/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.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:13:43,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:13:43,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:13:43,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:13:43,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:13:43,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:13:43,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:13:43,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:13:43,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:13:43,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:13:43,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:13:43,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:13:43,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:13:43,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:13:43,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:13:43,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:13:43,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:13:43,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:13:43,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:13:43,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:13:43,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:13:43,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:13:43,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:13:43,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:13:43,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:13:43,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:13:43,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:13:43,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:13:43,927 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:13:43,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:13:43,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:13:43,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:13:43,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:13:43,984 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:13:43,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:13:43,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:13:43,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:13:43,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:13:43,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:13:43,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:13:43,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:13:43,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:13:43,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:13:43,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:13:43,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:13:43,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:13:43,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:13:43,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:13:43,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:13:43,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:13:43,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:13:43,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:13:43,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:13:43,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:13:43,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:13:44,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:13:44,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:13:44,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:13:44,489 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:13:44,490 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:13:44,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 09:13:44,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c009f624/076d623c1369430db17d4ce2ce6e105c/FLAG76e721e9d [2020-12-22 09:13:45,557 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:13:45,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 09:13:45,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c009f624/076d623c1369430db17d4ce2ce6e105c/FLAG76e721e9d [2020-12-22 09:13:46,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c009f624/076d623c1369430db17d4ce2ce6e105c [2020-12-22 09:13:46,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:13:46,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:13:46,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:13:46,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:13:46,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:13:46,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:13:46" (1/1) ... [2020-12-22 09:13:46,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b312d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:46, skipping insertion in model container [2020-12-22 09:13:46,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:13:46" (1/1) ... [2020-12-22 09:13:46,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:13:46,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:13:47,018 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.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[39653,39666] [2020-12-22 09:13:47,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:13:47,472 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:13:47,821 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.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[39653,39666] [2020-12-22 09:13:48,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:13:48,207 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:13:48,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:48 WrapperNode [2020-12-22 09:13:48,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:13:48,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:13:48,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:13:48,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:13:48,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:48" (1/1) ... [2020-12-22 09:13:48,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:48" (1/1) ... [2020-12-22 09:13:48,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:13:48,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:13:48,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:13:48,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:13:48,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:48" (1/1) ... [2020-12-22 09:13:48,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:48" (1/1) ... [2020-12-22 09:13:48,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:48" (1/1) ... [2020-12-22 09:13:48,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:48" (1/1) ... [2020-12-22 09:13:48,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:48" (1/1) ... [2020-12-22 09:13:48,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:48" (1/1) ... [2020-12-22 09:13:48,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:48" (1/1) ... [2020-12-22 09:13:48,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:13:48,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:13:48,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:13:48,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:13:48,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:48" (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 09:13:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:13:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:13:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:13:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:13:55,240 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:13:55,241 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:13:55,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:13:55 BoogieIcfgContainer [2020-12-22 09:13:55,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:13:55,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:13:55,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:13:55,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:13:55,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:13:46" (1/3) ... [2020-12-22 09:13:55,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ceaba72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:13:55, skipping insertion in model container [2020-12-22 09:13:55,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:48" (2/3) ... [2020-12-22 09:13:55,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ceaba72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:13:55, skipping