/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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:08:03,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:08:03,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:08:03,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:08:03,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:08:03,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:08:03,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:08:03,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:08:03,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:08:03,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:08:03,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:08:03,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:08:03,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:08:03,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:08:03,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:08:03,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:08:03,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:08:03,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:08:03,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:08:03,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:08:03,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:08:03,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:08:03,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:08:03,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:08:03,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:08:03,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 19:08:03,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 19:08:03,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 19:08:03,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 19:08:03,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 19:08:03,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 19:08:03,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 19:08:03,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 19:08:03,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:08:03,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:08:03,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:08:03,952 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 19:08:03,966 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:08:03,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:08:03,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:08:03,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:08:03,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:08:03,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:08:03,974 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:08:03,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:08:03,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:08:03,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:08:03,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:08:03,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:08:03,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:08:03,975 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:08:03,975 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:08:03,975 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:08:03,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:08:03,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:08:03,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:08:03,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:08:03,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:08:03,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:08:03,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:08:03,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:08:03,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:08:03,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:08:03,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:08:03,978 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:08:03,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:08:03,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:08:03,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:08:03,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:08:03,979 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:08:03,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:08:04,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:08:04,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:08:04,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:08:04,210 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:08:04,212 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:08:04,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 19:08:04,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/270b92c26/93c3b71266954be5af8d266b48cff9e7/FLAG009047a24 [2022-01-10 19:08:04,623 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:08:04,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 19:08:04,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/270b92c26/93c3b71266954be5af8d266b48cff9e7/FLAG009047a24 [2022-01-10 19:08:04,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/270b92c26/93c3b71266954be5af8d266b48cff9e7 [2022-01-10 19:08:04,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:08:04,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:08:04,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:08:04,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:08:04,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:08:04,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:08:04" (1/1) ... [2022-01-10 19:08:04,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40eb404f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:04, skipping insertion in model container [2022-01-10 19:08:04,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:08:04" (1/1) ... [2022-01-10 19:08:04,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:08:05,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:08:05,305 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15440,15453] [2022-01-10 19:08:05,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:08:05,366 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:08:05,434 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15440,15453] [2022-01-10 19:08:05,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:08:05,482 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:08:05,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:05 WrapperNode [2022-01-10 19:08:05,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:08:05,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:08:05,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:08:05,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:08:05,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:05" (1/1) ... [2022-01-10 19:08:05,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:05" (1/1) ... [2022-01-10 19:08:05,565 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1247 [2022-01-10 19:08:05,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:08:05,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:08:05,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:08:05,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:08:05,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:05" (1/1) ... [2022-01-10 19:08:05,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:05" (1/1) ... [2022-01-10 19:08:05,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:05" (1/1) ... [2022-01-10 19:08:05,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:05" (1/1) ... [2022-01-10 19:08:05,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:05" (1/1) ... [2022-01-10 19:08:05,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:05" (1/1) ... [2022-01-10 19:08:05,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:05" (1/1) ... [2022-01-10 19:08:05,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:08:05,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:08:05,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:08:05,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:08:05,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:05" (1/1) ... [2022-01-10 19:08:05,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:08:05,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:08:05,664 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 19:08:05,670 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 19:08:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:08:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:08:05,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:08:05,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:08:05,837 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:08:05,838 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:08:06,612 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:08:06,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:08:06,626 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 19:08:06,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:08:06 BoogieIcfgContainer [2022-01-10 19:08:06,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:08:06,629 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:08:06,630 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:08:06,631 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:08:06,633 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:08:06" (1/1) ... [2022-01-10 19:08:07,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:08:07 BasicIcfg [2022-01-10 19:08:07,102 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:08:07,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:08:07,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:08:07,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:08:07,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:08:04" (1/4) ... [2022-01-10 19:08:07,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b00b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:08:07, skipping insertion in model container [2022-01-10 19:08:07,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:08:05" (2/4) ... [2022-01-10 19:08:07,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b00b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:08:07, skipping insertion in model container [2022-01-10 19:08:07,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:08:06" (3/4) ... [2022-01-10 19:08:07,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b00b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:08:07, skipping insertion in model container [2022-01-10 19:08:07,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:08:07" (4/4) ... [2022-01-10 19:08:07,109 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 19:08:07,114 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:08:07,115 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 19:08:07,157 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:08:07,161 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 19:08:07,161 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 19:08:07,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 329 states have (on average 1.7750759878419453) internal successors, (584), 330 states have internal predecessors, (584), 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 19:08:07,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 19:08:07,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:07,195 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] [2022-01-10 19:08:07,196 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:07,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:07,199 INFO L85 PathProgramCache]: Analyzing trace