/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:50:49,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:50:49,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:50:49,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:50:49,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:50:49,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:50:49,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:50:49,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:50:49,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:50:49,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:50:49,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:50:49,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:50:49,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:50:49,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:50:49,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:50:49,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:50:49,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:50:49,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:50:49,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:50:49,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:50:49,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:50:49,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:50:49,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:50:49,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:50:49,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:50:49,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:50:49,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:50:49,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:50:49,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:50:49,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:50:49,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:50:49,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:50:49,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:50:49,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:50:49,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:50:49,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:50:49,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:50:49,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:50:49,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:50:49,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:50:49,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:50:49,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:50:49,630 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:50:49,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:50:49,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:50:49,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:50:49,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:50:49,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:50:49,632 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:50:49,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:50:49,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:50:49,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:50:49,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:50:49,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:50:49,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:50:49,634 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:50:49,634 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:50:49,634 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:50:49,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:50:49,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:50:49,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:50:49,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:50:49,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:50:49,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:50:49,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:50:49,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:50:49,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:50:49,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:50:49,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:50:49,636 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:50:49,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:50:49,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:50:49,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:50:49,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:50:49,638 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:50:49,638 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:50:49,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:50:49,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:50:49,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:50:49,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:50:49,886 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:50:49,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 18:50:49,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f64af077/90c5a18a10b34d0ea09b9312456fca1d/FLAG6ebd730ce [2022-01-10 18:50:50,577 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:50:50,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 18:50:50,593 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f64af077/90c5a18a10b34d0ea09b9312456fca1d/FLAG6ebd730ce [2022-01-10 18:50:50,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f64af077/90c5a18a10b34d0ea09b9312456fca1d [2022-01-10 18:50:50,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:50:50,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:50:50,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:50:50,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:50:50,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:50:50,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:50:50" (1/1) ... [2022-01-10 18:50:50,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f2d13b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:50:50, skipping insertion in model container [2022-01-10 18:50:50,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:50:50" (1/1) ... [2022-01-10 18:50:50,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:50:51,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:50:51,350 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[21939,21952] [2022-01-10 18:50:51,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:50:51,500 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:50:51,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[21939,21952] [2022-01-10 18:50:51,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:50:51,789 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:50:51,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:50:51 WrapperNode [2022-01-10 18:50:51,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:50:51,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:50:51,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:50:51,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:50:51,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:50:51" (1/1) ... [2022-01-10 18:50:51,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:50:51" (1/1) ... [2022-01-10 18:50:51,907 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2756 [2022-01-10 18:50:51,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:50:51,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:50:51,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:50:51,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:50:51,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:50:51" (1/1) ... [2022-01-10 18:50:51,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:50:51" (1/1) ... [2022-01-10 18:50:51,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:50:51" (1/1) ... [2022-01-10 18:50:51,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:50:51" (1/1) ... [2022-01-10 18:50:51,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:50:51" (1/1) ... [2022-01-10 18:50:51,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:50:51" (1/1) ... [2022-01-10 18:50:51,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:50:51" (1/1) ... [2022-01-10 18:50:51,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:50:51,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:50:51,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:50:51,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:50:51,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:50:51" (1/1) ... [2022-01-10 18:50:52,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:50:52,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:50:52,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:50:52,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:50:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:50:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:50:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:50:52,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:50:52,282 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:50:52,284 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:50:53,695 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:50:53,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:50:53,711 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:50:53,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:50:53 