/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+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:07:52,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:07:52,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:07:52,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 19:07:52,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 19:07:52,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 19:07:52,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 19:07:52,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 19:07:52,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 19:07:52,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 19:07:52,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 19:07:52,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 19:07:52,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:07:52,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:07:52,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:07:52,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:07:52,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:07:52,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:07:52,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:07:52,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:07:52,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:07:52,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:07:52,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:07:52,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:07:52,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 19:07:52,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 19:07:52,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 19:07:52,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 19:07:52,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 19:07:52,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 19:07:52,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 19:07:52,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 19:07:52,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 19:07:52,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 19:07:52,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 19:07:52,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 19:07:52,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 19:07:52,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 19:07:52,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:07:52,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:07:52,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:07:52,888 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 19:07:52,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:07:52,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:07:52,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:07:52,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:07:52,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:07:52,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:07:52,907 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:07:52,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:07:52,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:07:52,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:07:52,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:07:52,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:07:52,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:07:52,908 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:07:52,908 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:07:52,908 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:07:52,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:07:52,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:07:52,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:07:52,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:07:52,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:07:52,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:07:52,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:07:52,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:07:52,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:07:52,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:07:52,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:07:52,909 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:07:52,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:07:52,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:07:52,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:07:52,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:07:52,911 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:07:52,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:07:53,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:07:53,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:07:53,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:07:53,101 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:07:53,102 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:07:53,103 INFO L432 ainManager$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+cfa-reducer.c [2022-01-10 19:07:53,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b20fcd46/90e765d66d6e45fd8e4801f567778ed4/FLAG9ba9f8a20 [2022-01-10 19:07:53,539 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:07:53,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 19:07:53,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b20fcd46/90e765d66d6e45fd8e4801f567778ed4/FLAG9ba9f8a20 [2022-01-10 19:07:53,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b20fcd46/90e765d66d6e45fd8e4801f567778ed4 [2022-01-10 19:07:53,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:07:53,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:07:53,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:07:53,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:07:53,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:07:53,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:07:53" (1/1) ... [2022-01-10 19:07:53,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383df26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:53, skipping insertion in model container [2022-01-10 19:07:53,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:07:53" (1/1) ... [2022-01-10 19:07:53,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:07:53,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:07:53,789 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+cfa-reducer.c[7920,7933] [2022-01-10 19:07:53,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:07:53,818 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:07:53,849 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+cfa-reducer.c[7920,7933] [2022-01-10 19:07:53,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:07:53,875 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:07:53,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:53 WrapperNode [2022-01-10 19:07:53,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:07:53,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:07:53,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:07:53,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:07:53,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:53" (1/1) ... [2022-01-10 19:07:53,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:53" (1/1) ... [2022-01-10 19:07:53,919 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 620 [2022-01-10 19:07:53,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:07:53,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:07:53,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:07:53,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:07:53,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:53" (1/1) ... [2022-01-10 19:07:53,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:53" (1/1) ... [2022-01-10 19:07:53,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:53" (1/1) ... [2022-01-10 19:07:53,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:53" (1/1) ... [2022-01-10 19:07:53,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:53" (1/1) ... [2022-01-10 19:07:53,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:53" (1/1) ... [2022-01-10 19:07:53,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:53" (1/1) ... [2022-01-10 19:07:53,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:07:53,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:07:53,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:07:53,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:07:53,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:53" (1/1) ... [2022-01-10 19:07:53,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:07:53,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:07:53,995 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 19:07:54,001 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 19:07:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:07:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:07:54,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:07:54,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:07:54,123 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:07:54,124 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:07:54,492 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:07:54,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:07:54,498 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 19:07:54,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:07:54 BoogieIcfgContainer [2022-01-10 19:07:54,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:07:54,500 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:07:54,500 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:07:54,501 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:07:54,503 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:07:54" (1/1) ... [2022-01-10 19:07:54,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:07:54 BasicIcfg [2022-01-10 19:07:54,712 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:07:54,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:07:54,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:07:54,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:07:54,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:07:53" (1/4) ... [2022-01-10 19:07:54,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65832409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:07:54, skipping insertion in model container [2022-01-10 19:07:54,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:07:53" (2/4) ... [2022-01-10 19:07:54,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65832409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:07:54, skipping insertion in model container [2022-01-10 19:07:54,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:07:54" (3/4) ... [2022-01-10 19:07:54,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65832409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:07:54, skipping insertion in model container [2022-01-10 19:07:54,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:07:54" (4/4) ... [2022-01-10 19:07:54,720 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 19:07:54,723 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:07:54,724 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 19:07:54,768 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:07:54,773 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 19:07:54,774 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 19:07:54,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 154 states have internal predecessors, (267), 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 19:07:54,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 19:07:54,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:54,797 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] [2022-01-10 19:07:54,797 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:54,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash -403049593, now seen corresponding path