/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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:20:35,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:20:35,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:20:35,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:20:35,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:20:35,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:20:35,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:20:35,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:20:35,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:20:35,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:20:35,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:20:35,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:20:35,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:20:35,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:20:35,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:20:35,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:20:35,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:20:35,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:20:35,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:20:35,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:20:35,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:20:35,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:20:35,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:20:35,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:20:35,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:20:36,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:20:36,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:20:36,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:20:36,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:20:36,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:20:36,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:20:36,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:20:36,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:20:36,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:20:36,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:20:36,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:20:36,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:20:36,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:20:36,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:20:36,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:20:36,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:20:36,078 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:20:36,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:20:36,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:20:36,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:20:36,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:20:36,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:20:36,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:20:36,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:20:36,082 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:20:36,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:20:36,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:20:36,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:20:36,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:20:36,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:20:36,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:20:36,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:20:36,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:20:36,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:20:36,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:20:36,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:20:36,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:20:36,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:20:36,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:20:36,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:20:36,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:20:36,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:20:36,580 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:20:36,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:20:36,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa6bb193/68fc4fc21dd44adc9ba2a0d7a9f3200f/FLAG8de198077 [2020-12-22 08:20:37,662 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:20:37,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:20:37,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa6bb193/68fc4fc21dd44adc9ba2a0d7a9f3200f/FLAG8de198077 [2020-12-22 08:20:37,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fa6bb193/68fc4fc21dd44adc9ba2a0d7a9f3200f [2020-12-22 08:20:37,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:20:37,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:20:37,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:20:37,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:20:37,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:20:37,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:20:37" (1/1) ... [2020-12-22 08:20:37,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd8b06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:37, skipping insertion in model container [2020-12-22 08:20:37,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:20:37" (1/1) ... [2020-12-22 08:20:37,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:20:37,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:20:38,239 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[6780,6793] [2020-12-22 08:20:38,268 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[10881,10894] [2020-12-22 08:20:38,336 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[17911,17924] [2020-12-22 08:20:38,402 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24343,24356] [2020-12-22 08:20:38,501 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43318,43331] [2020-12-22 08:20:38,646 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71100,71113] [2020-12-22 08:20:38,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:20:39,012 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:20:39,078 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[6780,6793] [2020-12-22 08:20:39,099 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[10881,10894] [2020-12-22 08:20:39,137 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[17911,17924] [2020-12-22 08:20:39,162 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24343,24356] [2020-12-22 08:20:39,213 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[43318,43331] [2020-12-22 08:20:39,299 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_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71100,71113] [2020-12-22 08:20:39,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:20:39,474 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:20:39,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:39 WrapperNode [2020-12-22 08:20:39,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:20:39,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:20:39,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:20:39,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:20:39,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:39" (1/1) ... [2020-12-22 08:20:39,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:39" (1/1) ... [2020-12-22 08:20:39,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:20:39,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:20:39,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:20:39,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:20:39,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:39" (1/1) ... [2020-12-22 08:20:39,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:39" (1/1) ... [2020-12-22 08:20:39,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:39" (1/1) ... [2020-12-22 08:20:39,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:39" (1/1) ... [2020-12-22 08:20:39,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:39" (1/1) ... [2020-12-22 08:20:39,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:39" (1/1) ... [2020-12-22 08:20:39,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:39" (1/1) ... [2020-12-22 08:20:39,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:20:39,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:20:39,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:20:39,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:20:39,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:20:40,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:20:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:20:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:20:40,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:20:43,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:20:43,922 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:20:43,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:20:43 BoogieIcfgContainer [2020-12-22 08:20:43,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:20:43,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:20:43,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:20:43,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:20:43,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:20:37" (1/3) ... [2020-12-22 08:20:43,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d56b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:20:43, skipping insertion in model container [2020-12-22 08:20:43,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:39" (2/3) ... [2020-12-22 08:20:43,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d56b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:20:43, skipping insertion in model container [2020-12-22 08:20:43,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:20:43" (3/3) ... [2020-12-22 08:20:43,935 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-12-22 08:20:43,942 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:20:43,949 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 08:20:43,967 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 08:20:44,016 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:20:44,017 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:20:44,017 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:20:44,017 