-22 09:06:27,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:27,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:06:27,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746754020] [2020-12-22 09:06:27,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:06:27,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:27,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:06:27,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:27,890 INFO L87 Difference]: Start difference. First operand 8023 states and 12436 transitions. Second operand 4 states. [2020-12-22 09:06:28,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:28,758 INFO L93 Difference]: Finished difference Result 23750 states and 36773 transitions. [2020-12-22 09:06:28,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:28,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 314 [2020-12-22 09:06:28,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:28,845 INFO L225 Difference]: With dead ends: 23750 [2020-12-22 09:06:28,845 INFO L226 Difference]: Without dead ends: 15738 [2020-12-22 09:06:28,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 09:06:28,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15738 states. [2020-12-22 09:06:29,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15738 to 15736. [2020-12-22 09:06:29,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15736 states. [2020-12-22 09:06:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15736 states to 15736 states and 24250 transitions. [2020-12-22 09:06:29,750 INFO L78 Accepts]: Start accepts. Automaton has 15736 states and 24250 transitions. Word has length 314 [2020-12-22 09:06:29,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:29,751 INFO L481 AbstractCegarLoop]: Abstraction has 15736 states and 24250 transitions. [2020-12-22 09:06:29,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:06:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 15736 states and 24250 transitions. [2020-12-22 09:06:29,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-12-22 09:06:29,786 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:29,787 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:29,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:06:29,787 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:29,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:29,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1891459364, now seen corresponding path program 1 times [2020-12-22 09:06:29,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:29,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581014501] [2020-12-22 09:06:29,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:30,176 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 09:06:30,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581014501] [2020-12-22 09:06:30,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:30,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:30,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583946229] [2020-12-22 09:06:30,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:30,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:30,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:30,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:30,179 INFO L87 Difference]: Start difference. First operand 15736 states and 24250 transitions. Second operand 3 states. [2020-12-22 09:06:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:31,402 INFO L93 Difference]: Finished difference Result 46477 states and 71514 transitions. [2020-12-22 09:06:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:31,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 316 [2020-12-22 09:06:31,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:31,482 INFO L225 Difference]: With dead ends: 46477 [2020-12-22 09:06:31,482 INFO L226 Difference]: Without dead ends: 30866 [2020-12-22 09:06:31,509 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 09:06:31,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30866 states. [2020-12-22 09:06:33,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30866 to 30864. [2020-12-22 09:06:33,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30864 states. [2020-12-22 09:06:33,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30864 states to 30864 states and 47281 transitions. [2020-12-22 09:06:33,287 INFO L78 Accepts]: Start accepts. Automaton has 30864 states and 47281 transitions. Word has length 316 [2020-12-22 09:06:33,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:33,288 INFO L481 AbstractCegarLoop]: Abstraction has 30864 states and 47281 transitions. [2020-12-22 09:06:33,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:33,288 INFO L276 IsEmpty]: Start isEmpty. Operand 30864 states and 47281 transitions. [2020-12-22 09:06:33,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-12-22 09:06:33,350 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:33,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:33,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:06:33,351 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:33,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:33,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1765799017, now seen corresponding path program 1 times [2020-12-22 09:06:33,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:33,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721637111] [2020-12-22 09:06:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:33,656 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 09:06:33,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721637111] [2020-12-22 09:06:33,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:33,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:33,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296647864] [2020-12-22 09:06:33,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:33,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:33,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:33,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:33,661 INFO L87 Difference]: Start difference. First operand 30864 states and 47281 transitions. Second operand 3 states. [2020-12-22 09:06:35,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:35,810 INFO L93 Difference]: Finished difference Result 92525 states and 141727 transitions. [2020-12-22 09:06:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:35,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 316 [2020-12-22 09:06:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:36,020 INFO L225 Difference]: With dead ends: 92525 [2020-12-22 09:06:36,020 INFO L226 Difference]: Without dead ends: 61699 [2020-12-22 09:06:36,109 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 09:06:36,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61699 states. [2020-12-22 09:06:37,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61699 to 30883. [2020-12-22 09:06:37,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30883 states. [2020-12-22 09:06:38,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30883 states to 30883 states and 47309 transitions. [2020-12-22 09:06:38,072 INFO L78 Accepts]: Start accepts. Automaton has 30883 states and 47309 transitions. Word has length 316 [2020-12-22 09:06:38,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:38,073 INFO L481 AbstractCegarLoop]: Abstraction has 30883 states and 47309 transitions. [2020-12-22 09:06:38,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:38,073 INFO L276 IsEmpty]: Start isEmpty. Operand 30883 states and 47309 transitions. [2020-12-22 09:06:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-12-22 