/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+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:13:42,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:13:42,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:13:42,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:13:42,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:13:42,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:13:42,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:13:42,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:13:42,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:13:42,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:13:42,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:13:42,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:13:42,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:13:42,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:13:42,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:13:42,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:13:42,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:13:42,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:13:42,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:13:42,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:13:42,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:13:42,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:13:42,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:13:42,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:13:42,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:13:42,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:13:42,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:13:42,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:13:42,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:13:42,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:13:42,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:13:42,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:13:42,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:13:42,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:13:42,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:13:42,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:13:42,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:13:42,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:13:42,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:13:42,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:13:42,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:13:42,482 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:13:42,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:13:42,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:13:42,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:13:42,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:13:42,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:13:42,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:13:42,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:13:42,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:13:42,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:13:42,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:13:42,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:13:42,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:13:42,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:13:42,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:13:42,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:13:42,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:13:42,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:13:42,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:13:42,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:13:42,488 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:13:42,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:13:42,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:13:42,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:13:42,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:13:42,963 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:13:42,964 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:13:42,965 INFO L432 ainManager$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+lhb-reducer.c [2020-12-22 09:13:43,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b13acf734/76d9ae6702424280bb7ba8621ecb1b42/FLAG190b581b7 [2020-12-22 09:13:44,195 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:13:44,196 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+lhb-reducer.c [2020-12-22 09:13:44,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b13acf734/76d9ae6702424280bb7ba8621ecb1b42/FLAG190b581b7 [2020-12-22 09:13:44,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b13acf734/76d9ae6702424280bb7ba8621ecb1b42 [2020-12-22 09:13:44,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:13:44,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:13:44,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:13:44,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:13:44,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:13:44,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:13:44" (1/1) ... [2020-12-22 09:13:44,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6643ced7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:44, skipping insertion in model container [2020-12-22 09:13:44,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:13:44" (1/1) ... [2020-12-22 09:13:44,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:13:45,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:13:46,140 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+lhb-reducer.c[40288,40301] [2020-12-22 09:13:49,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:13:49,693 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:13:50,161 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+lhb-reducer.c[40288,40301] [2020-12-22 09:13:53,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:13:53,204 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:13:53,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:53 WrapperNode [2020-12-22 09:13:53,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:13:53,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:13:53,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:13:53,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:13:53,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:53" (1/1) ... [2020-12-22 09:13:53,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:53" (1/1) ... [2020-12-22 09:13:53,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:13:53,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:13:53,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:13:53,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:13:53,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:53" (1/1) ... [2020-12-22 09:13:53,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:53" (1/1) ... [2020-12-22 09:13:53,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:53" (1/1) ... [2020-12-22 09:13:53,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:53" (1/1) ... [2020-12-22 09:13:53,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:53" (1/1) ... [2020-12-22 09:13:54,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:53" (1/1) ... [2020-12-22 09:13:54,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:53" (1/1) ... [2020-12-22 09:13:54,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:13:54,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:13:54,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:13:54,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:13:54,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:53" (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 09:13:54,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:13:54,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:13:54,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:13:54,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:14:17,399 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:14:17,400 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:14:17,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:14:17 BoogieIcfgContainer [2020-12-22 09:14:17,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:14:17,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:14:17,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:14:17,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:14:17,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:13:44" (1/3) ... [2020-12-22 09:14:17,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b04b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:14:17, skipping insertion in model container [2020-12-22 09:14:17,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:53" (2/3) ... [2020-12-22 09:14:17,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b04b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:14:17, skipping insertion in model container [2020-12-22 09:14:17,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:14:17" (3/3) ... [2020-12-22 09:14:17,419 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-12-22 09:14:17,426 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:14:17,436 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:14:17,457 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:14:17,506 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:14:17,506 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:14:17,506 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:14:17,506 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:14:17,507 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:14:17,507 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:14:17,507 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:14:17,507 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:14:17,611 INFO L276 IsEmpty]: Start isEmpty. Operand 6864 states. [2020-12-22 09:14:17,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-12-22 09:14:17,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:17,674 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] [2020-12-22 09:14:17,674 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:17,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:17,681 INFO L82 PathProgramCache]: Analyzing trace with hash 487487103, now seen corresponding path program 1 times [2020-12-22 09:14:17,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:17,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272670343] [2020-12-22 09:14:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:18,783 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 09:14:18,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272670343] [2020-12-22 09:14:18,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:18,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:18,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793893309] [2020-12-22 09:14:18,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:18,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:18,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:18,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:18,814 INFO L87 Difference]: Start difference. First operand 6864 states. Second operand 3 states. [2020-12-22 09:14:19,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:19,414 INFO L93 Difference]: Finished difference Result 13714 states and 23778 transitions. [2020-12-22 09:14:19,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:19,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 383 [2020-12-22 09:14:19,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:19,500 INFO L225 Difference]: With dead ends: 13714 [2020-12-22 09:14:19,500 INFO L226 Difference]: Without dead ends: 8183 [2020-12-22 09:14:19,524 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 09:14:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8183 states. [2020-12-22 09:14:19,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8183 to 8181. [2020-12-22 09:14:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8181 states. [2020-12-22 09:14:20,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8181 states to 8181 states and 13707 transitions. [2020-12-22 09:14:20,003 INFO L78 Accepts]: Start accepts. Automaton has 8181 states and 13707 transitions. Word has length 383 [2020-12-22 09:14:20,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:20,007 INFO L481 AbstractCegarLoop]: Abstraction has 8181 states and 13707 transitions. [2020-12-22 09:14:20,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand 8181 states and 13707 transitions. [2020-12-22 09:14:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-12-22 09:14:20,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:20,038 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] [2020-12-22 09:14:20,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:14:20,040 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:20,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:20,042 INFO L82 PathProgramCache]: Analyzing trace with hash 499075632, now seen corresponding path program 1 times [2020-12-22 09:14:20,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:20,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628737262] [2020-12-22 09:14:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:20,706 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 09:14:20,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628737262] [2020-12-22 09:14:20,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:20,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:20,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021679721] [2020-12-22 09:14:20,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:20,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:20,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:20,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:20,713 INFO L87 Difference]: Start difference. First operand 8181 states and 13707 transitions. Second operand 3 states. [2020-12-22 09:14:21,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:21,375 INFO L93 Difference]: Finished difference Result 18014 states and 30281 transitions. [2020-12-22 09:14:21,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:21,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 383 [2020-12-22 09:14:21,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:21,443 INFO L225 Difference]: With dead ends: 18014 [2020-12-22 09:14:21,444 INFO L226 Difference]: Without dead ends: 10799 [2020-12-22 09:14:21,461 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 09:14:21,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10799 states. [2020-12-22 09:14:22,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10799 to 10797. [2020-12-22 09:14:22,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10797 states. [2020-12-22 09:14:22,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10797 states to 10797 states and 18158 transitions. [2020-12-22 09:14:22,060 INFO L78 Accepts]: Start accepts. Automaton has 10797 states and 18158 transitions. Word has length 383 [2020-12-22 09:14:22,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:22,063 INFO L481 AbstractCegarLoop]: Abstraction has 10797 states and 18158 transitions. [2020-12-22 09:14:22,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:22,063 INFO L276 IsEmpty]: Start isEmpty. Operand 10797 states and 18158 transitions. [2020-12-22 09:14:22,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-12-22 09:14:22,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:22,110 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] [2020-12-22 09:14:22,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:14:22,110 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:22,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:22,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1944929073, now seen corresponding path program 1 times [2020-12-22 09:14:22,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:22,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349552086] [2020-12-22 09:14:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:23,019 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 09:14:23,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349552086] [2020-12-22 