/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:03:40,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:03:40,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:03:40,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:03:40,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:03:40,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:03:40,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:03:40,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:03:40,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:03:40,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:03:40,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:03:40,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:03:40,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:03:40,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:03:40,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:03:40,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:03:40,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:03:40,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:03:40,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:03:40,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:03:40,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:03:40,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:03:40,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:03:40,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:03:40,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:03:40,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:03:40,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:03:40,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:03:40,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:03:40,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:03:40,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:03:40,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:03:40,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:03:40,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:03:40,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:03:40,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:03:40,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:03:40,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:03:40,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:03:40,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:03:40,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:03:40,966 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:03:40,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:03:40,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:03:40,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:03:40,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:03:40,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:03:40,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:03:40,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:03:40,968 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:03:40,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:03:40,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:03:40,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:03:40,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:03:40,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:03:40,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:03:40,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:03:40,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:03:40,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:03:40,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:03:40,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:03:40,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:03:40,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:03:41,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:03:41,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:03:41,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:03:41,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:03:41,420 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:03:41,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 09:03:41,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a01ad0b0b/ee2c1f44b2a24966ad1ba672b85c71c8/FLAG9c3e622a9 [2020-12-22 09:03:42,193 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:03:42,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 09:03:42,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a01ad0b0b/ee2c1f44b2a24966ad1ba672b85c71c8/FLAG9c3e622a9 [2020-12-22 09:03:42,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a01ad0b0b/ee2c1f44b2a24966ad1ba672b85c71c8 [2020-12-22 09:03:42,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:03:42,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:03:42,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:03:42,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:03:42,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:03:42,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:03:42" (1/1) ... [2020-12-22 09:03:42,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef176c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:42, skipping insertion in model container [2020-12-22 09:03:42,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:03:42" (1/1) ... [2020-12-22 09:03:42,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:03:42,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:03:42,861 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15191,15204] [2020-12-22 09:03:42,892 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16167,16180] [2020-12-22 09:03:43,002 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28514,28527] [2020-12-22 09:03:43,024 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29161,29174] [2020-12-22 09:03:43,050 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30545,30558] [2020-12-22 09:03:43,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:03:43,140 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:03:43,313 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15191,15204] [2020-12-22 09:03:43,337 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16167,16180] [2020-12-22 09:03:43,486 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28514,28527] [2020-12-22 09:03:43,493 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29161,29174] [2020-12-22 09:03:43,505 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30545,30558] [2020-12-22 09:03:43,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:03:43,567 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:03:43,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:43 WrapperNode [2020-12-22 09:03:43,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:03:43,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:03:43,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:03:43,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:03:43,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:43" (1/1) ... [2020-12-22 09:03:43,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:43" (1/1) ... [2020-12-22 09:03:43,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:03:43,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:03:43,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:03:43,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:03:43,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:43" (1/1) ... [2020-12-22 09:03:43,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:43" (1/1) ... [2020-12-22 09:03:43,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:43" (1/1) ... [2020-12-22 09:03:43,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:43" (1/1) ... [2020-12-22 