insertion in model container [2020-12-22 09:13:55,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:13:55" (3/3) ... [2020-12-22 09:13:55,259 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 09:13:55,268 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:13:55,275 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:13:55,299 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:13:55,354 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:13:55,354 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:13:55,354 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:13:55,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:13:55,355 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:13:55,355 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:13:55,355 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:13:55,355 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:13:55,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states. [2020-12-22 09:13:55,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-12-22 09:13:55,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:55,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:55,454 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:55,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:55,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1002578946, now seen corresponding path program 1 times [2020-12-22 09:13:55,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:55,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245534287] [2020-12-22 09:13:55,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:56,600 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 09:13:56,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245534287] [2020-12-22 09:13:56,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:56,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:56,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545958119] [2020-12-22 09:13:56,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:56,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:56,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:56,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:56,637 INFO L87 Difference]: Start difference. First operand 1544 states. Second operand 3 states. [2020-12-22 09:13:56,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:56,957 INFO L93 Difference]: Finished difference Result 3068 states and 5360 transitions. [2020-12-22 09:13:56,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:56,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 387 [2020-12-22 09:13:56,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:57,008 INFO L225 Difference]: With dead ends: 3068 [2020-12-22 09:13:57,009 INFO L226 Difference]: Without dead ends: 2132 [2020-12-22 09:13:57,063 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 09:13:57,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2020-12-22 09:13:57,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2130. [2020-12-22 09:13:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2130 states. [2020-12-22 09:13:57,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 3563 transitions. [2020-12-22 09:13:57,277 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 3563 transitions. Word has length 387 [2020-12-22 09:13:57,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:57,283 INFO L481 AbstractCegarLoop]: Abstraction has 2130 states and 3563 transitions. [2020-12-22 09:13:57,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:57,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 3563 transitions. [2020-12-22 09:13:57,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-12-22 09:13:57,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:57,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:57,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:13:57,300 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:57,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:57,303 INFO L82 PathProgramCache]: Analyzing trace with hash -51566649, now seen corresponding path program 1 times [2020-12-22 09:13:57,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:57,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653410026] [2020-12-22 09:13:57,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:57,837 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 09:13:57,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653410026] [2020-12-22 09:13:57,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:57,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:57,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383242916] [2020-12-22 09:13:57,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:57,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:57,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:57,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:57,846 INFO L87 Difference]: Start difference. First operand 2130 states and 3563 transitions. Second operand 3 states. [2020-12-22 09:13:58,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:58,126 INFO L93 Difference]: Finished difference Result 4620 states and 7643 transitions. [2020-12-22 09:13:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:58,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 387 [2020-12-22 09:13:58,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:58,149 INFO L225 Difference]: With dead ends: 4620 [2020-12-22 09:13:58,150 INFO L226 Difference]: Without dead ends: 3132 [2020-12-22 09:13:58,156 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 09:13:58,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2020-12-22 09:13:58,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3130. [2020-12-22 09:13:58,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3130 states. [2020-12-22 09:13:58,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 5192 transitions. [2020-12-22 09:13:58,311 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 5192 transitions. Word has length 387 [2020-12-22 09:13:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:58,313 INFO L481 AbstractCegarLoop]: Abstraction has 3130 states and 5192 transitions. [2020-12-22 09:13:58,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:58,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 5192 transitions. [2020-12-22 09:13:58,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-12-22 09:13:58,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:58,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:58,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:13:58,328 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:58,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:58,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1037279821, now seen corresponding path program 1 times [2020-12-22 09:13:58,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:58,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884980891] [2020-12-22 09:13:58,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:59,377 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 09:13:59,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884980891] [2020-12-22 09:13:59,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:59,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:13:59,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438554155] [2020-12-22 09:13:59,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:13:59,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:59,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:13:59,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:13:59,394 INFO L87 Difference]: Start difference. First operand 3130 states and 5192 transitions. Second operand 7 states. [2020-12-22 09:14:00,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:00,918 INFO L93 Difference]: Finished difference Result 10182 states and 17158 transitions. [2020-12-22 09:14:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:14:00,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 387 [2020-12-22 09:14:00,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:00,984 INFO L225 Difference]: With dead ends: 10182 [2020-12-22 09:14:00,984 INFO L226 Difference]: Without dead ends: 9460 [2020-12-22 09:14:00,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 