/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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:27:01,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:27:01,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:27:01,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:27:01,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:27:01,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:27:01,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:27:01,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:27:01,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:27:01,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:27:01,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:27:01,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:27:01,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:27:01,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:27:01,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:27:01,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:27:01,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:27:01,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:27:01,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:27:01,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:27:01,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:27:01,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:27:01,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:27:01,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:27:01,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:27:01,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:27:01,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:27:01,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:27:01,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:27:01,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:27:01,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:27:01,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:27:01,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:27:01,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:27:01,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:27:01,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:27:01,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:27:01,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:27:01,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:27:01,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:27:01,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:27:01,989 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:27:01,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:27:01,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:27:01,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:27:01,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:27:01,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:27:01,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:27:01,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:27:01,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:27:01,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:27:01,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:27:01,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:27:01,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:27:01,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:27:01,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:27:01,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:27:01,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:27:01,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:27:01,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:27:01,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:27:01,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:27:01,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:27:02,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:27:02,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:27:02,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:27:02,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:27:02,514 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:27:02,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:27:02,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2eeceb12/d11a8156dcf142d0b7d5fe7aaa3dd677/FLAG150797b1f [2020-12-22 08:27:03,548 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:27:03,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:27:03,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2eeceb12/d11a8156dcf142d0b7d5fe7aaa3dd677/FLAG150797b1f [2020-12-22 08:27:04,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2eeceb12/d11a8156dcf142d0b7d5fe7aaa3dd677 [2020-12-22 08:27:04,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:27:04,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:27:04,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:27:04,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:27:04,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:27:04,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:27:04" (1/1) ... [2020-12-22 08:27:04,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a0aed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:04, skipping insertion in model container [2020-12-22 08:27:04,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:27:04" (1/1) ... [2020-12-22 08:27:04,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:27:04,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:27:04,709 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11494,11507] [2020-12-22 08:27:04,749 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18212,18225] [2020-12-22 08:27:04,764 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20410,20423] [2020-12-22 08:27:04,772 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21487,21500] [2020-12-22 08:27:04,792 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24840,24853] [2020-12-22 08:27:04,800 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25920,25933] [2020-12-22 08:27:04,825 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28149,28162] [2020-12-22 08:27:05,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:27:05,329 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:27:05,398 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11494,11507] [2020-12-22 08:27:05,417 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18212,18225] [2020-12-22 08:27:05,426 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20410,20423] [2020-12-22 08:27:05,433 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21487,21500] [2020-12-22 08:27:05,444 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[24840,24853] [2020-12-22 08:27:05,449 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25920,25933] [2020-12-22 08:27:05,456 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.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28149,28162] [2020-12-22 08:27:05,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:27:05,903 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:27:05,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:05 WrapperNode [2020-12-22 08:27:05,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:27:05,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:27:05,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:27:05,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:27:05,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:05" (1/1) ... [2020-12-22 08:27:05,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:05" (1/1) ... [2020-12-22 08:27:06,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:27:06,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:27:06,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:27:06,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:27:06,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:05" (1/1) ... [2020-12-22 08:27:06,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:05" (1/1) ... [2020-12-22 08:27:06,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:05" (1/1) ... [2020-12-22 08:27:06,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:05" (1/1) ... [2020-12-22 08:27:06,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:05" (1/1) ... [2020-12-22 08:27:06,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:05" (1/1) ... [2020-12-22 