09:03:43,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:43" (1/1) ... [2020-12-22 09:03:43,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:43" (1/1) ... [2020-12-22 09:03:43,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:43" (1/1) ... [2020-12-22 09:03:43,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:03:43,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:03:43,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:03:43,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:03:43,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:03:43,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:03:43,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:03:43,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:03:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:03:45,699 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:03:45,699 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:03:45,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:03:45 BoogieIcfgContainer [2020-12-22 09:03:45,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:03:45,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:03:45,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:03:45,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:03:45,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:03:42" (1/3) ... [2020-12-22 09:03:45,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108c2e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:03:45, skipping insertion in model container [2020-12-22 09:03:45,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:03:43" (2/3) ... [2020-12-22 09:03:45,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108c2e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:03:45, skipping insertion in model container [2020-12-22 09:03:45,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:03:45" (3/3) ... [2020-12-22 09:03:45,711 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 09:03:45,718 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:03:45,724 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 09:03:45,744 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 09:03:45,776 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:03:45,776 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:03:45,776 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:03:45,776 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:03:45,777 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:03:45,777 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:03:45,777 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:03:45,777 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:03:45,803 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states. [2020-12-22 09:03:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 09:03:45,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:45,821 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] [2020-12-22 09:03:45,822 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 09:03:45,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:45,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1455877833, now seen corresponding path program 1 times [2020-12-22 09:03:45,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:45,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090304817] [2020-12-22 09:03:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:03:46,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090304817] [2020-12-22 09:03:46,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:46,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:46,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673964649] [2020-12-22 09:03:46,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:46,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:46,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:46,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:46,466 INFO L87 Difference]: Start difference. First operand 424 states. Second operand 3 states. [2020-12-22 09:03:46,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:46,651 INFO L93 Difference]: Finished difference Result 767 states and 1341 transitions. [2020-12-22 09:03:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:46,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2020-12-22 09:03:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:46,675 INFO L225 Difference]: With dead ends: 767 [2020-12-22 09:03:46,676 INFO L226 Difference]: Without dead ends: 612 [2020-12-22 09:03:46,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:46,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-12-22 09:03:46,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 610. [2020-12-22 09:03:46,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2020-12-22 09:03:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 895 transitions. [2020-12-22 09:03:46,780 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 895 transitions. Word has length 150 [2020-12-22 09:03:46,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:46,781 INFO L481 AbstractCegarLoop]: Abstraction has 610 states and 895 transitions. [2020-12-22 09:03:46,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:46,782 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 895 transitions. [2020-12-22 09:03:46,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 09:03:46,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:46,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:03:46,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:03:46,788 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 09:03:46,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:46,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1340171657, now seen corresponding path program 1 times [2020-12-22 09:03:46,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:46,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338473813] [2020-12-22 09:03:46,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:03:47,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338473813] [2020-12-22 09:03:47,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:47,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:03:47,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600057069] [2020-12-22 09:03:47,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:03:47,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:47,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:03:47,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:47,228 INFO L87 Difference]: Start difference. First operand 610 states and 895 transitions. Second operand 4 states. [2020-12-22 09:03:47,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:47,403 INFO L93 Difference]: Finished difference Result 1784 states and 2608 transitions. [2020-12-22 09:03:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:47,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-12-22 09:03:47,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:47,412 INFO L225 Difference]: With dead ends: 1784 [2020-12-22 09:03:47,412 INFO L226 Difference]: Without dead ends: 1183 [2020-12-22 09:03:47,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:03:47,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2020-12-22 09:03:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1156. [2020-12-22 09:03:47,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2020-12-22 09:03:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1688 transitions. [2020-12-22 09:03:47,522 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1688 transitions. Word has length 150 [2020-12-22 