09:14:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9460 states. [2020-12-22 09:14:01,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9460 to 4186. [2020-12-22 09:14:01,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4186 states. [2020-12-22 09:14:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 6964 transitions. [2020-12-22 09:14:01,362 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 6964 transitions. Word has length 387 [2020-12-22 09:14:01,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:01,363 INFO L481 AbstractCegarLoop]: Abstraction has 4186 states and 6964 transitions. [2020-12-22 09:14:01,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:14:01,364 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 6964 transitions. [2020-12-22 09:14:01,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-12-22 09:14:01,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:01,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:01,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:14:01,380 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:01,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:01,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1520239872, now seen corresponding path program 1 times [2020-12-22 09:14:01,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:01,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938573090] [2020-12-22 09:14:01,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:01,918 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 09:14:01,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938573090] [2020-12-22 09:14:01,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:01,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:14:01,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645619635] [2020-12-22 09:14:01,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:14:01,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:01,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:14:01,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:14:01,922 INFO L87 Difference]: Start difference. First operand 4186 states and 6964 transitions. Second operand 4 states. [2020-12-22 09:14:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:02,535 INFO L93 Difference]: Finished difference Result 8464 states and 14195 transitions. [2020-12-22 09:14:02,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:14:02,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 388 [2020-12-22 09:14:02,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:02,575 INFO L225 Difference]: With dead ends: 8464 [2020-12-22 09:14:02,575 INFO L226 Difference]: Without dead ends: 7022 [2020-12-22 09:14:02,581 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 09:14:02,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7022 states. [2020-12-22 09:14:02,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7022 to 6120. [2020-12-22 09:14:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6120 states. [2020-12-22 09:14:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6120 states to 6120 states and 10214 transitions. [2020-12-22 09:14:03,006 INFO L78 Accepts]: Start accepts. Automaton has 6120 states and 10214 transitions. Word has length 388 [2020-12-22 09:14:03,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:03,007 INFO L481 AbstractCegarLoop]: Abstraction has 6120 states and 10214 transitions. [2020-12-22 09:14:03,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:14:03,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6120 states and 10214 transitions. [2020-12-22 09:14:03,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-12-22 09:14:03,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:03,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:03,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:14:03,023 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:03,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:03,024 INFO L82 PathProgramCache]: Analyzing trace with hash -964150955, now seen corresponding path program 1 times [2020-12-22 09:14:03,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:03,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289381365] [2020-12-22 09:14:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:03,812 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 09:14:03,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289381365] [2020-12-22 09:14:03,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:03,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:14:03,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490658266] [2020-12-22 09:14:03,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:14:03,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:03,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:14:03,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:14:03,816 INFO L87 Difference]: Start difference. First operand 6120 states and 10214 transitions. Second operand 7 states. [2020-12-22 09:14:05,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:05,146 INFO L93 Difference]: Finished difference Result 12862 states and 21652 transitions. [2020-12-22 09:14:05,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:14:05,148 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 389 [2020-12-22 09:14:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:05,190 INFO L225 Difference]: With dead ends: 12862 [2020-12-22 09:14:05,190 INFO L226 Difference]: Without dead ends: 11424 [2020-12-22 09:14:05,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:14:05,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11424 states. [2020-12-22 09:14:05,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11424 to 7684. [2020-12-22 09:14:05,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7684 states. [2020-12-22 09:14:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7684 states to 7684 states and 12859 transitions. [2020-12-22 09:14:05,820 INFO L78 Accepts]: Start accepts. Automaton has 7684 states and 12859 transitions. Word has length 389 [2020-12-22 09:14:05,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:05,821 INFO L481 AbstractCegarLoop]: Abstraction has 7684 states and 12859 transitions. [2020-12-22 09:14:05,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:14:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 7684 states and 12859 transitions. [2020-12-22 09:14:05,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-12-22 09:14:05,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:05,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:05,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:14:05,839 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:05,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1430414655, now seen corresponding path program 1 times [2020-12-22 09:14:05,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:05,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497130053] [2020-12-22 09:14:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:06,415 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 09:14:06,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497130053] [2020-12-22 09:14:06,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:06,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:14:06,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520623044] [2020-12-22 09:14:06,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:14:06,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:06,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:14:06,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:14:06,418 INFO L87 Difference]: Start difference. First operand 7684 states and 12859 transitions. Second operand 7 states. [2020-12-22 09:14:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:07,794 INFO L93 Difference]: Finished difference Result 14306 states and 24096 transitions. [2020-12-22 09:14:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:14:07,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 389 [2020-12-22 09:14:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:07,831 INFO L225 Difference]: With dead ends: 14306 [2020-12-22 09:14:07,832 INFO L226 Difference]: Without dead ends: 12868 [2020-12-22 09:14:07,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:14:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12868 states. [2020-12-22 