08:27:06,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:05" (1/1) ... [2020-12-22 08:27:06,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:27:06,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:27:06,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:27:06,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:27:06,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:05" (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 08:27:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:27:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:27:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:27:06,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:27:10,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:27:10,715 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:27:10,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:27:10 BoogieIcfgContainer [2020-12-22 08:27:10,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:27:10,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:27:10,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:27:10,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:27:10,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:27:04" (1/3) ... [2020-12-22 08:27:10,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29770793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:27:10, skipping insertion in model container [2020-12-22 08:27:10,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:05" (2/3) ... [2020-12-22 08:27:10,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29770793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:27:10, skipping insertion in model container [2020-12-22 08:27:10,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:27:10" (3/3) ... [2020-12-22 08:27:10,728 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:27:10,735 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:27:10,741 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 08:27:10,761 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 08:27:10,795 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:27:10,796 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:27:10,796 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:27:10,796 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:27:10,796 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:27:10,796 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:27:10,796 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:27:10,797 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:27:10,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states. [2020-12-22 08:27:10,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:27:10,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:10,858 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 08:27:10,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:10,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1027637325, now seen corresponding path program 1 times [2020-12-22 08:27:10,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:10,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299167105] [2020-12-22 08:27:10,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:11,480 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 08:27:11,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299167105] [2020-12-22 08:27:11,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:11,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:27:11,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693099908] [2020-12-22 08:27:11,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:27:11,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:11,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:27:11,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:27:11,516 INFO L87 Difference]: Start difference. First operand 1102 states. Second operand 5 states. [2020-12-22 08:27:12,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:12,660 INFO L93 Difference]: Finished difference Result 1790 states and 3275 transitions. [2020-12-22 08:27:12,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:12,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-22 08:27:12,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:12,698 INFO L225 Difference]: With dead ends: 1790 [2020-12-22 08:27:12,699 INFO L226 Difference]: Without dead ends: 987 [2020-12-22 08:27:12,709 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 08:27:12,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-12-22 08:27:12,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 979. [2020-12-22 08:27:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 979 states. [2020-12-22 08:27:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1310 transitions. [2020-12-22 08:27:12,948 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1310 transitions. Word has length 63 [2020-12-22 08:27:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:12,949 INFO L481 AbstractCegarLoop]: Abstraction has 979 states and 1310 transitions. [2020-12-22 08:27:12,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:27:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1310 transitions. [2020-12-22 08:27:12,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:27:12,957 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:12,957 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 08:27:12,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:27:12,958 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:12,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:12,959 INFO L82 PathProgramCache]: Analyzing trace with hash 517550277, now seen corresponding path program 1 times [2020-12-22 08:27:12,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:12,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145669673] [2020-12-22 08:27:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:13,167 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 08:27:13,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145669673] [2020-12-22 08:27:13,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:13,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:27:13,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277690886] [2020-12-22 08:27:13,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:27:13,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:13,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:27:13,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:27:13,175 INFO L87 Difference]: Start difference. First operand 979 states and 1310 transitions. Second operand 3 states. [2020-12-22 08:27:13,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:13,277 INFO L93 Difference]: Finished difference Result 1722 states and 2352 transitions. [2020-12-22 08:27:13,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:27:13,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 08:27:13,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:13,293 INFO L225 Difference]: With dead ends: 1722 [2020-12-22 08:27:13,294 INFO L226 Difference]: Without dead ends: 1402 [2020-12-22 08:27:13,301 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 08:27:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2020-12-22 08:27:13,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1393. [2020-12-22 08:27:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2020-12-22 08:27:13,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1857 transitions. [2020-12-22 08:27:13,409 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1857 transitions. Word has length 64 [2020-12-22 08:27:13,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:13,410 INFO L481 AbstractCegarLoop]: Abstraction has 1393 states and 1857 transitions. [2020-12-22 08:27:13,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:27:13,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1857 transitions. [2020-12-22 08:27:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:27:13,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:13,415 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 08:27:13,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:27:13,418 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:13,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:13,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1546123801, now seen corresponding path program 1 