09:14:23,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:23,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:23,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020746406] [2020-12-22 09:14:23,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:23,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:23,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:23,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:23,035 INFO L87 Difference]: Start difference. First operand 10797 states and 18158 transitions. Second operand 3 states. [2020-12-22 09:14:24,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:24,449 INFO L93 Difference]: Finished difference Result 24840 states and 41742 transitions. [2020-12-22 09:14:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:24,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 383 [2020-12-22 09:14:24,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:24,518 INFO L225 Difference]: With dead ends: 24840 [2020-12-22 09:14:24,518 INFO L226 Difference]: Without dead ends: 14863 [2020-12-22 09:14:24,541 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 09:14:24,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14863 states. [2020-12-22 09:14:25,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14863 to 14861. [2020-12-22 09:14:25,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14861 states. [2020-12-22 09:14:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14861 states to 14861 states and 24906 transitions. [2020-12-22 09:14:25,374 INFO L78 Accepts]: Start accepts. Automaton has 14861 states and 24906 transitions. Word has length 383 [2020-12-22 09:14:25,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:25,381 INFO L481 AbstractCegarLoop]: Abstraction has 14861 states and 24906 transitions. [2020-12-22 09:14:25,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:25,382 INFO L276 IsEmpty]: Start isEmpty. Operand 14861 states and 24906 transitions. [2020-12-22 09:14:25,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-12-22 09:14:25,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:25,423 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] [2020-12-22 09:14:25,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:14:25,424 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:25,427 INFO L82 PathProgramCache]: Analyzing trace with hash 553972174, now seen corresponding path program 1 times [2020-12-22 09:14:25,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:25,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634105247] [2020-12-22 09:14:25,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:25,890 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 09:14:25,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634105247] [2020-12-22 09:14:25,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:25,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:25,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142372341] [2020-12-22 09:14:25,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:25,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:25,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:25,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:25,894 INFO L87 Difference]: Start difference. First operand 14861 states and 24906 transitions. Second operand 3 states. [2020-12-22 09:14:27,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:27,737 INFO L93 Difference]: Finished difference Result 34948 states and 58450 transitions. [2020-12-22 09:14:27,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:27,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 383 [2020-12-22 09:14:27,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:27,794 INFO L225 Difference]: With dead ends: 34948 [2020-12-22 09:14:27,794 INFO L226 Difference]: Without dead ends: 20861 [2020-12-22 09:14:27,817 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 09:14:27,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20861 states. [2020-12-22 09:14:28,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20861 to 20859. [2020-12-22 09:14:28,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20859 states. [2020-12-22 09:14:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20859 states to 20859 states and 34666 transitions. [2020-12-22 09:14:28,907 INFO L78 Accepts]: Start accepts. Automaton has 20859 states and 34666 transitions. Word has length 383 [2020-12-22 09:14:28,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:28,908 INFO L481 AbstractCegarLoop]: Abstraction has 20859 states and 34666 transitions. [2020-12-22 09:14:28,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand 20859 states and 34666 transitions. [2020-12-22 09:14:28,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-12-22 09:14:28,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:28,959 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] [2020-12-22 09:14:28,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:14:28,959 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:28,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:28,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1429167256, now seen corresponding path program 1 times [2020-12-22 09:14:28,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:28,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200565384] [2020-12-22 09:14:28,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:29,569 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 09:14:29,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200565384] [2020-12-22 09:14:29,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:29,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:29,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531763764] [2020-12-22 09:14:29,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:29,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:29,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:29,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:29,572 INFO L87 Difference]: Start difference. First operand 20859 states and 34666 transitions. Second operand 3 states. [2020-12-22 09:14:30,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:30,608 INFO L93 Difference]: Finished difference Result 33295 states and 55456 transitions. [2020-12-22 09:14:30,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:30,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 383 [2020-12-22 09:14:30,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:30,671 INFO L225 Difference]: With dead ends: 33295 [2020-12-22 09:14:30,671 INFO L226 Difference]: Without dead ends: 27181 [2020-12-22 09:14:30,685 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 09:14:30,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27181 states. [2020-12-22 09:14:31,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27181 to 27179. [2020-12-22 09:14:31,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27179 states. [2020-12-22 09:14:31,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27179 states to 27179 states and 45074 transitions. [2020-12-22 09:14:31,888 INFO L78 Accepts]: Start accepts. Automaton has 27179 states and 45074 transitions. Word has length 383 [2020-12-22 09:14:31,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:31,889 INFO L481 AbstractCegarLoop]: Abstraction has 27179 states and 45074 transitions. [2020-12-22 09:14:31,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:31,889 INFO L276 IsEmpty]: Start isEmpty. Operand 27179 states and 45074 transitions. [2020-12-22 09:14:31,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-12-22 09:14:31,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:31,946 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] [2020-12-22 09:14:31,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:14:31,946 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:31,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:31,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1075378917, now seen corresponding path program 1 times [2020-12-22 09:14:31,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:31,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773045040] [2020-12-22 09:14:31,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:32,485 