with hash -231157521, now seen corresponding path program 1 times [2022-01-10 19:08:07,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:07,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788645113] [2022-01-10 19:08:07,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:07,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:07,702 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 19:08:07,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:07,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788645113] [2022-01-10 19:08:07,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788645113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:07,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:07,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:07,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133396318] [2022-01-10 19:08:07,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:07,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:07,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:07,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:07,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:07,740 INFO L87 Difference]: Start difference. First operand has 331 states, 329 states have (on average 1.7750759878419453) internal successors, (584), 330 states have internal predecessors, (584), 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 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 19:08:07,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:07,893 INFO L93 Difference]: Finished difference Result 949 states and 1677 transitions. [2022-01-10 19:08:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:07,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2022-01-10 19:08:07,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:07,914 INFO L225 Difference]: With dead ends: 949 [2022-01-10 19:08:07,914 INFO L226 Difference]: Without dead ends: 637 [2022-01-10 19:08:07,920 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 19:08:07,923 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 1308 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:07,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 1445 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:07,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-01-10 19:08:08,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 635. [2022-01-10 19:08:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.4589905362776026) internal successors, (925), 634 states have internal predecessors, (925), 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 19:08:08,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 925 transitions. [2022-01-10 19:08:08,006 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 925 transitions. Word has length 152 [2022-01-10 19:08:08,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:08,007 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 925 transitions. [2022-01-10 19:08:08,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 19:08:08,008 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 925 transitions. [2022-01-10 19:08:08,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 19:08:08,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:08,017 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] [2022-01-10 19:08:08,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:08:08,017 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:08,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:08,018 INFO L85 PathProgramCache]: Analyzing trace with hash -925488753, now seen corresponding path program 1 times [2022-01-10 19:08:08,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:08,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317729150] [2022-01-10 19:08:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:08,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:08,174 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 19:08:08,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:08,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317729150] [2022-01-10 19:08:08,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317729150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:08,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:08,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:08,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482368165] [2022-01-10 19:08:08,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:08,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:08,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:08,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:08,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:08,177 INFO L87 Difference]: Start difference. First operand 635 states and 925 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 19:08:08,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:08,215 INFO L93 Difference]: Finished difference Result 1867 states and 2711 transitions. [2022-01-10 19:08:08,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:08,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 153 [2022-01-10 19:08:08,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:08,220 INFO L225 Difference]: With dead ends: 1867 [2022-01-10 19:08:08,220 INFO L226 Difference]: Without dead ends: 1260 [2022-01-10 19:08:08,225 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 19:08:08,226 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 471 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:08,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1423 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:08,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-01-10 19:08:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 637. [2022-01-10 19:08:08,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 1.4575471698113207) internal successors, (927), 636 states have internal predecessors, (927), 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 19:08:08,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 927 transitions. [2022-01-10 19:08:08,284 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 927 transitions. Word has length 153 [2022-01-10 19:08:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:08,286 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 927 transitions. [2022-01-10 19:08:08,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 19:08:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 927 transitions. [2022-01-10 19:08:08,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 19:08:08,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:08,288 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] [2022-01-10 19:08:08,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:08:08,290 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:08,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:08,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1658768822, now seen corresponding path program 1 times [2022-01-10 19:08:08,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:08,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711693561] [2022-01-10 19:08:08,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:08,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:08,432 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 19:08:08,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:08,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711693561] [2022-01-10 19:08:08,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711693561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:08,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:08,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:08:08,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104118506] [2022-01-10 19:08:08,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:08,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:08:08,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:08,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:08:08,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:08:08,434 INFO L87 Difference]: Start difference. First operand 637 states and 927 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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 19:08:08,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:08,563 INFO L93 Difference]: Finished difference Result 2466 states and 3574 transitions. [2022-01-10 19:08:08,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:08:08,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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 154 [2022-01-10 19:08:08,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:08,569 INFO L225 Difference]: With dead ends: 2466 [2022-01-10 19:08:08,569 INFO L226 Difference]: Without dead ends: 1841 [2022-01-10 19:08:08,570 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 19:08:08,571 INFO L933 BasicCegarLoop]: 1048 mSDtfsCounter, 1624 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:08,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1624 Valid, 1931 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:08,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2022-01-10 19:08:08,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1232. [2022-01-10 19:08:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 1.4411047928513403) internal successors, (1774), 1231 states have internal predecessors, (1774), 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 19:08:08,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1774 transitions. [2022-01-10 19:08:08,648 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1774 transitions. Word has length 154 [2022-01-10 19:08:08,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:08,649 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1774 transitions. [2022-01-10 19:08:08,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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 19:08:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1774 transitions. [2022-01-10 19:08:08,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 19:08:08,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:08,651 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] [2022-01-10 19:08:08,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:08:08,651 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash -797261138, now seen corresponding path program 1 times [2022-01-10 19:08:08,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:08,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005942751] [2022-01-10 19:08:08,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:08,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:08,764 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 19:08:08,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:08,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005942751] [2022-01-10 19:08:08,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005942751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:08,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:08,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:08,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825990954] [2022-01-10 19:08:08,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:08,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:08,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:08,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:08,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:08,767 INFO L87 Difference]: Start difference. First operand 1232 states and 1774 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 19:08:08,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:08,837 