times [2020-12-22 08:27:13,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:13,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367952393] [2020-12-22 08:27:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:13,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:27:13,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367952393] [2020-12-22 08:27:13,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:13,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:27:13,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927416211] [2020-12-22 08:27:13,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:27:13,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:13,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:27:13,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:27:13,610 INFO L87 Difference]: Start difference. First operand 1393 states and 1857 transitions. Second operand 3 states. [2020-12-22 08:27:13,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:13,808 INFO L93 Difference]: Finished difference Result 2185 states and 3029 transitions. [2020-12-22 08:27:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:27:13,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 08:27:13,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:13,828 INFO L225 Difference]: With dead ends: 2185 [2020-12-22 08:27:13,828 INFO L226 Difference]: Without dead ends: 1800 [2020-12-22 08:27:13,831 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 08:27:13,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2020-12-22 08:27:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1792. [2020-12-22 08:27:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1792 states. [2020-12-22 08:27:13,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2436 transitions. [2020-12-22 08:27:13,905 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2436 transitions. Word has length 64 [2020-12-22 08:27:13,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:13,906 INFO L481 AbstractCegarLoop]: Abstraction has 1792 states and 2436 transitions. [2020-12-22 08:27:13,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:27:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2436 transitions. [2020-12-22 08:27:13,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:27:13,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:13,911 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 08:27:13,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:27:13,913 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:13,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:13,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1930220714, now seen corresponding path program 1 times [2020-12-22 08:27:13,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:13,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758217136] [2020-12-22 08:27:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:27:14,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758217136] [2020-12-22 08:27:14,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:14,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:27:14,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670621649] [2020-12-22 08:27:14,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:27:14,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:14,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:27:14,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:27:14,083 INFO L87 Difference]: Start difference. First operand 1792 states and 2436 transitions. Second operand 3 states. [2020-12-22 08:27:14,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:14,232 INFO L93 Difference]: Finished difference Result 3258 states and 4588 transitions. [2020-12-22 08:27:14,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:27:14,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 08:27:14,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:14,246 INFO L225 Difference]: With dead ends: 3258 [2020-12-22 08:27:14,247 INFO L226 Difference]: Without dead ends: 2458 [2020-12-22 08:27:14,255 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 08:27:14,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2020-12-22 08:27:14,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2450. [2020-12-22 08:27:14,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2450 states. [2020-12-22 08:27:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3380 transitions. [2020-12-22 08:27:14,386 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3380 transitions. Word has length 64 [2020-12-22 08:27:14,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:14,388 INFO L481 AbstractCegarLoop]: Abstraction has 2450 states and 3380 transitions. [2020-12-22 08:27:14,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:27:14,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3380 transitions. [2020-12-22 08:27:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:27:14,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:14,395 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 08:27:14,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:27:14,395 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:14,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:14,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1847708861, now seen corresponding path program 1 times [2020-12-22 08:27:14,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:14,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192853846] [2020-12-22 08:27:14,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:14,565 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 08:27:14,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192853846] [2020-12-22 08:27:14,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:14,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:27:14,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997226492] [2020-12-22 08:27:14,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:27:14,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:14,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:27:14,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:27:14,571 INFO L87 Difference]: Start difference. First operand 2450 states and 3380 transitions. Second operand 6 states. [2020-12-22 08:27:15,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:15,520 INFO L93 Difference]: Finished difference Result 6471 states and 9173 transitions. [2020-12-22 08:27:15,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:15,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-12-22 08:27:15,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:15,541 INFO L225 Difference]: With dead ends: 6471 [2020-12-22 08:27:15,541 INFO L226 Difference]: Without dead ends: 4346 [2020-12-22 08:27:15,546 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 08:27:15,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2020-12-22 08:27:15,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 4330. [2020-12-22 08:27:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4330 states. [2020-12-22 08:27:15,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 6154 transitions. [2020-12-22 08:27:15,779 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 6154 transitions. Word has length 64 [2020-12-22 08:27:15,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:15,780 INFO L481 AbstractCegarLoop]: Abstraction has 4330 states and 6154 transitions. [2020-12-22 08:27:15,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:27:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 6154 transitions. [2020-12-22 08:27:15,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:27:15,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:15,785 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] [2020-12-22 08:27:15,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:27:15,786 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:15,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:15,786 INFO L82 PathProgramCache]: Analyzing trace with hash -289517497, now seen corresponding path program 1 times [2020-12-22 08:27:15,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:15,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30292953] [2020-12-22 08:27:15,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:15,879 