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 09:14:32,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773045040] [2020-12-22 09:14:32,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:32,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:32,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071131101] [2020-12-22 09:14:32,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:32,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:32,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:32,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:32,488 INFO L87 Difference]: Start difference. First operand 27179 states and 45074 transitions. Second operand 3 states. [2020-12-22 09:14:34,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:34,339 INFO L93 Difference]: Finished difference Result 52133 states and 86492 transitions. [2020-12-22 09:14:34,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:34,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 383 [2020-12-22 09:14:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:34,445 INFO L225 Difference]: With dead ends: 52133 [2020-12-22 09:14:34,445 INFO L226 Difference]: Without dead ends: 44561 [2020-12-22 09:14:34,472 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 09:14:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44561 states. [2020-12-22 09:14:36,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44561 to 44559. [2020-12-22 09:14:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44559 states. [2020-12-22 09:14:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44559 states to 44559 states and 73758 transitions. [2020-12-22 09:14:36,245 INFO L78 Accepts]: Start accepts. Automaton has 44559 states and 73758 transitions. Word has length 383 [2020-12-22 09:14:36,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:36,246 INFO L481 AbstractCegarLoop]: Abstraction has 44559 states and 73758 transitions. [2020-12-22 09:14:36,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:36,246 INFO L276 IsEmpty]: Start isEmpty. Operand 44559 states and 73758 transitions. [2020-12-22 09:14:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-12-22 09:14:36,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:36,300 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] [2020-12-22 09:14:36,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:14:36,300 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:36,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:36,301 INFO L82 PathProgramCache]: Analyzing trace with hash 663767845, now seen corresponding path program 1 times [2020-12-22 09:14:36,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:36,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115971538] [2020-12-22 09:14:36,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:36,957 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 09:14:36,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115971538] [2020-12-22 09:14:36,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:36,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:36,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297536810] [2020-12-22 09:14:36,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:36,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:36,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:36,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:36,962 INFO L87 Difference]: Start difference. First operand 44559 states and 73758 transitions. Second operand 3 states. [2020-12-22 09:14:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:41,909 INFO L93 Difference]: Finished difference Result 89231 states and 147832 transitions. [2020-12-22 09:14:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:41,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 383 [2020-12-22 09:14:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:42,058 INFO L225 Difference]: With dead ends: 89231 [2020-12-22 09:14:42,058 INFO L226 Difference]: Without dead ends: 78989 [2020-12-22 09:14:42,096 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 09:14:42,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78989 states. [2020-12-22 09:14:44,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78989 to 78987. [2020-12-22 09:14:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78987 states. [2020-12-22 09:14:45,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78987 states to 78987 states and 130448 transitions. [2020-12-22 09:14:45,202 INFO L78 Accepts]: Start accepts. Automaton has 78987 states and 130448 transitions. Word has length 383 [2020-12-22 09:14:45,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:45,203 INFO L481 AbstractCegarLoop]: Abstraction has 78987 states and 130448 transitions. [2020-12-22 09:14:45,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:45,203 INFO L276 IsEmpty]: Start isEmpty. Operand 78987 states and 130448 transitions. [2020-12-22 09:14:45,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-12-22 09:14:45,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:45,307 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] [2020-12-22 09:14:45,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:14:45,307 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:45,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:45,308 INFO L82 PathProgramCache]: Analyzing trace with hash 932776037, now seen corresponding path program 1 times [2020-12-22 09:14:45,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:45,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119351968] [2020-12-22 09:14:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:45,905 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 09:14:45,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119351968] [2020-12-22 09:14:45,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:45,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:45,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817151575] [2020-12-22 09:14:45,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:45,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:45,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:45,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:45,909 INFO L87 Difference]: Start difference. First operand 78987 states and 130448 transitions. Second operand 3 states. [2020-12-22 09:14:49,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:49,059 INFO L93 Difference]: Finished difference Result 99771 states and 164790 transitions. [2020-12-22 09:14:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:49,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 383 [2020-12-22 09:14:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:49,170 INFO L225 Difference]: With dead ends: 99771 [2020-12-22 09:14:49,171 INFO L226 Difference]: Without dead ends: 85785 [2020-12-22 09:14:49,201 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 09:14:49,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85785 states. [2020-12-22 09:14:52,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85785 to 85307. [2020-12-22 09:14:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85307 states. [2020-12-22 09:14:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85307 states to 85307 states and 140824 transitions. [2020-12-22 09:14:52,169 INFO L78 Accepts]: Start accepts. Automaton has 85307 states and 140824 transitions. Word has length 383 [2020-12-22 09:14:52,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:52,170 INFO L481 AbstractCegarLoop]: Abstraction has 85307 states and 140824 transitions. [2020-12-22 09:14:52,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:52,170 INFO L276 IsEmpty]: Start isEmpty. Operand 85307 states and 140824 transitions. [2020-12-22 09:14:52,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-12-22 09:14:52,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:52,438 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] [2020-12-22 09:14:52,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:14:52,439 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:52,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:52,439 