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:20:44,017 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:20:44,017 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:20:44,017 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:20:44,017 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:20:44,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states. [2020-12-22 08:20:44,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:20:44,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:44,102 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] [2020-12-22 08:20:44,103 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:44,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:44,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1061871762, now seen corresponding path program 1 times [2020-12-22 08:20:44,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:44,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617256560] [2020-12-22 08:20:44,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:44,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617256560] [2020-12-22 08:20:44,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:44,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:20:44,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788559569] [2020-12-22 08:20:44,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:20:44,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:44,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:20:44,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:20:44,558 INFO L87 Difference]: Start difference. First operand 1254 states. Second operand 5 states. [2020-12-22 08:20:46,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:46,752 INFO L93 Difference]: Finished difference Result 2467 states and 4323 transitions. [2020-12-22 08:20:46,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:20:46,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-22 08:20:46,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:46,807 INFO L225 Difference]: With dead ends: 2467 [2020-12-22 08:20:46,807 INFO L226 Difference]: Without dead ends: 1550 [2020-12-22 08:20:46,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:20:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2020-12-22 08:20:47,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1544. [2020-12-22 08:20:47,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-12-22 08:20:47,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2086 transitions. [2020-12-22 08:20:47,012 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2086 transitions. Word has length 51 [2020-12-22 08:20:47,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:47,013 INFO L481 AbstractCegarLoop]: Abstraction has 1544 states and 2086 transitions. [2020-12-22 08:20:47,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:20:47,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2086 transitions. [2020-12-22 08:20:47,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:20:47,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:47,018 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] [2020-12-22 08:20:47,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:20:47,019 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:47,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1625759521, now seen corresponding path program 1 times [2020-12-22 08:20:47,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:47,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893329054] [2020-12-22 08:20:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:47,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:47,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893329054] [2020-12-22 08:20:47,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:47,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:20:47,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130269353] [2020-12-22 08:20:47,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:20:47,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:47,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:20:47,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:20:47,238 INFO L87 Difference]: Start difference. First operand 1544 states and 2086 transitions. Second operand 6 states. [2020-12-22 08:20:48,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:48,855 INFO L93 Difference]: Finished difference Result 3551 states and 4876 transitions. [2020-12-22 08:20:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:20:48,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 08:20:48,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:48,871 INFO L225 Difference]: With dead ends: 3551 [2020-12-22 08:20:48,871 INFO L226 Difference]: Without dead ends: 2571 [2020-12-22 08:20:48,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:20:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2020-12-22 08:20:48,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2551. [2020-12-22 08:20:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2551 states. [2020-12-22 08:20:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2551 states to 2551 states and 3518 transitions. [2020-12-22 08:20:49,006 INFO L78 Accepts]: Start accepts. Automaton has 2551 states and 3518 transitions. Word has length 52 [2020-12-22 08:20:49,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:49,006 INFO L481 AbstractCegarLoop]: Abstraction has 2551 states and 3518 transitions. [2020-12-22 08:20:49,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:20:49,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2551 states and 3518 transitions. [2020-12-22 08:20:49,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:20:49,011 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:49,011 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] [2020-12-22 08:20:49,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:20:49,012 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:49,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:49,013 INFO L82 PathProgramCache]: Analyzing trace with hash 299183278, now seen corresponding path program 1 times [2020-12-22 08:20:49,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:49,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406987099] [2020-12-22 08:20:49,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:49,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406987099] [2020-12-22 08:20:49,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:49,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:20:49,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165029541] [2020-12-22 08:20:49,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:20:49,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:49,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:20:49,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:20:49,172 INFO L87 Difference]: Start difference. First operand 2551 states and 3518 transitions. Second operand 6 states. [2020-12-22 08:20:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:50,738 INFO L93 Difference]: Finished difference Result 6041 states and 8439 transitions. [2020-12-22 08:20:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:20:50,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 08:20:50,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:50,762 INFO L225 Difference]: With dead ends: 6041 [2020-12-22 08:20:50,763 INFO L226 Difference]: Without dead ends: 4327 [2020-12-22 08:20:50,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:20:50,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4327 states. [2020-12-22 08:20:50,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4327 to 4311. [2020-12-22 08:20:50,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2020-12-22 08:20:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 5967 transitions. [2020-12-22 08:20:51,010 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 5967 transitions. Word has length 52 [2020-12-22 08:20:51,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:51,011 INFO L481 AbstractCegarLoop]: Abstraction has 4311 states and 5967 transitions. [2020-12-22 08:20:51,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:20:51,011 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 5967 transitions. [2020-12-22 08:20:51,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:20:51,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:51,015 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] [2020-12-22 08:20:51,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:20:51,016 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:51,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:51,016 INFO L82 PathProgramCache]: Analyzing trace with hash 448762372, now seen corresponding path program 1 times [2020-12-22 08:20:51,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:51,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789440504] [2020-12-22 08:20:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:51,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789440504] [2020-12-22 08:20:51,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:51,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:20:51,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507692971] [2020-12-22 08:20:51,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:20:51,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:51,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:20:51,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:20:51,274 INFO L87 Difference]: Start difference. First operand 4311 states and 5967 transitions. Second operand 9 states. [2020-12-22 08:20:55,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:55,142 INFO L93 Difference]: Finished difference Result 12180 states and 17663 transitions. [2020-12-22 08:20:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:20:55,143 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-12-22 08:20:55,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:55,198 INFO L225 Difference]: With dead ends: 12180 [2020-12-22 08:20:55,199 INFO L226 Difference]: Without dead ends: 11062 [2020-12-22 08:20:55,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:20:55,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11062 states. [2020-12-22 