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 08:27:15,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30292953] [2020-12-22 08:27:15,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:15,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:27:15,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88032697] [2020-12-22 08:27:15,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:27:15,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:15,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:27:15,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:27:15,888 INFO L87 Difference]: Start difference. First operand 4330 states and 6154 transitions. Second operand 3 states. [2020-12-22 08:27:16,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:16,260 INFO L93 Difference]: Finished difference Result 9555 states and 13751 transitions. [2020-12-22 08:27:16,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:27:16,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 08:27:16,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:16,293 INFO L225 Difference]: With dead ends: 9555 [2020-12-22 08:27:16,293 INFO L226 Difference]: Without dead ends: 6267 [2020-12-22 08:27:16,300 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 08:27:16,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6267 states. [2020-12-22 08:27:16,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6267 to 6235. [2020-12-22 08:27:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6235 states. [2020-12-22 08:27:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6235 states to 6235 states and 8813 transitions. [2020-12-22 08:27:16,748 INFO L78 Accepts]: Start accepts. Automaton has 6235 states and 8813 transitions. Word has length 65 [2020-12-22 08:27:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:16,750 INFO L481 AbstractCegarLoop]: Abstraction has 6235 states and 8813 transitions. [2020-12-22 08:27:16,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:27:16,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6235 states and 8813 transitions. [2020-12-22 08:27:16,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:27:16,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:16,759 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] [2020-12-22 08:27:16,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:27:16,760 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:16,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:16,760 INFO L82 PathProgramCache]: Analyzing trace with hash 951250508, now seen corresponding path program 1 times [2020-12-22 08:27:16,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:16,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142737306] [2020-12-22 08:27:16,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:16,892 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 08:27:16,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142737306] [2020-12-22 08:27:16,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:16,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:27:16,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169355901] [2020-12-22 08:27:16,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:27:16,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:16,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:27:16,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:27:16,895 INFO L87 Difference]: Start difference. First operand 6235 states and 8813 transitions. Second operand 6 states. [2020-12-22 08:27:18,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:18,154 INFO L93 Difference]: Finished difference Result 17637 states and 25242 transitions. [2020-12-22 08:27:18,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:18,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 08:27:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:18,229 INFO L225 Difference]: With dead ends: 17637 [2020-12-22 08:27:18,229 INFO L226 Difference]: Without dead ends: 11892 [2020-12-22 08:27:18,240 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 08:27:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11892 states. [2020-12-22 08:27:18,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11892 to 11816. [2020-12-22 08:27:18,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11816 states. [2020-12-22 08:27:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11816 states to 11816 states and 16889 transitions. [2020-12-22 08:27:19,003 INFO L78 Accepts]: Start accepts. Automaton has 11816 states and 16889 transitions. Word has length 65 [2020-12-22 08:27:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:19,003 INFO L481 AbstractCegarLoop]: Abstraction has 11816 states and 16889 transitions. [2020-12-22 08:27:19,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:27:19,003 INFO L276 IsEmpty]: Start isEmpty. Operand 11816 states and 16889 transitions. [2020-12-22 08:27:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:27:19,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:19,016 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 08:27:19,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:27:19,016 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:19,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:19,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1633906490, now seen corresponding path program 1 times [2020-12-22 08:27:19,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:19,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47400139] [2020-12-22 08:27:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:19,142 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 08:27:19,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47400139] [2020-12-22 08:27:19,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:19,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:27:19,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248099329] [2020-12-22 08:27:19,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:27:19,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:19,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:27:19,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:27:19,145 INFO L87 Difference]: Start difference. First operand 11816 states and 16889 transitions. Second operand 6 states. [2020-12-22 08:27:21,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:21,035 INFO L93 Difference]: Finished difference Result 35857 states and 51508 transitions. [2020-12-22 08:27:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:21,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 08:27:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:21,095 INFO L225 Difference]: With dead ends: 35857 [2020-12-22 08:27:21,095 INFO L226 Difference]: Without dead ends: 24531 [2020-12-22 08:27:21,114 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 08:27:21,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24531 states. [2020-12-22 08:27:22,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24531 to 24365. [2020-12-22 08:27:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24365 states. [2020-12-22 08:27:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24365 states to 24365 states and 34881 transitions. [2020-12-22 08:27:22,305 INFO L78 Accepts]: Start accepts. Automaton has 24365 states and 34881 transitions. Word has length 66 [2020-12-22 08:27:22,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:22,305 INFO L481 AbstractCegarLoop]: Abstraction has 24365 states and 34881 transitions. [2020-12-22 08:27:22,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:27:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 24365 states and 34881 transitions. [2020-12-22 08:27:22,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:27:22,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:22,316 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] [2020-12-22 08:27:22,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:27:22,317 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:22,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:22,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1449474395, now seen corresponding path program 1 times [2020-12-22 08:27:22,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:22,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242642938] [2020-12-22 