INFO L82 PathProgramCache]: Analyzing trace with hash 718227568, now seen corresponding path program 1 times [2020-12-22 09:14:52,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:52,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601837469] [2020-12-22 09:14:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:53,423 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 09:14:53,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601837469] [2020-12-22 09:14:53,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:53,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:53,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376956823] [2020-12-22 09:14:53,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:53,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:53,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:53,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:53,427 INFO L87 Difference]: Start difference. First operand 85307 states and 140824 transitions. Second operand 3 states. [2020-12-22 09:14:55,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:55,138 INFO L93 Difference]: Finished difference Result 128327 states and 212930 transitions. [2020-12-22 09:14:55,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:55,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 383 [2020-12-22 09:14:55,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:55,193 INFO L225 Difference]: With dead ends: 128327 [2020-12-22 09:14:55,194 INFO L226 Difference]: Without dead ends: 48331 [2020-12-22 09:14:55,244 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 09:14:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48331 states. [2020-12-22 09:14:56,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48331 to 48329. [2020-12-22 09:14:56,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48329 states. [2020-12-22 09:14:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48329 states to 48329 states and 80287 transitions. [2020-12-22 09:14:56,989 INFO L78 Accepts]: Start accepts. Automaton has 48329 states and 80287 transitions. Word has length 383 [2020-12-22 09:14:56,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:56,990 INFO L481 AbstractCegarLoop]: Abstraction has 48329 states and 80287 transitions. [2020-12-22 09:14:56,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 48329 states and 80287 transitions. [2020-12-22 09:14:57,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-12-22 09:14:57,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:57,031 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 09:14:57,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:14:57,031 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:57,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:57,032 INFO L82 PathProgramCache]: Analyzing trace with hash 23282363, now seen corresponding path program 1 times [2020-12-22 09:14:57,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:57,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836489044] [2020-12-22 09:14:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:57,779 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 09:14:57,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836489044] [2020-12-22 09:14:57,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:57,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:57,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326700753] [2020-12-22 09:14:57,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:57,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:57,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:57,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:57,782 INFO L87 Difference]: Start difference. First operand 48329 states and 80287 transitions. Second operand 3 states. [2020-12-22 09:14:59,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:59,151 INFO L93 Difference]: Finished difference Result 74453 states and 123953 transitions. [2020-12-22 09:14:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:59,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 388 [2020-12-22 09:14:59,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:59,195 INFO L225 Difference]: With dead ends: 74453 [2020-12-22 09:14:59,196 INFO L226 Difference]: Without dead ends: 28847 [2020-12-22 09:14:59,229 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 09:14:59,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28847 states. [2020-12-22 09:15:00,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28847 to 28845. [2020-12-22 09:15:00,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28845 states. [2020-12-22 09:15:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28845 states to 28845 states and 47925 transitions. [2020-12-22 09:15:00,227 INFO L78 Accepts]: Start accepts. Automaton has 28845 states and 47925 transitions. Word has length 388 [2020-12-22 09:15:00,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:00,227 INFO L481 AbstractCegarLoop]: Abstraction has 28845 states and 47925 transitions. [2020-12-22 09:15:00,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:15:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 28845 states and 47925 transitions. [2020-12-22 09:15:00,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-12-22 09:15:00,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:00,251 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 09:15:00,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:15:00,251 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:00,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:00,252 INFO L82 PathProgramCache]: Analyzing trace with hash 940470588, now seen corresponding path program 1 times [2020-12-22 09:15:00,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:00,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853696873] [2020-12-22 09:15:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:00,882 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 09:15:00,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853696873] [2020-12-22 09:15:00,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:00,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:15:00,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191450553] [2020-12-22 09:15:00,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:15:00,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:00,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:15:00,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:15:00,886 INFO L87 Difference]: Start difference. First operand 28845 states and 47925 transitions. Second operand 3 states. [2020-12-22 09:15:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:02,039 INFO L93 Difference]: Finished difference Result 40329 states and 67537 transitions. [2020-12-22 09:15:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:15:02,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 388 [2020-12-22 09:15:02,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:02,055 INFO L225 Difference]: With dead ends: 40329 [2020-12-22 09:15:02,055 INFO L226 Difference]: Without dead ends: 13347 [2020-12-22 09:15:02,071 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 09:15:02,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13347 states. [2020-12-22 09:15:02,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13347 to 12457. [2020-12-22 09:15:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12457 states. [2020-12-22 09:15:02,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12457 states to 12457 states and 20919 transitions. [2020-12-22 09:15:02,537 INFO L78 Accepts]: Start accepts. Automaton has 12457 states and 20919 transitions. Word has length 388 [2020-12-22 09:15:02,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:02,538 INFO L481 AbstractCegarLoop]: Abstraction has 12457 states and 20919 transitions. [2020-12-22 09:15:02,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:15:02,538 INFO L276 IsEmpty]: Start isEmpty. Operand 12457 states and 20919 transitions. [2020-12-22 09:15:02,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-12-22 09:15:02,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:02,548 