09:14:08,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12868 to 9134. [2020-12-22 09:14:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9134 states. [2020-12-22 09:14:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9134 states to 9134 states and 15309 transitions. [2020-12-22 09:14:08,582 INFO L78 Accepts]: Start accepts. Automaton has 9134 states and 15309 transitions. Word has length 389 [2020-12-22 09:14:08,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:08,583 INFO L481 AbstractCegarLoop]: Abstraction has 9134 states and 15309 transitions. [2020-12-22 09:14:08,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:14:08,584 INFO L276 IsEmpty]: Start isEmpty. Operand 9134 states and 15309 transitions. [2020-12-22 09:14:08,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-12-22 09:14:08,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:08,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:08,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:14:08,604 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:08,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:08,605 INFO L82 PathProgramCache]: Analyzing trace with hash -796470246, now seen corresponding path program 1 times [2020-12-22 09:14:08,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:08,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995328428] [2020-12-22 09:14:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:09,186 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 09:14:09,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995328428] [2020-12-22 09:14:09,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:09,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:14:09,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005677614] [2020-12-22 09:14:09,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:14:09,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:09,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:14:09,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:14:09,190 INFO L87 Difference]: Start difference. First operand 9134 states and 15309 transitions. Second operand 4 states. [2020-12-22 09:14:10,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:10,320 INFO L93 Difference]: Finished difference Result 22658 states and 38216 transitions. [2020-12-22 09:14:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:14:10,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 389 [2020-12-22 09:14:10,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:10,372 INFO L225 Difference]: With dead ends: 22658 [2020-12-22 09:14:10,373 INFO L226 Difference]: Without dead ends: 16912 [2020-12-22 09:14:10,390 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 09:14:10,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16912 states. [2020-12-22 09:14:11,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16912 to 15328. [2020-12-22 09:14:11,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15328 states. [2020-12-22 09:14:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15328 states to 15328 states and 25752 transitions. [2020-12-22 09:14:11,686 INFO L78 Accepts]: Start accepts. Automaton has 15328 states and 25752 transitions. Word has length 389 [2020-12-22 09:14:11,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:11,687 INFO L481 AbstractCegarLoop]: Abstraction has 15328 states and 25752 transitions. [2020-12-22 09:14:11,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:14:11,688 INFO L276 IsEmpty]: Start isEmpty. Operand 15328 states and 25752 transitions. [2020-12-22 09:14:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-12-22 09:14:11,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:11,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:11,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:14:11,703 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:11,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:11,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1890073437, now seen corresponding path program 1 times [2020-12-22 09:14:11,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:11,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634501440] [2020-12-22 09:14:11,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:12,339 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 09:14:12,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634501440] [2020-12-22 09:14:12,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:12,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:14:12,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099261420] [2020-12-22 09:14:12,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:14:12,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:12,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:14:12,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:14:12,343 INFO L87 Difference]: Start difference. First operand 15328 states and 25752 transitions. Second operand 7 states. [2020-12-22 09:14:14,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:14,650 INFO L93 Difference]: Finished difference Result 25608 states and 43195 transitions. [2020-12-22 09:14:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:14:14,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 389 [2020-12-22 09:14:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:14,719 INFO L225 Difference]: With dead ends: 25608 [2020-12-22 09:14:14,720 INFO L226 Difference]: Without dead ends: 24170 [2020-12-22 09:14:14,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:14:14,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24170 states. [2020-12-22 09:14:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24170 to 16934. [2020-12-22 09:14:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16934 states. [2020-12-22 09:14:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16934 states to 16934 states and 28466 transitions. [2020-12-22 09:14:16,295 INFO L78 Accepts]: Start accepts. Automaton has 16934 states and 28466 transitions. Word has length 389 [2020-12-22 09:14:16,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:16,296 INFO L481 AbstractCegarLoop]: Abstraction has 16934 states and 28466 transitions. [2020-12-22 09:14:16,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:14:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 16934 states and 28466 transitions. [2020-12-22 09:14:16,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-12-22 09:14:16,312 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:16,312 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:16,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:14:16,313 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:16,314 INFO L82 PathProgramCache]: Analyzing trace with hash 404518151, now seen corresponding path program 1 times [2020-12-22 09:14:16,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:16,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677305111] [2020-12-22 09:14:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:16,876 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 09:14:16,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677305111] [2020-12-22 09:14:16,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:16,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:14:16,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218207408] [2020-12-22 09:14:16,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:14:16,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:16,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:14:16,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:14:16,880 INFO L87 Difference]: Start difference. First operand 16934 states and 28466 transitions. Second operand 4 states. [2020-12-22 09:14:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:18,771 INFO L93 Difference]: Finished difference Result 43349 states and 73176 transitions. [2020-12-22 09:14:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:14:18,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 390 [2020-12-22 09:14:18,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:18,834 INFO L225 Difference]: With dead ends: 43349 [2020-12-22 09:14:18,834 INFO L226 Difference]: Without dead ends: 30439 [2020-12-22 09:14:18,865 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 09:14:18,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30439 