INFO L93 Difference]: Finished difference Result 2154 states and 3096 transitions. [2022-01-10 19:08:08,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:08,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 154 [2022-01-10 19:08:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:08,846 INFO L225 Difference]: With dead ends: 2154 [2022-01-10 19:08:08,846 INFO L226 Difference]: Without dead ends: 938 [2022-01-10 19:08:08,848 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 19:08:08,854 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 69 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:08,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1481 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:08,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-01-10 19:08:08,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 938. [2022-01-10 19:08:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 1.4364994663820705) internal successors, (1346), 937 states have internal predecessors, (1346), 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 19:08:08,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1346 transitions. [2022-01-10 19:08:08,901 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1346 transitions. Word has length 154 [2022-01-10 19:08:08,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:08,901 INFO L470 AbstractCegarLoop]: Abstraction has 938 states and 1346 transitions. [2022-01-10 19:08:08,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 19:08:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1346 transitions. [2022-01-10 19:08:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 19:08:08,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:08,903 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] [2022-01-10 19:08:08,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:08:08,903 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:08,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash 458148147, now seen corresponding path program 1 times [2022-01-10 19:08:08,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:08,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388450372] [2022-01-10 19:08:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:08,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:08,975 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 19:08:08,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:08,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388450372] [2022-01-10 19:08:08,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388450372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:08,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:08,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:08,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320666595] [2022-01-10 19:08:08,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:08,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:08,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:08,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:08,978 INFO L87 Difference]: Start difference. First operand 938 states and 1346 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 19:08:09,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:09,068 INFO L93 Difference]: Finished difference Result 1856 states and 2655 transitions. [2022-01-10 19:08:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:09,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 156 [2022-01-10 19:08:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:09,072 INFO L225 Difference]: With dead ends: 1856 [2022-01-10 19:08:09,072 INFO L226 Difference]: Without dead ends: 1241 [2022-01-10 19:08:09,073 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 19:08:09,073 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 465 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:09,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 977 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:09,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-01-10 19:08:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 938. [2022-01-10 19:08:09,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 1.4354322305229457) internal successors, (1345), 937 states have internal predecessors, (1345), 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 19:08:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1345 transitions. [2022-01-10 19:08:09,130 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1345 transitions. Word has length 156 [2022-01-10 19:08:09,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:09,131 INFO L470 AbstractCegarLoop]: Abstraction has 938 states and 1345 transitions. [2022-01-10 19:08:09,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 19:08:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1345 transitions. [2022-01-10 19:08:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 19:08:09,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:09,136 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] [2022-01-10 19:08:09,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:08:09,137 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:09,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:09,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1360991767, now seen corresponding path program 1 times [2022-01-10 19:08:09,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:09,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601993454] [2022-01-10 19:08:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:09,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:09,243 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 19:08:09,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:09,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601993454] [2022-01-10 19:08:09,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601993454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:09,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:09,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:09,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759959133] [2022-01-10 19:08:09,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:09,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:09,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:09,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:09,245 INFO L87 Difference]: Start difference. First operand 938 states and 1345 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 19:08:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:09,322 INFO L93 Difference]: Finished difference Result 1940 states and 2870 transitions. [2022-01-10 19:08:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:09,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 157 [2022-01-10 19:08:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:09,325 INFO L225 Difference]: With dead ends: 1940 [2022-01-10 19:08:09,325 INFO L226 Difference]: Without dead ends: 1182 [2022-01-10 19:08:09,327 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 19:08:09,328 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 233 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:09,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 976 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:09,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-01-10 19:08:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1159. [2022-01-10 19:08:09,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 1.4723661485319517) internal successors, (1705), 1158 states have internal predecessors, (1705), 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 19:08:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1705 transitions. [2022-01-10 19:08:09,384 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1705 transitions. Word has length 157 [2022-01-10 19:08:09,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:09,385 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 1705 transitions. [2022-01-10 19:08:09,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 19:08:09,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1705 transitions. [2022-01-10 19:08:09,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 19:08:09,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:09,387 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] [2022-01-10 19:08:09,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:08:09,387 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:09,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:09,387 INFO L85 PathProgramCache]: Analyzing trace with hash 649370108, now seen corresponding path program 1 times [2022-01-10 19:08:09,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:09,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128227424] [2022-01-10 19:08:09,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:09,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:09,520 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 19:08:09,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:09,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128227424] [2022-01-10 19:08:09,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128227424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:09,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:09,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:09,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749324944] [2022-01-10 19:08:09,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:09,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:09,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:09,521 INFO L87 Difference]: Start difference. First operand 1159 states and 1705 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 19:08:09,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:09,641 INFO L93 Difference]: Finished difference Result 3039 states and 4515 transitions. [2022-01-10 19:08:09,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:09,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 160 [2022-01-10 19:08:09,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:09,648 INFO L225 Difference]: With dead ends: 3039 [2022-01-10 19:08:09,648 INFO L226 Difference]: Without dead ends: 2160 [2022-01-10 19:08:09,649 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 19:08:09,650 INFO L933 BasicCegarLoop]: 882 mSDtfsCounter, 400 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:09,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 1313 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:09,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2022-01-10 19:08:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 2158. [2022-01-10 19:08:09,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 2157 states have (on average 1.4617524339360222) internal successors, (3153), 2157 states have internal predecessors, (3153), 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 19:08:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 3153 transitions. [2022-01-10 19:08:09,759 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 3153 transitions. Word has length 160 [2022-01-10 19:08:09,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:09,759 INFO L470 AbstractCegarLoop]: Abstraction has 2158 states and 3153 transitions. [2022-01-10 19:08:09,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 19:08:09,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 3153 transitions. [2022-01-10 19:08:09,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 19:08:09,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:09,761 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] [2022-01-10 