09:03:47,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:47,525 INFO L481 AbstractCegarLoop]: Abstraction has 1156 states and 1688 transitions. [2020-12-22 09:03:47,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:03:47,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1688 transitions. [2020-12-22 09:03:47,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 09:03:47,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:47,537 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] [2020-12-22 09:03:47,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:03:47,538 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 09:03:47,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:47,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1287913931, now seen corresponding path program 1 times [2020-12-22 09:03:47,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:47,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322859349] [2020-12-22 09:03:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:03:47,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322859349] [2020-12-22 09:03:47,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:47,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:47,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649801021] [2020-12-22 09:03:47,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:47,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:47,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:47,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:47,713 INFO L87 Difference]: Start difference. First operand 1156 states and 1688 transitions. Second operand 3 states. [2020-12-22 09:03:47,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:47,860 INFO L93 Difference]: Finished difference Result 3430 states and 5002 transitions. [2020-12-22 09:03:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:47,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2020-12-22 09:03:47,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:47,883 INFO L225 Difference]: With dead ends: 3430 [2020-12-22 09:03:47,891 INFO L226 Difference]: Without dead ends: 2302 [2020-12-22 09:03:47,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2020-12-22 09:03:47,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1158. [2020-12-22 09:03:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1158 states. [2020-12-22 09:03:48,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1690 transitions. [2020-12-22 09:03:48,004 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1690 transitions. Word has length 151 [2020-12-22 09:03:48,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:48,005 INFO L481 AbstractCegarLoop]: Abstraction has 1158 states and 1690 transitions. [2020-12-22 09:03:48,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:48,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1690 transitions. [2020-12-22 09:03:48,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 09:03:48,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:48,015 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] [2020-12-22 09:03:48,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:03:48,016 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 09:03:48,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:48,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1852245384, now seen corresponding path program 1 times [2020-12-22 09:03:48,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:48,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295100108] [2020-12-22 09:03:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:03:48,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295100108] [2020-12-22 09:03:48,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:48,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:03:48,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520181447] [2020-12-22 09:03:48,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:03:48,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:48,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:03:48,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:48,351 INFO L87 Difference]: Start difference. First operand 1158 states and 1690 transitions. Second operand 4 states. [2020-12-22 09:03:48,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:48,587 INFO L93 Difference]: Finished difference Result 3356 states and 4874 transitions. [2020-12-22 09:03:48,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:48,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-12-22 09:03:48,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:48,601 INFO L225 Difference]: With dead ends: 3356 [2020-12-22 09:03:48,601 INFO L226 Difference]: Without dead ends: 2228 [2020-12-22 09:03:48,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:03:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2020-12-22 09:03:48,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2201. [2020-12-22 09:03:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2201 states. [2020-12-22 09:03:48,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3182 transitions. [2020-12-22 09:03:48,775 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3182 transitions. Word has length 152 [2020-12-22 09:03:48,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:48,775 INFO L481 AbstractCegarLoop]: Abstraction has 2201 states and 3182 transitions. [2020-12-22 09:03:48,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:03:48,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3182 transitions. [2020-12-22 09:03:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 09:03:48,780 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:48,781 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] [2020-12-22 09:03:48,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:03:48,781 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 09:03:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:48,782 INFO L82 PathProgramCache]: Analyzing trace with hash 258705708, now seen corresponding path program 1 times [2020-12-22 09:03:48,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:48,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014785261] [2020-12-22 09:03:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:03:48,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014785261] [2020-12-22 09:03:48,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:48,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:48,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025247068] [2020-12-22 09:03:48,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:48,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:48,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:48,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:48,854 INFO L87 Difference]: Start difference. First operand 2201 states and 3182 transitions. Second operand 3 states. [2020-12-22 09:03:49,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:49,182 INFO L93 Difference]: Finished difference Result 6527 states and 9426 transitions. [2020-12-22 09:03:49,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:49,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-12-22 09:03:49,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:49,214 INFO L225 Difference]: With dead ends: 6527 [2020-12-22 09:03:49,214 INFO L226 Difference]: Without dead ends: 4370 [2020-12-22 09:03:49,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:49,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2020-12-22 09:03:49,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 2205. [2020-12-22 