program 1 times [2022-01-10 19:07:54,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:54,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198874530] [2022-01-10 19:07:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:54,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:55,312 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 19:07:55,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:55,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198874530] [2022-01-10 19:07:55,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198874530] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:55,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:55,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:55,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555881836] [2022-01-10 19:07:55,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:55,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:55,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:55,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:55,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:55,346 INFO L87 Difference]: Start difference. First operand has 155 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 154 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 19:07:55,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:55,429 INFO L93 Difference]: Finished difference Result 343 states and 575 transitions. [2022-01-10 19:07:55,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:55,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-01-10 19:07:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:55,444 INFO L225 Difference]: With dead ends: 343 [2022-01-10 19:07:55,444 INFO L226 Difference]: Without dead ends: 239 [2022-01-10 19:07:55,447 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 19:07:55,450 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 160 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:55,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 474 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:55,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-01-10 19:07:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2022-01-10 19:07:55,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.5872340425531914) internal successors, (373), 235 states have internal predecessors, (373), 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 19:07:55,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 373 transitions. [2022-01-10 19:07:55,509 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 373 transitions. Word has length 62 [2022-01-10 19:07:55,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:55,509 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 373 transitions. [2022-01-10 19:07:55,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 19:07:55,510 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 373 transitions. [2022-01-10 19:07:55,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 19:07:55,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:55,511 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] [2022-01-10 19:07:55,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:07:55,512 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:55,512 INFO L85 PathProgramCache]: Analyzing trace with hash 352758929, now seen corresponding path program 1 times [2022-01-10 19:07:55,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:55,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344710243] [2022-01-10 19:07:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:55,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:55,652 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 19:07:55,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:55,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344710243] [2022-01-10 19:07:55,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344710243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:55,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:55,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:55,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431779878] [2022-01-10 19:07:55,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:55,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:55,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:55,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:55,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:55,657 INFO L87 Difference]: Start difference. First operand 236 states and 373 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 19:07:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:55,735 INFO L93 Difference]: Finished difference Result 661 states and 1039 transitions. [2022-01-10 19:07:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:55,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2022-01-10 19:07:55,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:55,738 INFO L225 Difference]: With dead ends: 661 [2022-01-10 19:07:55,738 INFO L226 Difference]: Without dead ends: 446 [2022-01-10 19:07:55,744 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 19:07:55,745 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 586 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:55,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 432 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:55,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-01-10 19:07:55,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 444. [2022-01-10 19:07:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.5711060948081264) internal successors, (696), 443 states have internal predecessors, (696), 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 19:07:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 696 transitions. [2022-01-10 19:07:55,780 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 696 transitions. Word has length 64 [2022-01-10 19:07:55,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:55,780 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 696 transitions. [2022-01-10 19:07:55,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 19:07:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 696 transitions. [2022-01-10 19:07:55,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 19:07:55,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:55,788 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] [2022-01-10 19:07:55,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:07:55,789 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:55,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:55,793 INFO L85 PathProgramCache]: Analyzing trace with hash 304060755, now seen corresponding path program 1 times [2022-01-10 19:07:55,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:55,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287537904] [2022-01-10 19:07:55,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:55,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:55,905 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 19:07:55,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:55,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287537904] [2022-01-10 19:07:55,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287537904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:55,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:55,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:55,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639632107] [2022-01-10 19:07:55,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:55,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:55,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:55,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:55,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:55,907 INFO L87 Difference]: Start difference. First operand 444 states and 696 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 19:07:55,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:55,960 INFO L93 Difference]: Finished difference Result 952 states and 1542 transitions. [2022-01-10 19:07:55,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:55,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-10 19:07:55,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:55,964 INFO L225 Difference]: With dead ends: 952 [2022-01-10 19:07:55,964 INFO L226 Difference]: Without dead ends: 608 [2022-01-10 19:07:55,967 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 19:07:55,971 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 142 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:55,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 444 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:55,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-01-10 19:07:55,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 592. [2022-01-10 19:07:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 1.5905245346869712) internal successors, (940), 591 states have internal predecessors, (940), 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 19:07:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 940 transitions. [2022-01-10 19:07:56,002 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 940 transitions. Word has length 65 [2022-01-10 19:07:56,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:56,003 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 940 transitions. [2022-01-10 19:07:56,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 19:07:56,003 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 940 transitions. [2022-01-10 19:07:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 19:07:56,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:56,005 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] [2022-01-10 19:07:56,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:07:56,005 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:56,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:56,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2044486492, now seen corresponding path program 1 times [2022-01-10 19:07:56,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:56,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052949007] [2022-01-10 19:07:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:56,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:56,095 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 19:07:56,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:56,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052949007] [2022-01-10 19:07:56,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052949007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:56,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:56,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:56,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657753866] [2022-01-10 19:07:56,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:56,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:56,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:56,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:56,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:56,099 INFO L87 Difference]: Start difference. First operand 592 states and 940 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 19:07:56,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:56,147 INFO L93 Difference]: Finished difference Result 1734 states and 2749 transitions. [2022-01-10 19:07:56,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:56,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2022-01-10 19:07:56,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:56,151 INFO L225 Difference]: With dead ends: 1734 [2022-01-10 19:07:56,151 INFO L226 Difference]: Without dead ends: 1166 [2022-01-10 19:07:56,152 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 19:07:56,157 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 208 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 662 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 