08:20:55,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11062 to 4311. [2020-12-22 08:20:55,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2020-12-22 08:20:55,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 5966 transitions. [2020-12-22 08:20:55,603 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 5966 transitions. Word has length 53 [2020-12-22 08:20:55,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:55,604 INFO L481 AbstractCegarLoop]: Abstraction has 4311 states and 5966 transitions. [2020-12-22 08:20:55,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:20:55,604 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 5966 transitions. [2020-12-22 08:20:55,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:20:55,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:55,608 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] [2020-12-22 08:20:55,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:20:55,609 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:55,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:55,609 INFO L82 PathProgramCache]: Analyzing trace with hash 303472925, now seen corresponding path program 1 times [2020-12-22 08:20:55,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:55,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561541550] [2020-12-22 08:20:55,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:55,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561541550] [2020-12-22 08:20:55,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:55,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:20:55,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870547233] [2020-12-22 08:20:55,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:20:55,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:55,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:20:55,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:20:55,837 INFO L87 Difference]: Start difference. First operand 4311 states and 5966 transitions. Second operand 9 states. [2020-12-22 08:20:59,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:59,909 INFO L93 Difference]: Finished difference Result 8356 states and 12144 transitions. [2020-12-22 08:20:59,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:20:59,909 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-12-22 08:20:59,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:59,950 INFO L225 Difference]: With dead ends: 8356 [2020-12-22 08:20:59,950 INFO L226 Difference]: Without dead ends: 8351 [2020-12-22 08:20:59,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:20:59,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8351 states. [2020-12-22 08:21:00,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8351 to 4311. [2020-12-22 08:21:00,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2020-12-22 08:21:00,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 5965 transitions. [2020-12-22 08:21:00,313 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 5965 transitions. Word has length 53 [2020-12-22 08:21:00,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:00,314 INFO L481 AbstractCegarLoop]: Abstraction has 4311 states and 5965 transitions. [2020-12-22 08:21:00,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:21:00,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 5965 transitions. [2020-12-22 08:21:00,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:21:00,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:00,318 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] [2020-12-22 08:21:00,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:21:00,319 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:00,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:00,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1162103691, now seen corresponding path program 1 times [2020-12-22 08:21:00,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:00,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581990120] [2020-12-22 08:21:00,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:00,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:00,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581990120] [2020-12-22 08:21:00,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:00,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:21:00,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545184100] [2020-12-22 08:21:00,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:21:00,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:00,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:21:00,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:21:00,473 INFO L87 Difference]: Start difference. First operand 4311 states and 5965 transitions. Second operand 8 states. [2020-12-22 08:21:03,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:03,865 INFO L93 Difference]: Finished difference Result 9383 states and 13819 transitions. [2020-12-22 08:21:03,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:21:03,866 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-12-22 08:21:03,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:03,885 INFO L225 Difference]: With dead ends: 9383 [2020-12-22 08:21:03,886 INFO L226 Difference]: Without dead ends: 8057 [2020-12-22 08:21:03,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:21:03,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8057 states. [2020-12-22 08:21:04,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8057 to 4311. [2020-12-22 08:21:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2020-12-22 08:21:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 5964 transitions. [2020-12-22 08:21:04,268 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 5964 transitions. Word has length 53 [2020-12-22 08:21:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:04,268 INFO L481 AbstractCegarLoop]: Abstraction has 4311 states and 5964 transitions. [2020-12-22 08:21:04,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:21:04,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 5964 transitions. [2020-12-22 08:21:04,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:21:04,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:04,273 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] [2020-12-22 08:21:04,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:21:04,274 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:04,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:04,274 INFO L82 PathProgramCache]: Analyzing trace with hash -482264145, now seen corresponding path program 1 times [2020-12-22 08:21:04,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:04,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143986300] [2020-12-22 08:21:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:04,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143986300] [2020-12-22 08:21:04,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:04,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:04,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930728758] [2020-12-22 08:21:04,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:04,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:04,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:04,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:04,339 INFO L87 Difference]: Start difference. First operand 4311 states and 5964 transitions. Second operand 3 states. [2020-12-22 08:21:04,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:04,812 INFO L93 Difference]: Finished difference Result 6293 states and 9027 transitions. [2020-12-22 08:21:04,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:04,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 08:21:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:04,825 INFO L225 Difference]: With dead ends: 6293 [2020-12-22 08:21:04,826 INFO L226 Difference]: Without dead ends: 4779 [2020-12-22 08:21:04,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:04,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2020-12-22 08:21:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4443. [2020-12-22 08:21:05,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4443 states. [2020-12-22 08:21:05,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4443 states to 4443 states and 6187 transitions. [2020-12-22 08:21:05,322 INFO L78 Accepts]: Start accepts. Automaton has 4443 states and 6187 transitions. Word has length 54 [2020-12-22 08:21:05,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:05,324 INFO L481 AbstractCegarLoop]: Abstraction has 4443 states and 6187 transitions. [2020-12-22 08:21:05,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:05,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4443 states and 6187 transitions. [2020-12-22 08:21:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:21:05,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:05,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:21:05,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:21:05,329 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:05,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:05,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1622556323, now seen corresponding path program 1 times [2020-12-22 08:21:05,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:05,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127523260] [2020-12-22 08:21:05,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:05,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127523260] [2020-12-22 08:21:05,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:05,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:05,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614823411] [2020-12-22 08:21:05,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:05,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:05,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:05,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:05,437 INFO L87 Difference]: Start difference. First operand 4443 states and 6187 transitions. Second operand 3 states. [2020-12-22 08:21:05,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:05,907 INFO L93 Difference]: Finished difference Result 7352 states and 10685 transitions. [2020-12-22 