08:27:22,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:22,429 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 08:27:22,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242642938] [2020-12-22 08:27:22,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:22,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:27:22,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55033100] [2020-12-22 08:27:22,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:27:22,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:22,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:27:22,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:27:22,432 INFO L87 Difference]: Start difference. First operand 24365 states and 34881 transitions. Second operand 7 states. [2020-12-22 08:27:27,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:27,167 INFO L93 Difference]: Finished difference Result 90657 states and 130796 transitions. [2020-12-22 08:27:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:27:27,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-12-22 08:27:27,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:27,381 INFO L225 Difference]: With dead ends: 90657 [2020-12-22 08:27:27,382 INFO L226 Difference]: Without dead ends: 78157 [2020-12-22 08:27:27,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:27:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78157 states. [2020-12-22 08:27:29,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78157 to 24393. [2020-12-22 08:27:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24393 states. [2020-12-22 08:27:30,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24393 states to 24393 states and 34917 transitions. [2020-12-22 08:27:30,055 INFO L78 Accepts]: Start accepts. Automaton has 24393 states and 34917 transitions. Word has length 67 [2020-12-22 08:27:30,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:30,056 INFO L481 AbstractCegarLoop]: Abstraction has 24393 states and 34917 transitions. [2020-12-22 08:27:30,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:27:30,056 INFO L276 IsEmpty]: Start isEmpty. Operand 24393 states and 34917 transitions. [2020-12-22 08:27:30,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:27:30,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:30,085 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] [2020-12-22 08:27:30,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:27:30,085 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:30,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:30,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1861181409, now seen corresponding path program 1 times [2020-12-22 08:27:30,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:30,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794926623] [2020-12-22 08:27:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:30,217 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 08:27:30,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794926623] [2020-12-22 08:27:30,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:30,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:27:30,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221896944] [2020-12-22 08:27:30,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:27:30,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:30,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:27:30,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:27:30,220 INFO L87 Difference]: Start difference. First operand 24393 states and 34917 transitions. Second operand 7 states. [2020-12-22 08:27:30,554 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-22 08:27:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:37,206 INFO L93 Difference]: Finished difference Result 101266 states and 146117 transitions. [2020-12-22 08:27:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:27:37,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-12-22 08:27:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:37,378 INFO L225 Difference]: With dead ends: 101266 [2020-12-22 08:27:37,378 INFO L226 Difference]: Without dead ends: 89446 [2020-12-22 08:27:37,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:27:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89446 states. [2020-12-22 08:27:40,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89446 to 24481. [2020-12-22 08:27:40,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24481 states. [2020-12-22 08:27:40,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24481 states to 24481 states and 35038 transitions. [2020-12-22 08:27:40,261 INFO L78 Accepts]: Start accepts. Automaton has 24481 states and 35038 transitions. Word has length 67 [2020-12-22 08:27:40,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:40,261 INFO L481 AbstractCegarLoop]: Abstraction has 24481 states and 35038 transitions. [2020-12-22 08:27:40,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:27:40,261 INFO L276 IsEmpty]: Start isEmpty. Operand 24481 states and 35038 transitions. [2020-12-22 08:27:40,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:27:40,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:40,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:27:40,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:27:40,271 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:40,272 INFO L82 PathProgramCache]: Analyzing trace with hash 2008504829, now seen corresponding path program 1 times [2020-12-22 08:27:40,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:40,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228291137] [2020-12-22 08:27:40,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:40,559 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 08:27:40,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228291137] [2020-12-22 08:27:40,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:40,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:27:40,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732428275] [2020-12-22 08:27:40,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:27:40,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:40,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:27:40,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:27:40,562 INFO L87 Difference]: Start difference. First operand 24481 states and 35038 transitions. Second operand 7 states. [2020-12-22 08:27:52,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:52,068 INFO L93 Difference]: Finished difference Result 144997 states and 209763 transitions. [2020-12-22 08:27:52,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:27:52,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-12-22 08:27:52,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:52,507 INFO L225 Difference]: With dead ends: 144997 [2020-12-22 08:27:52,507 INFO L226 Difference]: Without dead ends: 131072 [2020-12-22 08:27:52,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:27:52,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131072 states. [2020-12-22 08:27:55,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131072 to 24549. [2020-12-22 08:27:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24549 states. [2020-12-22 08:27:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24549 states to 24549 states and 35126 transitions. [2020-12-22 08:27:55,900 INFO L78 Accepts]: Start accepts. Automaton has 24549 states and 35126 transitions. Word has length 67 [2020-12-22 08:27:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:55,900 INFO L481 AbstractCegarLoop]: Abstraction has 24549 states and 35126 transitions. [2020-12-22 08:27:55,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:27:55,900 INFO L276 IsEmpty]: Start isEmpty. Operand 24549 states and 35126 transitions. [2020-12-22 08:27:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:27:56,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:56,013 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] [2020-12-22 08:27:56,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:27:56,014 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:56,015 INFO L82 PathProgramCache]: Analyzing trace with hash 296799215, now seen corresponding path program 1 times [2020-12-22 