/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_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:39:35,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:39:35,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:39:35,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:39:35,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:39:35,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:39:35,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:39:35,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:39:35,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:39:35,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:39:35,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:39:35,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:39:35,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:39:35,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:39:35,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:39:35,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:39:35,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:39:35,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:39:35,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:39:35,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:39:35,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:39:35,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:39:35,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:39:35,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:39:35,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:39:35,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:39:35,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:39:35,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:39:35,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:39:35,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:39:35,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:39:35,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:39:35,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:39:35,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:39:35,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:39:35,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:39:35,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:39:35,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:39:35,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:39:35,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:39:35,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:39:35,924 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:39:35,938 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:39:35,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:39:35,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:39:35,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:39:35,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:39:35,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:39:35,940 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:39:35,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:39:35,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:39:35,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:39:35,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:39:35,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:39:35,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:39:35,941 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:39:35,941 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:39:35,941 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:39:35,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:39:35,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:39:35,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:39:35,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:39:35,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:39:35,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:39:35,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:39:35,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:39:35,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:39:35,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:39:35,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:39:35,942 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:39:35,942 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:39:35,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:39:35,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:39:35,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:39:35,943 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:39:35,943 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:39:36,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:39:36,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:39:36,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:39:36,118 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:39:36,119 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:39:36,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2022-01-11 00:39:36,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9677a724a/3949c8657da643f7817ba31c1786a9da/FLAG9666c3d80 [2022-01-11 00:39:36,615 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:39:36,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2022-01-11 00:39:36,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9677a724a/3949c8657da643f7817ba31c1786a9da/FLAG9666c3d80 [2022-01-11 00:39:36,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9677a724a/3949c8657da643f7817ba31c1786a9da [2022-01-11 00:39:36,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:39:36,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:39:36,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:39:36,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:39:36,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:39:36,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:39:36" (1/1) ... [2022-01-11 00:39:36,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec1dc05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:39:36, skipping insertion in model container [2022-01-11 00:39:36,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:39:36" (1/1) ... [2022-01-11 00:39:36,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:39:37,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:39:37,428 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[30249,30262] [2022-01-11 00:39:37,462 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[33700,33713] [2022-01-11 00:39:37,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:39:37,637 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:39:37,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[30249,30262] [2022-01-11 00:39:37,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[33700,33713] [2022-01-11 00:39:37,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:39:37,941 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:39:37,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:39:37 WrapperNode [2022-01-11 00:39:37,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:39:37,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:39:37,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:39:37,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:39:37,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:39:37" (1/1) ... [2022-01-11 00:39:37,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:39:37" (1/1) ... [2022-01-11 00:39:38,041 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3719 [2022-01-11 00:39:38,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:39:38,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:39:38,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:39:38,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:39:38,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:39:37" (1/1) ... [2022-01-11 00:39:38,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:39:37" (1/1) ... [2022-01-11 00:39:38,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:39:37" (1/1) ... [2022-01-11 00:39:38,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:39:37" (1/1) ... [2022-01-11 00:39:38,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:39:37" (1/1) ... [2022-01-11 00:39:38,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:39:37" (1/1) ... [2022-01-11 00:39:38,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:39:37" (1/1) ... [2022-01-11 00:39:38,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:39:38,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:39:38,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:39:38,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:39:38,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:39:37" (1/1) ... [2022-01-11 00:39:38,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:39:38,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:39:38,168 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) [2022-01-11 00:39:38,185 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 [2022-01-11 00:39:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:39:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:39:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:39:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:39:38,345 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:39:38,346 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:39:40,008 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:39:40,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:39:40,021 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:39:40,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:39:40 BoogieIcfgContainer [2022-01-11 00:39:40,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:39:40,024 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:39:40,024 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:39:40,025 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:39:40,027 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:39:40" (1/1) ... [2022-01-11 00:39:41,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:39:41 BasicIcfg [2022-01-11 00:39:41,184 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:39:41,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:39:41,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:39:41,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:39:41,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:39:36" (1/4) ... [2022-01-11 00:39:41,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661edee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:39:41, skipping insertion in model container [2022-01-11 00:39:41,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:39:37" (2/4) ... [2022-01-11 