09:03:49,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2205 states. [2020-12-22 09:03:49,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3186 transitions. [2020-12-22 09:03:49,518 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3186 transitions. Word has length 153 [2020-12-22 09:03:49,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:49,519 INFO L481 AbstractCegarLoop]: Abstraction has 2205 states and 3186 transitions. [2020-12-22 09:03:49,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:49,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3186 transitions. [2020-12-22 09:03:49,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 09:03:49,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:49,524 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] [2020-12-22 09:03:49,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:03:49,525 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 09:03:49,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:49,526 INFO L82 PathProgramCache]: Analyzing trace with hash 56905465, now seen corresponding path program 1 times [2020-12-22 09:03:49,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:49,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263880607] [2020-12-22 09:03:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:03:49,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263880607] [2020-12-22 09:03:49,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:49,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:03:49,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567130398] [2020-12-22 09:03:49,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:03:49,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:49,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:03:49,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:49,794 INFO L87 Difference]: Start difference. First operand 2205 states and 3186 transitions. Second operand 4 states. [2020-12-22 09:03:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:50,165 INFO L93 Difference]: Finished difference Result 6028 states and 8657 transitions. [2020-12-22 09:03:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:50,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-12-22 09:03:50,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:50,186 INFO L225 Difference]: With dead ends: 6028 [2020-12-22 09:03:50,186 INFO L226 Difference]: Without dead ends: 3871 [2020-12-22 09:03:50,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:03:50,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3871 states. [2020-12-22 09:03:50,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3871 to 3844. [2020-12-22 09:03:50,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3844 states. [2020-12-22 09:03:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 5467 transitions. [2020-12-22 09:03:50,496 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 5467 transitions. Word has length 154 [2020-12-22 09:03:50,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:50,498 INFO L481 AbstractCegarLoop]: Abstraction has 3844 states and 5467 transitions. [2020-12-22 09:03:50,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:03:50,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 5467 transitions. [2020-12-22 09:03:50,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 09:03:50,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:50,511 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 09:03:50,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:03:50,511 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 09:03:50,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:50,512 INFO L82 PathProgramCache]: Analyzing trace with hash 954785037, now seen corresponding path program 1 times [2020-12-22 09:03:50,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:50,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054388587] [2020-12-22 09:03:50,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:03:50,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054388587] [2020-12-22 09:03:50,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:50,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:50,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435262982] [2020-12-22 09:03:50,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:50,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:50,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:50,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:50,612 INFO L87 Difference]: Start difference. First operand 3844 states and 5467 transitions. Second operand 3 states. [2020-12-22 09:03:51,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:51,067 INFO L93 Difference]: Finished difference Result 11100 states and 15823 transitions. [2020-12-22 09:03:51,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:51,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2020-12-22 09:03:51,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:51,104 INFO L225 Difference]: With dead ends: 11100 [2020-12-22 09:03:51,105 INFO L226 Difference]: Without dead ends: 7596 [2020-12-22 09:03:51,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:51,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2020-12-22 09:03:51,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 3852. [2020-12-22 09:03:51,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3852 states. [2020-12-22 09:03:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 5475 transitions. [2020-12-22 09:03:51,515 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 5475 transitions. Word has length 155 [2020-12-22 09:03:51,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:51,516 INFO L481 AbstractCegarLoop]: Abstraction has 3852 states and 5475 transitions. [2020-12-22 09:03:51,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:51,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 5475 transitions. [2020-12-22 09:03:51,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 09:03:51,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:51,522 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] [2020-12-22 09:03:51,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:03:51,523 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 09:03:51,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:51,523 INFO L82 PathProgramCache]: Analyzing trace with hash -536571574, now seen corresponding path program 1 times [2020-12-22 09:03:51,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:51,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753346831] [2020-12-22 09:03:51,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:03:51,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753346831] [2020-12-22 09:03:51,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:51,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:03:51,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330322207] [2020-12-22 09:03:51,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:03:51,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:51,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:03:51,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:03:51,731 INFO L87 Difference]: Start difference. First operand 3852 states and 5475 transitions. Second operand 5 states. [2020-12-22 09:03:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:52,287 INFO L93 Difference]: Finished difference Result 11204 states and 15862 transitions. [2020-12-22 09:03:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:52,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-12-22 09:03:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:52,322 