08:21:05,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:05,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 08:21:05,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:05,921 INFO L225 Difference]: With dead ends: 7352 [2020-12-22 08:21:05,922 INFO L226 Difference]: Without dead ends: 5407 [2020-12-22 08:21:05,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:05,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5407 states. [2020-12-22 08:21:06,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5407 to 4905. [2020-12-22 08:21:06,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4905 states. [2020-12-22 08:21:06,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4905 states to 4905 states and 6926 transitions. [2020-12-22 08:21:06,464 INFO L78 Accepts]: Start accepts. Automaton has 4905 states and 6926 transitions. Word has length 54 [2020-12-22 08:21:06,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:06,465 INFO L481 AbstractCegarLoop]: Abstraction has 4905 states and 6926 transitions. [2020-12-22 08:21:06,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:06,465 INFO L276 IsEmpty]: Start isEmpty. Operand 4905 states and 6926 transitions. [2020-12-22 08:21:06,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:21:06,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:06,469 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] [2020-12-22 08:21:06,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:21:06,469 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:06,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:06,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1612308197, now seen corresponding path program 1 times [2020-12-22 08:21:06,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:06,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633143069] [2020-12-22 08:21:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:06,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633143069] [2020-12-22 08:21:06,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:06,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:06,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456175516] [2020-12-22 08:21:06,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:06,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:06,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:06,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:06,522 INFO L87 Difference]: Start difference. First operand 4905 states and 6926 transitions. Second operand 3 states. [2020-12-22 08:21:07,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:07,375 INFO L93 Difference]: Finished difference Result 10625 states and 15357 transitions. [2020-12-22 08:21:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:07,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 08:21:07,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:07,391 INFO L225 Difference]: With dead ends: 10625 [2020-12-22 08:21:07,391 INFO L226 Difference]: Without dead ends: 7107 [2020-12-22 08:21:07,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:07,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7107 states. [2020-12-22 08:21:08,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7107 to 7101. [2020-12-22 08:21:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7101 states. [2020-12-22 08:21:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7101 states to 7101 states and 10021 transitions. [2020-12-22 08:21:08,066 INFO L78 Accepts]: Start accepts. Automaton has 7101 states and 10021 transitions. Word has length 54 [2020-12-22 08:21:08,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:08,066 INFO L481 AbstractCegarLoop]: Abstraction has 7101 states and 10021 transitions. [2020-12-22 08:21:08,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:08,066 INFO L276 IsEmpty]: Start isEmpty. Operand 7101 states and 10021 transitions. [2020-12-22 08:21:08,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:21:08,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:08,071 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] [2020-12-22 08:21:08,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:21:08,071 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:08,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:08,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1623263409, now seen corresponding path program 1 times [2020-12-22 08:21:08,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:08,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634367280] [2020-12-22 08:21:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:08,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634367280] [2020-12-22 08:21:08,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:08,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:08,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941673875] [2020-12-22 08:21:08,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:08,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:08,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:08,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:08,123 INFO L87 Difference]: Start difference. First operand 7101 states and 10021 transitions. Second operand 3 states. [2020-12-22 08:21:09,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:09,210 INFO L93 Difference]: Finished difference Result 15272 states and 22171 transitions. [2020-12-22 08:21:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:09,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:21:09,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:09,225 INFO L225 Difference]: With dead ends: 15272 [2020-12-22 08:21:09,226 INFO L226 Difference]: Without dead ends: 9607 [2020-12-22 08:21:09,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:09,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9607 states. [2020-12-22 08:21:09,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9607 to 7799. [2020-12-22 08:21:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7799 states. [2020-12-22 08:21:10,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7799 states to 7799 states and 11227 transitions. [2020-12-22 08:21:10,024 INFO L78 Accepts]: Start accepts. Automaton has 7799 states and 11227 transitions. Word has length 55 [2020-12-22 08:21:10,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:10,024 INFO L481 AbstractCegarLoop]: Abstraction has 7799 states and 11227 transitions. [2020-12-22 08:21:10,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 7799 states and 11227 transitions. [2020-12-22 08:21:10,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:21:10,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:10,028 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] [2020-12-22 08:21:10,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:21:10,028 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:10,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:10,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1493102210, now seen corresponding path program 1 times [2020-12-22 08:21:10,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:10,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141541044] [2020-12-22 08:21:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:10,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:10,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141541044] [2020-12-22 08:21:10,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:10,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:10,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405973071] [2020-12-22 08:21:10,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:10,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:10,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:10,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:10,079 INFO L87 Difference]: Start difference. First operand 7799 states and 11227 transitions. Second operand 3 states. [2020-12-22 08:21:11,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:11,232 INFO L93 Difference]: Finished difference Result 18417 states and 27144 transitions. [2020-12-22 08:21:11,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:11,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:21:11,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:11,244 INFO L225 Difference]: With dead ends: 18417 [2020-12-22 08:21:11,244 INFO L226 Difference]: Without dead ends: 11644 [2020-12-22 08:21:11,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11644 states. [2020-12-22 08:21:12,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11644 to 9174. [2020-12-22 08:21:12,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9174 states. [2020-12-22 08:21:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9174 states to 9174 states and 13435 transitions. [2020-12-22 08:21:12,181 INFO L78 Accepts]: Start accepts. Automaton has 9174 states and 13435 transitions. Word has length 55 [2020-12-22 08:21:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:12,181 INFO L481 AbstractCegarLoop]: Abstraction has 9174 states and 13435 transitions. [2020-12-22 08:21:12,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 9174 states and 13435 transitions. [2020-12-22 08:21:12,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:21:12,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:12,184 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] [2020-12-22 08:21:12,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:21:12,184 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:12,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:12,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1419432604, now seen corresponding path program 1 times [2020-12-22 08:21:12,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:12,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137876625] [2020-12-22 08:21:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:12,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:12,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137876625] [2020-12-22 08:21:12,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:12,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:12,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461013458] [2020-12-22 