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] [2020-12-22 09:15:02,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:15:02,548 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:02,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:02,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1446426165, now seen corresponding path program 1 times [2020-12-22 09:15:02,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:02,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545447248] [2020-12-22 09:15:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:03,308 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 09:15:03,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545447248] [2020-12-22 09:15:03,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:03,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:15:03,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286902170] [2020-12-22 09:15:03,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:15:03,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:03,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:15:03,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:15:03,312 INFO L87 Difference]: Start difference. First operand 12457 states and 20919 transitions. Second operand 7 states. [2020-12-22 09:15:05,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:05,901 INFO L93 Difference]: Finished difference Result 33299 states and 55752 transitions. [2020-12-22 09:15:05,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:15:05,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-12-22 09:15:05,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:05,937 INFO L225 Difference]: With dead ends: 33299 [2020-12-22 09:15:05,937 INFO L226 Difference]: Without dead ends: 30969 [2020-12-22 09:15:05,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 09:15:05,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30969 states. [2020-12-22 09:15:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30969 to 14788. [2020-12-22 09:15:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14788 states. [2020-12-22 09:15:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14788 states to 14788 states and 24754 transitions. [2020-12-22 09:15:06,680 INFO L78 Accepts]: Start accepts. Automaton has 14788 states and 24754 transitions. Word has length 392 [2020-12-22 09:15:06,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:06,681 INFO L481 AbstractCegarLoop]: Abstraction has 14788 states and 24754 transitions. [2020-12-22 09:15:06,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:15:06,681 INFO L276 IsEmpty]: Start isEmpty. Operand 14788 states and 24754 transitions. [2020-12-22 09:15:06,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-12-22 09:15:06,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:06,692 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] [2020-12-22 09:15:06,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:15:06,693 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:06,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:06,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1840785352, now seen corresponding path program 1 times [2020-12-22 09:15:06,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:06,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842509858] [2020-12-22 09:15:06,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:07,262 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 09:15:07,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842509858] [2020-12-22 09:15:07,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:07,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:15:07,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216013011] [2020-12-22 09:15:07,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:15:07,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:07,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:15:07,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:15:07,265 INFO L87 Difference]: Start difference. First operand 14788 states and 24754 transitions. Second operand 7 states. [2020-12-22 09:15:09,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:09,328 INFO L93 Difference]: Finished difference Result 26389 states and 44109 transitions. [2020-12-22 09:15:09,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:15:09,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-12-22 09:15:09,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:09,356 INFO L225 Difference]: With dead ends: 26389 [2020-12-22 09:15:09,356 INFO L226 Difference]: Without dead ends: 24099 [2020-12-22 09:15:09,364 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 09:15:09,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24099 states. [2020-12-22 09:15:10,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24099 to 17083. [2020-12-22 09:15:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17083 states. [2020-12-22 09:15:10,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17083 states to 17083 states and 28585 transitions. [2020-12-22 09:15:10,202 INFO L78 Accepts]: Start accepts. Automaton has 17083 states and 28585 transitions. Word has length 392 [2020-12-22 09:15:10,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:10,203 INFO L481 AbstractCegarLoop]: Abstraction has 17083 states and 28585 transitions. [2020-12-22 09:15:10,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:15:10,203 INFO L276 IsEmpty]: Start isEmpty. Operand 17083 states and 28585 transitions. [2020-12-22 09:15:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-12-22 09:15:10,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:10,219 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] [2020-12-22 09:15:10,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:15:10,219 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:10,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:10,220 INFO L82 PathProgramCache]: Analyzing trace with hash -113442001, now seen corresponding path program 1 times [2020-12-22 09:15:10,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:10,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123834571] [2020-12-22 09:15:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:15:10,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123834571] [2020-12-22 09:15:10,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:10,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:15:10,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480641195] [2020-12-22 09:15:10,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:15:10,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:10,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:15:10,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:15:10,903 INFO L87 Difference]: Start difference. First operand 17083 states and 28585 transitions. Second operand 7 states. [2020-12-22 09:15:13,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:13,488 INFO L93 Difference]: Finished difference Result 28673 states and 47929 transitions. [2020-12-22 09:15:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:15:13,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-12-22 09:15:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:13,517 INFO L225 Difference]: With dead ends: 28673 [2020-12-22 09:15:13,517 INFO L226 Difference]: Without dead ends: 26383 [2020-12-22 09:15:13,524 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 09:15:13,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26383 states. [2020-12-22 09:15:14,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26383 to 19392. [2020-12-22 09:15:14,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19392 states. [2020-12-22 09:15:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19392 states to 19392 states and 32430 transitions. [2020-12-22 09:15:14,629 INFO L78 Accepts]: Start accepts. Automaton has 19392 states and 32430 transitions. Word has length 392 [2020-12-22 09:15:14,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:14,630 INFO L481 AbstractCegarLoop]: Abstraction has 19392 states and 32430 transitions. [2020-12-22 09:15:14,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:15:14,630 