/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:06:26,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:06:26,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:06:26,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:06:26,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:06:26,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:06:26,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:06:26,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:06:26,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:06:26,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:06:26,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:06:26,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:06:26,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:06:26,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:06:26,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:06:26,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:06:26,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:06:26,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:06:26,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:06:26,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:06:26,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:06:26,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:06:26,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:06:26,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:06:26,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:06:26,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:06:26,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:06:26,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:06:26,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:06:26,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:06:26,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:06:26,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:06:26,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:06:26,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:06:26,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:06:26,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:06:26,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:06:26,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:06:26,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:06:26,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:06:26,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:06:26,652 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:06:26,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:06:26,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:06:26,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:06:26,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:06:26,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:06:26,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:06:26,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:06:26,655 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:06:26,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:06:26,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:06:26,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:06:26,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:06:26,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:06:26,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:06:26,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:06:26,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:06:26,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:06:26,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:06:26,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:06:26,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:06:26,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:06:27,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:06:27,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:06:27,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:06:27,120 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:06:27,121 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:06:27,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:06:27,210 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d6d9a26/ecfcc19ab5864ea7a6c3e4a046ae4ec1/FLAGdbc7e5596 [2020-12-22 08:06:28,017 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:06:28,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:06:28,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d6d9a26/ecfcc19ab5864ea7a6c3e4a046ae4ec1/FLAGdbc7e5596 [2020-12-22 08:06:28,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d6d9a26/ecfcc19ab5864ea7a6c3e4a046ae4ec1 [2020-12-22 08:06:28,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:06:28,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:06:28,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:06:28,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:06:28,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:06:28,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:06:28" (1/1) ... [2020-12-22 08:06:28,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e1704a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:28, skipping insertion in model container [2020-12-22 08:06:28,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:06:28" (1/1) ... [2020-12-22 08:06:28,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:06:28,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:06:28,743 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13742,13755] [2020-12-22 08:06:28,758 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14389,14402] [2020-12-22 08:06:28,778 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15665,15678] [2020-12-22 08:06:28,794 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16641,16654] [2020-12-22 08:06:28,884 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25112,25125] [2020-12-22 08:06:29,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:06:29,030 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:06:29,162 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13742,13755] [2020-12-22 08:06:29,172 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14389,14402] [2020-12-22 08:06:29,189 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15665,15678] [2020-12-22 08:06:29,201 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16641,16654] [2020-12-22 08:06:29,291 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25112,25125] [2020-12-22 08:06:29,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:06:29,377 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:06:29,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:29 WrapperNode [2020-12-22 08:06:29,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:06:29,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:06:29,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:06:29,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:06:29,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:29" (1/1) ... [2020-12-22 08:06:29,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:29" (1/1) ... [2020-12-22 08:06:29,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:06:29,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:06:29,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:06:29,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:06:29,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:29" (1/1) ... [2020-12-22 08:06:29,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:29" (1/1) ... [2020-12-22 08:06:29,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:29" (1/1) ... [2020-12-22 08:06:29,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:29" (1/1) ... [2020-12-22 08:06:29,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:29" (1/1) ... [2020-12-22 08:06:29,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:29" (1/1) ... [2020-12-22 08:06:29,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:29" (1/1) ... [2020-12-22 08:06:29,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:06:29,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:06:29,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:06:29,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:06:29,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:06:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:06:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:06:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:06:29,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:06:31,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:06:31,314 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:06:31,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:06:31 BoogieIcfgContainer [2020-12-22 08:06:31,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:06:31,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:06:31,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:06:31,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:06:31,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:06:28" (1/3) ... [2020-12-22 08:06:31,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db5d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:06:31, skipping insertion in model container [2020-12-22 08:06:31,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:29" (2/3) ... [2020-12-22 08:06:31,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db5d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:06:31, skipping insertion in model container [2020-12-22 08:06:31,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:06:31" (3/3) ... [2020-12-22 08:06:31,328 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:06:31,336 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:06:31,342 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 08:06:31,364 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 08:06:31,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:06:31,397 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:06:31,397 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:06:31,397 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:06:31,397 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:06:31,397 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:06:31,398 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:06:31,398 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:06:31,426 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states. [2020-12-22 08:06:31,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 08:06:31,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:31,445 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] [2020-12-22 08:06:31,445 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:31,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:31,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1860790591, now seen corresponding path program 1 times [2020-12-22 08:06:31,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:31,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272348539] [2020-12-22 08:06:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:32,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272348539] [2020-12-22 08:06:32,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:32,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:32,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475960721] [2020-12-22 08:06:32,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:32,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:32,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:32,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:32,262 INFO L87 Difference]: Start difference. First operand 388 states. Second operand 3 states. [2020-12-22 08:06:32,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:32,569 INFO L93 Difference]: Finished difference Result 717 states and 1276 transitions. [2020-12-22 08:06:32,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:32,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2020-12-22 08:06:32,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:32,616 INFO L225 Difference]: With dead ends: 717 [2020-12-22 08:06:32,617 INFO L226 Difference]: Without dead ends: 589 [2020-12-22 08:06:32,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:32,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-12-22 08:06:32,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 