INFO L225 Difference]: With dead ends: 11204 [2020-12-22 09:03:52,322 INFO L226 Difference]: Without dead ends: 7440 [2020-12-22 09:03:52,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:03:52,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7440 states. [2020-12-22 09:03:52,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7440 to 7413. [2020-12-22 09:03:52,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7413 states. [2020-12-22 09:03:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7413 states to 7413 states and 10403 transitions. [2020-12-22 09:03:52,879 INFO L78 Accepts]: Start accepts. Automaton has 7413 states and 10403 transitions. Word has length 156 [2020-12-22 09:03:52,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:52,880 INFO L481 AbstractCegarLoop]: Abstraction has 7413 states and 10403 transitions. [2020-12-22 09:03:52,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:03:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand 7413 states and 10403 transitions. [2020-12-22 09:03:52,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 09:03:52,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:52,893 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] [2020-12-22 09:03:52,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:03:52,894 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 09:03:52,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:52,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1526474758, now seen corresponding path program 1 times [2020-12-22 09:03:52,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:52,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923468411] [2020-12-22 09:03:52,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:03:53,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923468411] [2020-12-22 09:03:53,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:53,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:03:53,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055017590] [2020-12-22 09:03:53,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:03:53,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:53,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:03:53,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:53,150 INFO L87 Difference]: Start difference. First operand 7413 states and 10403 transitions. Second operand 4 states. [2020-12-22 09:03:53,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:53,530 INFO L93 Difference]: Finished difference Result 13014 states and 18248 transitions. [2020-12-22 09:03:53,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:53,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-12-22 09:03:53,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:53,544 INFO L225 Difference]: With dead ends: 13014 [2020-12-22 09:03:53,545 INFO L226 Difference]: Without dead ends: 5675 [2020-12-22 09:03:53,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:03:53,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2020-12-22 09:03:54,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 5675. [2020-12-22 09:03:54,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5675 states. [2020-12-22 09:03:54,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5675 states to 5675 states and 7948 transitions. [2020-12-22 09:03:54,026 INFO L78 Accepts]: Start accepts. Automaton has 5675 states and 7948 transitions. Word has length 156 [2020-12-22 09:03:54,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:54,027 INFO L481 AbstractCegarLoop]: Abstraction has 5675 states and 7948 transitions. [2020-12-22 09:03:54,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:03:54,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5675 states and 7948 transitions. [2020-12-22 09:03:54,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 09:03:54,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:54,037 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] [2020-12-22 09:03:54,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:03:54,037 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 09:03:54,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:54,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2039955482, now seen corresponding path program 1 times [2020-12-22 09:03:54,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:54,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068855521] [2020-12-22 09:03:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:03:54,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068855521] [2020-12-22 09:03:54,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:54,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:54,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250006357] [2020-12-22 09:03:54,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:54,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:54,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:54,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:54,131 INFO L87 Difference]: Start difference. First operand 5675 states and 7948 transitions. Second operand 3 states. [2020-12-22 09:03:54,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:54,733 INFO L93 Difference]: Finished difference Result 13212 states and 18956 transitions. [2020-12-22 09:03:54,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:54,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2020-12-22 09:03:54,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:54,751 INFO L225 Difference]: With dead ends: 13212 [2020-12-22 09:03:54,751 INFO L226 Difference]: Without dead ends: 8149 [2020-12-22 09:03:54,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:54,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8149 states. [2020-12-22 09:03:55,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8149 to 7132. [2020-12-22 09:03:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7132 states. [2020-12-22 09:03:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10301 transitions. [2020-12-22 09:03:55,262 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10301 transitions. Word has length 158 [2020-12-22 09:03:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:55,262 INFO L481 AbstractCegarLoop]: Abstraction has 7132 states and 10301 transitions. [2020-12-22 09:03:55,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:55,263 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10301 transitions. [2020-12-22 09:03:55,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-12-22 09:03:55,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:55,271 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] [2020-12-22 09:03:55,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:03:55,272 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 09:03:55,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:55,272 INFO L82 PathProgramCache]: Analyzing trace with hash -941287042, now seen corresponding path program 1 times [2020-12-22 09:03:55,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:55,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30675355] [2020-12-22 09:03:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:03:55,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30675355] [2020-12-22 09:03:55,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:55,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:03:55,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416964757] [2020-12-22 09:03:55,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:03:55,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:55,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:03:55,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:55,413 