19:07:56,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 662 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-01-10 19:07:56,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 594. [2022-01-10 19:07:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 1.5885328836424957) internal successors, (942), 593 states have internal predecessors, (942), 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 19:07:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 942 transitions. [2022-01-10 19:07:56,189 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 942 transitions. Word has length 65 [2022-01-10 19:07:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:56,189 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 942 transitions. [2022-01-10 19:07:56,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 19:07:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 942 transitions. [2022-01-10 19:07:56,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:07:56,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:56,191 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] [2022-01-10 19:07:56,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:07:56,191 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:56,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:56,191 INFO L85 PathProgramCache]: Analyzing trace with hash 890843596, now seen corresponding path program 1 times [2022-01-10 19:07:56,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:56,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230633812] [2022-01-10 19:07:56,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:56,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:56,341 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 19:07:56,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:56,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230633812] [2022-01-10 19:07:56,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230633812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:56,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:56,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:07:56,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182223825] [2022-01-10 19:07:56,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:56,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:07:56,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:56,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:07:56,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:07:56,342 INFO L87 Difference]: Start difference. First operand 594 states and 942 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 19:07:56,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:56,478 INFO L93 Difference]: Finished difference Result 2223 states and 3516 transitions. [2022-01-10 19:07:56,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:07:56,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2022-01-10 19:07:56,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:56,485 INFO L225 Difference]: With dead ends: 2223 [2022-01-10 19:07:56,485 INFO L226 Difference]: Without dead ends: 1649 [2022-01-10 19:07:56,487 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 19:07:56,487 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 727 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:56,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 934 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2022-01-10 19:07:56,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1075. [2022-01-10 19:07:56,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1074 states have (on average 1.5698324022346368) internal successors, (1686), 1074 states have internal predecessors, (1686), 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 19:07:56,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1686 transitions. [2022-01-10 19:07:56,579 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1686 transitions. Word has length 66 [2022-01-10 19:07:56,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:56,580 INFO L470 AbstractCegarLoop]: Abstraction has 1075 states and 1686 transitions. [2022-01-10 19:07:56,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 19:07:56,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1686 transitions. [2022-01-10 19:07:56,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 19:07:56,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:56,585 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] [2022-01-10 19:07:56,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:07:56,585 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:56,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:56,586 INFO L85 PathProgramCache]: Analyzing trace with hash 583245872, now seen corresponding path program 1 times [2022-01-10 19:07:56,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:56,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630584348] [2022-01-10 19:07:56,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:56,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:56,654 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 19:07:56,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:56,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630584348] [2022-01-10 19:07:56,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630584348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:56,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:56,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:56,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494690361] [2022-01-10 19:07:56,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:56,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:56,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:56,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:56,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:56,656 INFO L87 Difference]: Start difference. First operand 1075 states and 1686 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 19:07:56,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:56,725 INFO L93 Difference]: Finished difference Result 1929 states and 3024 transitions. [2022-01-10 19:07:56,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:56,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-01-10 19:07:56,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:56,729 INFO L225 Difference]: With dead ends: 1929 [2022-01-10 19:07:56,729 INFO L226 Difference]: Without dead ends: 876 [2022-01-10 19:07:56,730 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 19:07:56,732 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 47 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 722 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 19:07:56,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 722 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:56,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-01-10 19:07:56,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 875. [2022-01-10 19:07:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 1.568649885583524) internal successors, (1371), 874 states have internal predecessors, (1371), 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 19:07:56,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1371 transitions. [2022-01-10 19:07:56,786 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1371 transitions. Word has length 66 [2022-01-10 19:07:56,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:56,786 INFO L470 AbstractCegarLoop]: Abstraction has 875 states and 1371 transitions. [2022-01-10 19:07:56,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 19:07:56,787 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1371 transitions. [2022-01-10 19:07:56,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 19:07:56,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:56,787 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] [2022-01-10 19:07:56,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:07:56,788 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:56,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1015387210, now seen corresponding path program 1 times [2022-01-10 19:07:56,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:56,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974372905] [2022-01-10 19:07:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:56,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:56,849 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 19:07:56,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:56,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974372905] [2022-01-10 19:07:56,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974372905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:56,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:56,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:56,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150496296] [2022-01-10 19:07:56,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:56,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:56,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:56,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:56,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:56,850 INFO L87 Difference]: Start difference. First operand 875 states and 1371 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 19:07:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:56,922 INFO L93 Difference]: Finished difference Result 1658 states and 2660 transitions. [2022-01-10 19:07:56,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:56,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-01-10 19:07:56,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:56,926 INFO L225 Difference]: With dead ends: 1658 [2022-01-10 19:07:56,926 INFO L226 Difference]: Without dead ends: 1165 [2022-01-10 19:07:56,927 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 19:07:56,928 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 134 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:56,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 499 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:56,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-01-10 19:07:56,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1163. [2022-01-10 19:07:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 1.585197934595525) internal successors, (1842), 1162 states have internal predecessors, (1842), 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 19:07:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1842 transitions. [2022-01-10 19:07:56,987 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1842 transitions. Word has length 67 [2022-01-10 19:07:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:56,988 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1842 transitions. [2022-01-10 19:07:56,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 19:07:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1842 transitions. [2022-01-10 19:07:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 19:07:56,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:56,991 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] [2022-01-10 19:07:56,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:07:56,991 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:56,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:56,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1252622793, now seen corresponding path program 1 times [2022-01-10 19:07:56,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:56,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275738054] [2022-01-10 19:07:56,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:56,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:57,036 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 19:07:57,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:57,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275738054] [2022-01-10 