587. [2020-12-22 08:06:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-12-22 08:06:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 861 transitions. [2020-12-22 08:06:32,775 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 861 transitions. Word has length 141 [2020-12-22 08:06:32,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:32,776 INFO L481 AbstractCegarLoop]: Abstraction has 587 states and 861 transitions. [2020-12-22 08:06:32,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:32,777 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 861 transitions. [2020-12-22 08:06:32,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 08:06:32,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:32,790 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] [2020-12-22 08:06:32,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:06:32,790 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:32,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:32,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1860359615, now seen corresponding path program 1 times [2020-12-22 08:06:32,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:32,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936496851] [2020-12-22 08:06:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:33,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936496851] [2020-12-22 08:06:33,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:33,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:06:33,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710994848] [2020-12-22 08:06:33,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:06:33,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:33,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:06:33,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:06:33,159 INFO L87 Difference]: Start difference. First operand 587 states and 861 transitions. Second operand 4 states. [2020-12-22 08:06:33,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:33,346 INFO L93 Difference]: Finished difference Result 1719 states and 2514 transitions. [2020-12-22 08:06:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:33,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-12-22 08:06:33,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:33,354 INFO L225 Difference]: With dead ends: 1719 [2020-12-22 08:06:33,354 INFO L226 Difference]: Without dead ends: 1141 [2020-12-22 08:06:33,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2020-12-22 08:06:33,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1103. [2020-12-22 08:06:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-12-22 08:06:33,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1612 transitions. [2020-12-22 08:06:33,446 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1612 transitions. Word has length 141 [2020-12-22 08:06:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:33,448 INFO L481 AbstractCegarLoop]: Abstraction has 1103 states and 1612 transitions. [2020-12-22 08:06:33,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:06:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1612 transitions. [2020-12-22 08:06:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 08:06:33,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:33,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:33,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:06:33,454 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:33,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:33,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1839649003, now seen corresponding path program 1 times [2020-12-22 08:06:33,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:33,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064308091] [2020-12-22 08:06:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:33,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064308091] [2020-12-22 08:06:33,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:33,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:33,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956351908] [2020-12-22 08:06:33,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:33,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:33,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:33,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:33,599 INFO L87 Difference]: Start difference. First operand 1103 states and 1612 transitions. Second operand 3 states. [2020-12-22 08:06:33,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:33,757 INFO L93 Difference]: Finished difference Result 3271 states and 4774 transitions. [2020-12-22 08:06:33,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:33,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-12-22 08:06:33,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:33,781 INFO L225 Difference]: With dead ends: 3271 [2020-12-22 08:06:33,790 INFO L226 Difference]: Without dead ends: 2196 [2020-12-22 08:06:33,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:33,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2020-12-22 08:06:33,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1105. [2020-12-22 08:06:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1105 states. [2020-12-22 08:06:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1614 transitions. [2020-12-22 08:06:33,910 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1614 transitions. Word has length 142 [2020-12-22 08:06:33,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:33,910 INFO L481 AbstractCegarLoop]: Abstraction has 1105 states and 1614 transitions. [2020-12-22 08:06:33,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:33,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1614 transitions. [2020-12-22 08:06:33,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 08:06:33,920 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:33,920 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] [2020-12-22 08:06:33,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:06:33,922 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:33,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:33,923 INFO L82 PathProgramCache]: Analyzing trace with hash 734467803, now seen corresponding path program 1 times [2020-12-22 08:06:33,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:33,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453665510] [2020-12-22 08:06:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:34,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453665510] [2020-12-22 08:06:34,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:34,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:34,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806956088] [2020-12-22 08:06:34,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:34,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:34,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:34,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:34,171 INFO L87 Difference]: Start difference. First operand 1105 states and 1614 transitions. Second operand 3 states. [2020-12-22 08:06:34,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:34,367 INFO L93 Difference]: Finished difference Result 3075 states and 4501 transitions. [2020-12-22 08:06:34,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:34,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-12-22 08:06:34,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:34,380 INFO L225 Difference]: With dead ends: 3075 [2020-12-22 08:06:34,381 INFO L226 Difference]: Without dead ends: 2146 [2020-12-22 08:06:34,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:34,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2020-12-22 08:06:34,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 2108. [2020-12-22 08:06:34,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2108 states. [2020-12-22 08:06:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3060 transitions. [2020-12-22 08:06:34,558 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3060 transitions. Word has length 143 [2020-12-22 08:06:34,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:34,559 INFO L481 AbstractCegarLoop]: Abstraction has 2108 states and 3060 transitions. [2020-12-22 08:06:34,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:34,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3060 transitions. [2020-12-22 08:06:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 08:06:34,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:34,564 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] [2020-12-22 08:06:34,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:06:34,565 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:34,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:34,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1947336930, now seen corresponding path program 1 times [2020-12-22 08:06:34,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:34,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438583932] [2020-12-22 08:06:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:34,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438583932] [2020-12-22 08:06:34,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:34,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:06:34,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533725358] [2020-12-22 08:06:34,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:06:34,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:34,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:06:34,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:34,899 INFO L87 Difference]: Start difference. First operand 2108 states and 3060 transitions. Second operand 5 states. [2020-12-22 08:06:35,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:35,281 INFO L93 Difference]: Finished difference Result 6002 states and 8697 transitions. [2020-12-22 08:06:35,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:35,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-12-22 08:06:35,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:35,330 INFO L225 Difference]: With dead ends: 6002 [2020-12-22 08:06:35,330 INFO L226 Difference]: Without dead ends: 3908 [2020-12-22 08:06:35,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:35,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2020-12-22 08:06:35,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3878. [2020-12-22 08:06:35,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3878 states. [2020-12-22 08:06:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 5564 transitions. [2020-12-22 08:06:35,670 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 5564 transitions. Word has length 143 [2020-12-22 08:06:35,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:35,671 INFO L481 AbstractCegarLoop]: Abstraction has 3878 states and 5564 transitions. [2020-12-22 08:06:35,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:06:35,672 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 5564 transitions. [2020-12-22 08:06:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 08:06:35,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:35,678 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] [2020-12-22 08:06:35,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:06:35,679 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:35,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:35,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1237819550, now seen corresponding path program 1 times [2020-12-22 08:06:35,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:35,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413936313] [2020-12-22 08:06:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:35,890 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 08:06:35,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413936313] [2020-12-22 08:06:35,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:35,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:06:35,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552654506] [2020-12-22 08:06:35,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:06:35,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:35,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:06:35,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:06:35,893 