states. [2020-12-22 09:14:21,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30439 to 27411. [2020-12-22 09:14:21,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27411 states. [2020-12-22 09:14:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27411 states to 27411 states and 46120 transitions. [2020-12-22 09:14:21,343 INFO L78 Accepts]: Start accepts. Automaton has 27411 states and 46120 transitions. Word has length 390 [2020-12-22 09:14:21,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:21,344 INFO L481 AbstractCegarLoop]: Abstraction has 27411 states and 46120 transitions. [2020-12-22 09:14:21,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:14:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 27411 states and 46120 transitions. [2020-12-22 09:14:21,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-12-22 09:14:21,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:21,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:21,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:14:21,363 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:21,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:21,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1307189151, now seen corresponding path program 1 times [2020-12-22 09:14:21,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:21,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728891934] [2020-12-22 09:14:21,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:22,304 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 09:14:22,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728891934] [2020-12-22 09:14:22,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:22,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:22,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221819352] [2020-12-22 09:14:22,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:22,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:22,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:22,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:22,310 INFO L87 Difference]: Start difference. First operand 27411 states and 46120 transitions. Second operand 3 states. [2020-12-22 09:14:24,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:24,338 INFO L93 Difference]: Finished difference Result 52337 states and 88154 transitions. [2020-12-22 09:14:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:24,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 391 [2020-12-22 09:14:24,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:24,384 INFO L225 Difference]: With dead ends: 52337 [2020-12-22 09:14:24,385 INFO L226 Difference]: Without dead ends: 26006 [2020-12-22 09:14:24,420 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 09:14:24,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26006 states. [2020-12-22 09:14:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26006 to 26004. [2020-12-22 09:14:26,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26004 states. [2020-12-22 09:14:26,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26004 states to 26004 states and 43778 transitions. [2020-12-22 09:14:26,548 INFO L78 Accepts]: Start accepts. Automaton has 26004 states and 43778 transitions. Word has length 391 [2020-12-22 09:14:26,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:26,549 INFO L481 AbstractCegarLoop]: Abstraction has 26004 states and 43778 transitions. [2020-12-22 09:14:26,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:26,549 INFO L276 IsEmpty]: Start isEmpty. Operand 26004 states and 43778 transitions. [2020-12-22 09:14:26,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-12-22 09:14:26,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:26,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:26,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:14:26,562 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:26,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:26,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1252890149, now seen corresponding path program 1 times [2020-12-22 09:14:26,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:26,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449681306] [2020-12-22 09:14:26,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:27,460 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 09:14:27,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449681306] [2020-12-22 09:14:27,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:27,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:27,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861910120] [2020-12-22 09:14:27,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:27,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:27,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:27,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:27,465 INFO L87 Difference]: Start difference. First operand 26004 states and 43778 transitions. Second operand 3 states. [2020-12-22 09:14:28,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:28,715 INFO L93 Difference]: Finished difference Result 38667 states and 65102 transitions. [2020-12-22 09:14:28,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:28,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 391 [2020-12-22 09:14:28,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:28,733 INFO L225 Difference]: With dead ends: 38667 [2020-12-22 09:14:28,733 INFO L226 Difference]: Without dead ends: 13615 [2020-12-22 09:14:28,756 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 09:14:28,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13615 states. [2020-12-22 09:14:29,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13615 to 13613. [2020-12-22 09:14:29,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13613 states. [2020-12-22 09:14:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13613 states to 13613 states and 22894 transitions. [2020-12-22 09:14:29,640 INFO L78 Accepts]: Start accepts. Automaton has 13613 states and 22894 transitions. Word has length 391 [2020-12-22 09:14:29,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:29,640 INFO L481 AbstractCegarLoop]: Abstraction has 13613 states and 22894 transitions. [2020-12-22 09:14:29,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 13613 states and 22894 transitions. [2020-12-22 09:14:29,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-12-22 09:14:29,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:29,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:29,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:14:29,646 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:29,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:29,647 INFO L82 PathProgramCache]: Analyzing trace with hash 982667962, now seen corresponding path program 1 times [2020-12-22 09:14:29,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:29,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944460149] [2020-12-22 09:14:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:30,196 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 09:14:30,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944460149] [2020-12-22 09:14:30,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:30,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:30,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788801658] [2020-12-22 09:14:30,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:30,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:30,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:30,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:30,200 INFO L87 Difference]: Start difference. First operand 13613 states and 22894 transitions. Second operand 3 states. [2020-12-22 09:14:31,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:31,786 INFO L93 Difference]: Finished difference Result 38123 states and 63949 transitions. [2020-12-22 09:14:31,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:31,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 391 [2020-12-22 09:14:31,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:31,817 INFO L225 Difference]: With dead ends: 38123 [2020-12-22 09:14:31,818 INFO L226 Difference]: Without dead ends: 25270 [2020-12-22 09:14:31,829 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 09:14:31,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25270 