INFO L87 Difference]: Start difference. First operand 7132 states and 10301 transitions. Second operand 3 states. [2020-12-22 09:03:56,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:56,196 INFO L93 Difference]: Finished difference Result 15693 states and 23187 transitions. [2020-12-22 09:03:56,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:03:56,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2020-12-22 09:03:56,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:56,221 INFO L225 Difference]: With dead ends: 15693 [2020-12-22 09:03:56,222 INFO L226 Difference]: Without dead ends: 10322 [2020-12-22 09:03:56,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:03:56,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10322 states. [2020-12-22 09:03:56,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10322 to 9350. [2020-12-22 09:03:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9350 states. [2020-12-22 09:03:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9350 states to 9350 states and 13830 transitions. [2020-12-22 09:03:56,872 INFO L78 Accepts]: Start accepts. Automaton has 9350 states and 13830 transitions. Word has length 160 [2020-12-22 09:03:56,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:56,872 INFO L481 AbstractCegarLoop]: Abstraction has 9350 states and 13830 transitions. [2020-12-22 09:03:56,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:56,873 INFO L276 IsEmpty]: Start isEmpty. Operand 9350 states and 13830 transitions. [2020-12-22 09:03:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 09:03:56,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:56,884 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 09:03:56,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:03:56,884 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 09:03:56,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:56,885 INFO L82 PathProgramCache]: Analyzing trace with hash 522123654, now seen corresponding path program 1 times [2020-12-22 09:03:56,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:56,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80590325] [2020-12-22 09:03:56,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:57,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:03:57,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80590325] [2020-12-22 09:03:57,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:57,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:03:57,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922441272] [2020-12-22 09:03:57,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:03:57,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:57,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:03:57,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:57,111 INFO L87 Difference]: Start difference. First operand 9350 states and 13830 transitions. Second operand 4 states. [2020-12-22 09:03:58,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:58,428 INFO L93 Difference]: Finished difference Result 22275 states and 34095 transitions. [2020-12-22 09:03:58,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:03:58,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-12-22 09:03:58,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:58,459 INFO L225 Difference]: With dead ends: 22275 [2020-12-22 09:03:58,459 INFO L226 Difference]: Without dead ends: 16612 [2020-12-22 09:03:58,470 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 09:03:58,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16612 states. [2020-12-22 09:03:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16612 to 16610. [2020-12-22 09:03:59,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16610 states. [2020-12-22 09:03:59,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16610 states to 16610 states and 24900 transitions. [2020-12-22 09:03:59,628 INFO L78 Accepts]: Start accepts. Automaton has 16610 states and 24900 transitions. Word has length 161 [2020-12-22 09:03:59,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:59,629 INFO L481 AbstractCegarLoop]: Abstraction has 16610 states and 24900 transitions. [2020-12-22 09:03:59,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:03:59,629 INFO L276 IsEmpty]: Start isEmpty. Operand 16610 states and 24900 transitions. [2020-12-22 09:03:59,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 09:03:59,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:59,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:03:59,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:03:59,644 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 09:03:59,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:59,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1501052056, now seen corresponding path program 1 times [2020-12-22 09:03:59,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:59,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515146436] [2020-12-22 09:03:59,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:59,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:03:59,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515146436] [2020-12-22 09:03:59,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:59,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:03:59,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759626634] [2020-12-22 09:03:59,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:03:59,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:59,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:03:59,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:03:59,820 INFO L87 Difference]: Start difference. First operand 16610 states and 24900 transitions. Second operand 4 states. [2020-12-22 09:04:01,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:01,665 INFO L93 Difference]: Finished difference Result 43376 states and 64954 transitions. [2020-12-22 09:04:01,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:01,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-12-22 09:04:01,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:01,716 INFO L225 Difference]: With dead ends: 43376 [2020-12-22 09:04:01,716 INFO L226 Difference]: Without dead ends: 26898 [2020-12-22 09:04:01,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:01,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26898 states. [2020-12-22 09:04:03,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26898 to 26875. [2020-12-22 09:04:03,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26875 states. [2020-12-22 09:04:03,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26875 states to 26875 states and 39790 transitions. [2020-12-22 09:04:03,668 INFO L78 Accepts]: Start accepts. Automaton has 26875 states and 39790 transitions. Word has length 161 [2020-12-22 09:04:03,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:03,668 INFO L481 AbstractCegarLoop]: Abstraction has 26875 states and 39790 transitions. [2020-12-22 09:04:03,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand 26875 states and 39790 transitions. [2020-12-22 09:04:03,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 09:04:03,686 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:03,686 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] [2020-12-22 09:04:03,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:04:03,687 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 09:04:03,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:03,687 INFO L82 PathProgramCache]: Analyzing trace with hash 965682877, now seen corresponding path program 