08:21:12,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:12,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:12,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:12,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:12,225 INFO L87 Difference]: Start difference. First operand 9174 states and 13435 transitions. Second operand 3 states. [2020-12-22 08:21:13,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:13,441 INFO L93 Difference]: Finished difference Result 19377 states and 28605 transitions. [2020-12-22 08:21:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:13,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:21:13,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:13,453 INFO L225 Difference]: With dead ends: 19377 [2020-12-22 08:21:13,453 INFO L226 Difference]: Without dead ends: 10570 [2020-12-22 08:21:13,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:13,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10570 states. [2020-12-22 08:21:14,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10570 to 8412. [2020-12-22 08:21:14,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8412 states. [2020-12-22 08:21:14,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8412 states to 8412 states and 12401 transitions. [2020-12-22 08:21:14,312 INFO L78 Accepts]: Start accepts. Automaton has 8412 states and 12401 transitions. Word has length 55 [2020-12-22 08:21:14,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:14,313 INFO L481 AbstractCegarLoop]: Abstraction has 8412 states and 12401 transitions. [2020-12-22 08:21:14,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:14,313 INFO L276 IsEmpty]: Start isEmpty. Operand 8412 states and 12401 transitions. [2020-12-22 08:21:14,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:21:14,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:14,314 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] [2020-12-22 08:21:14,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:21:14,315 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:14,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:14,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1871407914, now seen corresponding path program 1 times [2020-12-22 08:21:14,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:14,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101379356] [2020-12-22 08:21:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:15,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101379356] [2020-12-22 08:21:15,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:15,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:21:15,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993635395] [2020-12-22 08:21:15,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:21:15,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:15,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:21:15,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:21:15,122 INFO L87 Difference]: Start difference. First operand 8412 states and 12401 transitions. Second operand 19 states. [2020-12-22 08:21:15,375 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-12-22 08:21:15,983 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 08:21:16,350 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 08:21:16,611 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 08:21:16,939 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:21:17,148 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-22 08:21:17,411 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-22 08:21:18,194 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:21:19,272 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 08:21:22,194 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-12-22 08:21:22,876 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-22 08:21:23,694 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:21:28,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:28,117 INFO L93 Difference]: Finished difference Result 31767 states and 47487 transitions. [2020-12-22 08:21:28,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:21:28,118 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-12-22 08:21:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:28,154 INFO L225 Difference]: With dead ends: 31767 [2020-12-22 08:21:28,154 INFO L226 Difference]: Without dead ends: 31763 [2020-12-22 08:21:28,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=302, Invalid=1338, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:21:28,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31763 states. [2020-12-22 08:21:29,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31763 to 8424. [2020-12-22 08:21:29,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8424 states. [2020-12-22 08:21:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8424 states to 8424 states and 12418 transitions. [2020-12-22 08:21:29,508 INFO L78 Accepts]: Start accepts. Automaton has 8424 states and 12418 transitions. Word has length 56 [2020-12-22 08:21:29,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:29,508 INFO L481 AbstractCegarLoop]: Abstraction has 8424 states and 12418 transitions. [2020-12-22 08:21:29,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:21:29,508 INFO L276 IsEmpty]: Start isEmpty. Operand 8424 states and 12418 transitions. [2020-12-22 08:21:29,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:21:29,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:29,510 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] [2020-12-22 08:21:29,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:21:29,510 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:29,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:29,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1094868748, now seen corresponding path program 1 times [2020-12-22 08:21:29,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:29,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370386789] [2020-12-22 08:21:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:30,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:30,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370386789] [2020-12-22 08:21:30,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:30,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:21:30,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756727967] [2020-12-22 08:21:30,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:21:30,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:30,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:21:30,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:21:30,212 INFO L87 Difference]: Start difference. First operand 8424 states and 12418 transitions. Second operand 19 states. [2020-12-22 08:21:30,442 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-22 08:21:31,240 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:21:32,091 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:21:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:40,039 INFO L93 Difference]: Finished difference Result 22713 states and 33871 transitions. [2020-12-22 08:21:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:21:40,040 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-12-22 08:21:40,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:40,061 INFO L225 Difference]: With dead ends: 22713 [2020-12-22 08:21:40,061 INFO L226 Difference]: Without dead ends: 22709 [2020-12-22 08:21:40,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 08:21:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22709 states. [2020-12-22 08:21:41,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22709 to 8424. [2020-12-22 08:21:41,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8424 states. [2020-12-22 08:21:41,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8424 states to 8424 states and 12417 transitions. [2020-12-22 08:21:41,351 INFO L78 Accepts]: Start accepts. Automaton has 8424 states and 12417 transitions. Word has length 56 [2020-12-22 08:21:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:41,352 INFO L481 AbstractCegarLoop]: Abstraction has 8424 states and 12417 transitions. [2020-12-22 08:21:41,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:21:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 8424 states and 12417 transitions. [2020-12-22 08:21:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:21:41,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:41,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:21:41,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:21:41,354 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:41,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:41,355 INFO L82 PathProgramCache]: Analyzing trace with hash 557999134, now seen corresponding path program 1 times [2020-12-22 08:21:41,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:41,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51303906] [2020-12-22 08:21:41,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:42,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51303906] [2020-12-22 08:21:42,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:42,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:21:42,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735028613] [2020-12-22 08:21:42,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:21:42,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:42,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:21:42,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:21:42,104 INFO L87 Difference]: Start difference. First operand 8424 states and 12417 transitions. Second operand 19 states. [2020-12-22 08:21:42,419 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-12-22 08:21:43,001 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-12-22 08:21:43,388 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:21:43,683 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-12-22 08:21:44,041 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:21:44,267 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:21:44,579 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:21:44,841 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-12-22 08:21:45,102 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-12-22 08:21:45,479 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-12-22 08:21:45,692 