19:08:09,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:08:09,762 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:09,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:09,762 INFO L85 PathProgramCache]: Analyzing trace with hash 343735579, now seen corresponding path program 1 times [2022-01-10 19:08:09,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:09,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220853428] [2022-01-10 19:08:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:09,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:09,863 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 19:08:09,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:09,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220853428] [2022-01-10 19:08:09,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220853428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:09,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:09,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:09,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579514009] [2022-01-10 19:08:09,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:09,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:09,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:09,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:09,865 INFO L87 Difference]: Start difference. First operand 2158 states and 3153 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 19:08:10,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:10,071 INFO L93 Difference]: Finished difference Result 5373 states and 7848 transitions. [2022-01-10 19:08:10,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:10,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 160 [2022-01-10 19:08:10,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:10,083 INFO L225 Difference]: With dead ends: 5373 [2022-01-10 19:08:10,083 INFO L226 Difference]: Without dead ends: 3302 [2022-01-10 19:08:10,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:10,088 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1282 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:10,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1282 Valid, 1016 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:10,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2022-01-10 19:08:10,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 2163. [2022-01-10 19:08:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.4592969472710453) internal successors, (3155), 2162 states have internal predecessors, (3155), 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 19:08:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 3155 transitions. [2022-01-10 19:08:10,228 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 3155 transitions. Word has length 160 [2022-01-10 19:08:10,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:10,228 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 3155 transitions. [2022-01-10 19:08:10,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 19:08:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 3155 transitions. [2022-01-10 19:08:10,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 19:08:10,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:10,231 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] [2022-01-10 19:08:10,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:08:10,231 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:10,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1081631385, now seen corresponding path program 1 times [2022-01-10 19:08:10,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:10,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071160302] [2022-01-10 19:08:10,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:10,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:10,357 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 19:08:10,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:10,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071160302] [2022-01-10 19:08:10,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071160302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:10,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:10,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:10,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876549746] [2022-01-10 19:08:10,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:10,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:10,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:10,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:10,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:10,358 INFO L87 Difference]: Start difference. First operand 2163 states and 3155 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 19:08:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:10,634 INFO L93 Difference]: Finished difference Result 6203 states and 9033 transitions. [2022-01-10 19:08:10,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:10,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 160 [2022-01-10 19:08:10,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:10,647 INFO L225 Difference]: With dead ends: 6203 [2022-01-10 19:08:10,647 INFO L226 Difference]: Without dead ends: 4108 [2022-01-10 19:08:10,650 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 19:08:10,652 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 1001 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:10,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 1165 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2022-01-10 19:08:10,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 4106. [2022-01-10 19:08:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4106 states, 4105 states have (on average 1.4460414129110841) internal successors, (5936), 4105 states have internal predecessors, (5936), 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 19:08:10,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4106 states to 4106 states and 5936 transitions. [2022-01-10 19:08:10,927 INFO L78 Accepts]: Start accepts. Automaton has 4106 states and 5936 transitions. Word has length 160 [2022-01-10 19:08:10,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:10,928 INFO L470 AbstractCegarLoop]: Abstraction has 4106 states and 5936 transitions. [2022-01-10 19:08:10,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 19:08:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4106 states and 5936 transitions. [2022-01-10 19:08:10,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 19:08:10,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:10,932 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] [2022-01-10 19:08:10,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:08:10,932 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:10,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:10,933 INFO L85 PathProgramCache]: Analyzing trace with hash -511294374, now seen corresponding path program 1 times [2022-01-10 19:08:10,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:10,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111358713] [2022-01-10 19:08:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:10,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:11,035 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 19:08:11,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:11,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111358713] [2022-01-10 19:08:11,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111358713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:11,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:11,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:11,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132370569] [2022-01-10 19:08:11,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:11,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:11,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:11,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:11,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:11,040 INFO L87 Difference]: Start difference. First operand 4106 states and 5936 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 19:08:11,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:11,237 INFO L93 Difference]: Finished difference Result 5980 states and 8687 transitions. [2022-01-10 19:08:11,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:11,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 162 [2022-01-10 19:08:11,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:11,247 INFO L225 Difference]: With dead ends: 5980 [2022-01-10 19:08:11,247 INFO L226 Difference]: Without dead ends: 3429 [2022-01-10 19:08:11,251 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 19:08:11,251 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 47 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:11,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1456 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:11,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2022-01-10 19:08:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 3429. [2022-01-10 19:08:11,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3429 states, 3428 states have (on average 1.4466161026837807) internal successors, (4959), 3428 states have internal predecessors, (4959), 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 19:08:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3429 states to 3429 states and 4959 transitions. [2022-01-10 19:08:11,480 INFO L78 Accepts]: Start accepts. Automaton has 3429 states and 4959 transitions. Word has length 162 [2022-01-10 19:08:11,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:11,480 INFO L470 AbstractCegarLoop]: Abstraction has 3429 states and 4959 transitions. [2022-01-10 19:08:11,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 19:08:11,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3429 states and 4959 transitions. [2022-01-10 19:08:11,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 19:08:11,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:11,484 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] [2022-01-10 19:08:11,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:08:11,485 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:11,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:11,485 INFO L85 PathProgramCache]: Analyzing trace with hash -877506302, now seen corresponding path program 1 times [2022-01-10 19:08:11,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:11,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180731518] [2022-01-10 19:08:11,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:11,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:11,604 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 19:08:11,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:11,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180731518] [2022-01-10 19:08:11,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180731518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:11,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:11,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:08:11,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822176608] [2022-01-10 19:08:11,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:11,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:08:11,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:08:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:08:11,607 INFO L87 Difference]: Start difference. First operand 3429 states and 4959 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 