19:07:57,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275738054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:57,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:57,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:57,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554349945] [2022-01-10 19:07:57,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:57,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:57,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:57,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:57,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:57,038 INFO L87 Difference]: Start difference. First operand 1163 states and 1842 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 19:07:57,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:57,105 INFO L93 Difference]: Finished difference Result 2315 states and 3657 transitions. [2022-01-10 19:07:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:57,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-01-10 19:07:57,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:57,110 INFO L225 Difference]: With dead ends: 2315 [2022-01-10 19:07:57,110 INFO L226 Difference]: Without dead ends: 1550 [2022-01-10 19:07:57,111 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 19:07:57,111 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 205 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 459 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 19:07:57,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 459 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:57,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2022-01-10 19:07:57,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1163. [2022-01-10 19:07:57,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 1.5834767641996557) internal successors, (1840), 1162 states have internal predecessors, (1840), 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 19:07:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1840 transitions. [2022-01-10 19:07:57,178 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1840 transitions. Word has length 69 [2022-01-10 19:07:57,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:57,178 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1840 transitions. [2022-01-10 19:07:57,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 19:07:57,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1840 transitions. [2022-01-10 19:07:57,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 19:07:57,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:57,181 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] [2022-01-10 19:07:57,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:07:57,181 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:57,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:57,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1991829530, now seen corresponding path program 1 times [2022-01-10 19:07:57,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:57,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172079020] [2022-01-10 19:07:57,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:57,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:57,265 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 19:07:57,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:57,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172079020] [2022-01-10 19:07:57,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172079020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:57,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:57,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:57,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729266967] [2022-01-10 19:07:57,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:57,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:57,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:57,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:57,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:57,268 INFO L87 Difference]: Start difference. First operand 1163 states and 1840 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 19:07:57,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:57,388 INFO L93 Difference]: Finished difference Result 2814 states and 4528 transitions. [2022-01-10 19:07:57,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:57,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2022-01-10 19:07:57,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:57,394 INFO L225 Difference]: With dead ends: 2814 [2022-01-10 19:07:57,394 INFO L226 Difference]: Without dead ends: 1844 [2022-01-10 19:07:57,397 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 19:07:57,398 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 131 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:57,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 395 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:57,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-01-10 19:07:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1830. [2022-01-10 19:07:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1829 states have (on average 1.5587752870420994) internal successors, (2851), 1829 states have internal predecessors, (2851), 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 19:07:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2851 transitions. [2022-01-10 19:07:57,500 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2851 transitions. Word has length 70 [2022-01-10 19:07:57,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:57,500 INFO L470 AbstractCegarLoop]: Abstraction has 1830 states and 2851 transitions. [2022-01-10 19:07:57,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 19:07:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2851 transitions. [2022-01-10 19:07:57,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 19:07:57,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:57,501 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] [2022-01-10 19:07:57,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:07:57,502 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:57,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:57,502 INFO L85 PathProgramCache]: Analyzing trace with hash 636458944, now seen corresponding path program 1 times [2022-01-10 19:07:57,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:57,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410722427] [2022-01-10 19:07:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:57,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:57,551 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 19:07:57,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:57,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410722427] [2022-01-10 19:07:57,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410722427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:57,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:57,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:57,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219974152] [2022-01-10 19:07:57,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:57,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:57,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:57,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:57,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:57,553 INFO L87 Difference]: Start difference. First operand 1830 states and 2851 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 19:07:57,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:57,730 INFO L93 Difference]: Finished difference Result 5077 states and 7972 transitions. [2022-01-10 19:07:57,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:57,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-01-10 19:07:57,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:57,740 INFO L225 Difference]: With dead ends: 5077 [2022-01-10 19:07:57,740 INFO L226 Difference]: Without dead ends: 3475 [2022-01-10 19:07:57,742 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 19:07:57,743 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 159 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:57,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 631 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2022-01-10 19:07:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3473. [2022-01-10 19:07:57,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3473 states, 3472 states have (on average 1.5495391705069124) internal successors, (5380), 3472 states have internal predecessors, (5380), 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 19:07:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3473 states to 3473 states and 5380 transitions. [2022-01-10 19:07:57,922 INFO L78 Accepts]: Start accepts. Automaton has 3473 states and 5380 transitions. Word has length 72 [2022-01-10 19:07:57,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:57,923 INFO L470 AbstractCegarLoop]: Abstraction has 3473 states and 5380 transitions. [2022-01-10 19:07:57,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 19:07:57,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3473 states and 5380 transitions. [2022-01-10 19:07:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 19:07:57,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:57,924 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] [2022-01-10 19:07:57,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:07:57,924 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:57,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:57,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1171388577, now seen corresponding path program 1 times [2022-01-10 19:07:57,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:57,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304227858] [2022-01-10 19:07:57,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:57,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:57,981 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 19:07:57,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:57,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304227858] [2022-01-10 19:07:57,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304227858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:57,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:57,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:07:57,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614427948] [2022-01-10 19:07:57,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:57,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:07:57,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:57,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:07:57,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:07:57,983 INFO L87 Difference]: Start difference. First operand 3473 states and 5380 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 19:07:58,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:58,219 INFO L93 Difference]: Finished difference Result 7404 states and 11543 transitions. [2022-01-10 19:07:58,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:07:58,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2022-01-10 19:07:58,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:58,237 INFO L225 Difference]: With dead ends: 7404 [2022-01-10 19:07:58,237 INFO L226 Difference]: Without dead ends: 4149 [2022-01-10 19:07:58,240 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 19:07:58,240 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 633 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:58,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 441 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:58,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4149 states. [2022-01-10 19:07:58,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4149 to 3554. [2022-01-10 19:07:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 1.543484379397692) internal