states. [2020-12-22 09:14:33,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25270 to 23526. [2020-12-22 09:14:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23526 states. [2020-12-22 09:14:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23526 states to 23526 states and 39412 transitions. [2020-12-22 09:14:33,433 INFO L78 Accepts]: Start accepts. Automaton has 23526 states and 39412 transitions. Word has length 391 [2020-12-22 09:14:33,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:33,434 INFO L481 AbstractCegarLoop]: Abstraction has 23526 states and 39412 transitions. [2020-12-22 09:14:33,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 23526 states and 39412 transitions. [2020-12-22 09:14:33,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-12-22 09:14:33,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:33,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:33,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:14:33,444 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:33,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1104706486, now seen corresponding path program 1 times [2020-12-22 09:14:33,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:33,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98891597] [2020-12-22 09:14:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:33,819 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 09:14:33,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98891597] [2020-12-22 09:14:33,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:33,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:33,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940154594] [2020-12-22 09:14:33,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:33,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:33,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:33,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:33,822 INFO L87 Difference]: Start difference. First operand 23526 states and 39412 transitions. Second operand 3 states. [2020-12-22 09:14:35,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:35,961 INFO L93 Difference]: Finished difference Result 53995 states and 90498 transitions. [2020-12-22 09:14:35,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:35,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 391 [2020-12-22 09:14:35,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:36,005 INFO L225 Difference]: With dead ends: 53995 [2020-12-22 09:14:36,005 INFO L226 Difference]: Without dead ends: 33032 [2020-12-22 09:14:36,031 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 09:14:36,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33032 states. [2020-12-22 09:14:38,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33032 to 33028. [2020-12-22 09:14:38,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33028 states. [2020-12-22 09:14:38,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33028 states to 33028 states and 54985 transitions. [2020-12-22 09:14:38,479 INFO L78 Accepts]: Start accepts. Automaton has 33028 states and 54985 transitions. Word has length 391 [2020-12-22 09:14:38,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:38,479 INFO L481 AbstractCegarLoop]: Abstraction has 33028 states and 54985 transitions. [2020-12-22 09:14:38,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:38,480 INFO L276 IsEmpty]: Start isEmpty. Operand 33028 states and 54985 transitions. [2020-12-22 09:14:38,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-12-22 09:14:38,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:38,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:38,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:14:38,490 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:38,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:38,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2137295851, now seen corresponding path program 1 times [2020-12-22 09:14:38,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:38,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135781906] [2020-12-22 09:14:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:38,917 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 09:14:38,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135781906] [2020-12-22 09:14:38,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:38,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:38,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939603304] [2020-12-22 09:14:38,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:38,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:38,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:38,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:38,920 INFO L87 Difference]: Start difference. First operand 33028 states and 54985 transitions. Second operand 3 states. [2020-12-22 09:14:41,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:41,488 INFO L93 Difference]: Finished difference Result 64985 states and 108214 transitions. [2020-12-22 09:14:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:41,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 391 [2020-12-22 09:14:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:41,530 INFO L225 Difference]: With dead ends: 64985 [2020-12-22 09:14:41,531 INFO L226 Difference]: Without dead ends: 32965 [2020-12-22 09:14:41,551 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 09:14:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32965 states. [2020-12-22 09:14:43,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32965 to 32707. [2020-12-22 09:14:43,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32707 states. [2020-12-22 09:14:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32707 states to 32707 states and 54469 transitions. [2020-12-22 09:14:43,702 INFO L78 Accepts]: Start accepts. Automaton has 32707 states and 54469 transitions. Word has length 391 [2020-12-22 09:14:43,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:43,702 INFO L481 AbstractCegarLoop]: Abstraction has 32707 states and 54469 transitions. [2020-12-22 09:14:43,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:43,702 INFO L276 IsEmpty]: Start isEmpty. Operand 32707 states and 54469 transitions. [2020-12-22 09:14:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-12-22 09:14:43,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:43,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:43,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:14:43,711 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:43,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:43,712 INFO L82 PathProgramCache]: Analyzing trace with hash -733827217, now seen corresponding path program 1 times [2020-12-22 09:14:43,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:43,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825363021] [2020-12-22 09:14:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:44,133 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 09:14:44,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825363021] [2020-12-22 09:14:44,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:44,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:44,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927172775] [2020-12-22 09:14:44,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:44,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:44,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:44,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:44,138 INFO L87 Difference]: Start difference. First operand 32707 states and 54469 transitions. Second operand 3 states. [2020-12-22 09:14:45,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:45,438 INFO L93 Difference]: Finished difference Result 32711 states and 54471 transitions. [2020-12-22 09:14:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:45,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 391 [2020-12-22 09:14:45,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:45,460 INFO L225 Difference]: With dead ends: 32711 [2020-12-22 09:14:45,460 INFO L226 Difference]: Without dead ends: 17175 [2020-12-22 09:14:45,473 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 09:14:45,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17175 states. [2020-12-22 09:14:46,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17175 