09:06:38,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:38,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:38,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:06:38,138 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:38,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:38,139 INFO L82 PathProgramCache]: Analyzing trace with hash -906713469, now seen corresponding path program 1 times [2020-12-22 09:06:38,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:38,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500103241] [2020-12-22 09:06:38,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:38,340 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 09:06:38,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500103241] [2020-12-22 09:06:38,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:38,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:38,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741768906] [2020-12-22 09:06:38,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:38,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:38,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:38,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:38,346 INFO L87 Difference]: Start difference. First operand 30883 states and 47309 transitions. Second operand 3 states. [2020-12-22 09:06:40,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:40,249 INFO L93 Difference]: Finished difference Result 92544 states and 141748 transitions. [2020-12-22 09:06:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:40,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 317 [2020-12-22 09:06:40,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:40,387 INFO L225 Difference]: With dead ends: 92544 [2020-12-22 09:06:40,387 INFO L226 Difference]: Without dead ends: 61717 [2020-12-22 09:06:40,432 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 09:06:40,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61717 states. [2020-12-22 09:06:42,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61717 to 30901. [2020-12-22 09:06:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30901 states. [2020-12-22 09:06:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30901 states to 30901 states and 47330 transitions. [2020-12-22 09:06:42,322 INFO L78 Accepts]: Start accepts. Automaton has 30901 states and 47330 transitions. Word has length 317 [2020-12-22 09:06:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:42,322 INFO L481 AbstractCegarLoop]: Abstraction has 30901 states and 47330 transitions. [2020-12-22 09:06:42,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:42,322 INFO L276 IsEmpty]: Start isEmpty. Operand 30901 states and 47330 transitions. [2020-12-22 09:06:42,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-12-22 09:06:42,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:42,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:42,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:06:42,354 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:42,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:42,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1327805599, now seen corresponding path program 1 times [2020-12-22 09:06:42,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:42,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288282496] [2020-12-22 09:06:42,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:42,788 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 09:06:42,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288282496] [2020-12-22 09:06:42,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:42,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:06:42,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122991666] [2020-12-22 09:06:42,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:06:42,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:42,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:06:42,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:06:42,799 INFO L87 Difference]: Start difference. First operand 30901 states and 47330 transitions. Second operand 3 states. [2020-12-22 09:06:44,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:44,959 INFO L93 Difference]: Finished difference Result 87742 states and 134155 transitions. [2020-12-22 09:06:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:06:44,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 318 [2020-12-22 09:06:44,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:45,064 INFO L225 Difference]: With dead ends: 87742 [2020-12-22 09:06:45,064 INFO L226 Difference]: Without dead ends: 57082 [2020-12-22 09:06:45,098 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 09:06:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57082 states. [2020-12-22 09:06:47,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57082 to 57080. [2020-12-22 09:06:47,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57080 states. [2020-12-22 09:06:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57080 states to 57080 states and 86826 transitions. [2020-12-22 09:06:47,769 INFO L78 Accepts]: Start accepts. Automaton has 57080 states and 86826 transitions. Word has length 318 [2020-12-22 09:06:47,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:47,770 INFO L481 AbstractCegarLoop]: Abstraction has 57080 states and 86826 transitions. [2020-12-22 09:06:47,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:06:47,770 INFO L276 IsEmpty]: Start isEmpty. Operand 57080 states and 86826 transitions. [2020-12-22 09:06:47,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-12-22 09:06:47,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:47,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:47,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:06:47,834 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:47,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:47,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1728443076, now seen corresponding path program 1 times [2020-12-22 09:06:47,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:47,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895042118] [2020-12-22 09:06:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:48,745 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 09:06:48,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895042118] [2020-12-22 09:06:48,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:48,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:06:48,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581054383] [2020-12-22 09:06:48,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:06:48,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:48,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:06:48,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:06:48,748 INFO L87 Difference]: Start difference. First operand 57080 states and 86826 transitions. Second operand 5 states. [2020-12-22 09:06:53,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:53,320 INFO L93 Difference]: Finished difference Result 168628 states and 256099 transitions. [2020-12-22 09:06:53,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:06:53,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-12-22 09:06:53,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:53,506 INFO L225 Difference]: With dead ends: 168628 [2020-12-22 09:06:53,506 INFO L226 Difference]: Without dead ends: 111603 [2020-12-22 09:06:53,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:06:53,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111603 states. [2020-12-22 09:06:58,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111603 to 111601. [2020-12-22 09:06:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111601 