INFO L87 Difference]: Start difference. First operand 3878 states and 5564 transitions. Second operand 4 states. [2020-12-22 08:06:36,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:36,490 INFO L93 Difference]: Finished difference Result 11345 states and 16231 transitions. [2020-12-22 08:06:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:36,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-12-22 08:06:36,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:36,526 INFO L225 Difference]: With dead ends: 11345 [2020-12-22 08:06:36,527 INFO L226 Difference]: Without dead ends: 7523 [2020-12-22 08:06:36,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:36,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7523 states. [2020-12-22 08:06:37,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7523 to 7479. [2020-12-22 08:06:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7479 states. [2020-12-22 08:06:37,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7479 states to 7479 states and 10620 transitions. [2020-12-22 08:06:37,166 INFO L78 Accepts]: Start accepts. Automaton has 7479 states and 10620 transitions. Word has length 143 [2020-12-22 08:06:37,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:37,168 INFO L481 AbstractCegarLoop]: Abstraction has 7479 states and 10620 transitions. [2020-12-22 08:06:37,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:06:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 7479 states and 10620 transitions. [2020-12-22 08:06:37,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 08:06:37,185 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:37,187 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] [2020-12-22 08:06:37,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:06:37,188 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:37,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:37,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1470261354, now seen corresponding path program 1 times [2020-12-22 08:06:37,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:37,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957110356] [2020-12-22 08:06:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:37,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957110356] [2020-12-22 08:06:37,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:37,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:37,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874133860] [2020-12-22 08:06:37,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:37,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:37,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:37,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:37,276 INFO L87 Difference]: Start difference. First operand 7479 states and 10620 transitions. Second operand 3 states. [2020-12-22 08:06:38,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:38,172 INFO L93 Difference]: Finished difference Result 22285 states and 31627 transitions. [2020-12-22 08:06:38,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:38,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2020-12-22 08:06:38,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:38,235 INFO L225 Difference]: With dead ends: 22285 [2020-12-22 08:06:38,235 INFO L226 Difference]: Without dead ends: 14897 [2020-12-22 08:06:38,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:38,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14897 states. [2020-12-22 08:06:38,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14897 to 7489. [2020-12-22 08:06:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7489 states. [2020-12-22 08:06:38,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7489 states to 7489 states and 10630 transitions. [2020-12-22 08:06:38,853 INFO L78 Accepts]: Start accepts. Automaton has 7489 states and 10630 transitions. Word has length 144 [2020-12-22 08:06:38,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:38,853 INFO L481 AbstractCegarLoop]: Abstraction has 7489 states and 10630 transitions. [2020-12-22 08:06:38,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:38,854 INFO L276 IsEmpty]: Start isEmpty. Operand 7489 states and 10630 transitions. [2020-12-22 08:06:38,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 08:06:38,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:38,869 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] [2020-12-22 08:06:38,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:06:38,869 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:38,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:38,871 INFO L82 PathProgramCache]: Analyzing trace with hash -671861994, now seen corresponding path program 1 times [2020-12-22 08:06:38,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:38,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667853824] [2020-12-22 08:06:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:39,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:39,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667853824] [2020-12-22 08:06:39,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:39,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:39,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761326804] [2020-12-22 08:06:39,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:39,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:39,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:39,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:39,045 INFO L87 Difference]: Start difference. First operand 7489 states and 10630 transitions. Second operand 3 states. [2020-12-22 08:06:39,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:39,975 INFO L93 Difference]: Finished difference Result 21181 states and 30129 transitions. [2020-12-22 08:06:39,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:39,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2020-12-22 08:06:39,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:40,029 INFO L225 Difference]: With dead ends: 21181 [2020-12-22 08:06:40,029 INFO L226 Difference]: Without dead ends: 14533 [2020-12-22 08:06:40,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:40,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14533 states. [2020-12-22 08:06:40,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14533 to 14489. [2020-12-22 08:06:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14489 states. [2020-12-22 08:06:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14489 states to 14489 states and 20353 transitions. [2020-12-22 08:06:40,957 INFO L78 Accepts]: Start accepts. Automaton has 14489 states and 20353 transitions. Word has length 145 [2020-12-22 08:06:40,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:40,957 INFO L481 AbstractCegarLoop]: Abstraction has 14489 states and 20353 transitions. [2020-12-22 08:06:40,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand 14489 states and 20353 transitions. [2020-12-22 08:06:40,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 08:06:40,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:40,979 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] [2020-12-22 08:06:40,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:06:40,980 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:40,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:40,981 INFO L82 PathProgramCache]: Analyzing trace with hash -720915239, now seen corresponding path program 1 times [2020-12-22 08:06:40,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:40,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476718930] [2020-12-22 08:06:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:41,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476718930] [2020-12-22 08:06:41,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:41,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:06:41,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911642964] [2020-12-22 08:06:41,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:06:41,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:41,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:06:41,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:41,267 INFO L87 Difference]: Start difference. First operand 14489 states and 20353 transitions. Second operand 5 states. [2020-12-22 08:06:42,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:42,749 INFO L93 Difference]: Finished difference Result 38834 states and 54380 transitions. [2020-12-22 08:06:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:42,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-12-22 08:06:42,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:42,811 INFO L225 Difference]: With dead ends: 38834 [2020-12-22 08:06:42,811 INFO L226 Difference]: Without dead ends: 24423 [2020-12-22 08:06:42,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:42,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24423 states. [2020-12-22 08:06:44,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24423 to 24397. [2020-12-22 08:06:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24397 states. [2020-12-22 08:06:44,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24397 states to 24397 states and 33649 transitions. [2020-12-22 08:06:44,294 INFO L78 Accepts]: Start accepts. Automaton has 24397 states and 33649 transitions. Word has length 145 [2020-12-22 08:06:44,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:44,294 INFO L481 AbstractCegarLoop]: Abstraction has 24397 states and 33649 transitions. [2020-12-22 08:06:44,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:06:44,295 INFO L276 IsEmpty]: Start isEmpty. Operand 24397 states and 33649 transitions. [2020-12-22 08:06:44,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 08:06:44,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:44,327 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] [2020-12-22 08:06:44,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:06:44,327 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:44,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:44,328 INFO L82 PathProgramCache]: Analyzing trace with hash 909534973, now seen corresponding path program 1 times [2020-12-22 08:06:44,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:44,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530799923] [2020-12-22 08:06:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:44,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530799923] [2020-12-22 08:06:44,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:44,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:06:44,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203372276] [2020-12-22 08:06:44,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:06:44,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:44,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:06:44,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:06:44,606 INFO L87 Difference]: Start difference. First operand 24397 states and 33649 transitions. Second operand 4 states. [2020-12-22 08:06:46,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:46,345 INFO L93 Difference]: Finished difference Result 49325 states and 67865 transitions. [2020-12-22 08:06:46,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:46,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-12-22 08:06:46,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:46,401 INFO L225 Difference]: With dead ends: 49325 [2020-12-22 08:06:46,401 INFO L226 Difference]: Without dead ends: 25322 [2020-12-22 08:06:46,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:46,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25322 states. [2020-12-22 08:06:47,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25322 to 24863. [2020-12-22 08:06:47,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24863 states. [2020-12-22 08:06:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24863 states to 24863 states and 34162 transitions. [2020-12-22 08:06:47,836 INFO L78 Accepts]: Start accepts. Automaton has 24863 states and 34162 transitions. Word has length 145 [2020-12-22 08:06:47,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:47,837 INFO L481 AbstractCegarLoop]: Abstraction