1 times [2020-12-22 09:04:03,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:03,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475519913] [2020-12-22 09:04:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:03,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:04:03,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475519913] [2020-12-22 09:04:03,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:03,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:03,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865870010] [2020-12-22 09:04:03,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:03,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:03,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:03,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:03,824 INFO L87 Difference]: Start difference. First operand 26875 states and 39790 transitions. Second operand 4 states. [2020-12-22 09:04:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:05,410 INFO L93 Difference]: Finished difference Result 47913 states and 70973 transitions. [2020-12-22 09:04:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:05,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-12-22 09:04:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:05,471 INFO L225 Difference]: With dead ends: 47913 [2020-12-22 09:04:05,471 INFO L226 Difference]: Without dead ends: 26875 [2020-12-22 09:04:05,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26875 states. [2020-12-22 09:04:07,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26875 to 26875. [2020-12-22 09:04:07,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26875 states. [2020-12-22 09:04:07,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26875 states to 26875 states and 39789 transitions. [2020-12-22 09:04:07,456 INFO L78 Accepts]: Start accepts. Automaton has 26875 states and 39789 transitions. Word has length 163 [2020-12-22 09:04:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:07,456 INFO L481 AbstractCegarLoop]: Abstraction has 26875 states and 39789 transitions. [2020-12-22 09:04:07,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:07,456 INFO L276 IsEmpty]: Start isEmpty. Operand 26875 states and 39789 transitions. [2020-12-22 09:04:07,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 09:04:07,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:07,472 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] [2020-12-22 09:04:07,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:04:07,472 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 09:04:07,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:07,473 INFO L82 PathProgramCache]: Analyzing trace with hash 448440634, now seen corresponding path program 1 times [2020-12-22 09:04:07,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:07,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541642208] [2020-12-22 09:04:07,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:07,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:04:07,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541642208] [2020-12-22 09:04:07,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:07,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:07,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347459166] [2020-12-22 09:04:07,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:07,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:07,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:07,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:07,575 INFO L87 Difference]: Start difference. First operand 26875 states and 39789 transitions. Second operand 3 states. [2020-12-22 09:04:10,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:10,374 INFO L93 Difference]: Finished difference Result 67145 states and 99680 transitions. [2020-12-22 09:04:10,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:10,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-12-22 09:04:10,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:10,418 INFO L225 Difference]: With dead ends: 67145 [2020-12-22 09:04:10,418 INFO L226 Difference]: Without dead ends: 41804 [2020-12-22 09:04:10,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:10,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41804 states. [2020-12-22 09:04:13,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41804 to 41783. [2020-12-22 09:04:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41783 states. [2020-12-22 09:04:13,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41783 states to 41783 states and 61117 transitions. [2020-12-22 09:04:13,170 INFO L78 Accepts]: Start accepts. Automaton has 41783 states and 61117 transitions. Word has length 163 [2020-12-22 09:04:13,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:13,170 INFO L481 AbstractCegarLoop]: Abstraction has 41783 states and 61117 transitions. [2020-12-22 09:04:13,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:13,170 INFO L276 IsEmpty]: Start isEmpty. Operand 41783 states and 61117 transitions. [2020-12-22 09:04:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 09:04:13,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:13,194 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] [2020-12-22 09:04:13,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:04:13,195 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 09:04:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:13,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1989579749, now seen corresponding path program 1 times [2020-12-22 09:04:13,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:13,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787755323] [2020-12-22 09:04:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:04:13,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787755323] [2020-12-22 09:04:13,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:13,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:13,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409194546] [2020-12-22 09:04:13,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:13,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:13,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:13,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:13,317 INFO L87 Difference]: Start difference. First operand 41783 states and 61117 transitions. Second operand 3 states. [2020-12-22 09:04:17,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:17,790 INFO L93 Difference]: Finished difference Result 99916 states and 148123 transitions. [2020-12-22 09:04:17,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:17,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-12-22 09:04:17,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:17,889 INFO L225 Difference]: With dead ends: 99916 [2020-12-22 09:04:17,889 INFO L226 Difference]: Without dead ends: 65735 [2020-12-22 09:04:17,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:17,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65735 states. [2020-12-22 09:04:22,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65735 to 59919. [2020-12-22 09:04:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59919 states. [2020-12-22 09:04:22,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59919 states to 59919 states and 89531 transitions. [2020-12-22 09:04:22,253 INFO L78 Accepts]: Start accepts. Automaton has 59919 states and 89531 transitions. Word has length 167 [2020-12-22 09:04:22,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:22,253 INFO L481 AbstractCegarLoop]: Abstraction has 59919 states and 89531 transitions. [2020-12-22 