08:27:56,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:56,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395682837] [2020-12-22 08:27:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:56,129 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 08:27:56,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395682837] [2020-12-22 08:27:56,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:56,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:27:56,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725794858] [2020-12-22 08:27:56,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:27:56,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:56,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:27:56,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:27:56,131 INFO L87 Difference]: Start difference. First operand 24549 states and 35126 transitions. Second operand 7 states. [2020-12-22 08:28:08,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:08,228 INFO L93 Difference]: Finished difference Result 116536 states and 168299 transitions. [2020-12-22 08:28:08,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:28:08,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-12-22 08:28:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:08,537 INFO L225 Difference]: With dead ends: 116536 [2020-12-22 08:28:08,538 INFO L226 Difference]: Without dead ends: 104406 [2020-12-22 08:28:08,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:28:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104406 states. [2020-12-22 08:28:11,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104406 to 24678. [2020-12-22 08:28:11,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24678 states. [2020-12-22 08:28:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24678 states to 24678 states and 35297 transitions. [2020-12-22 08:28:11,954 INFO L78 Accepts]: Start accepts. Automaton has 24678 states and 35297 transitions. Word has length 67 [2020-12-22 08:28:11,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:11,954 INFO L481 AbstractCegarLoop]: Abstraction has 24678 states and 35297 transitions. [2020-12-22 08:28:11,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:28:11,954 INFO L276 IsEmpty]: Start isEmpty. Operand 24678 states and 35297 transitions. [2020-12-22 08:28:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:28:11,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:11,964 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 08:28:11,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:28:11,964 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:11,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:11,965 INFO L82 PathProgramCache]: Analyzing trace with hash -766843701, now seen corresponding path program 1 times [2020-12-22 08:28:11,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:11,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184123742] [2020-12-22 08:28:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:12,164 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 08:28:12,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184123742] [2020-12-22 08:28:12,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:12,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:28:12,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446610994] [2020-12-22 08:28:12,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:28:12,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:12,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:28:12,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:28:12,167 INFO L87 Difference]: Start difference. First operand 24678 states and 35297 transitions. Second operand 9 states. [2020-12-22 08:28:21,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:21,944 INFO L93 Difference]: Finished difference Result 82123 states and 119482 transitions. [2020-12-22 08:28:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:28:21,945 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-12-22 08:28:21,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:22,009 INFO L225 Difference]: With dead ends: 82123 [2020-12-22 08:28:22,009 INFO L226 Difference]: Without dead ends: 62076 [2020-12-22 08:28:22,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:28:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62076 states. [2020-12-22 08:28:25,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62076 to 24669. [2020-12-22 08:28:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24669 states. [2020-12-22 08:28:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24669 states to 24669 states and 35279 transitions. [2020-12-22 08:28:25,391 INFO L78 Accepts]: Start accepts. Automaton has 24669 states and 35279 transitions. Word has length 68 [2020-12-22 08:28:25,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:25,392 INFO L481 AbstractCegarLoop]: Abstraction has 24669 states and 35279 transitions. [2020-12-22 08:28:25,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:28:25,392 INFO L276 IsEmpty]: Start isEmpty. Operand 24669 states and 35279 transitions. [2020-12-22 08:28:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:28:25,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:25,399 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 08:28:25,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:28:25,399 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:25,400 INFO L82 PathProgramCache]: Analyzing trace with hash -646757943, now seen corresponding path program 1 times [2020-12-22 08:28:25,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:25,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753934714] [2020-12-22 08:28:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:25,561 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 08:28:25,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753934714] [2020-12-22 08:28:25,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:25,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:28:25,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071954467] [2020-12-22 08:28:25,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:28:25,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:25,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:28:25,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:28:25,563 INFO L87 Difference]: Start difference. First operand 24669 states and 35279 transitions. Second operand 9 states. [2020-12-22 08:28:41,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:41,351 INFO L93 Difference]: Finished difference Result 122224 states and 178761 transitions. [2020-12-22 08:28:41,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:28:41,352 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-12-22 08:28:41,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:41,491 INFO L225 Difference]: With dead ends: 122224 [2020-12-22 08:28:41,491 INFO L226 Difference]: Without dead ends: 102139 [2020-12-22 08:28:41,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2020-12-22 08:28:41,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102139 states. [2020-12-22 08:28:45,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102139 to 24641. [2020-12-22 08:28:45,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24641 states. [2020-12-22 08:28:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24641 states to 24641 states and 35235 transitions. [2020-12-22 08:28:45,576 INFO L78 Accepts]: Start accepts. Automaton has 24641 states and 35235 transitions. Word has length 68 [2020-12-22 08:28:45,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:45,577 INFO L481 AbstractCegarLoop]: Abstraction has 24641 states and 35235 transitions. [2020-12-22 08:28:45,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:28:45,577 INFO L276 IsEmpty]: Start isEmpty. Operand 24641 states and 35235 transitions. [2020-12-22 08:28:45,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:28:45,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:45,583 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 08:28:45,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:28:45,583 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:45,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:45,584 INFO L82 PathProgramCache]: Analyzing trace with hash 850267752, now seen corresponding path program 1 times [2020-12-22 