BoogieIcfgContainer [2022-01-10 18:50:53,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:50:53,715 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:50:53,715 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:50:53,716 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:50:53,719 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:50:53" (1/1) ... [2022-01-10 18:50:54,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:50:54 BasicIcfg [2022-01-10 18:50:54,431 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:50:54,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:50:54,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:50:54,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:50:54,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:50:50" (1/4) ... [2022-01-10 18:50:54,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474b5269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:50:54, skipping insertion in model container [2022-01-10 18:50:54,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:50:51" (2/4) ... [2022-01-10 18:50:54,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474b5269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:50:54, skipping insertion in model container [2022-01-10 18:50:54,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:50:53" (3/4) ... [2022-01-10 18:50:54,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474b5269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:50:54, skipping insertion in model container [2022-01-10 18:50:54,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:50:54" (4/4) ... [2022-01-10 18:50:54,440 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 18:50:54,445 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:50:54,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:50:54,505 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:50:54,511 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:50:54,513 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:50:54,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 745 states, 743 states have (on average 1.8371467025572006) internal successors, (1365), 744 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:50:54,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-10 18:50:54,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:50:54,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:50:54,577 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:50:54,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:50:54,582 INFO L85 PathProgramCache]: Analyzing trace with hash 858377459, now seen corresponding path program 1 times [2022-01-10 18:50:54,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:50:54,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969168418] [2022-01-10 18:50:54,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:50:54,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:50:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:50:55,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:50:55,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:50:55,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969168418] [2022-01-10 18:50:55,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969168418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:50:55,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:50:55,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:50:55,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705401218] [2022-01-10 18:50:55,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:50:55,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:50:55,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:50:55,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:50:55,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:50:55,585 INFO L87 Difference]: Start difference. First operand has 745 states, 743 states have (on average 1.8371467025572006) internal successors, (1365), 744 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:50:57,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:50:57,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:50:57,924 INFO L93 Difference]: Finished difference Result 1136 states and 2022 transitions. [2022-01-10 18:50:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:50:57,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2022-01-10 18:50:57,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:50:57,944 INFO L225 Difference]: With dead ends: 1136 [2022-01-10 18:50:57,944 INFO L226 Difference]: Without dead ends: 928 [2022-01-10 18:50:57,948 INFO L932 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 [2022-01-10 18:50:57,950 INFO L933 BasicCegarLoop]: 1360 mSDtfsCounter, 352 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:50:57,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 2615 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 18:50:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-01-10 18:50:58,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 925. [2022-01-10 18:50:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 924 states have (on average 1.7380952380952381) internal successors, (1606), 924 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:50:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1606 transitions. [2022-01-10 18:50:58,028 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1606 transitions. Word has length 203 [2022-01-10 18:50:58,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:50:58,029 INFO L470 AbstractCegarLoop]: Abstraction has 925 states and 1606 transitions. [2022-01-10 18:50:58,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:50:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1606 transitions. [2022-01-10 18:50:58,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-01-10 18:50:58,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:50:58,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:50:58,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:50:58,034 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:50:58,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:50:58,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1997239369, now seen corresponding path program 1 times [2022-01-10 18:50:58,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:50:58,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804643149] [2022-01-10 18:50:58,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:50:58,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:50:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:50:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:50:58,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:50:58,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804643149] [2022-01-10 18:50:58,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804643149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:50:58,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:50:58,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:50:58,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618221151] [2022-01-10 18:50:58,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:50:58,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:50:58,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:50:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:50:58,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:50:58,512 INFO L87 Difference]: Start difference. First operand 925 states and 1606 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:50:58,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:50:58,780 INFO L93 Difference]: Finished difference Result 2676 states and 4637 transitions. [2022-01-10 18:50:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:50:58,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2022-01-10 18:50:58,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:50:58,792 INFO L225 Difference]: With dead ends: 2676 [2022-01-10 18:50:58,792 INFO L226 Difference]: Without dead ends: 1828 [2022-01-10 18:50:58,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:50:58,799 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 3609 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3609 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:50:58,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3609 Valid, 2568 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:50:58,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2022-01-10 18:50:58,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1826. [2022-01-10 18:50:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1825 states have (on average 1.7315068493150685) internal successors, (3160), 1825 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:50:58,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 3160 transitions. [2022-01-10 18:50:58,929 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 3160 transitions. Word has length 207 [2022-01-10 18:50:58,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:50:58,931 INFO L470 AbstractCegarLoop]: Abstraction has 1826 states and 3160 transitions. [2022-01-10 18:50:58,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:50:58,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 