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 19:08:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:11,982 INFO L93 Difference]: Finished difference Result 9018 states and 13007 transitions. [2022-01-10 19:08:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:08:11,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 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 162 [2022-01-10 19:08:11,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:12,008 INFO L225 Difference]: With dead ends: 9018 [2022-01-10 19:08:12,008 INFO L226 Difference]: Without dead ends: 5633 [2022-01-10 19:08:12,013 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 19:08:12,013 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 1328 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:12,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1328 Valid, 2306 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:12,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5633 states. [2022-01-10 19:08:12,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5633 to 3591. [2022-01-10 19:08:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3591 states, 3590 states have (on average 1.4334261838440112) internal successors, (5146), 3590 states have internal predecessors, (5146), 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 19:08:12,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 5146 transitions. [2022-01-10 19:08:12,300 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 5146 transitions. Word has length 162 [2022-01-10 19:08:12,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:12,300 INFO L470 AbstractCegarLoop]: Abstraction has 3591 states and 5146 transitions. [2022-01-10 19:08:12,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 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 19:08:12,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 5146 transitions. [2022-01-10 19:08:12,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 19:08:12,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:12,305 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] [2022-01-10 19:08:12,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:08:12,305 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:12,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:12,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1897310106, now seen corresponding path program 1 times [2022-01-10 19:08:12,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:12,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962148490] [2022-01-10 19:08:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:12,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:12,381 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 19:08:12,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:12,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962148490] [2022-01-10 19:08:12,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962148490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:12,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:12,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:12,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168620214] [2022-01-10 19:08:12,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:12,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:12,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:12,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:12,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:12,383 INFO L87 Difference]: Start difference. First operand 3591 states and 5146 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 19:08:12,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:12,562 INFO L93 Difference]: Finished difference Result 6478 states and 9275 transitions. [2022-01-10 19:08:12,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:12,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 162 [2022-01-10 19:08:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:12,567 INFO L225 Difference]: With dead ends: 6478 [2022-01-10 19:08:12,568 INFO L226 Difference]: Without dead ends: 2923 [2022-01-10 19:08:12,571 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 19:08:12,571 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 47 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:12,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1451 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2022-01-10 19:08:12,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2923. [2022-01-10 19:08:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2922 states have (on average 1.42984257357974) internal successors, (4178), 2922 states have internal predecessors, (4178), 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 19:08:12,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 4178 transitions. [2022-01-10 19:08:12,738 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 4178 transitions. Word has length 162 [2022-01-10 19:08:12,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:12,739 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 4178 transitions. [2022-01-10 19:08:12,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 19:08:12,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 4178 transitions. [2022-01-10 19:08:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 19:08:12,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:12,742 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] [2022-01-10 19:08:12,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:08:12,743 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:12,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:12,743 INFO L85 PathProgramCache]: Analyzing trace with hash 151993582, now seen corresponding path program 1 times [2022-01-10 19:08:12,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:12,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719013115] [2022-01-10 19:08:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:12,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:12,806 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 19:08:12,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:12,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719013115] [2022-01-10 19:08:12,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719013115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:12,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:12,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:12,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681901950] [2022-01-10 19:08:12,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:12,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:12,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:12,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:12,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:12,808 INFO L87 Difference]: Start difference. First operand 2923 states and 4178 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 19:08:13,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:13,015 INFO L93 Difference]: Finished difference Result 5756 states and 8251 transitions. [2022-01-10 19:08:13,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:13,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 165 [2022-01-10 19:08:13,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:13,022 INFO L225 Difference]: With dead ends: 5756 [2022-01-10 19:08:13,022 INFO L226 Difference]: Without dead ends: 4035 [2022-01-10 19:08:13,025 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 19:08:13,026 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 448 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:13,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 1170 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:13,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2022-01-10 19:08:13,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 2923. [2022-01-10 19:08:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2922 states have (on average 1.4288158795345653) internal successors, (4175), 2922 states have internal predecessors, (4175), 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 19:08:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 4175 transitions. [2022-01-10 19:08:13,189 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 4175 transitions. Word has length 165 [2022-01-10 19:08:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:13,190 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 4175 transitions. [2022-01-10 19:08:13,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 19:08:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 4175 transitions. [2022-01-10 19:08:13,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 19:08:13,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:13,193 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] [2022-01-10 19:08:13,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:08:13,194 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:13,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash -732563434, now seen corresponding path program 1 times [2022-01-10 19:08:13,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:13,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928352904] [2022-01-10 19:08:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:13,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:13,311 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 19:08:13,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:13,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928352904] [2022-01-10 19:08:13,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928352904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:13,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:13,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:13,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897623754] [2022-01-10 19:08:13,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:13,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:13,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:13,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:13,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:13,312 INFO L87 Difference]: Start difference. First operand 2923 states and 4175 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 19:08:13,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:13,537 INFO L93 Difference]: Finished difference Result 6790 states and 10016 transitions. [2022-01-10 19:08:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:13,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 166 [2022-01-10 19:08:13,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:13,546 INFO L225 Difference]: With dead ends: 6790 [2022-01-10 19:08:13,546 INFO L226 Difference]: Without dead ends: 4390 [2022-01-10 19:08:13,550 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 19:08:13,550 INFO L933 BasicCegarLoop]: 669 mSDtfsCounter, 307 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:13,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1002 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:13,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2022-01-10 19:08:13,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 3936. [2022-01-10 19:08:13,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3936 states, 3935 states have (on average 1.4719186785260483) internal successors, (5792), 3935 states have internal predecessors, (5792), 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 19:08:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3936 states to 3936 states and 5792 transitions. [2022-01-10 19:08:13,913 INFO L78 Accepts]: Start accepts. Automaton has 3936 