08:28:45,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:45,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287933600] [2020-12-22 08:28:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:45,677 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 08:28:45,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287933600] [2020-12-22 08:28:45,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:45,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:28:45,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731434025] [2020-12-22 08:28:45,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:28:45,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:45,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:28:45,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:28:45,679 INFO L87 Difference]: Start difference. First operand 24641 states and 35235 transitions. Second operand 7 states. [2020-12-22 08:29:01,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:01,037 INFO L93 Difference]: Finished difference Result 101436 states and 146336 transitions. [2020-12-22 08:29:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:29:01,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-12-22 08:29:01,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:01,163 INFO L225 Difference]: With dead ends: 101436 [2020-12-22 08:29:01,163 INFO L226 Difference]: Without dead ends: 89630 [2020-12-22 08:29:01,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:29:01,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89630 states. [2020-12-22 08:29:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89630 to 24710. [2020-12-22 08:29:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24710 states. [2020-12-22 08:29:05,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24710 states to 24710 states and 35332 transitions. [2020-12-22 08:29:05,318 INFO L78 Accepts]: Start accepts. Automaton has 24710 states and 35332 transitions. Word has length 68 [2020-12-22 08:29:05,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:05,319 INFO L481 AbstractCegarLoop]: Abstraction has 24710 states and 35332 transitions. [2020-12-22 08:29:05,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:29:05,319 INFO L276 IsEmpty]: Start isEmpty. Operand 24710 states and 35332 transitions. [2020-12-22 08:29:05,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:29:05,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:05,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:29:05,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:29:05,326 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:05,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:05,326 INFO L82 PathProgramCache]: Analyzing trace with hash -16939312, now seen corresponding path program 1 times [2020-12-22 08:29:05,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:05,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608071802] [2020-12-22 08:29:05,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:05,463 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 08:29:05,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608071802] [2020-12-22 08:29:05,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:05,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:29:05,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988327742] [2020-12-22 08:29:05,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:29:05,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:05,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:29:05,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:29:05,465 INFO L87 Difference]: Start difference. First operand 24710 states and 35332 transitions. Second operand 9 states. [2020-12-22 08:29:24,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:24,016 INFO L93 Difference]: Finished difference Result 121401 states and 176295 transitions. [2020-12-22 08:29:24,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:29:24,017 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-12-22 08:29:24,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:24,147 INFO L225 Difference]: With dead ends: 121401 [2020-12-22 08:29:24,147 INFO L226 Difference]: Without dead ends: 100998 [2020-12-22 08:29:24,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:29:24,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100998 states. [2020-12-22 08:29:29,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100998 to 24524. [2020-12-22 08:29:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24524 states. [2020-12-22 08:29:29,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24524 states to 24524 states and 35085 transitions. [2020-12-22 08:29:29,038 INFO L78 Accepts]: Start accepts. Automaton has 24524 states and 35085 transitions. Word has length 68 [2020-12-22 08:29:29,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:29,039 INFO L481 AbstractCegarLoop]: Abstraction has 24524 states and 35085 transitions. [2020-12-22 08:29:29,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:29:29,039 INFO L276 IsEmpty]: Start isEmpty. Operand 24524 states and 35085 transitions. [2020-12-22 08:29:29,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:29:29,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:29,045 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 08:29:29,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:29:29,046 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:29,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:29,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1623797592, now seen corresponding path program 1 times [2020-12-22 08:29:29,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:29,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634990242] [2020-12-22 08:29:29,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:29,217 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 08:29:29,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634990242] [2020-12-22 08:29:29,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:29,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:29:29,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449384277] [2020-12-22 08:29:29,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:29:29,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:29,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:29:29,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:29:29,219 INFO L87 Difference]: Start difference. First operand 24524 states and 35085 transitions. Second operand 8 states. [2020-12-22 08:29:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:38,899 INFO L93 Difference]: Finished difference Result 70017 states and 101390 transitions. [2020-12-22 08:29:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:29:38,900 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-12-22 08:29:38,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:38,970 INFO L225 Difference]: With dead ends: 70017 [2020-12-22 08:29:38,970 INFO L226 Difference]: Without dead ends: 48614 [2020-12-22 08:29:38,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:29:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48614 states. [2020-12-22 08:29:43,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48614 to 23932. [2020-12-22 08:29:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23932 states. [2020-12-22 08:29:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23932 states to 23932 states and 34313 transitions. [2020-12-22 08:29:43,302 INFO L78 Accepts]: Start accepts. Automaton has 23932 states and 34313 transitions. Word has length 68 [2020-12-22 08:29:43,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:43,303 INFO L481 AbstractCegarLoop]: Abstraction has 23932 states and 34313 transitions. [2020-12-22 08:29:43,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:29:43,303 INFO L276 IsEmpty]: Start isEmpty. Operand 23932 states and 34313 transitions. [2020-12-22 08:29:43,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:29:43,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:43,309 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 08:29:43,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:29:43,309 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:43,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:43,310 INFO L82 PathProgramCache]: Analyzing trace with hash 601134174, now seen corresponding path program 1 times [2020-12-22 08:29:43,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:43,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492598529] [2020-12-22 08:29:43,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:43,645 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 08:29:43,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492598529] [2020-12-22 08:29:43,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:43,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:29:43,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310856755] [2020-12-22 08:29:43,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:29:43,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:43,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:29:43,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:29:43,648 INFO L87 Difference]: Start difference. First operand 23932 states and 34313 transitions. Second operand 12 states. [2020-12-22 08:30:05,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:05,532 INFO L93 Difference]: Finished difference Result 126701 states and 185155 transitions. [2020-12-22 08:30:05,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:30:05,532 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-12-22 08:30:05,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:05,677 INFO L225 Difference]: With dead ends: 126701 [2020-12-22 08:30:05,677 INFO L226 Difference]: Without dead ends: 106250 [2020-12-22 08:30:05,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:30:05,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106250 states. [2020-12-22 08:30:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106250 to 23484. [2020-12-22 08:30:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23484 states. [2020-12-22 08:30:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23484 states to 23484 states and 33743 transitions. [2020-12-22 08:30:10,967 INFO L78 Accepts]: Start accepts. Automaton has 23484 states and 33743 transitions. Word has length 69 [2020-12-22 08:30:10,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:10,968 INFO L481 AbstractCegarLoop]: Abstraction has 23484 states and 33743 transitions. [2020-12-22 08:30:10,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:30:10,968 INFO L276 IsEmpty]: Start isEmpty. Operand 23484 states and 33743 transitions. [2020-12-22 08:30:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:30:10,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:10,975 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 08:30:10,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:30:10,975 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash -10442599, now seen corresponding path program 1 times [2020-12-22 08:30:10,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:10,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480159029] [2020-12-22 08:30:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:12,117 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 08:30:12,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480159029] [2020-12-22 08:30:12,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:12,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-12-22 08:30:12,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668191657] [2020-12-22 08:30:12,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 08:30:12,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:12,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 08:30:12,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-12-22 08:30:12,120 INFO L87 Difference]: Start difference. First operand 23484 states and 33743 transitions. Second operand 17 states. [2020-12-22 08:30:12,478 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:30:12,753 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2020-12-22 08:30:12,996 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2020-12-22 08:30:13,296 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-12-22 08:30:13,586 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-12-22 08:30:13,961 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2020-12-22 08:30:14,539 WARN L197 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-12-22 08:30:15,571 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-12-22 08:30:15,984 WARN L197 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-22 08:30:16,426 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-12-22 08:30:16,776 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 08:30:17,177 WARN L197 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 08:30:17,877 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-12-22 08:30:18,676 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-12-22 08:30:25,680 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:30:28,553 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-12-22 08:30:52,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:52,452 INFO L93 Difference]: Finished difference Result 160367 states and 235353 transitions. [2020-12-22 08:30:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-22 08:30:52,452 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 69 [2020-12-22 08:30:52,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:52,854 INFO L225 Difference]: With dead ends: 160367 [2020-12-22 08:30:52,854 INFO L226 Difference]: Without dead ends: 140254 [2020-12-22 08:30:52,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 08:30:52,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140254 states. [2020-12-22 08:30:59,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140254 to 23409. [2020-12-22 08:30:59,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23409 states. [2020-12-22 08:30:59,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23409 states to 23409 states and 33628 transitions. [2020-12-22 08:30:59,404 INFO L78 Accepts]: Start accepts. Automaton has 23409 states and 33628 transitions. Word has length 69 [2020-12-22 08:30:59,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:59,405 INFO L481 AbstractCegarLoop]: Abstraction has 23409 states and 33628 transitions. [2020-12-22 08:30:59,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 08:30:59,405 INFO L276 IsEmpty]: Start isEmpty. Operand 23409 states and 33628 transitions. [2020-12-22 08:30:59,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:30:59,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:59,409 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 08:30:59,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:30:59,409 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:59,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:59,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2099777066, now seen corresponding path program 1 times [2020-12-22 08:30:59,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:59,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158662492] [2020-12-22 08:30:59,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:00,096 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 08:31:00,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158662492] [2020-12-22 08:31:00,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:00,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:31:00,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595951214] [2020-12-22 08:31:00,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:31:00,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:00,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:31:00,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:31:00,099 INFO L87 Difference]: Start difference. First operand 23409 states and 33628 transitions. Second operand 15 states. [2020-12-22 08:31:00,275 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-12-22 08:31:00,539 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-12-22 08:31:00,707 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-12-22 08:31:00,895 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-12-22 08:31:01,148 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-12-22 08:31:01,557 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-22 08:31:02,116 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-22 08:31:02,814 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55