has 24863 states and 34162 transitions. [2020-12-22 08:06:47,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:06:47,837 INFO L276 IsEmpty]: Start isEmpty. Operand 24863 states and 34162 transitions. [2020-12-22 08:06:47,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-22 08:06:47,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:47,885 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] [2020-12-22 08:06:47,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:06:47,886 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:47,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:47,887 INFO L82 PathProgramCache]: Analyzing trace with hash -497015959, now seen corresponding path program 1 times [2020-12-22 08:06:47,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:47,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674273828] [2020-12-22 08:06:47,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:47,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:47,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674273828] [2020-12-22 08:06:47,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:47,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:47,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881587567] [2020-12-22 08:06:47,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:47,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:47,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:47,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:47,942 INFO L87 Difference]: Start difference. First operand 24863 states and 34162 transitions. Second operand 3 states. [2020-12-22 08:06:50,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:50,417 INFO L93 Difference]: Finished difference Result 72633 states and 100090 transitions. [2020-12-22 08:06:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:50,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2020-12-22 08:06:50,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:50,542 INFO L225 Difference]: With dead ends: 72633 [2020-12-22 08:06:50,542 INFO L226 Difference]: Without dead ends: 49312 [2020-12-22 08:06:50,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49312 states. [2020-12-22 08:06:52,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49312 to 24903. [2020-12-22 08:06:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24903 states. [2020-12-22 08:06:52,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24903 states to 24903 states and 34202 transitions. [2020-12-22 08:06:52,340 INFO L78 Accepts]: Start accepts. Automaton has 24903 states and 34202 transitions. Word has length 146 [2020-12-22 08:06:52,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:52,340 INFO L481 AbstractCegarLoop]: Abstraction has 24903 states and 34202 transitions. [2020-12-22 08:06:52,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:52,341 INFO L276 IsEmpty]: Start isEmpty. Operand 24903 states and 34202 transitions. [2020-12-22 08:06:52,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 08:06:52,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:52,371 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] [2020-12-22 08:06:52,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:06:52,372 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:52,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:52,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1442584356, now seen corresponding path program 1 times [2020-12-22 08:06:52,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:52,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097316078] [2020-12-22 08:06:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:52,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097316078] [2020-12-22 08:06:52,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:52,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:06:52,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995392084] [2020-12-22 08:06:52,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:06:52,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:52,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:06:52,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:06:52,535 INFO L87 Difference]: Start difference. First operand 24903 states and 34202 transitions. Second operand 4 states. [2020-12-22 08:06:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:53,917 INFO L93 Difference]: Finished difference Result 40404 states and 55585 transitions. [2020-12-22 08:06:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:53,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-12-22 08:06:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:53,943 INFO L225 Difference]: With dead ends: 40404 [2020-12-22 08:06:53,944 INFO L226 Difference]: Without dead ends: 16484 [2020-12-22 08:06:53,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:53,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16484 states. [2020-12-22 08:06:55,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16484 to 16484. [2020-12-22 08:06:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16484 states. [2020-12-22 08:06:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16484 states to 16484 states and 22549 transitions. [2020-12-22 08:06:55,029 INFO L78 Accepts]: Start accepts. Automaton has 16484 states and 22549 transitions. Word has length 147 [2020-12-22 08:06:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:55,030 INFO L481 AbstractCegarLoop]: Abstraction has 16484 states and 22549 transitions. [2020-12-22 08:06:55,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:06:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 16484 states and 22549 transitions. [2020-12-22 08:06:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 08:06:55,044 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:55,044 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] [2020-12-22 08:06:55,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:06:55,045 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:55,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:55,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1557306087, now seen corresponding path program 1 times [2020-12-22 08:06:55,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:55,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619150394] [2020-12-22 08:06:55,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:55,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619150394] [2020-12-22 08:06:55,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:55,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:06:55,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260035106] [2020-12-22 08:06:55,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:06:55,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:55,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:06:55,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:06:55,233 INFO L87 Difference]: Start difference. First operand 16484 states and 22549 transitions. Second operand 4 states. [2020-12-22 08:06:56,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:56,860 INFO L93 Difference]: Finished difference Result 32605 states and 46325 transitions. [2020-12-22 08:06:56,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:56,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-12-22 08:06:56,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:56,893 INFO L225 Difference]: With dead ends: 32605 [2020-12-22 08:06:56,893 INFO L226 Difference]: Without dead ends: 26686 [2020-12-22 08:06:56,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:06:56,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26686 states. [2020-12-22 08:06:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26686 to 26684. [2020-12-22 08:06:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26684 states. [2020-12-22 08:06:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26684 states to 26684 states and 36777 transitions. [2020-12-22 08:06:58,669 INFO L78 Accepts]: Start accepts. Automaton has 26684 states and 36777 transitions. Word has length 155 [2020-12-22 08:06:58,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:58,670 INFO L481 AbstractCegarLoop]: Abstraction has 26684 states and 36777 transitions. [2020-12-22 08:06:58,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:06:58,670 INFO L276 IsEmpty]: Start isEmpty. Operand 26684 states and 36777 transitions. [2020-12-22 08:06:58,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 08:06:58,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:58,688 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] [2020-12-22 08:06:58,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:06:58,689 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:58,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:58,689 INFO L82 PathProgramCache]: Analyzing trace with hash 296784743, now seen corresponding path program 1 times [2020-12-22 08:06:58,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:58,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130214681] [2020-12-22 08:06:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:58,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130214681] [2020-12-22 08:06:58,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:58,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:06:58,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698801832] [2020-12-22 08:06:58,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:06:58,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:58,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:06:58,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:06:58,851 INFO L87 Difference]: Start difference. First operand 26684 states and 36777 transitions. Second operand 4 states. [2020-12-22 08:07:00,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:00,537 INFO L93 Difference]: Finished difference Result 44294 states and 61254 transitions. [2020-12-22 08:07:00,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:00,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-12-22 08:07:00,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:00,569 INFO L225 Difference]: With dead ends: 44294 [2020-12-22 08:07:00,570 INFO L226 Difference]: Without dead ends: 24301 [2020-12-22 08:07:00,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:00,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24301 states. [2020-12-22 08:07:02,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24301 to 24301. [2020-12-22 08:07:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24301 states. [2020-12-22 08:07:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24301 states to 24301 states and 33596 transitions. [2020-12-22 08:07:02,196 INFO L78 Accepts]: Start accepts. Automaton has 24301 states and 33596 transitions. Word has length 155 [2020-12-22 08:07:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:02,196 INFO L481 AbstractCegarLoop]: Abstraction has 24301 states and 33596 transitions. [2020-12-22 08:07:02,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 24301 states and 33596 transitions. [2020-12-22 08:07:02,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 08:07:02,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:02,212 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] [2020-12-22 08:07:02,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:07:02,213 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:02,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:02,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1163062228, now seen corresponding path program 1 times [2020-12-22 08:07:02,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:02,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648306004] [2020-12-22 08:07:02,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:02,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648306004] [2020-12-22 08:07:02,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:02,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:02,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108670075] [2020-12-22 08:07:02,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:02,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:02,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:02,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:02,290 