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:21:45,963 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-12-22 08:21:46,186 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-22 08:21:50,258 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 08:21:53,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:53,950 INFO L93 Difference]: Finished difference Result 22181 states and 33115 transitions. [2020-12-22 08:21:53,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:21:53,952 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-12-22 08:21:53,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:53,978 INFO L225 Difference]: With dead ends: 22181 [2020-12-22 08:21:53,978 INFO L226 Difference]: Without dead ends: 22175 [2020-12-22 08:21:53,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=335, Invalid=1147, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 08:21:54,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22175 states. [2020-12-22 08:21:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22175 to 8424. [2020-12-22 08:21:55,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8424 states. [2020-12-22 08:21:55,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8424 states to 8424 states and 12416 transitions. [2020-12-22 08:21:55,323 INFO L78 Accepts]: Start accepts. Automaton has 8424 states and 12416 transitions. Word has length 56 [2020-12-22 08:21:55,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:55,323 INFO L481 AbstractCegarLoop]: Abstraction has 8424 states and 12416 transitions. [2020-12-22 08:21:55,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:21:55,324 INFO L276 IsEmpty]: Start isEmpty. Operand 8424 states and 12416 transitions. [2020-12-22 08:21:55,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:21:55,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:55,325 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] [2020-12-22 08:21:55,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:21:55,325 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:55,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:55,326 INFO L82 PathProgramCache]: Analyzing trace with hash 513328539, now seen corresponding path program 1 times [2020-12-22 08:21:55,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:55,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726516725] [2020-12-22 08:21:55,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:56,026 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-12-22 08:21:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:21:56,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726516725] [2020-12-22 08:21:56,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:56,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:21:56,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69440229] [2020-12-22 08:21:56,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:21:56,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:56,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:21:56,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:21:56,569 INFO L87 Difference]: Start difference. First operand 8424 states and 12416 transitions. Second operand 16 states. [2020-12-22 08:21:56,847 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-12-22 08:21:57,009 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-12-22 08:21:57,239 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-12-22 08:21:57,471 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-12-22 08:21:57,846 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-12-22 08:21:58,163 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-12-22 08:21:58,577 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-12-22 08:21:59,095 WARN L197 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-12-22 08:21:59,550 WARN L197 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 68 [2020-12-22 08:22:00,081 WARN L197 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-12-22 08:22:00,545 WARN L197 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-12-22 08:22:00,915 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-12-22 08:22:01,414 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-12-22 08:22:02,377 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-22 08:22:02,914 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-12-22 08:22:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:10,804 INFO L93 Difference]: Finished difference Result 24325 states and 36113 transitions. [2020-12-22 08:22:10,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:22:10,805 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-12-22 08:22:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:10,833 INFO L225 Difference]: With dead ends: 24325 [2020-12-22 08:22:10,833 INFO L226 Difference]: Without dead ends: 24127 [2020-12-22 08:22:10,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2020-12-22 08:22:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24127 states. [2020-12-22 08:22:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24127 to 8412. [2020-12-22 08:22:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8412 states. [2020-12-22 08:22:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8412 states to 8412 states and 12403 transitions. [2020-12-22 08:22:12,567 INFO L78 Accepts]: Start accepts. Automaton has 8412 states and 12403 transitions. Word has length 56 [2020-12-22 08:22:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:12,567 INFO L481 AbstractCegarLoop]: Abstraction has 8412 states and 12403 transitions. [2020-12-22 08:22:12,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:22:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand 8412 states and 12403 transitions. [2020-12-22 08:22:12,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:22:12,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:12,569 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] [2020-12-22 08:22:12,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:22:12,570 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:12,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:12,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1785706246, now seen corresponding path program 1 times [2020-12-22 08:22:12,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:12,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017323179] [2020-12-22 08:22:12,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:22:13,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017323179] [2020-12-22 08:22:13,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:13,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:22:13,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932706082] [2020-12-22 08:22:13,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:22:13,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:13,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:22:13,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:22:13,187 INFO L87 Difference]: Start difference. First operand 8412 states and 12403 transitions. Second operand 14 states. [2020-12-22 08:22:13,602 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-12-22 08:22:14,292 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:22:20,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:20,308 INFO L93 Difference]: Finished difference Result 18998 states and 28124 transitions. [2020-12-22 08:22:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:22:20,309 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-12-22 08:22:20,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:20,329 INFO L225 Difference]: With dead ends: 18998 [2020-12-22 08:22:20,329 INFO L226 Difference]: Without dead ends: 18994 [2020-12-22 08:22:20,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2020-12-22 08:22:20,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18994 states. [2020-12-22 08:22:22,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18994 to 8408. [2020-12-22 08:22:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8408 states. [2020-12-22 08:22:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8408 states to 8408 states and 12399 transitions. [2020-12-22 08:22:22,053 INFO L78 Accepts]: Start accepts. Automaton has 8408 states and 12399 transitions. Word has length 57 [2020-12-22 08:22:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:22,053 INFO L481 AbstractCegarLoop]: Abstraction has 8408 states and 12399 transitions. [2020-12-22 08:22:22,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:22:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 8408 states and 12399 transitions. [2020-12-22 08:22:22,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:22:22,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:22,055 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] [2020-12-22 08:22:22,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:22:22,055 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:22,056 INFO L82 PathProgramCache]: Analyzing trace with hash 247888215, now seen corresponding path program 1 times [2020-12-22 08:22:22,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:22,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141256930] [2020-12-22 08:22:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:22:23,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141256930] [2020-12-22 08:22:23,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:23,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:22:23,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635136464] [2020-12-22 08:22:23,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:22:23,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:23,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:22:23,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:22:23,019 INFO L87 Difference]: Start difference. First operand 8408 states and 12399 transitions. Second operand 15 states. [2020-12-22 08:22:23,161 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 08:22:23,447 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-22 08:22:23,603 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-12-22 08:22:23,756 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-22 08:22:24,024 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:22:24,343 