successors, (5484), 3553 states have internal predecessors, (5484), 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 19:07:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 5484 transitions. [2022-01-10 19:07:58,450 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 5484 transitions. Word has length 72 [2022-01-10 19:07:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:58,450 INFO L470 AbstractCegarLoop]: Abstraction has 3554 states and 5484 transitions. [2022-01-10 19:07:58,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 19:07:58,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 5484 transitions. [2022-01-10 19:07:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 19:07:58,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:58,452 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] [2022-01-10 19:07:58,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 19:07:58,452 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:58,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:58,453 INFO L85 PathProgramCache]: Analyzing trace with hash -831809736, now seen corresponding path program 1 times [2022-01-10 19:07:58,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:58,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167193815] [2022-01-10 19:07:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:58,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:58,504 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 19:07:58,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:58,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167193815] [2022-01-10 19:07:58,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167193815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:58,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:58,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:58,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785600761] [2022-01-10 19:07:58,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:58,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:58,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:58,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:58,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:58,506 INFO L87 Difference]: Start difference. First operand 3554 states and 5484 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 19:07:58,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:58,797 INFO L93 Difference]: Finished difference Result 8231 states and 12799 transitions. [2022-01-10 19:07:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:58,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-01-10 19:07:58,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:58,815 INFO L225 Difference]: With dead ends: 8231 [2022-01-10 19:07:58,815 INFO L226 Difference]: Without dead ends: 5086 [2022-01-10 19:07:58,820 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 19:07:58,821 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 135 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:07:58,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 457 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:58,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2022-01-10 19:07:59,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 4924. [2022-01-10 19:07:59,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4924 states, 4923 states have (on average 1.535039609993906) internal successors, (7557), 4923 states have internal predecessors, (7557), 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 19:07:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4924 states to 4924 states and 7557 transitions. [2022-01-10 19:07:59,105 INFO L78 Accepts]: Start accepts. Automaton has 4924 states and 7557 transitions. Word has length 73 [2022-01-10 19:07:59,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:07:59,105 INFO L470 AbstractCegarLoop]: Abstraction has 4924 states and 7557 transitions. [2022-01-10 19:07:59,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 19:07:59,106 INFO L276 IsEmpty]: Start isEmpty. Operand 4924 states and 7557 transitions. [2022-01-10 19:07:59,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 19:07:59,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:07:59,107 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] [2022-01-10 19:07:59,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 19:07:59,107 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:07:59,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:07:59,108 INFO L85 PathProgramCache]: Analyzing trace with hash -247714901, now seen corresponding path program 1 times [2022-01-10 19:07:59,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:07:59,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928279810] [2022-01-10 19:07:59,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:07:59,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:07:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:07:59,136 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 19:07:59,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:07:59,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928279810] [2022-01-10 19:07:59,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928279810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:07:59,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:07:59,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:07:59,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233522927] [2022-01-10 19:07:59,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:07:59,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:07:59,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:07:59,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:07:59,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:07:59,137 INFO L87 Difference]: Start difference. First operand 4924 states and 7557 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 19:07:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:07:59,574 INFO L93 Difference]: Finished difference Result 14592 states and 22434 transitions. [2022-01-10 19:07:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:07:59,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 73 [2022-01-10 19:07:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:07:59,605 INFO L225 Difference]: With dead ends: 14592 [2022-01-10 19:07:59,605 INFO L226 Difference]: Without dead ends: 9826 [2022-01-10 19:07:59,613 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 19:07:59,613 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 219 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 452 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 19:07:59,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 452 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:07:59,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9826 states. [2022-01-10 19:07:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9826 to 4927. [2022-01-10 19:07:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4927 states, 4926 states have (on average 1.5349167681688998) internal successors, (7561), 4926 states have internal predecessors, (7561), 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 19:08:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4927 states to 4927 states and 7561 transitions. [2022-01-10 19:08:00,004 INFO L78 Accepts]: Start accepts. Automaton has 4927 states and 7561 transitions. Word has length 73 [2022-01-10 19:08:00,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:00,005 INFO L470 AbstractCegarLoop]: Abstraction has 4927 states and 7561 transitions. [2022-01-10 19:08:00,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 19:08:00,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4927 states and 7561 transitions. [2022-01-10 19:08:00,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 19:08:00,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:00,007 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] [2022-01-10 19:08:00,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 19:08:00,007 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:00,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:00,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1348856448, now seen corresponding path program 1 times [2022-01-10 19:08:00,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:00,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794894724] [2022-01-10 19:08:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:00,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:00,083 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 19:08:00,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:00,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794894724] [2022-01-10 19:08:00,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794894724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:00,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:00,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:08:00,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105663241] [2022-01-10 19:08:00,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:00,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:08:00,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:00,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:08:00,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:08:00,085 INFO L87 Difference]: Start difference. First operand 4927 states and 7561 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 19:08:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:00,959 INFO L93 Difference]: Finished difference Result 19296 states and 29611 transitions. [2022-01-10 19:08:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:08:00,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2022-01-10 19:08:00,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:00,990 INFO L225 Difference]: With dead ends: 19296 [2022-01-10 19:08:00,990 INFO L226 Difference]: Without dead ends: 14465 [2022-01-10 19:08:00,998 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 19:08:00,998 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 891 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:00,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 703 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:01,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14465 states. [2022-01-10 19:08:01,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14465 to 9632. [2022-01-10 19:08:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9632 states, 9631 states have (on average 1.5269442425500985) internal successors, (14706), 9631 states have internal predecessors, (14706), 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 19:08:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9632 states to 9632 states and 14706 transitions. [2022-01-10 19:08:01,771 INFO L78 Accepts]: Start accepts. Automaton has 9632 states and 14706 transitions. Word has length 74 [2022-01-10 19:08:01,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:01,771 INFO L470 AbstractCegarLoop]: Abstraction has 9632 states and 14706 transitions. [2022-01-10 19:08:01,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 19:08:01,771 INFO L276 IsEmpty]: Start isEmpty. Operand 9632 states and 14706 transitions. [2022-01-10 19:08:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 19:08:01,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:01,774 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] [2022-01-10 19:08:01,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 19:08:01,774 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:01,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:01,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1495911614, now seen corresponding path program 1 times [2022-01-10 19:08:01,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:01,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770506108] [2022-01-10 