INFO L87 Difference]: Start difference. First operand 24301 states and 33596 transitions. Second operand 3 states. [2020-12-22 08:07:04,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:04,905 INFO L93 Difference]: Finished difference Result 68381 states and 95160 transitions. [2020-12-22 08:07:04,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:04,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-12-22 08:07:04,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:04,959 INFO L225 Difference]: With dead ends: 68381 [2020-12-22 08:07:04,959 INFO L226 Difference]: Without dead ends: 47183 [2020-12-22 08:07:04,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47183 states. [2020-12-22 08:07:08,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47183 to 47129. [2020-12-22 08:07:08,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47129 states. [2020-12-22 08:07:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47129 states to 47129 states and 64776 transitions. [2020-12-22 08:07:08,093 INFO L78 Accepts]: Start accepts. Automaton has 47129 states and 64776 transitions. Word has length 161 [2020-12-22 08:07:08,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:08,094 INFO L481 AbstractCegarLoop]: Abstraction has 47129 states and 64776 transitions. [2020-12-22 08:07:08,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:08,094 INFO L276 IsEmpty]: Start isEmpty. Operand 47129 states and 64776 transitions. [2020-12-22 08:07:08,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 08:07:08,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:08,143 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] [2020-12-22 08:07:08,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:07:08,143 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:08,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:08,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1593816879, now seen corresponding path program 1 times [2020-12-22 08:07:08,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:08,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027423795] [2020-12-22 08:07:08,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:08,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027423795] [2020-12-22 08:07:08,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:08,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:07:08,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643915732] [2020-12-22 08:07:08,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:07:08,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:08,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:07:08,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:07:08,420 INFO L87 Difference]: Start difference. First operand 47129 states and 64776 transitions. Second operand 9 states. [2020-12-22 08:07:11,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:11,120 INFO L93 Difference]: Finished difference Result 61353 states and 87171 transitions. [2020-12-22 08:07:11,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:11,121 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-12-22 08:07:11,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:11,161 INFO L225 Difference]: With dead ends: 61353 [2020-12-22 08:07:11,161 INFO L226 Difference]: Without dead ends: 42651 [2020-12-22 08:07:11,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:07:11,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42651 states. [2020-12-22 08:07:13,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42651 to 42649. [2020-12-22 08:07:13,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42649 states. [2020-12-22 08:07:13,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42649 states to 42649 states and 57335 transitions. [2020-12-22 08:07:13,727 INFO L78 Accepts]: Start accepts. Automaton has 42649 states and 57335 transitions. Word has length 161 [2020-12-22 08:07:13,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:13,728 INFO L481 AbstractCegarLoop]: Abstraction has 42649 states and 57335 transitions. [2020-12-22 08:07:13,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:07:13,728 INFO L276 IsEmpty]: Start isEmpty. Operand 42649 states and 57335 transitions. [2020-12-22 08:07:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 08:07:13,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:13,751 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] [2020-12-22 08:07:13,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:07:13,752 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:13,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:13,752 INFO L82 PathProgramCache]: Analyzing trace with hash 554982836, now seen corresponding path program 1 times [2020-12-22 08:07:13,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:13,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974695235] [2020-12-22 08:07:13,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:13,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974695235] [2020-12-22 08:07:13,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:13,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:13,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419625064] [2020-12-22 08:07:13,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:13,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:13,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:13,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:13,954 INFO L87 Difference]: Start difference. First operand 42649 states and 57335 transitions. Second operand 4 states. [2020-12-22 08:07:15,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:15,717 INFO L93 Difference]: Finished difference Result 71323 states and 95769 transitions. [2020-12-22 08:07:15,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:15,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-12-22 08:07:15,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:15,745 INFO L225 Difference]: With dead ends: 71323 [2020-12-22 08:07:15,745 INFO L226 Difference]: Without dead ends: 28744 [2020-12-22 08:07:15,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:15,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28744 states. [2020-12-22 08:07:17,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28744 to 28744. [2020-12-22 08:07:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28744 states. [2020-12-22 08:07:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28744 states to 28744 states and 38520 transitions. [2020-12-22 08:07:17,709 INFO L78 Accepts]: Start accepts. Automaton has 28744 states and 38520 transitions. Word has length 161 [2020-12-22 08:07:17,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:17,710 INFO L481 AbstractCegarLoop]: Abstraction has 28744 states and 38520 transitions. [2020-12-22 08:07:17,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:17,710 INFO L276 IsEmpty]: Start isEmpty. Operand 28744 states and 38520 transitions. [2020-12-22 08:07:17,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-22 08:07:17,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:17,726 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] [2020-12-22 08:07:17,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:07:17,727 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:17,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:17,727 INFO L82 PathProgramCache]: Analyzing trace with hash 414006733, now seen corresponding path program 1 times [2020-12-22 08:07:17,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:17,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094210339] [2020-12-22 08:07:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:17,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094210339] [2020-12-22 08:07:17,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:17,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:07:17,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300251262] [2020-12-22 08:07:17,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:07:17,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:17,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:07:17,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:07:17,882 INFO L87 Difference]: Start difference. First operand 28744 states and 38520 transitions. Second operand 6 states. [2020-12-22 08:07:20,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:20,003 INFO L93 Difference]: Finished difference Result 56423 states and 75789 transitions. [2020-12-22 08:07:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:07:20,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-12-22 08:07:20,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:20,029 INFO L225 Difference]: With dead ends: 56423 [2020-12-22 08:07:20,030 INFO L226 Difference]: Without dead ends: 28746 [2020-12-22 08:07:20,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:07:20,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28746 states. [2020-12-22 08:07:21,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28746 to 28588. [2020-12-22 08:07:21,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28588 states. [2020-12-22 08:07:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28588 states to 28588 states and 37916 transitions. [2020-12-22 08:07:21,848 INFO L78 Accepts]: Start accepts. Automaton has 28588 states and 37916 transitions. Word has length 169 [2020-12-22 08:07:21,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:21,848 INFO L481 AbstractCegarLoop]: Abstraction has 28588 states and 37916 transitions. [2020-12-22 08:07:21,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:07:21,848 INFO L276 IsEmpty]: Start isEmpty. Operand 28588 states and 37916 transitions. [2020-12-22 08:07:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-22 08:07:21,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:21,865 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] [2020-12-22 08:07:21,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:07:21,865 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:21,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:21,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1444044968, now seen corresponding path program 1 times [2020-12-22 08:07:21,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:21,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930472200] [2020-12-22 08:07:21,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:22,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930472200] [2020-12-22 08:07:22,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:22,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:22,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939447077] [2020-12-22 08:07:22,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:22,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:22,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:22,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:22,007 INFO L87 Difference]: Start difference. First operand 28588 states and 37916 transitions. Second operand 4 states. [2020-12-22 08:07:24,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:24,958 INFO L93 Difference]: Finished difference Result 52350 states and 71145 transitions. [2020-12-22 08:07:24,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:24,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-12-22 08:07:24,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:24,999 INFO L225 Difference]: With dead ends: 52350 [2020-12-22 08:07:24,999 INFO L226 Difference]: Without dead ends: 41075 [2020-12-22 08:07:25,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:25,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41075 states. [2020-12-22 08:07:27,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41075 to 41073. [2020-12-22 08:07:27,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41073 states. [2020-12-22 08:07:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41073 states to 41073 states and 53829 transitions. [2020-12-22 08:07:27,809 INFO L78 Accepts]: Start accepts. Automaton has 41073 states and 53829 transitions. Word has length 169 [2020-12-22 08:07:27,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:27,809 INFO L481 AbstractCegarLoop]: Abstraction has 41073 states and 53829 transitions. [2020-12-22 