states and 5792 transitions. Word has length 166 [2022-01-10 19:08:13,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:13,914 INFO L470 AbstractCegarLoop]: Abstraction has 3936 states and 5792 transitions. [2022-01-10 19:08:13,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 19:08:13,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3936 states and 5792 transitions. [2022-01-10 19:08:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-10 19:08:13,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:13,917 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] [2022-01-10 19:08:13,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:08:13,918 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:13,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:13,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1236003446, now seen corresponding path program 1 times [2022-01-10 19:08:13,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:13,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428207896] [2022-01-10 19:08:13,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:13,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:14,024 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 19:08:14,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:14,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428207896] [2022-01-10 19:08:14,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428207896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:14,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:14,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:14,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219152759] [2022-01-10 19:08:14,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:14,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:14,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:14,026 INFO L87 Difference]: Start difference. First operand 3936 states and 5792 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 19:08:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:14,372 INFO L93 Difference]: Finished difference Result 9365 states and 13949 transitions. [2022-01-10 19:08:14,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:14,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 169 [2022-01-10 19:08:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:14,383 INFO L225 Difference]: With dead ends: 9365 [2022-01-10 19:08:14,383 INFO L226 Difference]: Without dead ends: 6092 [2022-01-10 19:08:14,388 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 19:08:14,389 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 382 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:14,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 1274 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6092 states. [2022-01-10 19:08:14,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6092 to 6090. [2022-01-10 19:08:14,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6090 states, 6089 states have (on average 1.459681392675316) internal successors, (8888), 6089 states have internal predecessors, (8888), 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 19:08:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 8888 transitions. [2022-01-10 19:08:14,742 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 8888 transitions. Word has length 169 [2022-01-10 19:08:14,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:14,743 INFO L470 AbstractCegarLoop]: Abstraction has 6090 states and 8888 transitions. [2022-01-10 19:08:14,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 19:08:14,743 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 8888 transitions. [2022-01-10 19:08:14,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-10 19:08:14,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:14,746 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] [2022-01-10 19:08:14,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:08:14,747 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:14,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:14,747 INFO L85 PathProgramCache]: Analyzing trace with hash 950282030, now seen corresponding path program 1 times [2022-01-10 19:08:14,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:14,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745829211] [2022-01-10 19:08:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:14,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:14,849 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 19:08:14,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:14,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745829211] [2022-01-10 19:08:14,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745829211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:14,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:14,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:14,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773083612] [2022-01-10 19:08:14,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:14,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:14,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:14,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:14,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:14,852 INFO L87 Difference]: Start difference. First operand 6090 states and 8888 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 19:08:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:15,387 INFO L93 Difference]: Finished difference Result 14491 states and 21352 transitions. [2022-01-10 19:08:15,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:15,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 169 [2022-01-10 19:08:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:15,404 INFO L225 Difference]: With dead ends: 14491 [2022-01-10 19:08:15,404 INFO L226 Difference]: Without dead ends: 9367 [2022-01-10 19:08:15,410 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 19:08:15,410 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 388 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:15,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1275 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:15,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9367 states. [2022-01-10 19:08:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9367 to 9365. [2022-01-10 19:08:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9365 states, 9364 states have (on average 1.444681759931653) internal successors, (13528), 9364 states have internal predecessors, (13528), 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 19:08:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9365 states to 9365 states and 13528 transitions. [2022-01-10 19:08:16,087 INFO L78 Accepts]: Start accepts. Automaton has 9365 states and 13528 transitions. Word has length 169 [2022-01-10 19:08:16,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:16,087 INFO L470 AbstractCegarLoop]: Abstraction has 9365 states and 13528 transitions. [2022-01-10 19:08:16,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 19:08:16,088 INFO L276 IsEmpty]: Start isEmpty. Operand 9365 states and 13528 transitions. [2022-01-10 19:08:16,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-10 19:08:16,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:16,093 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] [2022-01-10 19:08:16,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:08:16,093 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:16,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:16,094 INFO L85 PathProgramCache]: Analyzing trace with hash -478206109, now seen corresponding path program 1 times [2022-01-10 19:08:16,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:16,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792406443] [2022-01-10 19:08:16,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:16,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:16,209 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 19:08:16,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:16,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792406443] [2022-01-10 19:08:16,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792406443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:16,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:16,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:16,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593387791] [2022-01-10 19:08:16,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:16,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:16,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:16,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:16,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:16,210 INFO L87 Difference]: Start difference. First operand 9365 states and 13528 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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 19:08:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:16,895 INFO L93 Difference]: Finished difference Result 18737 states and 27068 transitions. [2022-01-10 19:08:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:16,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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 173 [2022-01-10 19:08:16,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:16,913 INFO L225 Difference]: With dead ends: 18737 [2022-01-10 19:08:16,913 INFO L226 Difference]: Without dead ends: 9529 [2022-01-10 19:08:16,923 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 19:08:16,924 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 1216 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:16,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1216 Valid, 888 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:16,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9529 states. [2022-01-10 19:08:17,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9529 to 9467. [2022-01-10 19:08:17,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9467 states, 9466 states have (on average 1.4405239805620114) internal successors, (13636), 9466 states have internal predecessors, (13636), 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 19:08:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9467 states to 9467 states and 13636 transitions. [2022-01-10 19:08:17,531 INFO L78 Accepts]: Start accepts. Automaton has 9467 states and 13636 transitions. Word has length 173 [2022-01-10 19:08:17,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:17,531 INFO L470 AbstractCegarLoop]: Abstraction has 9467 states and 13636 transitions. [2022-01-10 19:08:17,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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 19:08:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 9467 states and 13636 transitions. [2022-01-10 19:08:17,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-10 19:08:17,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:17,537 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] [2022-01-10 19:08:17,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:08:17,537 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:17,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1114472682, now seen corresponding path program 1 times [2022-01-10 19:08:17,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:17,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359788443] [2022-01-10 19:08:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:17,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:17,631 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 