19:08:01,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:01,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:01,824 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 19:08:01,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:01,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770506108] [2022-01-10 19:08:01,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770506108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:01,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:01,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:01,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392825548] [2022-01-10 19:08:01,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:01,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:01,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:01,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:01,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:01,826 INFO L87 Difference]: Start difference. First operand 9632 states and 14706 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 19:08:02,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:02,424 INFO L93 Difference]: Finished difference Result 16962 states and 25852 transitions. [2022-01-10 19:08:02,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:02,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 74 [2022-01-10 19:08:02,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:02,437 INFO L225 Difference]: With dead ends: 16962 [2022-01-10 19:08:02,437 INFO L226 Difference]: Without dead ends: 7338 [2022-01-10 19:08:02,446 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 19:08:02,447 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 61 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 720 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 19:08:02,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 720 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:02,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7338 states. [2022-01-10 19:08:02,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7338 to 7338. [2022-01-10 19:08:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7338 states, 7337 states have (on average 1.5205124710372087) internal successors, (11156), 7337 states have internal predecessors, (11156), 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 19:08:02,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7338 states to 7338 states and 11156 transitions. [2022-01-10 19:08:02,930 INFO L78 Accepts]: Start accepts. Automaton has 7338 states and 11156 transitions. Word has length 74 [2022-01-10 19:08:02,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:02,930 INFO L470 AbstractCegarLoop]: Abstraction has 7338 states and 11156 transitions. [2022-01-10 19:08:02,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 19:08:02,931 INFO L276 IsEmpty]: Start isEmpty. Operand 7338 states and 11156 transitions. [2022-01-10 19:08:02,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 19:08:02,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:02,933 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] [2022-01-10 19:08:02,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 19:08:02,933 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:02,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:02,933 INFO L85 PathProgramCache]: Analyzing trace with hash -659127877, now seen corresponding path program 1 times [2022-01-10 19:08:02,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:02,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423038719] [2022-01-10 19:08:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:02,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:03,010 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 19:08:03,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:03,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423038719] [2022-01-10 19:08:03,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423038719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:03,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:03,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:03,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700250692] [2022-01-10 19:08:03,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:03,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:03,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:03,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:03,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:03,012 INFO L87 Difference]: Start difference. First operand 7338 states and 11156 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 19:08:03,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:03,548 INFO L93 Difference]: Finished difference Result 15958 states and 24670 transitions. [2022-01-10 19:08:03,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:03,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2022-01-10 19:08:03,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:03,563 INFO L225 Difference]: With dead ends: 15958 [2022-01-10 19:08:03,564 INFO L226 Difference]: Without dead ends: 9167 [2022-01-10 19:08:03,573 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 19:08:03,573 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 138 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:03,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 510 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:03,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9167 states. [2022-01-10 19:08:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9167 to 9165. [2022-01-10 19:08:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9165 states, 9164 states have (on average 1.5401571366215627) internal successors, (14114), 9164 states have internal predecessors, (14114), 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 19:08:04,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9165 states to 9165 states and 14114 transitions. [2022-01-10 19:08:04,217 INFO L78 Accepts]: Start accepts. Automaton has 9165 states and 14114 transitions. Word has length 75 [2022-01-10 19:08:04,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:04,217 INFO L470 AbstractCegarLoop]: Abstraction has 9165 states and 14114 transitions. [2022-01-10 19:08:04,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 19:08:04,217 INFO L276 IsEmpty]: Start isEmpty. Operand 9165 states and 14114 transitions. [2022-01-10 19:08:04,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 19:08:04,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:04,219 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] [2022-01-10 19:08:04,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 19:08:04,219 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2001843853, now seen corresponding path program 1 times [2022-01-10 19:08:04,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:04,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262575997] [2022-01-10 19:08:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:04,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:04,301 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 19:08:04,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:04,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262575997] [2022-01-10 19:08:04,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262575997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:04,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:04,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:04,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658307763] [2022-01-10 19:08:04,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:04,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:04,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:04,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:04,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:04,302 INFO L87 Difference]: Start difference. First operand 9165 states and 14114 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 19:08:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:05,711 INFO L93 Difference]: Finished difference Result 25345 states and 39436 transitions. [2022-01-10 19:08:05,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:05,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2022-01-10 19:08:05,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:05,742 INFO L225 Difference]: With dead ends: 25345 [2022-01-10 19:08:05,742 INFO L226 Difference]: Without dead ends: 16727 [2022-01-10 19:08:05,756 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 19:08:05,756 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 119 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:05,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 421 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16727 states. [2022-01-10 19:08:06,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16727 to 16581. [2022-01-10 19:08:06,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16581 states, 16580 states have (on average 1.5395657418576598) internal successors, (25526), 16580 states have internal predecessors, (25526), 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 19:08:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16581 states to 16581 states and 25526 transitions. [2022-01-10 19:08:06,999 INFO L78 Accepts]: Start accepts. Automaton has 16581 states and 25526 transitions. Word has length 78 [2022-01-10 19:08:06,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:06,999 INFO L470 AbstractCegarLoop]: Abstraction has 16581 states and 25526 transitions. [2022-01-10 19:08:06,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 19:08:06,999 INFO L276 IsEmpty]: Start isEmpty. Operand 16581 states and 25526 transitions. [2022-01-10 19:08:07,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 19:08:07,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:07,001 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] [2022-01-10 19:08:07,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 19:08:07,001 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:07,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:07,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1817454921, now seen corresponding path program 1 times [2022-01-10 19:08:07,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:07,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493149772] [2022-01-10 19:08:07,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:07,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:07,058 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 19:08:07,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:07,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493149772] [2022-01-10 19:08:07,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493149772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:07,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:07,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:07,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215557144] [2022-01-10 19:08:07,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:07,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:07,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:07,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:07,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:07,059 INFO L87 Difference]: Start difference. First operand 16581 states and 25526 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 19:08:08,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:08,806 INFO L93 Difference]: Finished difference Result 42537 states and 65649 transitions. [2022-01-10 19:08:08,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:08,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2022-01-10 19:08:08,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:08,844 INFO L225 Difference]: With dead ends: 42537 [2022-01-10 19:08:08,844 INFO L226 Difference]: Without dead ends: 26503 [2022-01-10 19:08:08,862 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 19:08:08,863 