08:07:27,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 41073 states and 53829 transitions. [2020-12-22 08:07:27,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-22 08:07:27,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:27,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:27,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:07:27,834 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:27,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:27,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1157430736, now seen corresponding path program 1 times [2020-12-22 08:07:27,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:27,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883462582] [2020-12-22 08:07:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:27,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883462582] [2020-12-22 08:07:27,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:27,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:27,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986598570] [2020-12-22 08:07:27,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:27,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:27,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:27,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:27,989 INFO L87 Difference]: Start difference. First operand 41073 states and 53829 transitions. Second operand 4 states. [2020-12-22 08:07:31,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:31,196 INFO L93 Difference]: Finished difference Result 82429 states and 107978 transitions. [2020-12-22 08:07:31,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:31,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-12-22 08:07:31,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:31,237 INFO L225 Difference]: With dead ends: 82429 [2020-12-22 08:07:31,237 INFO L226 Difference]: Without dead ends: 41682 [2020-12-22 08:07:31,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:31,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41682 states. [2020-12-22 08:07:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41682 to 41361. [2020-12-22 08:07:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41361 states. [2020-12-22 08:07:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41361 states to 41361 states and 54136 transitions. [2020-12-22 08:07:34,204 INFO L78 Accepts]: Start accepts. Automaton has 41361 states and 54136 transitions. Word has length 169 [2020-12-22 08:07:34,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:34,204 INFO L481 AbstractCegarLoop]: Abstraction has 41361 states and 54136 transitions. [2020-12-22 08:07:34,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:34,204 INFO L276 IsEmpty]: Start isEmpty. Operand 41361 states and 54136 transitions. [2020-12-22 08:07:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-22 08:07:34,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:34,230 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] [2020-12-22 08:07:34,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:07:34,230 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:34,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1236291671, now seen corresponding path program 1 times [2020-12-22 08:07:34,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:34,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752370984] [2020-12-22 08:07:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:34,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752370984] [2020-12-22 08:07:34,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:34,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:34,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041649025] [2020-12-22 08:07:34,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:34,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:34,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:34,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:34,381 INFO L87 Difference]: Start difference. First operand 41361 states and 54136 transitions. Second operand 4 states. [2020-12-22 08:07:37,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:37,308 INFO L93 Difference]: Finished difference Result 59148 states and 77388 transitions. [2020-12-22 08:07:37,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:37,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2020-12-22 08:07:37,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:37,339 INFO L225 Difference]: With dead ends: 59148 [2020-12-22 08:07:37,339 INFO L226 Difference]: Without dead ends: 35812 [2020-12-22 08:07:37,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:37,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35812 states. [2020-12-22 08:07:39,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35812 to 35812. [2020-12-22 08:07:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35812 states. [2020-12-22 08:07:39,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35812 states to 35812 states and 46843 transitions. [2020-12-22 08:07:39,802 INFO L78 Accepts]: Start accepts. Automaton has 35812 states and 46843 transitions. Word has length 169 [2020-12-22 08:07:39,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:39,803 INFO L481 AbstractCegarLoop]: Abstraction has 35812 states and 46843 transitions. [2020-12-22 08:07:39,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:39,803 INFO L276 IsEmpty]: Start isEmpty. Operand 35812 states and 46843 transitions. [2020-12-22 08:07:39,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 08:07:39,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:39,824 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] [2020-12-22 08:07:39,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:07:39,824 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:39,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:39,825 INFO L82 PathProgramCache]: Analyzing trace with hash -855174734, now seen corresponding path program 1 times [2020-12-22 08:07:39,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:39,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736286064] [2020-12-22 08:07:39,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:41,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736286064] [2020-12-22 08:07:41,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:41,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-12-22 08:07:41,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209372633] [2020-12-22 08:07:41,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 08:07:41,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:41,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 08:07:41,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:07:41,204 INFO L87 Difference]: Start difference. First operand 35812 states and 46843 transitions. Second operand 22 states. [2020-12-22 08:07:42,015 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2020-12-22 08:07:42,248 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:07:42,592 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:07:42,882 WARN L197 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:07:43,145 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-12-22 08:07:44,150 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-22 08:07:44,603 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-12-22 08:07:45,552 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2020-12-22 08:07:45,988 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2020-12-22 08:07:46,991 WARN L197 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2020-12-22 08:07:47,280 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2020-12-22 08:07:47,713 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2020-12-22 08:07:48,125 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2020-12-22 08:07:48,437 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2020-12-22 08:07:48,857 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2020-12-22 08:07:49,475 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-12-22 08:07:49,736 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-12-22 08:07:50,115 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-12-22 08:07:50,432 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-12-22 08:07:50,836 WARN L197 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-22 08:07:51,242 WARN L197 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-12-22 08:07:51,542 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-22 08:07:51,883 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-22 08:07:52,399 WARN L197 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-12-22 08:07:52,793 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-12-22 08:07:53,096 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-12-22 08:07:53,512 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 08:07:54,445 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-12-22 08:07:55,015 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 08:07:58,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:58,121 INFO L93 Difference]: Finished difference Result 55948 states and 74303 transitions. [2020-12-22 08:07:58,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-22 08:07:58,124 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 171 [2020-12-22 08:07:58,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:58,186 INFO L225 Difference]: With dead ends: 55948 [2020-12-22 08:07:58,186 INFO L226 Difference]: Without dead ends: 54608 [2020-12-22 08:07:58,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=722, Invalid=2358, Unknown=0, NotChecked=0, Total=3080 [2020-12-22 08:07:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54608 states. [2020-12-22 08:08:01,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54608 to 37462. [2020-12-22 08:08:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37462 states. [2020-12-22 08:08:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37462 states to 37462 states and 48804 transitions. [2020-12-22 08:08:01,531 INFO L78 Accepts]: Start accepts. Automaton has 37462 states and 48804 transitions. Word has length 171 [2020-12-22 08:08:01,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:01,531 INFO L481 AbstractCegarLoop]: Abstraction has 37462 states and 48804 transitions. [2020-12-22 08:08:01,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 08:08:01,531 INFO L276 IsEmpty]: Start isEmpty. Operand 37462 states and 48804 transitions. [2020-12-22 08:08:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 08:08:01,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:01,559 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] [2020-12-22 08:08:01,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:08:01,559 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:01,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:01,560 INFO L82 PathProgramCache]: Analyzing trace with hash -176781235, now seen corresponding path program 1 times [2020-12-22 08:08:01,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:01,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432993378] [2020-12-22 08:08:01,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:08:01,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432993378] [2020-12-22 08:08:01,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:01,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:08:01,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275303058] [2020-12-22 08:08:01,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:08:01,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:01,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:08:01,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:08:01,817 INFO L87 Difference]: Start difference. First operand 37462 states and 48804 transitions. Second operand 10 states. [2020-12-22 08:08:04,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:04,521 INFO L93 Difference]: Finished difference Result 61389 states and 81018 transitions. [2020-12-22 08:08:04,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:08:04,522 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-12-22 08:08:04,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:04,554 INFO L225 Difference]: With dead ends: 61389 [2020-12-22 08:08:04,555 