INFO L276 IsEmpty]: Start isEmpty. Operand 19392 states and 32430 transitions. [2020-12-22 09:15:14,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-12-22 09:15:14,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:14,647 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] [2020-12-22 09:15:14,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:15:14,647 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:14,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:14,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1574096864, now seen corresponding path program 1 times [2020-12-22 09:15:14,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:14,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989463237] [2020-12-22 09:15:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:15,329 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 09:15:15,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989463237] [2020-12-22 09:15:15,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:15,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:15:15,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087237229] [2020-12-22 09:15:15,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:15:15,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:15,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:15:15,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:15:15,332 INFO L87 Difference]: Start difference. First operand 19392 states and 32430 transitions. Second operand 7 states. [2020-12-22 09:15:18,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:18,016 INFO L93 Difference]: Finished difference Result 30953 states and 51745 transitions. [2020-12-22 09:15:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:15:18,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-12-22 09:15:18,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:18,053 INFO L225 Difference]: With dead ends: 30953 [2020-12-22 09:15:18,053 INFO L226 Difference]: Without dead ends: 28663 [2020-12-22 09:15:18,064 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 09:15:18,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28663 states. [2020-12-22 09:15:19,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28663 to 21695. [2020-12-22 09:15:19,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21695 states. [2020-12-22 09:15:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21695 states to 21695 states and 36269 transitions. [2020-12-22 09:15:19,397 INFO L78 Accepts]: Start accepts. Automaton has 21695 states and 36269 transitions. Word has length 392 [2020-12-22 09:15:19,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:19,398 INFO L481 AbstractCegarLoop]: Abstraction has 21695 states and 36269 transitions. [2020-12-22 09:15:19,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:15:19,398 INFO L276 IsEmpty]: Start isEmpty. Operand 21695 states and 36269 transitions. [2020-12-22 09:15:19,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:15:19,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:19,411 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] [2020-12-22 09:15:19,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:15:19,412 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:19,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:19,412 INFO L82 PathProgramCache]: Analyzing trace with hash 394862652, now seen corresponding path program 1 times [2020-12-22 09:15:19,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:19,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574142187] [2020-12-22 09:15:19,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:19,931 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 09:15:19,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574142187] [2020-12-22 09:15:19,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:19,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:15:19,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517889006] [2020-12-22 09:15:19,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:15:19,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:19,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:15:19,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:15:19,934 INFO L87 Difference]: Start difference. First operand 21695 states and 36269 transitions. Second operand 4 states. [2020-12-22 09:15:22,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:22,230 INFO L93 Difference]: Finished difference Result 46829 states and 78312 transitions. [2020-12-22 09:15:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:15:22,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 393 [2020-12-22 09:15:22,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:22,276 INFO L225 Difference]: With dead ends: 46829 [2020-12-22 09:15:22,276 INFO L226 Difference]: Without dead ends: 35403 [2020-12-22 09:15:22,291 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 09:15:22,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35403 states. [2020-12-22 09:15:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35403 to 33071. [2020-12-22 09:15:24,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33071 states. [2020-12-22 09:15:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33071 states to 33071 states and 55197 transitions. [2020-12-22 09:15:24,630 INFO L78 Accepts]: Start accepts. Automaton has 33071 states and 55197 transitions. Word has length 393 [2020-12-22 09:15:24,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:24,630 INFO L481 AbstractCegarLoop]: Abstraction has 33071 states and 55197 transitions. [2020-12-22 09:15:24,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:15:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 33071 states and 55197 transitions. [2020-12-22 09:15:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:15:24,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:24,643 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] [2020-12-22 09:15:24,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:15:24,643 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:24,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:24,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1611885812, now seen corresponding path program 1 times [2020-12-22 09:15:24,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:24,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667084650] [2020-12-22 09:15:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:25,081 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 09:15:25,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667084650] [2020-12-22 09:15:25,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:25,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:15:25,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959374560] [2020-12-22 09:15:25,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:15:25,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:25,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:15:25,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:15:25,084 INFO L87 Difference]: Start difference. First operand 33071 states and 55197 transitions. Second operand 7 states. [2020-12-22 09:15:29,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:29,638 INFO L93 Difference]: Finished difference Result 53659 states and 89651 transitions. [2020-12-22 09:15:29,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:15:29,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-12-22 09:15:29,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:29,692 INFO L225 Difference]: With dead ends: 53659 [2020-12-22 09:15:29,692 INFO L226 Difference]: Without dead ends: 49089 [2020-12-22 09:15:29,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:15:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49089 states. [2020-12-22 09:15:32,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49089 to 37623. [2020-12-22 09:15:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37623 states. [2020-12-22 09:15:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37623 states to 37623 states and 62797 transitions. [2020-12-22 09:15:32,399 INFO