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 143 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:08,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 601 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:08,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26503 states. [2022-01-10 19:08:10,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26503 to 26501. [2022-01-10 19:08:10,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26501 states, 26500 states have (on average 1.524490566037736) internal successors, (40399), 26500 states have internal predecessors, (40399), 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 19:08:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26501 states to 26501 states and 40399 transitions. [2022-01-10 19:08:10,799 INFO L78 Accepts]: Start accepts. Automaton has 26501 states and 40399 transitions. Word has length 80 [2022-01-10 19:08:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:10,799 INFO L470 AbstractCegarLoop]: Abstraction has 26501 states and 40399 transitions. [2022-01-10 19:08:10,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 19:08:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 26501 states and 40399 transitions. [2022-01-10 19:08:10,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 19:08:10,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:10,801 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] [2022-01-10 19:08:10,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 19:08:10,802 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:10,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:10,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1166164400, now seen corresponding path program 1 times [2022-01-10 19:08:10,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:10,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752296817] [2022-01-10 19:08:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:10,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:10,851 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 19:08:10,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:10,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752296817] [2022-01-10 19:08:10,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752296817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:10,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:10,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:10,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222545279] [2022-01-10 19:08:10,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:10,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:10,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:10,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:10,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:10,853 INFO L87 Difference]: Start difference. First operand 26501 states and 40399 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 19:08:12,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:12,398 INFO L93 Difference]: Finished difference Result 49646 states and 75613 transitions. [2022-01-10 19:08:12,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:12,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 80 [2022-01-10 19:08:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:12,434 INFO L225 Difference]: With dead ends: 49646 [2022-01-10 19:08:12,434 INFO L226 Difference]: Without dead ends: 23170 [2022-01-10 19:08:12,458 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 19:08:12,458 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 51 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 710 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 19:08:12,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 710 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:12,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23170 states. [2022-01-10 19:08:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23170 to 23170. [2022-01-10 19:08:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23170 states, 23169 states have (on average 1.521300012948336) internal successors, (35247), 23169 states have internal predecessors, (35247), 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 19:08:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23170 states to 23170 states and 35247 transitions. [2022-01-10 19:08:14,093 INFO L78 Accepts]: Start accepts. Automaton has 23170 states and 35247 transitions. Word has length 80 [2022-01-10 19:08:14,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:14,093 INFO L470 AbstractCegarLoop]: Abstraction has 23170 states and 35247 transitions. [2022-01-10 19:08:14,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 19:08:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 23170 states and 35247 transitions. [2022-01-10 19:08:14,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 19:08:14,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:14,095 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] [2022-01-10 19:08:14,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 19:08:14,095 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:14,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:14,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2097093016, now seen corresponding path program 1 times [2022-01-10 19:08:14,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:14,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259830523] [2022-01-10 19:08:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:14,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:14,156 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 19:08:14,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:14,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259830523] [2022-01-10 19:08:14,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259830523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:14,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:14,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:14,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143733792] [2022-01-10 19:08:14,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:14,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:14,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:14,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:14,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:14,157 INFO L87 Difference]: Start difference. First operand 23170 states and 35247 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 19:08:17,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:17,062 INFO L93 Difference]: Finished difference Result 58590 states and 89244 transitions. [2022-01-10 19:08:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:17,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2022-01-10 19:08:17,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:17,122 INFO L225 Difference]: With dead ends: 58590 [2022-01-10 19:08:17,122 INFO L226 Difference]: Without dead ends: 36060 [2022-01-10 19:08:17,143 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 19:08:17,143 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 149 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:17,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 619 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36060 states. [2022-01-10 19:08:19,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36060 to 36058. [2022-01-10 19:08:19,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36058 states, 36057 states have (on average 1.5034528662950328) internal successors, (54210), 36057 states have internal predecessors, (54210), 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 19:08:19,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36058 states to 36058 states and 54210 transitions. [2022-01-10 19:08:19,707 INFO L78 Accepts]: Start accepts. Automaton has 36058 states and 54210 transitions. Word has length 80 [2022-01-10 19:08:19,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:19,707 INFO L470 AbstractCegarLoop]: Abstraction has 36058 states and 54210 transitions. [2022-01-10 19:08:19,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 19:08:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand 36058 states and 54210 transitions. [2022-01-10 19:08:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 19:08:19,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:19,710 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] [2022-01-10 19:08:19,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 19:08:19,710 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:19,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2070884042, now seen corresponding path program 1 times [2022-01-10 19:08:19,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:19,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061795310] [2022-01-10 19:08:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:19,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:19,764 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 19:08:19,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:19,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061795310] [2022-01-10 19:08:19,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061795310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:19,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:19,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:19,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243871593] [2022-01-10 19:08:19,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:19,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:19,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:19,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:19,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:19,765 INFO L87 Difference]: Start difference. First operand 36058 states and 54210 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 19:08:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:23,392 INFO L93 Difference]: Finished difference Result 81062 states and 122284 transitions. [2022-01-10 19:08:23,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:23,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2022-01-10 19:08:23,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:23,480 INFO L225 Difference]: With dead ends: 81062 [2022-01-10 19:08:23,480 INFO L226 Difference]: Without dead ends: 50356 [2022-01-10 19:08:23,505 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 19:08:23,506 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 126 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:23,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 437 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:23,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50356 states. [2022-01-10 19:08:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50356 to 48242. [2022-01-10 19:08:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48242 states, 48241 states have (on average 1.4923819987147862) internal successors, (71994), 48241 states have internal predecessors, (71994), 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 19:08:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48242 states to 48242 states and 71994 transitions. [2022-01-10 19:08:27,266 INFO L78 Accepts]: Start accepts. Automaton has 48242 states and 71994 transitions. Word has length 81 [2022-01-10 19:08:27,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:27,266 INFO L470 AbstractCegarLoop]: Abstraction has 48242 states and 71994 transitions. [2022-01-10 19:08:27,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 19:08:27,267 INFO L276 IsEmpty]: Start isEmpty. Operand 48242 states and 71994 transitions. [2022-01-10 19:08:27,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 19:08:27,268 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] [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 525523114, 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 [90707521] [2022-01-10 