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:22:24,603 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:22:24,916 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-12-22 08:22:25,254 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:22:25,601 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-12-22 08:22:25,906 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-12-22 08:22:26,544 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-22 08:22:27,028 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-22 08:22:28,061 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-22 08:22:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:33,386 INFO L93 Difference]: Finished difference Result 17768 states and 26268 transitions. [2020-12-22 08:22:33,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:22:33,387 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-12-22 08:22:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:33,407 INFO L225 Difference]: With dead ends: 17768 [2020-12-22 08:22:33,407 INFO L226 Difference]: Without dead ends: 17535 [2020-12-22 08:22:33,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=229, Invalid=641, Unknown=0, NotChecked=0, Total=870 [2020-12-22 08:22:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17535 states. [2020-12-22 08:22:35,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17535 to 8399. [2020-12-22 08:22:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8399 states. [2020-12-22 08:22:35,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 12387 transitions. [2020-12-22 08:22:35,196 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 12387 transitions. Word has length 57 [2020-12-22 08:22:35,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:35,196 INFO L481 AbstractCegarLoop]: Abstraction has 8399 states and 12387 transitions. [2020-12-22 08:22:35,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 08:22:35,197 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 12387 transitions. [2020-12-22 08:22:35,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:22:35,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:35,199 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] [2020-12-22 08:22:35,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:22:35,199 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:35,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:35,200 INFO L82 PathProgramCache]: Analyzing trace with hash -101338621, now seen corresponding path program 1 times [2020-12-22 08:22:35,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:35,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496801823] [2020-12-22 08:22:35,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:35,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:22:35,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496801823] [2020-12-22 08:22:35,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:35,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:22:35,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429759014] [2020-12-22 08:22:35,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:22:35,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:35,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:22:35,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:22:35,261 INFO L87 Difference]: Start difference. First operand 8399 states and 12387 transitions. Second operand 3 states. [2020-12-22 08:22:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:38,833 INFO L93 Difference]: Finished difference Result 21622 states and 32051 transitions. [2020-12-22 08:22:38,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:22:38,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 08:22:38,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:38,848 INFO L225 Difference]: With dead ends: 21622 [2020-12-22 08:22:38,848 INFO L226 Difference]: Without dead ends: 13990 [2020-12-22 08:22:38,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:22:38,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13990 states. [2020-12-22 08:22:41,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13990 to 13988. [2020-12-22 08:22:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13988 states. [2020-12-22 08:22:41,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13988 states to 13988 states and 20373 transitions. [2020-12-22 08:22:41,928 INFO L78 Accepts]: Start accepts. Automaton has 13988 states and 20373 transitions. Word has length 63 [2020-12-22 08:22:41,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:41,928 INFO L481 AbstractCegarLoop]: Abstraction has 13988 states and 20373 transitions. [2020-12-22 08:22:41,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:22:41,928 INFO L276 IsEmpty]: Start isEmpty. Operand 13988 states and 20373 transitions. [2020-12-22 08:22:41,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:22:41,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:41,932 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] [2020-12-22 08:22:41,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:22:41,933 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:41,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:41,933 INFO L82 PathProgramCache]: Analyzing trace with hash 838129574, now seen corresponding path program 1 times [2020-12-22 08:22:41,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:41,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122235419] [2020-12-22 08:22:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:22:42,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122235419] [2020-12-22 08:22:42,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:42,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:22:42,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851277795] [2020-12-22 08:22:42,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:22:42,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:42,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:22:42,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:22:42,116 INFO L87 Difference]: Start difference. First operand 13988 states and 20373 transitions. Second operand 5 states. [2020-12-22 08:22:44,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:44,824 INFO L93 Difference]: Finished difference Result 23582 states and 34381 transitions. [2020-12-22 08:22:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:22:44,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 08:22:44,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:44,836 INFO L225 Difference]: With dead ends: 23582 [2020-12-22 08:22:44,837 INFO L226 Difference]: Without dead ends: 10348 [2020-12-22 08:22:44,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:22:44,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2020-12-22 08:22:47,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 10344. [2020-12-22 08:22:47,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10344 states. [2020-12-22 08:22:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10344 states to 10344 states and 14898 transitions. [2020-12-22 08:22:47,535 INFO L78 Accepts]: Start accepts. Automaton has 10344 states and 14898 transitions. Word has length 64 [2020-12-22 08:22:47,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:47,535 INFO L481 AbstractCegarLoop]: Abstraction has 10344 states and 14898 transitions. [2020-12-22 08:22:47,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:22:47,536 INFO L276 IsEmpty]: Start isEmpty. Operand 10344 states and 14898 transitions. [2020-12-22 08:22:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:22:47,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:47,538 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] [2020-12-22 08:22:47,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:22:47,539 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:47,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:47,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1809556404, now seen corresponding path program 1 times [2020-12-22 08:22:47,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:47,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139172650] [2020-12-22 08:22:47,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:22:47,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139172650] [2020-12-22 08:22:47,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:47,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:22:47,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820430612] [2020-12-22 08:22:47,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:22:47,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:47,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:22:47,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:22:47,636 INFO L87 Difference]: Start difference. First operand 10344 states and 14898 transitions. Second operand 3 states. [2020-12-22 08:22:52,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:52,301 INFO L93 Difference]: Finished difference Result 27740 states and 40151 transitions. [2020-12-22 08:22:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:22:52,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 08:22:52,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:52,323 INFO L225 Difference]: With dead ends: 27740 [2020-12-22 08:22:52,323 INFO L226 Difference]: Without dead ends: 18127 [2020-12-22 08:22:52,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:22:52,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18127 states. [2020-12-22 08:22:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18127 to 17015. [2020-12-22 08:22:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17015 states. [2020-12-22 08:22:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17015 states to 17015 states and 24434 transitions. [2020-12-22 08:22:56,689 INFO L78 Accepts]: Start accepts. Automaton has 17015 states and 24434 transitions. Word has length 66 [2020-12-22 08:22:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:56,689 INFO L481 AbstractCegarLoop]: Abstraction has 17015 states and 24434 transitions. [2020-12-22 08:22:56,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:22:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 17015 states and 24434 transitions. [2020-12-22 