3160 transitions. [2022-01-10 18:50:58,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-10 18:50:58,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:50:58,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:50:58,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:50:58,947 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:50:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:50:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1498537883, now seen corresponding path program 1 times [2022-01-10 18:50:58,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:50:58,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055522228] [2022-01-10 18:50:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:50:58,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:50:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:50:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:50:59,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:50:59,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055522228] [2022-01-10 18:50:59,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055522228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:50:59,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:50:59,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:50:59,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329627121] [2022-01-10 18:50:59,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:50:59,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:50:59,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:50:59,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:50:59,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:50:59,185 INFO L87 Difference]: Start difference. First operand 1826 states and 3160 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:50:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:50:59,352 INFO L93 Difference]: Finished difference Result 2546 states and 4385 transitions. [2022-01-10 18:50:59,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:50:59,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2022-01-10 18:50:59,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:50:59,362 INFO L225 Difference]: With dead ends: 2546 [2022-01-10 18:50:59,363 INFO L226 Difference]: Without dead ends: 2153 [2022-01-10 18:50:59,366 INFO L932 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 [2022-01-10 18:50:59,369 INFO L933 BasicCegarLoop]: 1569 mSDtfsCounter, 312 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:50:59,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2824 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:50:59,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2022-01-10 18:50:59,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2151. [2022-01-10 18:50:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2150 states have (on average 1.7269767441860464) internal successors, (3713), 2150 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:50:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3713 transitions. [2022-01-10 18:50:59,482 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3713 transitions. Word has length 209 [2022-01-10 18:50:59,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:50:59,483 INFO L470 AbstractCegarLoop]: Abstraction has 2151 states and 3713 transitions. [2022-01-10 18:50:59,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:50:59,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3713 transitions. [2022-01-10 18:50:59,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-01-10 18:50:59,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:50:59,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:50:59,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:50:59,488 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:50:59,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:50:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash -2065241362, now seen corresponding path program 1 times [2022-01-10 18:50:59,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:50:59,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541635335] [2022-01-10 18:50:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:50:59,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:50:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:50:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:50:59,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:50:59,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541635335] [2022-01-10 18:50:59,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541635335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:50:59,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:50:59,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:50:59,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884504433] [2022-01-10 18:50:59,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:50:59,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:50:59,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:50:59,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:50:59,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:50:59,834 INFO L87 Difference]: Start difference. First operand 2151 states and 3713 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:00,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:51:00,435 INFO L93 Difference]: Finished difference Result 8460 states and 14591 transitions. [2022-01-10 18:51:00,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:51:00,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2022-01-10 18:51:00,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:51:00,465 INFO L225 Difference]: With dead ends: 8460 [2022-01-10 18:51:00,465 INFO L226 Difference]: Without dead ends: 6323 [2022-01-10 18:51:00,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:51:00,476 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 4640 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4640 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:51:00,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4640 Valid, 4042 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:51:00,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6323 states. [2022-01-10 18:51:00,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6323 to 4256. [2022-01-10 18:51:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 1.7191539365452408) internal successors, (7315), 4255 states have internal predecessors, (7315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:00,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 7315 transitions. [2022-01-10 18:51:00,852 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 7315 transitions. Word has length 209 [2022-01-10 18:51:00,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:51:00,853 INFO L470 AbstractCegarLoop]: Abstraction has 4256 states and 7315 transitions. [2022-01-10 18:51:00,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:00,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 7315 transitions. [2022-01-10 18:51:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-01-10 18:51:00,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:51:00,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:51:00,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:51:00,861 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:51:00,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:51:00,862 INFO L85 PathProgramCache]: Analyzing trace with hash -542249028, now seen corresponding path program 1 times [2022-01-10 18:51:00,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:51:00,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710641367] [2022-01-10 18:51:00,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:51:00,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:51:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:51:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:51:01,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:51:01,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710641367] [2022-01-10 18:51:01,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710641367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:51:01,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:51:01,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:51:01,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573775264] [2022-01-10 18:51:01,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:51:01,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:51:01,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:51:01,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:51:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:51:01,144 INFO L87 Difference]: Start difference. First operand 4256 states and 7315 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:01,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:51:01,997 INFO L93 Difference]: Finished difference Result 12537 states and 21535 transitions. [2022-01-10 18:51:01,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:51:01,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2022-01-10 18:51:01,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:51:02,032 INFO L225 Difference]: With dead ends: 12537 [2022-01-10 18:51:02,033 INFO L226 Difference]: Without dead ends: 8447 [2022-01-10 18:51:02,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:51:02,041 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 3313 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3313 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:51:02,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3313 Valid, 2861 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:51:02,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8447 states. [2022-01-10 18:51:02,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8447 to 8445. [2022-01-10 18:51:02,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8445 states, 8444 states have (on average 1.7128138323069635) internal successors, (14463), 8444 states have internal predecessors, (14463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8445 states to 8445 states and 14463 transitions. [2022-01-10 18:51:02,786 INFO L78 Accepts]: Start accepts. Automaton has 8445 states and 14463 transitions. Word has length 212 [2022-01-10 18:51:02,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:51:02,790 INFO L470 AbstractCegarLoop]: Abstraction has 8445 states and 14463 transitions. [2022-01-10 18:51:02,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 8445 states and 14463 transitions. [2022-01-10 18:51:02,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-01-10 18:51:02,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:51:02,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:51:02,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:51:02,808 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:51:02,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:51:02,809 INFO L85 PathProgramCache]: Analyzing trace with hash -544203853, now seen corresponding path program 1 times [2022-01-10 18:51:02,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:51:02,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105692500] [2022-01-10 18:51:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:51:02,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:51:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:51:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:51:03,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:51:03,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105692500] [2022-01-10 18:51:03,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105692500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:51:03,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:51:03,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:51:03,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699621168] [2022-01-10 18:51:03,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:51:03,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:51:03,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:51:03,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:51:03,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:51:03,105 INFO L87 Difference]: Start difference. First operand 8445 states and 14463 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:04,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:51:04,553 INFO L93 Difference]: Finished difference Result 25115 states and 43005 transitions. [2022-01-10 18:51:04,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:51:04,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2022-01-10 18:51:04,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:51:04,618 INFO L225 Difference]: With dead ends: 25115 [2022-01-10 18:51:04,619 INFO L226 Difference]: Without dead ends: 16731 [2022-01-10 18:51:04,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:51:04,638 INFO L933 BasicCegarLoop]: 1593 mSDtfsCounter, 3285 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:51:04,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3285 Valid, 2848 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:51:04,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16731 states. [2022-01-10 18:51:05,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16731 to 16729. [2022-01-10 18:51:05,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16729 states, 16728 states have (on average 1.7046269727403156) internal successors, (28515), 16728 states have internal predecessors, (28515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16729 states to 16729 states and 28515 transitions. [2022-01-10 18:51:06,035 INFO L78 Accepts]: Start accepts. Automaton has 16729 states and 28515 transitions. Word has length 214 [2022-01-10 18:51:06,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:51:06,036 INFO L470 AbstractCegarLoop]: Abstraction has 16729 states and 28515 transitions. [2022-01-10 18:51:06,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 16729 states and 28515 transitions. [2022-01-10 18:51:06,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-10 18:51:06,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:51:06,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:51:06,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:51:06,065 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:51:06,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:51:06,066 INFO L85 PathProgramCache]: Analyzing trace with hash 718888842, now seen corresponding path program 1 times [2022-01-10 18:51:06,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:51:06,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3023590] [2022-01-10 18:51:06,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:51:06,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:51:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:51:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:51:06,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:51:06,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3023590] [2022-01-10 18:51:06,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3023590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:51:06,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:51:06,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:51:06,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412089686] [2022-01-10 18:51:06,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:51:06,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:51:06,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:51:06,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:51:06,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:51:06,435 INFO L87 Difference]: Start difference. First operand 16729 states and 28515 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:09,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:51:10,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:51:10,553 INFO L93 Difference]: Finished difference Result 32869 states and 55517 transitions. [2022-01-10 18:51:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:51:10,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2022-01-10 18:51:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:51:10,616 INFO L225 Difference]: With dead ends: 32869 [2022-01-10 18:51:10,616 INFO L226 Difference]: Without dead ends: 24547 [2022-01-10 18:51:10,637 INFO L932 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 [2022-01-10 18:51:10,637 INFO L933 BasicCegarLoop]: 1308 mSDtfsCounter, 303 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:51:10,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 2555 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 18:51:10,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24547 states. [2022-01-10 18:51:12,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24547 to 24497. [2022-01-10 18:51:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24497 states, 24496 states have (on average 1.690194317439582) internal successors, (41403), 24496 states have internal predecessors, (41403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:12,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24497 states to 24497 states and 41403 transitions. [2022-01-10 18:51:12,636 INFO L78 Accepts]: Start accepts. Automaton has 24497 states and 41403 transitions. Word has length 216 [2022-01-10 18:51:12,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:51:12,637 INFO L470 AbstractCegarLoop]: Abstraction has 24497 states and 41403 transitions. [2022-01-10 18:51:12,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:12,637 INFO L276 IsEmpty]: Start isEmpty. Operand 24497 states and 41403 transitions. [2022-01-10 18:51:12,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-01-10 18:51:12,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:51:12,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:51:12,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:51:12,667 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:51:12,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:51:12,668 INFO L85 PathProgramCache]: Analyzing trace with hash 365861926, now seen corresponding path program 1 times [2022-01-10 18:51:12,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:51:12,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109309704] [2022-01-10 