INFO L226 Difference]: Without dead ends: 26126 [2020-12-22 08:08:04,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:08:04,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26126 states. [2020-12-22 08:08:06,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26126 to 20465. [2020-12-22 08:08:06,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20465 states. [2020-12-22 08:08:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20465 states to 20465 states and 26306 transitions. [2020-12-22 08:08:06,485 INFO L78 Accepts]: Start accepts. Automaton has 20465 states and 26306 transitions. Word has length 171 [2020-12-22 08:08:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:06,485 INFO L481 AbstractCegarLoop]: Abstraction has 20465 states and 26306 transitions. [2020-12-22 08:08:06,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:08:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 20465 states and 26306 transitions. [2020-12-22 08:08:06,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 08:08:06,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:06,498 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] [2020-12-22 08:08:06,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:08:06,498 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:06,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:06,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1795637352, now seen corresponding path program 1 times [2020-12-22 08:08:06,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:06,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419455620] [2020-12-22 08:08:06,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:07,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:08:07,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419455620] [2020-12-22 08:08:07,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:07,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-12-22 08:08:07,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726235637] [2020-12-22 08:08:07,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 08:08:07,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:07,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 08:08:07,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:08:07,621 INFO L87 Difference]: Start difference. First operand 20465 states and 26306 transitions. Second operand 22 states. [2020-12-22 08:08:08,167 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-22 08:08:08,310 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-22 08:08:08,485 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-22 08:08:08,745 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-12-22 08:08:09,022 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 08:08:09,812 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 08:08:10,255 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 08:08:10,432 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-12-22 08:08:10,657 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-12-22 08:08:10,998 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-12-22 08:08:11,159 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-12-22 08:08:11,493 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:08:12,443 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-12-22 08:08:13,482 WARN L197 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-12-22 08:08:13,898 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-12-22 08:08:14,674 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2020-12-22 08:08:15,238 WARN L197 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-12-22 08:08:15,697 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-12-22 08:08:16,034 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-12-22 08:08:16,307 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-12-22 08:08:17,028 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-12-22 08:08:17,510 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-12-22 08:08:18,138 WARN L197 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-12-22 08:08:18,544 WARN L197 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-12-22 08:08:18,884 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2020-12-22 08:08:19,113 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 08:08:19,570 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-12-22 08:08:19,891 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-12-22 08:08:20,280 WARN L197 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-12-22 08:08:20,599 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-12-22 08:08:20,937 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-12-22 08:08:21,118 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 08:08:21,423 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-12-22 08:08:21,927 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-12-22 08:08:22,125 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-12-22 08:08:22,392 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-22 08:08:22,604 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-12-22 08:08:22,833 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-12-22 08:08:22,990 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-12-22 08:08:23,372 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-12-22 08:08:23,652 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-12-22 08:08:24,004 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-12-22 08:08:24,241 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-12-22 08:08:24,688 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-12-22 08:08:25,152 WARN L197 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-12-22 08:08:25,650 WARN L197 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-12-22 08:08:26,075 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-12-22 08:08:26,391 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2020-12-22 08:08:27,117 WARN L197 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-12-22 08:08:27,766 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-12-22 08:08:29,980 WARN L197 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2020-12-22 08:08:30,499 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-12-22 08:08:31,096 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-12-22 08:08:31,408 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-12-22 08:08:32,118 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2020-12-22 08:08:32,722 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-22 08:08:34,265 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2020-12-22 08:08:34,614 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-12-22 08:08:35,102 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-12-22 08:08:35,376 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:08:35,832 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-12-22 08:08:36,075 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:08:36,845 WARN L197 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2020-12-22 08:08:37,334 WARN L197 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-12-22 08:08:37,893 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2020-12-22 08:08:38,312 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-12-22 08:08:39,463 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-12-22 08:08:39,720 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:08:40,229 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2020-12-22 08:08:40,578 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-12-22 08:08:41,871 WARN L197 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2020-12-22 08:08:42,510 WARN L197 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-12-22 08:08:44,580 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-12-22 08:08:44,842 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-12-22 08:08:46,996 WARN L197 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-12-22 08:08:47,338 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-12-22 08:08:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:48,217 INFO L93 Difference]: Finished difference Result 64190 states and 90870 transitions. [2020-12-22 08:08:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-12-22 08:08:48,218 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 171 [2020-12-22 08:08:48,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:48,287 INFO L225 Difference]: With dead ends: 64190 [2020-12-22 08:08:48,287 INFO L226 Difference]: Without dead ends: 62878 [2020-12-22 08:08:48,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3218 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=2023, Invalid=8483, Unknown=0, NotChecked=0, Total=10506 [2020-12-22 08:08:48,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62878 states. [2020-12-22 08:08:50,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62878 to 22258. [2020-12-22 08:08:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22258 states. [2020-12-22 08:08:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22258 states to 22258 states and 28464 transitions. [2020-12-22 08:08:51,013 INFO L78 Accepts]: Start accepts. Automaton has 22258 states and 28464 transitions. Word has length 171 [2020-12-22 08:08:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:51,013 INFO L481 AbstractCegarLoop]: Abstraction has 22258 states and 28464 transitions. [2020-12-22 08:08:51,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-22 08:08:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 22258 states and 28464 transitions. [2020-12-22 08:08:51,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 08:08:51,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:51,027 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] [2020-12-22 08:08:51,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:08:51,027 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:51,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:51,028 INFO L82 PathProgramCache]: Analyzing trace with hash 367317059, now seen corresponding path program 1 times [2020-12-22 08:08:51,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:51,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570618432] [2020-12-22 08:08:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:08:51,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570618432] [2020-12-22 08:08:51,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:51,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:08:51,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294683127] [2020-12-22 08:08:51,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:08:51,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:51,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:08:51,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:51,126 INFO L87 Difference]: Start difference. First operand 22258 states and 28464 transitions. Second operand 3 states. [2020-12-22 08:08:56,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:56,363 INFO L93 Difference]: Finished difference Result 52681 states and 68453 transitions. [2020-12-22 08:08:56,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:08:56,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-22 08:08:56,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:56,403 INFO L225 Difference]: With dead ends: 52681 [2020-12-22 08:08:56,403 INFO L226 Difference]: Without dead ends: 38202 [2020-12-22 08:08:56,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:56,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38202 states. [2020-12-22 08:09:00,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38202 to 37672. [2020-12-22 08:09:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37672 states. [2020-12-22 08:09:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37672 states to 37672 states and 48293 transitions. [2020-12-22 08:09:00,767 INFO L78 Accepts]: Start accepts. Automaton has 37672 states and 48293 transitions. Word has length 171 [2020-12-22 08:09:00,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:00,767 INFO L481 AbstractCegarLoop]: Abstraction has 37672 states and 48293 transitions. [2020-12-22 08:09:00,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:09:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 37672 states and 48293 transitions. [2020-12-22 