19:08:17,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:17,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359788443] [2022-01-10 19:08:17,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359788443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:17,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:17,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:17,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533488595] [2022-01-10 19:08:17,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:17,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:17,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:17,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:17,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:17,632 INFO L87 Difference]: Start difference. First operand 9467 states and 13636 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 19:08:18,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:18,488 INFO L93 Difference]: Finished difference Result 21580 states and 31804 transitions. [2022-01-10 19:08:18,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:18,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 173 [2022-01-10 19:08:18,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:18,522 INFO L225 Difference]: With dead ends: 21580 [2022-01-10 19:08:18,523 INFO L226 Difference]: Without dead ends: 14410 [2022-01-10 19:08:18,534 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 19:08:18,534 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 301 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:18,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 979 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:18,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14410 states. [2022-01-10 19:08:19,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14410 to 13272. [2022-01-10 19:08:19,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13272 states, 13271 states have (on average 1.4755481877778616) internal successors, (19582), 13271 states have internal predecessors, (19582), 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 19:08:19,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13272 states to 13272 states and 19582 transitions. [2022-01-10 19:08:19,680 INFO L78 Accepts]: Start accepts. Automaton has 13272 states and 19582 transitions. Word has length 173 [2022-01-10 19:08:19,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:19,680 INFO L470 AbstractCegarLoop]: Abstraction has 13272 states and 19582 transitions. [2022-01-10 19:08:19,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 19:08:19,680 INFO L276 IsEmpty]: Start isEmpty. Operand 13272 states and 19582 transitions. [2022-01-10 19:08:19,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-10 19:08:19,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:19,687 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] [2022-01-10 19:08:19,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:08:19,687 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:19,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:19,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1815929501, now seen corresponding path program 1 times [2022-01-10 19:08:19,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:19,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231407580] [2022-01-10 19:08:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:19,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:19,742 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 19:08:19,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:19,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231407580] [2022-01-10 19:08:19,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231407580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:19,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:19,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:19,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816254360] [2022-01-10 19:08:19,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:19,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:19,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:19,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:19,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:19,744 INFO L87 Difference]: Start difference. First operand 13272 states and 19582 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 19:08:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:21,220 INFO L93 Difference]: Finished difference Result 35826 states and 53056 transitions. [2022-01-10 19:08:21,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:21,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 174 [2022-01-10 19:08:21,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:21,272 INFO L225 Difference]: With dead ends: 35826 [2022-01-10 19:08:21,273 INFO L226 Difference]: Without dead ends: 26335 [2022-01-10 19:08:21,290 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 19:08:21,290 INFO L933 BasicCegarLoop]: 902 mSDtfsCounter, 437 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:21,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1361 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26335 states. [2022-01-10 19:08:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26335 to 13282. [2022-01-10 19:08:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13282 states, 13281 states have (on average 1.4751901212258114) internal successors, (19592), 13281 states have internal predecessors, (19592), 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 19:08:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13282 states to 13282 states and 19592 transitions. [2022-01-10 19:08:22,290 INFO L78 Accepts]: Start accepts. Automaton has 13282 states and 19592 transitions. Word has length 174 [2022-01-10 19:08:22,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:22,290 INFO L470 AbstractCegarLoop]: Abstraction has 13282 states and 19592 transitions. [2022-01-10 19:08:22,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 19:08:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 13282 states and 19592 transitions. [2022-01-10 19:08:22,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 19:08:22,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:22,295 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] [2022-01-10 19:08:22,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:08:22,295 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:22,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:22,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1455221352, now seen corresponding path program 1 times [2022-01-10 19:08:22,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:22,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46795558] [2022-01-10 19:08:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:22,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:22,404 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 19:08:22,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:22,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46795558] [2022-01-10 19:08:22,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46795558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:22,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:22,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:08:22,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298744858] [2022-01-10 19:08:22,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:22,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:08:22,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:22,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:08:22,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:08:22,405 INFO L87 Difference]: Start difference. First operand 13282 states and 19592 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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 19:08:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:24,148 INFO L93 Difference]: Finished difference Result 34535 states and 50975 transitions. [2022-01-10 19:08:24,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:08:24,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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 175 [2022-01-10 19:08:24,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:24,182 INFO L225 Difference]: With dead ends: 34535 [2022-01-10 19:08:24,183 INFO L226 Difference]: Without dead ends: 22281 [2022-01-10 19:08:24,193 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 19:08:24,194 INFO L933 BasicCegarLoop]: 1069 mSDtfsCounter, 1447 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:24,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 1922 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:24,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22281 states. [2022-01-10 19:08:25,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22281 to 13540. [2022-01-10 19:08:25,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13540 states, 13539 states have (on average 1.467612083610311) internal successors, (19870), 13539 states have internal predecessors, (19870), 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 19:08:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13540 states to 13540 states and 19870 transitions. [2022-01-10 19:08:25,234 INFO L78 Accepts]: Start accepts. Automaton has 13540 states and 19870 transitions. Word has length 175 [2022-01-10 19:08:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:25,235 INFO L470 AbstractCegarLoop]: Abstraction has 13540 states and 19870 transitions. [2022-01-10 19:08:25,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 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 19:08:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 13540 states and 19870 transitions. [2022-01-10 19:08:25,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-10 19:08:25,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:25,240 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] [2022-01-10 19:08:25,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:08:25,240 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:25,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:25,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1339165820, now seen corresponding path program 1 times [2022-01-10 19:08:25,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:25,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960368514] [2022-01-10 19:08:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:25,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:25,371 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 19:08:25,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:25,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960368514] [2022-01-10 19:08:25,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960368514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:25,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:25,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:25,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547001213] [2022-01-10 19:08:25,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:25,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:25,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:25,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:25,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:25,373 INFO L87 Difference]: Start difference. First operand 13540 states and 19870 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 19:08:26,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:26,286 INFO L93 Difference]: Finished difference Result 22187 states and 32660 transitions. [2022-01-10 