19:08:27,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:27,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:27,344 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 19:08:27,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:27,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90707521] [2022-01-10 19:08:27,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90707521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:27,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:27,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:08:27,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026655900] [2022-01-10 19:08:27,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:27,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:08:27,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:27,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:08:27,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:08:27,346 INFO L87 Difference]: Start difference. First operand 48242 states and 71994 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 19:08:31,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:31,539 INFO L93 Difference]: Finished difference Result 98356 states and 146678 transitions. [2022-01-10 19:08:31,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 19:08:31,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 82 [2022-01-10 19:08:31,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:31,623 INFO L225 Difference]: With dead ends: 98356 [2022-01-10 19:08:31,623 INFO L226 Difference]: Without dead ends: 50259 [2022-01-10 19:08:31,658 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 19:08:31,659 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 468 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:31,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 478 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:31,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50259 states. [2022-01-10 19:08:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50259 to 48345. [2022-01-10 19:08:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48345 states, 48344 states have (on average 1.491167466490154) internal successors, (72089), 48344 states have internal predecessors, (72089), 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 19:08:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48345 states to 48345 states and 72089 transitions. [2022-01-10 19:08:35,590 INFO L78 Accepts]: Start accepts. Automaton has 48345 states and 72089 transitions. Word has length 82 [2022-01-10 19:08:35,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:35,590 INFO L470 AbstractCegarLoop]: Abstraction has 48345 states and 72089 transitions. [2022-01-10 19:08:35,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 19:08:35,591 INFO L276 IsEmpty]: Start isEmpty. Operand 48345 states and 72089 transitions. [2022-01-10 19:08:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 19:08:35,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:35,593 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] [2022-01-10 19:08:35,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 19:08:35,594 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:35,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:35,594 INFO L85 PathProgramCache]: Analyzing trace with hash 917335389, now seen corresponding path program 1 times [2022-01-10 19:08:35,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:35,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178332968] [2022-01-10 19:08:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:35,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:35,633 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 19:08:35,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:35,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178332968] [2022-01-10 19:08:35,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178332968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:35,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:35,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:08:35,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927669302] [2022-01-10 19:08:35,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:35,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:08:35,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:35,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:08:35,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:08:35,634 INFO L87 Difference]: Start difference. First operand 48345 states and 72089 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 19:08:42,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:42,987 INFO L93 Difference]: Finished difference Result 132476 states and 197697 transitions. [2022-01-10 19:08:42,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:08:42,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2022-01-10 19:08:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:43,163 INFO L225 Difference]: With dead ends: 132476 [2022-01-10 19:08:43,163 INFO L226 Difference]: Without dead ends: 96523 [2022-01-10 19:08:43,201 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 19:08:43,202 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 194 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 632 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 19:08:43,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 632 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:43,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96523 states. [2022-01-10 19:08:47,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96523 to 48357. [2022-01-10 19:08:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48357 states, 48356 states have (on average 1.4910455786251964) internal successors, (72101), 48356 states have internal predecessors, (72101), 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 19:08:47,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48357 states to 48357 states and 72101 transitions. [2022-01-10 19:08:47,783 INFO L78 Accepts]: Start accepts. Automaton has 48357 states and 72101 transitions. Word has length 83 [2022-01-10 19:08:47,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:08:47,783 INFO L470 AbstractCegarLoop]: Abstraction has 48357 states and 72101 transitions. [2022-01-10 19:08:47,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 19:08:47,783 INFO L276 IsEmpty]: Start isEmpty. Operand 48357 states and 72101 transitions. [2022-01-10 19:08:47,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 19:08:47,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:08:47,786 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] [2022-01-10 19:08:47,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 19:08:47,786 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:08:47,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:08:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash -286315931, now seen corresponding path program 1 times [2022-01-10 19:08:47,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:08:47,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796079661] [2022-01-10 19:08:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:08:47,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:08:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:08:47,872 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 19:08:47,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:08:47,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796079661] [2022-01-10 19:08:47,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796079661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:08:47,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:08:47,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:08:47,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489653395] [2022-01-10 19:08:47,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:08:47,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:08:47,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:08:47,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:08:47,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:08:47,874 INFO L87 Difference]: Start difference. First operand 48357 states and 72101 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 19:08:55,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:08:55,349 INFO L93 Difference]: Finished difference Result 128267 states and 191064 transitions. [2022-01-10 19:08:55,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:08:55,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 84 [2022-01-10 19:08:55,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:08:55,501 INFO L225 Difference]: With dead ends: 128267 [2022-01-10 19:08:55,501 INFO L226 Difference]: Without dead ends: 82631 [2022-01-10 19:08:55,537 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 19:08:55,538 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 566 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:08:55,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 882 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:08:55,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82631 states. [2022-01-10 19:09:00,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82631 to 48525. [2022-01-10 19:09:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48525 states, 48524 states have (on average 1.4894073036023412) internal successors, (72272), 48524 states have internal predecessors, (72272), 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 19:09:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48525 states to 48525 states and 72272 transitions. [2022-01-10 19:09:00,540 INFO L78 Accepts]: Start accepts. Automaton has 48525 states and 72272 transitions. Word has length 84 [2022-01-10 19:09:00,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:09:00,540 INFO L470 AbstractCegarLoop]: Abstraction has 48525 states and 72272 transitions. [2022-01-10 19:09:00,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 19:09:00,540 INFO L276 IsEmpty]: Start isEmpty. Operand 48525 states and 72272 transitions. [2022-01-10 19:09:00,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 19:09:00,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:09:00,543 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] [2022-01-10 19:09:00,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 19:09:00,543 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:09:00,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:09:00,543 INFO L85 PathProgramCache]: Analyzing trace with hash 630399689, now seen corresponding path program 1 times [2022-01-10 19:09:00,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:09:00,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61067891] [2022-01-10 19:09:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:09:00,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:09:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:09:00,599 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 19:09:00,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:09:00,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61067891] [2022-01-10 19:09:00,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61067891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:09:00,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:09:00,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 19:09:00,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926296073] [2022-01-10 19:09:00,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:09:00,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 19:09:00,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:09:00,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 19:09:00,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 19:09:00,601 INFO L87 Difference]: Start difference. First operand 48525 states and 72272 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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)