to 17173. [2020-12-22 09:14:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17173 states. [2020-12-22 09:14:46,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17173 states to 17173 states and 28557 transitions. [2020-12-22 09:14:46,542 INFO L78 Accepts]: Start accepts. Automaton has 17173 states and 28557 transitions. Word has length 391 [2020-12-22 09:14:46,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:46,543 INFO L481 AbstractCegarLoop]: Abstraction has 17173 states and 28557 transitions. [2020-12-22 09:14:46,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:46,543 INFO L276 IsEmpty]: Start isEmpty. Operand 17173 states and 28557 transitions. [2020-12-22 09:14:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-12-22 09:14:46,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:46,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:46,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:14:46,552 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:46,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:46,552 INFO L82 PathProgramCache]: Analyzing trace with hash -282801718, now seen corresponding path program 1 times [2020-12-22 09:14:46,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:46,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513412963] [2020-12-22 09:14:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:47,121 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 09:14:47,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513412963] [2020-12-22 09:14:47,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:47,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:14:47,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222316344] [2020-12-22 09:14:47,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:14:47,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:47,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:14:47,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:14:47,124 INFO L87 Difference]: Start difference. First operand 17173 states and 28557 transitions. Second operand 7 states. [2020-12-22 09:14:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:49,415 INFO L93 Difference]: Finished difference Result 28700 states and 47788 transitions. [2020-12-22 09:14:49,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:14:49,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-12-22 09:14:49,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:49,463 INFO L225 Difference]: With dead ends: 28700 [2020-12-22 09:14:49,463 INFO L226 Difference]: Without dead ends: 26810 [2020-12-22 09:14:49,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:14:49,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26810 states. [2020-12-22 09:14:50,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26810 to 19202. [2020-12-22 09:14:50,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19202 states. [2020-12-22 09:14:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19202 states to 19202 states and 31933 transitions. [2020-12-22 09:14:51,032 INFO L78 Accepts]: Start accepts. Automaton has 19202 states and 31933 transitions. Word has length 394 [2020-12-22 09:14:51,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:51,033 INFO L481 AbstractCegarLoop]: Abstraction has 19202 states and 31933 transitions. [2020-12-22 09:14:51,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:14:51,033 INFO L276 IsEmpty]: Start isEmpty. Operand 19202 states and 31933 transitions. [2020-12-22 09:14:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-12-22 09:14:51,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:51,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:51,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:14:51,041 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:51,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:51,042 INFO L82 PathProgramCache]: Analyzing trace with hash -2087897608, now seen corresponding path program 1 times [2020-12-22 09:14:51,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:51,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340602580] [2020-12-22 09:14:51,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:51,490 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 09:14:51,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340602580] [2020-12-22 09:14:51,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:51,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:51,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060781651] [2020-12-22 09:14:51,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:51,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:51,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:51,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:51,493 INFO L87 Difference]: Start difference. First operand 19202 states and 31933 transitions. Second operand 3 states. [2020-12-22 09:14:54,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:54,127 INFO L93 Difference]: Finished difference Result 41212 states and 68514 transitions. [2020-12-22 09:14:54,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:54,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 395 [2020-12-22 09:14:54,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:54,185 INFO L225 Difference]: With dead ends: 41212 [2020-12-22 09:14:54,185 INFO L226 Difference]: Without dead ends: 31326 [2020-12-22 09:14:54,200 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 09:14:54,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31326 states. [2020-12-22 09:14:56,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31326 to 31312. [2020-12-22 09:14:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31312 states. [2020-12-22 09:14:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31312 states to 31312 states and 52020 transitions. [2020-12-22 09:14:56,607 INFO L78 Accepts]: Start accepts. Automaton has 31312 states and 52020 transitions. Word has length 395 [2020-12-22 09:14:56,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:56,607 INFO L481 AbstractCegarLoop]: Abstraction has 31312 states and 52020 transitions. [2020-12-22 09:14:56,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand 31312 states and 52020 transitions. [2020-12-22 09:14:56,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-12-22 09:14:56,615 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:56,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:56,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:14:56,616 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:56,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:56,617 INFO L82 PathProgramCache]: Analyzing trace with hash -860742711, now seen corresponding path program 1 times [2020-12-22 09:14:56,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:56,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257544693] [2020-12-22 09:14:56,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:57,047 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 09:14:57,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257544693] [2020-12-22 09:14:57,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:57,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:14:57,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326669175] [2020-12-22 09:14:57,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:14:57,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:57,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:14:57,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:14:57,050 INFO L87 Difference]: Start difference. First operand 31312 states and 52020 transitions. Second operand 4 states. [2020-12-22 09:14:59,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:59,928 INFO L93 Difference]: Finished difference Result 46446 states and 77247 transitions. [2020-12-22 09:14:59,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:14:59,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 395 [2020-12-22 09:14:59,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:59,974 INFO L225 Difference]: With dead ends: 46446 [2020-12-22 09:14:59,974 INFO L226 Difference]: Without dead ends: 38892 [2020-12-22 09:14:59,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:15:00,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38892 states. [2020-12-22 09:15:02,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38892 