09:04:22,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 59919 states and 89531 transitions. [2020-12-22 09:04:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 09:04:22,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:22,267 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] [2020-12-22 09:04:22,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:04:22,268 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 09:04:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:22,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1583623339, now seen corresponding path program 1 times [2020-12-22 09:04:22,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:22,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306306966] [2020-12-22 09:04:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:22,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:04:22,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306306966] [2020-12-22 09:04:22,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:22,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:22,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216577476] [2020-12-22 09:04:22,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:22,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:22,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:22,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:22,339 INFO L87 Difference]: Start difference. First operand 59919 states and 89531 transitions. Second operand 3 states. [2020-12-22 09:04:30,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:30,031 INFO L93 Difference]: Finished difference Result 171785 states and 258481 transitions. [2020-12-22 09:04:30,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:30,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2020-12-22 09:04:30,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:30,220 INFO L225 Difference]: With dead ends: 171785 [2020-12-22 09:04:30,220 INFO L226 Difference]: Without dead ends: 116507 [2020-12-22 09:04:30,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:30,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116507 states. [2020-12-22 09:04:38,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116507 to 116472. [2020-12-22 09:04:38,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116472 states. [2020-12-22 09:04:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116472 states to 116472 states and 173836 transitions. [2020-12-22 09:04:38,423 INFO L78 Accepts]: Start accepts. Automaton has 116472 states and 173836 transitions. Word has length 168 [2020-12-22 09:04:38,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:38,423 INFO L481 AbstractCegarLoop]: Abstraction has 116472 states and 173836 transitions. [2020-12-22 09:04:38,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand 116472 states and 173836 transitions. [2020-12-22 09:04:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 09:04:38,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:38,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:04:38,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:04:38,445 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 09:04:38,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:38,445 INFO L82 PathProgramCache]: Analyzing trace with hash -826427686, now seen corresponding path program 1 times [2020-12-22 09:04:38,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:38,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965908442] [2020-12-22 09:04:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:04:38,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965908442] [2020-12-22 09:04:38,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:38,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 09:04:38,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979298363] [2020-12-22 09:04:38,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 09:04:38,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:38,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 09:04:38,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:04:38,969 INFO L87 Difference]: Start difference. First operand 116472 states and 173836 transitions. Second operand 9 states. [2020-12-22 09:05:08,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:08,180 INFO L93 Difference]: Finished difference Result 467000 states and 698324 transitions. [2020-12-22 09:05:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 09:05:08,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-12-22 09:05:08,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:08,906 INFO L225 Difference]: With dead ends: 467000 [2020-12-22 09:05:08,906 INFO L226 Difference]: Without dead ends: 358158 [2020-12-22 09:05:09,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2020-12-22 09:05:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358158 states. [2020-12-22 09:05:27,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358158 to 194144. [2020-12-22 09:05:27,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194144 states. [2020-12-22 09:05:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194144 states to 194144 states and 285902 transitions. [2020-12-22 09:05:27,526 INFO L78 Accepts]: Start accepts. Automaton has 194144 states and 285902 transitions. Word has length 168 [2020-12-22 09:05:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:27,527 INFO L481 AbstractCegarLoop]: Abstraction has 194144 states and 285902 transitions. [2020-12-22 09:05:27,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 09:05:27,527 INFO L276 IsEmpty]: Start isEmpty. Operand 194144 states and 285902 transitions. [2020-12-22 09:05:27,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 09:05:27,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:27,579 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] [2020-12-22 09:05:27,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 09:05:27,579 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 09:05:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:27,580 INFO L82 PathProgramCache]: Analyzing trace with hash 880184438, now seen corresponding path program 1 times [2020-12-22 09:05:27,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:27,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265439587] [2020-12-22 09:05:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:05:27,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265439587] [2020-12-22 09:05:27,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:27,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:27,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658868522] [2020-12-22 09:05:27,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:27,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:27,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:27,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:27,766 INFO L87 Difference]: Start difference. First operand 194144 states and 285902 transitions. Second operand 4 states. [2020-12-22 09:05:42,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:42,865 INFO L93 Difference]: Finished difference Result 365986 states and 538994 transitions. [2020-12-22 09:05:42,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:42,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-12-22 09:05:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:43,344 INFO L225 Difference]: With dead ends: 365986 [2020-12-22 09:05:43,344 INFO L226 Difference]: Without dead ends: 171900 [2020-12-22 09:05:43,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:05:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171900 states.