L78 Accepts]: Start accepts. Automaton has 37623 states and 62797 transitions. Word has length 393 [2020-12-22 09:15:32,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:32,399 INFO L481 AbstractCegarLoop]: Abstraction has 37623 states and 62797 transitions. [2020-12-22 09:15:32,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:15:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand 37623 states and 62797 transitions. [2020-12-22 09:15:32,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:15:32,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:32,411 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] [2020-12-22 09:15:32,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:15:32,412 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:32,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:32,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1969974238, now seen corresponding path program 1 times [2020-12-22 09:15:32,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:32,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092612651] [2020-12-22 09:15:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:33,219 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 09:15:33,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092612651] [2020-12-22 09:15:33,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:33,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:15:33,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162763220] [2020-12-22 09:15:33,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:15:33,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:33,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:15:33,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:15:33,230 INFO L87 Difference]: Start difference. First operand 37623 states and 62797 transitions. Second operand 3 states. [2020-12-22 09:15:38,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:38,126 INFO L93 Difference]: Finished difference Result 104600 states and 173968 transitions. [2020-12-22 09:15:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:15:38,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 393 [2020-12-22 09:15:38,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:38,215 INFO L225 Difference]: With dead ends: 104600 [2020-12-22 09:15:38,216 INFO L226 Difference]: Without dead ends: 67840 [2020-12-22 09:15:38,250 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 09:15:38,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67840 states. [2020-12-22 09:15:43,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67840 to 61390. [2020-12-22 09:15:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61390 states. [2020-12-22 09:15:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61390 states to 61390 states and 101774 transitions. [2020-12-22 09:15:43,199 INFO L78 Accepts]: Start accepts. Automaton has 61390 states and 101774 transitions. Word has length 393 [2020-12-22 09:15:43,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:43,200 INFO L481 AbstractCegarLoop]: Abstraction has 61390 states and 101774 transitions. [2020-12-22 09:15:43,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:15:43,200 INFO L276 IsEmpty]: Start isEmpty. Operand 61390 states and 101774 transitions. [2020-12-22 09:15:43,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:15:43,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:43,362 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] [2020-12-22 09:15:43,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 09:15:43,362 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:43,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:43,363 INFO L82 PathProgramCache]: Analyzing trace with hash 127767447, now seen corresponding path program 1 times [2020-12-22 09:15:43,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:43,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020515342] [2020-12-22 09:15:43,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:44,797 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 09:15:44,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020515342] [2020-12-22 09:15:44,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:44,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 09:15:44,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293032131] [2020-12-22 09:15:44,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 09:15:44,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:44,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 09:15:44,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:15:44,800 INFO L87 Difference]: Start difference. First operand 61390 states and 101774 transitions. Second operand 8 states. [2020-12-22 09:16:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:16:12,188 INFO L93 Difference]: Finished difference Result 330090 states and 546201 transitions. [2020-12-22 09:16:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 09:16:12,189 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 393 [2020-12-22 09:16:12,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:16:12,930 INFO L225 Difference]: With dead ends: 330090 [2020-12-22 09:16:12,930 INFO L226 Difference]: Without dead ends: 281500 [2020-12-22 09:16:13,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:16:13,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281500 states. [2020-12-22 09:16:33,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281500 to 211260. [2020-12-22 09:16:33,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211260 states. [2020-12-22 09:16:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211260 states to 211260 states and 349654 transitions. [2020-12-22 09:16:34,671 INFO L78 Accepts]: Start accepts. Automaton has 211260 states and 349654 transitions. Word has length 393 [2020-12-22 09:16:34,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:16:34,671 INFO L481 AbstractCegarLoop]: Abstraction has 211260 states and 349654 transitions. [2020-12-22 09:16:34,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 09:16:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 211260 states and 349654 transitions. [2020-12-22 09:16:34,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:16:34,704 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:16:34,705 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] [2020-12-22 09:16:34,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 09:16:34,705 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:16:34,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:16:34,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1372146263, now seen corresponding path program 1 times [2020-12-22 09:16:34,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:16:34,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543470083] [2020-12-22 09:16:34,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:16:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:16:35,983 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 09:16:35,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543470083] [2020-12-22 09:16:35,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:16:35,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:16:35,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667934851] [2020-12-22 09:16:35,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:16:35,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:16:35,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:16:35,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:16:35,989 INFO L87 Difference]: Start difference. First operand 211260 states and 349654 transitions. Second operand 5 states. [2020-12-22 09:17:16,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:17:16,486 INFO L93 Difference]: Finished difference Result 524652 states and 867847 transitions. [2020-12-22 09:17:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:17:16,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 393 [2020-12-22 09:17:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:17:17,505 INFO L225 Difference]: With dead ends: 524652 [2020-12-22 09:17:17,505 INFO L226 Difference]: Without dead ends: 388740