18:51:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:51:12,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:51:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:51:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:51:12,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:51:12,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109309704] [2022-01-10 18:51:12,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109309704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:51:12,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:51:12,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:51:12,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184079045] [2022-01-10 18:51:12,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:51:12,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:51:12,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:51:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:51:12,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:51:12,904 INFO L87 Difference]: Start difference. First operand 24497 states and 41403 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:16,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:51:16,050 INFO L93 Difference]: Finished difference Result 70285 states and 118511 transitions. [2022-01-10 18:51:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:51:16,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2022-01-10 18:51:16,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:51:16,184 INFO L225 Difference]: With dead ends: 70285 [2022-01-10 18:51:16,184 INFO L226 Difference]: Without dead ends: 47651 [2022-01-10 18:51:16,225 INFO L932 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 [2022-01-10 18:51:16,226 INFO L933 BasicCegarLoop]: 2466 mSDtfsCounter, 1054 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 3735 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:51:16,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 3735 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:51:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47651 states. [2022-01-10 18:51:19,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47651 to 47649. [2022-01-10 18:51:19,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47649 states, 47648 states have (on average 1.6824420752182674) internal successors, (80165), 47648 states have internal predecessors, (80165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:19,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47649 states to 47649 states and 80165 transitions. [2022-01-10 18:51:19,210 INFO L78 Accepts]: Start accepts. Automaton has 47649 states and 80165 transitions. Word has length 220 [2022-01-10 18:51:19,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:51:19,211 INFO L470 AbstractCegarLoop]: Abstraction has 47649 states and 80165 transitions. [2022-01-10 18:51:19,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:19,211 INFO L276 IsEmpty]: Start isEmpty. Operand 47649 states and 80165 transitions. [2022-01-10 18:51:19,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-10 18:51:19,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:51:19,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:51:19,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:51:19,256 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:51:19,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:51:19,256 INFO L85 PathProgramCache]: Analyzing trace with hash -69710946, now seen corresponding path program 1 times [2022-01-10 18:51:19,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:51:19,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052411099] [2022-01-10 18:51:19,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:51:19,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:51:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:51:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:51:19,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:51:19,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052411099] [2022-01-10 18:51:19,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052411099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:51:19,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:51:19,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:51:19,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342023500] [2022-01-10 18:51:19,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:51:19,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:51:19,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:51:19,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:51:19,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:51:19,635 INFO L87 Difference]: Start difference. First operand 47649 states and 80165 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:26,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:51:26,341 INFO L93 Difference]: Finished difference Result 140381 states and 236159 transitions. [2022-01-10 18:51:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:51:26,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2022-01-10 18:51:26,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:51:26,540 INFO L225 Difference]: With dead ends: 140381 [2022-01-10 18:51:26,541 INFO L226 Difference]: Without dead ends: 93899 [2022-01-10 18:51:26,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:51:26,611 INFO L933 BasicCegarLoop]: 1520 mSDtfsCounter, 3263 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3263 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:51:26,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3263 Valid, 2775 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:51:26,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93899 states. [2022-01-10 18:51:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93899 to 93897. [2022-01-10 18:51:33,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93897 states, 93896 states have (on average 1.6778670017892137) internal successors, (157545), 93896 states have internal predecessors, (157545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:33,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93897 states to 93897 states and 157545 transitions. [2022-01-10 18:51:33,595 INFO L78 Accepts]: Start accepts. Automaton has 93897 states and 157545 transitions. Word has length 221 [2022-01-10 18:51:33,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:51:33,595 INFO L470 AbstractCegarLoop]: Abstraction has 93897 states and 157545 transitions. [2022-01-10 18:51:33,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:33,596 INFO L276 IsEmpty]: Start isEmpty. Operand 93897 states and 157545 transitions. [2022-01-10 18:51:33,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-01-10 18:51:33,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:51:33,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:51:33,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:51:33,679 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:51:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:51:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash 898691655, now seen corresponding path program 1 times [2022-01-10 18:51:33,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:51:33,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647792502] [2022-01-10 18:51:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:51:33,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:51:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:51:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:51:33,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:51:33,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647792502] [2022-01-10 18:51:33,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647792502] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:51:33,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:51:33,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:51:33,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468955449] [2022-01-10 18:51:33,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:51:33,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:51:33,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:51:33,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:51:33,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:51:33,886 INFO L87 Difference]: Start difference. First operand 93897 states and 157545 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:46,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:51:46,677 INFO L93 Difference]: Finished difference Result 274185 states and 459480 transitions. [2022-01-10 18:51:46,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:51:46,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2022-01-10 18:51:46,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:51:47,277 INFO L225 Difference]: With dead ends: 274185 [2022-01-10 18:51:47,277 INFO L226 Difference]: Without dead ends: 184699 [2022-01-10 18:51:47,390 INFO L932 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 [2022-01-10 18:51:47,391 INFO L933 BasicCegarLoop]: 2259 mSDtfsCounter, 1039 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:51:47,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 3528 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:51:47,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184699 states.