08:09:00,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 08:09:00,790 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:00,790 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] [2020-12-22 08:09:00,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:09:00,790 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:00,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:00,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1837040563, now seen corresponding path program 1 times [2020-12-22 08:09:00,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:00,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707779624] [2020-12-22 08:09:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:09:01,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707779624] [2020-12-22 08:09:01,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:01,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:09:01,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751292474] [2020-12-22 08:09:01,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:09:01,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:01,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:09:01,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:09:01,082 INFO L87 Difference]: Start difference. First operand 37672 states and 48293 transitions. Second operand 11 states. [2020-12-22 08:09:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:05,832 INFO L93 Difference]: Finished difference Result 53408 states and 69853 transitions. [2020-12-22 08:09:05,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:09:05,833 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 171 [2020-12-22 08:09:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:05,867 INFO L225 Difference]: With dead ends: 53408 [2020-12-22 08:09:05,867 INFO L226 Difference]: Without dead ends: 37672 [2020-12-22 08:09:05,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:09:05,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37672 states. [2020-12-22 08:09:10,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37672 to 37672. [2020-12-22 08:09:10,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37672 states. [2020-12-22 08:09:10,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37672 states to 37672 states and 47943 transitions. [2020-12-22 08:09:10,560 INFO L78 Accepts]: Start accepts. Automaton has 37672 states and 47943 transitions. Word has length 171 [2020-12-22 08:09:10,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:10,560 INFO L481 AbstractCegarLoop]: Abstraction has 37672 states and 47943 transitions. [2020-12-22 08:09:10,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:09:10,560 INFO L276 IsEmpty]: Start isEmpty. Operand 37672 states and 47943 transitions. [2020-12-22 08:09:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 08:09:10,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:10,584 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] [2020-12-22 08:09:10,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 08:09:10,585 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:10,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:10,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1127609204, now seen corresponding path program 1 times [2020-12-22 08:09:10,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:10,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493720047] [2020-12-22 08:09:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:12,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:09:12,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493720047] [2020-12-22 08:09:12,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:12,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-12-22 08:09:12,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588700608] [2020-12-22 08:09:12,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 08:09:12,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:12,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 08:09:12,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:09:12,012 INFO L87 Difference]: Start difference. First operand 37672 states and 47943 transitions. Second operand 21 states. [2020-12-22 08:09:12,583 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-12-22 08:09:14,613 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-22 08:09:15,050 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-12-22 08:09:16,301 WARN L197 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-12-22 08:09:16,754 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-12-22 08:09:17,725 WARN L197 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-12-22 08:09:18,317 WARN L197 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-12-22 08:09:18,794 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-12-22 08:09:19,839 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-12-22 08:09:20,270 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-22 08:09:20,894 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-12-22 08:09:21,386 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-22 08:09:22,786 WARN L197 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-22 08:09:29,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:29,801 INFO L93 Difference]: Finished difference Result 56333 states and 74711 transitions. [2020-12-22 08:09:29,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:09:29,802 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 171 [2020-12-22 08:09:29,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:29,857 INFO L225 Difference]: With dead ends: 56333 [2020-12-22 08:09:29,857 INFO L226 Difference]: Without dead ends: 55341 [2020-12-22 08:09:29,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 08:09:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55341 states. [2020-12-22 08:09:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55341 to 38399. [2020-12-22 08:09:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38399 states. [2020-12-22 08:09:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38399 states to 38399 states and 48818 transitions. [2020-12-22 08:09:35,008 INFO L78 Accepts]: Start accepts. Automaton has 38399 states and 48818 transitions. Word has length 171 [2020-12-22 08:09:35,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:09:35,009 INFO L481 AbstractCegarLoop]: Abstraction has 38399 states and 48818 transitions. [2020-12-22 08:09:35,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 08:09:35,009 INFO L276 IsEmpty]: Start isEmpty. Operand 38399 states and 48818 transitions. [2020-12-22 08:09:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 08:09:35,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:09:35,035 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] [2020-12-22 08:09:35,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 08:09:35,036 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:09:35,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:09:35,036 INFO L82 PathProgramCache]: Analyzing trace with hash 2108510481, now seen corresponding path program 1 times [2020-12-22 08:09:35,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:09:35,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63269238] [2020-12-22 08:09:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:09:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:09:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:09:35,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63269238] [2020-12-22 08:09:35,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:09:35,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:09:35,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743914437] [2020-12-22 08:09:35,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:09:35,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:09:35,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:09:35,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:09:35,766 INFO L87 Difference]: Start difference. First operand 38399 states and 48818 transitions. Second operand 18 states. [2020-12-22 08:09:53,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:09:53,156 INFO L93 Difference]: Finished difference Result 92660 states and 123636 transitions. [2020-12-22 08:09:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:09:53,157 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 171 [2020-12-22 08:09:53,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:09:53,242 INFO L225 Difference]: With dead ends: 92660 [2020-12-22 08:09:53,242 INFO L226 Difference]: Without dead ends: 86397 [2020-12-22 08:09:53,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=425, Invalid=1467, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 08:09:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86397 states. [2020-12-22 08:10:00,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86397 to 49169. [2020-12-22 08:10:00,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49169 states. [2020-12-22 08:10:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49169 states to 49169 states and 61488 transitions. [2020-12-22 08:10:00,650 INFO L78 Accepts]: Start accepts. Automaton has 49169 states and 61488 transitions. Word has length 171 [2020-12-22 08:10:00,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:10:00,651 INFO L481 AbstractCegarLoop]: Abstraction has 49169 states and 61488 transitions. [2020-12-22 08:10:00,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 08:10:00,651 INFO L276 IsEmpty]: Start isEmpty. Operand 49169 states and 61488 transitions. [2020-12-22 08:10:00,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-22 08:10:00,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:10:00,684 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] [2020-12-22 08:10:00,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 08:10:00,684 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:10:00,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:10:00,684 INFO L82 PathProgramCache]: Analyzing trace with hash 416227804, now seen corresponding path program 1 times [2020-12-22 08:10:00,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:10:00,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337379089] [2020-12-22 08:10:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:10:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:10:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:10:01,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337379089] [2020-12-22 08:10:01,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:10:01,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:10:01,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122896660] [2020-12-22 08:10:01,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:10:01,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:10:01,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:10:01,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:10:01,255 INFO L87 Difference]: Start difference. First operand 49169 states and 61488 transitions. Second operand 16 states. [2020-12-22 08:10:01,390 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-12-22 08:10:04,105 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-12-22 08:10:05,305 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:10:05,620 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-22 08:10:05,827 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-22 08:10:06,124 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 08:10:06,491 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:10:06,650 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-22 08:10:09,930 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 08:10:11,042 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-22 08:10:14,074 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-22 08:10:15,394 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-12-22 08:10:15,584 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-12-22 08:10:15,957 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-12-22 08:10:17,634 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-12-22 08:10:17,812 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-22 08:10:18,088 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-22 08:10:21,101 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48