states. [2020-12-22 09:06:58,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111601 states to 111601 states and 168563 transitions. [2020-12-22 09:06:58,825 INFO L78 Accepts]: Start accepts. Automaton has 111601 states and 168563 transitions. Word has length 318 [2020-12-22 09:06:58,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:06:58,826 INFO L481 AbstractCegarLoop]: Abstraction has 111601 states and 168563 transitions. [2020-12-22 09:06:58,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:06:58,826 INFO L276 IsEmpty]: Start isEmpty. Operand 111601 states and 168563 transitions. [2020-12-22 09:06:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-12-22 09:06:59,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:06:59,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:59,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:06:59,227 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:06:59,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:06:59,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1034307444, now seen corresponding path program 1 times [2020-12-22 09:06:59,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:06:59,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999849397] [2020-12-22 09:06:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:06:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:06:59,603 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 09:06:59,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999849397] [2020-12-22 09:06:59,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:06:59,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:06:59,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783381897] [2020-12-22 09:06:59,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:06:59,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:06:59,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:06:59,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:06:59,605 INFO L87 Difference]: Start difference. First operand 111601 states and 168563 transitions. Second operand 4 states. [2020-12-22 09:07:08,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:08,288 INFO L93 Difference]: Finished difference Result 329969 states and 497637 transitions. [2020-12-22 09:07:08,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:07:08,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 320 [2020-12-22 09:07:08,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:08,620 INFO L225 Difference]: With dead ends: 329969 [2020-12-22 09:07:08,620 INFO L226 Difference]: Without dead ends: 218565 [2020-12-22 09:07:08,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 09:07:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218565 states. [2020-12-22 09:07:19,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218565 to 218563. [2020-12-22 09:07:19,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218563 states. [2020-12-22 09:07:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218563 states to 218563 states and 327844 transitions. [2020-12-22 09:07:19,721 INFO L78 Accepts]: Start accepts. Automaton has 218563 states and 327844 transitions. Word has length 320 [2020-12-22 09:07:19,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:19,721 INFO L481 AbstractCegarLoop]: Abstraction has 218563 states and 327844 transitions. [2020-12-22 09:07:19,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:07:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 218563 states and 327844 transitions. [2020-12-22 09:07:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-12-22 09:07:19,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:19,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:19,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:07:19,880 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:19,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:19,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1522861684, now seen corresponding path program 1 times [2020-12-22 09:07:19,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:19,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117900714] [2020-12-22 09:07:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:20,574 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 09:07:20,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117900714] [2020-12-22 09:07:20,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:20,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:20,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821370330] [2020-12-22 09:07:20,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:20,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:20,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:20,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:20,578 INFO L87 Difference]: Start difference. First operand 218563 states and 327844 transitions. Second operand 3 states. [2020-12-22 09:07:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:37,446 INFO L93 Difference]: Finished difference Result 645729 states and 966892 transitions. [2020-12-22 09:07:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:37,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 322 [2020-12-22 09:07:37,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:38,197 INFO L225 Difference]: With dead ends: 645729 [2020-12-22 09:07:38,197 INFO L226 Difference]: Without dead ends: 428059 [2020-12-22 09:07:38,788 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 09:07:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428059 states. [2020-12-22 09:07:58,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428059 to 428057. [2020-12-22 09:07:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428057 states. [2020-12-22 09:07:59,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428057 states to 428057 states and 637530 transitions. [2020-12-22 09:07:59,798 INFO L78 Accepts]: Start accepts. Automaton has 428057 states and 637530 transitions. Word has length 322 [2020-12-22 09:07:59,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:59,799 INFO L481 AbstractCegarLoop]: Abstraction has 428057 states and 637530 transitions. [2020-12-22 09:07:59,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:59,799 INFO L276 IsEmpty]: Start isEmpty. Operand 428057 states and 637530 transitions. [2020-12-22 09:08:00,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-12-22 09:08:00,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:00,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:00,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:08:00,801 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:00,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:00,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1066094215, now seen corresponding path program 1 times [2020-12-22 09:08:00,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:00,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715484721] [2020-12-22 09:08:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:00,928 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 09:08:00,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715484721] [2020-12-22 09:08:00,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:00,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:00,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381067513] [2020-12-22 09:08:00,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:00,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:00,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:00,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:00,931 INFO L87 Difference]: Start difference. First operand 428057 states and 637530 transitions. Second operand 3 states.