19:08:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:26,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 175 [2022-01-10 19:08:26,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:26,305 INFO L225 Difference]: With dead ends: 22187 [2022-01-10 19:08:26,305 INFO L226 Difference]: Without dead ends: 12251 [2022-01-10 19:08:26,317 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 19:08:26,317 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 23 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:26,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 1412 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12251 states. [2022-01-10 19:08:27,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12251 to 12251. [2022-01-10 19:08:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12251 states, 12250 states have (on average 1.4707755102040816) internal successors, (18017), 12250 states have internal predecessors, (18017), 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 19:08:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12251 states to 12251 states and 18017 transitions. [2022-01-10 19:08:27,264 INFO L78 Accepts]: Start accepts. Automaton has 12251 states and 18017 transitions. Word has length 175 [2022-01-10 19:08:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:27,264 INFO L470 AbstractCegarLoop]: Abstraction has 12251 states and 18017 transitions. [2022-01-10 19:08:27,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 19:08:27,264 INFO L276 IsEmpty]: Start isEmpty. Operand 12251 states and 18017 transitions. [2022-01-10 19:08:27,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-10 19:08:27,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:27,269 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] [2022-01-10 19:08:27,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 19:08:27,269 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:27,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:27,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1108543592, now seen corresponding path program 1 times [2022-01-10 19:08:27,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:27,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024178760] [2022-01-10 19:08:27,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:27,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:27,382 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 19:08:27,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:27,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024178760] [2022-01-10 19:08:27,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024178760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:27,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:27,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:27,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223930226] [2022-01-10 19:08:27,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:27,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:27,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:27,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:27,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:27,384 INFO L87 Difference]: Start difference. First operand 12251 states and 18017 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 19:08:29,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:29,302 INFO L93 Difference]: Finished difference Result 34304 states and 51549 transitions. [2022-01-10 19:08:29,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:08:29,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 178 [2022-01-10 19:08:29,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:29,331 INFO L225 Difference]: With dead ends: 34304 [2022-01-10 19:08:29,331 INFO L226 Difference]: Without dead ends: 24402 [2022-01-10 19:08:29,339 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 19:08:29,339 INFO L933 BasicCegarLoop]: 995 mSDtfsCounter, 705 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:29,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 2162 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24402 states. [2022-01-10 19:08:30,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24402 to 12753. [2022-01-10 19:08:30,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12753 states, 12752 states have (on average 1.4564774153074027) internal successors, (18573), 12752 states have internal predecessors, (18573), 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 19:08:30,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12753 states to 12753 states and 18573 transitions. [2022-01-10 19:08:30,380 INFO L78 Accepts]: Start accepts. Automaton has 12753 states and 18573 transitions. Word has length 178 [2022-01-10 19:08:30,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:30,381 INFO L470 AbstractCegarLoop]: Abstraction has 12753 states and 18573 transitions. [2022-01-10 19:08:30,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 19:08:30,381 INFO L276 IsEmpty]: Start isEmpty. Operand 12753 states and 18573 transitions. [2022-01-10 19:08:30,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-10 19:08:30,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:30,386 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] [2022-01-10 19:08:30,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:08:30,386 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:30,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:30,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1228663465, now seen corresponding path program 1 times [2022-01-10 19:08:30,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:30,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132742463] [2022-01-10 19:08:30,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:30,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:30,549 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 19:08:30,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:30,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132742463] [2022-01-10 19:08:30,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132742463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:30,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:30,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:30,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561147209] [2022-01-10 19:08:30,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:30,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:30,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:30,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:30,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:30,552 INFO L87 Difference]: Start difference. First operand 12753 states and 18573 transitions. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 19:08:32,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:32,524 INFO L93 Difference]: Finished difference Result 34728 states and 51877 transitions. [2022-01-10 19:08:32,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:08:32,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 178 [2022-01-10 19:08:32,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:32,575 INFO L225 Difference]: With dead ends: 34728 [2022-01-10 19:08:32,576 INFO L226 Difference]: Without dead ends: 25067 [2022-01-10 19:08:32,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 19:08:32,590 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 703 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:32,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [703 Valid, 2105 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25067 states. [2022-01-10 19:08:33,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25067 to 13730. [2022-01-10 19:08:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13730 states, 13729 states have (on average 1.4333891761963726) internal successors, (19679), 13729 states have internal predecessors, (19679), 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 19:08:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13730 states to 13730 states and 19679 transitions. [2022-01-10 19:08:33,771 INFO L78 Accepts]: Start accepts. Automaton has 13730 states and 19679 transitions. Word has length 178 [2022-01-10 19:08:33,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:33,772 INFO L470 AbstractCegarLoop]: Abstraction has 13730 states and 19679 transitions. [2022-01-10 19:08:33,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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 19:08:33,772 INFO L276 IsEmpty]: Start isEmpty. Operand 13730 states and 19679 transitions. [2022-01-10 19:08:33,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-10 19:08:33,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:33,777 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] [2022-01-10 19:08:33,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:08:33,778 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:33,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:33,778 INFO L85 PathProgramCache]: Analyzing trace with hash 744988138, now seen corresponding path program 1 times [2022-01-10 19:08:33,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:33,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579248242] [2022-01-10 19:08:33,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:33,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:34,523 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 19:08:34,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:34,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579248242] [2022-01-10 19:08:34,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579248242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:34,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:34,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 19:08:34,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556832634] [2022-01-10 19:08:34,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:34,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 19:08:34,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:34,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 19:08:34,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 19:08:34,525 INFO L87 Difference]: Start difference. First operand 13730 states and 19679 transitions. Second operand has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 8 states have internal predecessors, (178), 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 19:09:00,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:09:00,141 INFO L93 Difference]: Finished difference Result 97542 states and 146892 transitions. [2022-01-10 19:09:00,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 19:09:00,142 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 8 states have internal predecessors, (178), 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 178 [2022-01-10 19:09:00,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:09:00,277 INFO L225 Difference]: With dead ends: 97542 [2022-01-10 19:09:00,277 INFO L226 Difference]: Without dead ends: 88472 [2022-01-10 19:09:00,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=226, Invalid=476, Unknown=0, NotChecked=0, Total=702 [2022-01-10 19:09:00,305 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 5106 mSDsluCounter, 3242 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5106 SdHoareTripleChecker+Valid, 4166 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-10 19:09:00,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5106 Valid, 4166 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-01-10 19:09:00,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88472 states.