08:22:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:22:56,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:56,691 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] [2020-12-22 08:22:56,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:22:56,692 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:56,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:56,692 INFO L82 PathProgramCache]: Analyzing trace with hash 827517135, now seen corresponding path program 1 times [2020-12-22 08:22:56,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:56,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522227278] [2020-12-22 08:22:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:22:56,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522227278] [2020-12-22 08:22:56,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:56,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:22:56,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711779707] [2020-12-22 08:22:56,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:22:56,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:56,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:22:56,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:22:56,749 INFO L87 Difference]: Start difference. First operand 17015 states and 24434 transitions. Second operand 3 states. [2020-12-22 08:23:05,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:05,103 INFO L93 Difference]: Finished difference Result 46409 states and 66685 transitions. [2020-12-22 08:23:05,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:23:05,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 08:23:05,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:05,139 INFO L225 Difference]: With dead ends: 46409 [2020-12-22 08:23:05,139 INFO L226 Difference]: Without dead ends: 30125 [2020-12-22 08:23:05,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:23:05,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30125 states. [2020-12-22 08:23:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30125 to 28029. [2020-12-22 08:23:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28029 states. [2020-12-22 08:23:12,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28029 states to 28029 states and 39944 transitions. [2020-12-22 08:23:12,769 INFO L78 Accepts]: Start accepts. Automaton has 28029 states and 39944 transitions. Word has length 66 [2020-12-22 08:23:12,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:12,769 INFO L481 AbstractCegarLoop]: Abstraction has 28029 states and 39944 transitions. [2020-12-22 08:23:12,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:23:12,769 INFO L276 IsEmpty]: Start isEmpty. Operand 28029 states and 39944 transitions. [2020-12-22 08:23:12,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:23:12,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:12,772 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] [2020-12-22 08:23:12,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:23:12,772 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:12,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:12,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1051118849, now seen corresponding path program 1 times [2020-12-22 08:23:12,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:12,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804948203] [2020-12-22 08:23:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:12,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804948203] [2020-12-22 08:23:12,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:12,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:23:12,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983925886] [2020-12-22 08:23:12,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:23:12,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:12,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:23:12,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:23:12,935 INFO L87 Difference]: Start difference. First operand 28029 states and 39944 transitions. Second operand 6 states. [2020-12-22 08:23:27,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:27,092 INFO L93 Difference]: Finished difference Result 49669 states and 69490 transitions. [2020-12-22 08:23:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:23:27,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-22 08:23:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:27,150 INFO L225 Difference]: With dead ends: 49669 [2020-12-22 08:23:27,150 INFO L226 Difference]: Without dead ends: 49667 [2020-12-22 08:23:27,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:23:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49667 states. [2020-12-22 08:23:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49667 to 29328. [2020-12-22 08:23:35,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29328 states. [2020-12-22 08:23:35,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29328 states to 29328 states and 41243 transitions. [2020-12-22 08:23:35,811 INFO L78 Accepts]: Start accepts. Automaton has 29328 states and 41243 transitions. Word has length 68 [2020-12-22 08:23:35,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:35,811 INFO L481 AbstractCegarLoop]: Abstraction has 29328 states and 41243 transitions. [2020-12-22 08:23:35,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:23:35,812 INFO L276 IsEmpty]: Start isEmpty. Operand 29328 states and 41243 transitions. [2020-12-22 08:23:35,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:23:35,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:35,813 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] [2020-12-22 08:23:35,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:23:35,814 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:35,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:35,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1654492608, now seen corresponding path program 1 times [2020-12-22 08:23:35,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:35,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805012464] [2020-12-22 08:23:35,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:23:35,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805012464] [2020-12-22 08:23:35,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:35,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:23:35,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763596162] [2020-12-22 08:23:35,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:23:35,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:35,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:23:35,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:23:35,886 INFO L87 Difference]: Start difference. First operand 29328 states and 41243 transitions. Second operand 3 states. [2020-12-22 08:23:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:51,201 INFO L93 Difference]: Finished difference Result 79267 states and 110913 transitions. [2020-12-22 08:23:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:23:51,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:23:51,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:51,266 INFO L225 Difference]: With dead ends: 79267 [2020-12-22 08:23:51,266 INFO L226 Difference]: Without dead ends: 50614 [2020-12-22 08:23:51,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:23:51,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50614 states. [2020-12-22 08:24:05,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50614 to 49746. [2020-12-22 08:24:05,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49746 states. [2020-12-22 08:24:05,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49746 states to 49746 states and 68351 transitions. [2020-12-22 08:24:05,895 INFO L78 Accepts]: Start accepts. Automaton has 49746 states and 68351 transitions. Word has length 69 [2020-12-22 08:24:05,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:24:05,895 INFO L481 AbstractCegarLoop]: Abstraction has 49746 states and 68351 transitions. [2020-12-22 08:24:05,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:24:05,896 INFO L276 IsEmpty]: Start isEmpty. Operand 49746 states and 68351 transitions. [2020-12-22 08:24:05,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:24:05,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:24:05,900 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] [2020-12-22 08:24:05,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:24:05,900 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:24:05,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:24:05,900 INFO L82 PathProgramCache]: Analyzing trace with hash 324913683, now seen corresponding path program 1 times [2020-12-22 08:24:05,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:24:05,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130358230] [2020-12-22 08:24:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:24:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:24:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:24:06,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130358230] [2020-12-22 08:24:06,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:24:06,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:24:06,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796152110] [2020-12-22 08:24:06,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:24:06,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:24:06,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:24:06,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:24:06,087 INFO L87 Difference]: Start difference. First operand 49746 states and 68351 transitions. Second operand 6 states. [2020-12-22 08:24:34,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:24:34,407 INFO L93 Difference]: Finished difference Result 118014 states and 161499 transitions. [2020-12-22 08:24:34,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:24:34,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 08:24:34,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:24:34,529 INFO L225 Difference]: With dead ends: 118014 [2020-12-22 08:24:34,529 INFO L226 Difference]: Without dead ends: 93196 [2020-12-22 08:24:34,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:24:34,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93196 states.