to 35062. [2020-12-22 09:15:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35062 states. [2020-12-22 09:15:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35062 states to 35062 states and 58243 transitions. [2020-12-22 09:15:02,743 INFO L78 Accepts]: Start accepts. Automaton has 35062 states and 58243 transitions. Word has length 395 [2020-12-22 09:15:02,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:02,744 INFO L481 AbstractCegarLoop]: Abstraction has 35062 states and 58243 transitions. [2020-12-22 09:15:02,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:15:02,744 INFO L276 IsEmpty]: Start isEmpty. Operand 35062 states and 58243 transitions. [2020-12-22 09:15:02,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-12-22 09:15:02,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:02,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:15:02,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 09:15:02,752 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:02,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:02,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1824342981, now seen corresponding path program 1 times [2020-12-22 09:15:02,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:02,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914999897] [2020-12-22 09:15:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:03,182 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 09:15:03,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914999897] [2020-12-22 09:15:03,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:03,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:15:03,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082071564] [2020-12-22 09:15:03,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:15:03,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:03,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:15:03,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:15:03,187 INFO L87 Difference]: Start difference. First operand 35062 states and 58243 transitions. Second operand 3 states. [2020-12-22 09:15:08,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:08,829 INFO L93 Difference]: Finished difference Result 104244 states and 173147 transitions. [2020-12-22 09:15:08,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:15:08,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 396 [2020-12-22 09:15:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:08,918 INFO L225 Difference]: With dead ends: 104244 [2020-12-22 09:15:08,918 INFO L226 Difference]: Without dead ends: 69287 [2020-12-22 09:15:08,946 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 09:15:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69287 states. [2020-12-22 09:15:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69287 to 69285. [2020-12-22 09:15:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69285 states. [2020-12-22 09:15:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69285 states to 69285 states and 114881 transitions. [2020-12-22 09:15:14,548 INFO L78 Accepts]: Start accepts. Automaton has 69285 states and 114881 transitions. Word has length 396 [2020-12-22 09:15:14,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:14,549 INFO L481 AbstractCegarLoop]: Abstraction has 69285 states and 114881 transitions. [2020-12-22 09:15:14,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:15:14,549 INFO L276 IsEmpty]: Start isEmpty. Operand 69285 states and 114881 transitions. [2020-12-22 09:15:14,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-12-22 09:15:14,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:14,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:15:14,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 09:15:14,562 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:14,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1173887217, now seen corresponding path program 1 times [2020-12-22 09:15:14,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:14,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779695375] [2020-12-22 09:15:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:14,837 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 09:15:14,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779695375] [2020-12-22 09:15:14,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:14,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:15:14,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494801638] [2020-12-22 09:15:14,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:15:14,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:14,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:15:14,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:15:14,843 INFO L87 Difference]: Start difference. First operand 69285 states and 114881 transitions. Second operand 3 states. [2020-12-22 09:15:25,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:25,970 INFO L93 Difference]: Finished difference Result 206142 states and 341798 transitions. [2020-12-22 09:15:25,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:15:25,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 396 [2020-12-22 09:15:25,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:26,225 INFO L225 Difference]: With dead ends: 206142 [2020-12-22 09:15:26,225 INFO L226 Difference]: Without dead ends: 136998 [2020-12-22 09:15:26,492 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 09:15:26,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136998 states. [2020-12-22 09:15:37,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136998 to 136996. [2020-12-22 09:15:37,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136996 states. [2020-12-22 09:15:38,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136996 states to 136996 states and 226742 transitions. [2020-12-22 09:15:38,044 INFO L78 Accepts]: Start accepts. Automaton has 136996 states and 226742 transitions. Word has length 396 [2020-12-22 09:15:38,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:38,045 INFO L481 AbstractCegarLoop]: Abstraction has 136996 states and 226742 transitions. [2020-12-22 09:15:38,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:15:38,045 INFO L276 IsEmpty]: Start isEmpty. Operand 136996 states and 226742 transitions. [2020-12-22 09:15:38,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-12-22 09:15:38,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:38,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:15:38,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 09:15:38,068 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:38,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:38,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1903597191, now seen corresponding path program 1 times [2020-12-22 09:15:38,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:38,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914371846] [2020-12-22 09:15:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:38,742 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 09:15:38,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914371846] [2020-12-22 09:15:38,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:38,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:15:38,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915376423] [2020-12-22 09:15:38,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:15:38,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:38,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:15:38,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:15:38,745 INFO L87 Difference]: Start difference. First operand 136996 states and 226742 transitions. Second operand 3 states. [2020-12-22 09:16:00,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:16:00,980 INFO L93 Difference]: Finished difference Result 406358 states and 672658 transitions. [2020-12-22 09:16:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:16:00,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 396 [2020-12-22 09:16:00,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:16:01,491 INFO L225 Difference]: With dead ends: 406358 [2020-12-22 09:16:01,491 INFO L226 Difference]: Without dead ends: 269479 [2020-12-22 09:16:01,631 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 09:16:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269479 states.