00:39:41,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661edee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:39:41, skipping insertion in model container [2022-01-11 00:39:41,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:39:40" (3/4) ... [2022-01-11 00:39:41,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661edee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:39:41, skipping insertion in model container [2022-01-11 00:39:41,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:39:41" (4/4) ... [2022-01-11 00:39:41,189 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.cTransformedIcfg [2022-01-11 00:39:41,192 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:39:41,193 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 00:39:41,222 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:39:41,227 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 [2022-01-11 00:39:41,227 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 00:39:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 1073 states, 1070 states have (on average 1.749532710280374) internal successors, (1872), 1072 states have internal predecessors, (1872), 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) [2022-01-11 00:39:41,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-11 00:39:41,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:39:41,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:39:41,260 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:39:41,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:39:41,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1126372897, now seen corresponding path program 1 times [2022-01-11 00:39:41,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:39:41,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161385364] [2022-01-11 00:39:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:39:41,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:39:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:39:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:39:41,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:39:41,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161385364] [2022-01-11 00:39:41,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161385364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:39:41,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:39:41,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:39:41,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898751176] [2022-01-11 00:39:41,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:39:41,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:39:41,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:39:41,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:39:41,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:39:41,772 INFO L87 Difference]: Start difference. First operand has 1073 states, 1070 states have (on average 1.749532710280374) internal successors, (1872), 1072 states have internal predecessors, (1872), 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 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:39:43,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:39:46,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:39:48,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:39:50,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:39:50,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:39:50,537 INFO L93 Difference]: Finished difference Result 2564 states and 4446 transitions. [2022-01-11 00:39:50,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:39:50,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2022-01-11 00:39:50,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:39:50,558 INFO L225 Difference]: With dead ends: 2564 [2022-01-11 00:39:50,558 INFO L226 Difference]: Without dead ends: 1811 [2022-01-11 00:39:50,562 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 [2022-01-11 00:39:50,565 INFO L933 BasicCegarLoop]: 1866 mSDtfsCounter, 1264 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-01-11 00:39:50,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1264 Valid, 3704 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 4 Unknown, 0 Unchecked, 8.6s Time] [2022-01-11 00:39:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2022-01-11 00:39:50,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1762. [2022-01-11 00:39:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1760 states have (on average 1.7267045454545455) internal successors, (3039), 1761 states have internal predecessors, (3039), 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) [2022-01-11 00:39:50,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 3039 transitions. [2022-01-11 00:39:50,678 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 3039 transitions. Word has length 156 [2022-01-11 00:39:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:39:50,679 INFO L470 AbstractCegarLoop]: Abstraction has 1762 states and 3039 transitions. [2022-01-11 00:39:50,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:39:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 3039 transitions. [2022-01-11 00:39:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 00:39:50,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:39:50,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:39:50,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:39:50,691 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:39:50,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:39:50,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2029350380, now seen corresponding path program 1 times [2022-01-11 00:39:50,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:39:50,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270937613] [2022-01-11 00:39:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:39:50,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:39:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:39:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:39:50,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:39:50,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270937613] [2022-01-11 00:39:50,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270937613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:39:50,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:39:50,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:39:50,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67125392] [2022-01-11 00:39:50,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:39:50,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:39:50,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:39:50,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:39:50,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:39:50,993 INFO L87 Difference]: Start difference. First operand 1762 states and 3039 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:39:51,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:39:51,386 INFO L93 Difference]: Finished difference Result 5155 states and 8896 transitions. [2022-01-11 00:39:51,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:39:51,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2022-01-11 00:39:51,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:39:51,403 INFO L225 Difference]: With dead ends: 5155 [2022-01-11 00:39:51,403 INFO L226 Difference]: Without dead ends: 3434 [2022-01-11 00:39:51,410 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 [2022-01-11 00:39:51,412 INFO L933 BasicCegarLoop]: 2313 mSDtfsCounter, 4819 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4819 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:39:51,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4819 Valid, 4064 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:39:51,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-01-11 00:39:51,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3430. [2022-01-11 00:39:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3428 states have (on average 1.7222870478413068) internal successors, (5904), 3429 states have internal predecessors, (5904), 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) [2022-01-11 00:39:51,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 5904 transitions. [2022-01-11 00:39:51,594 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 5904 transitions. Word has length 165 [2022-01-11 00:39:51,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:39:51,597 INFO L470 AbstractCegarLoop]: Abstraction has 3430 states and 5904 transitions. [2022-01-11 00:39:51,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:39:51,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 5904 transitions. [2022-01-11 00:39:51,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-11 00:39:51,609 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:39:51,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:39:51,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:39:51,609 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:39:51,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:39:51,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2089422491, now seen corresponding path program 1 times [2022-01-11 00:39:51,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:39:51,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605133368] [2022-01-11 00:39:51,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:39:51,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:39:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:39:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:39:51,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:39:51,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605133368] [2022-01-11 00:39:51,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605133368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:39:51,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:39:51,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:39:51,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533902419] [2022-01-11 00:39:51,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:39:51,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:39:51,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:39:51,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:39:51,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:39:51,798 INFO L87 Difference]: Start difference. First operand 3430 states and 5904 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-01-11 00:39:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:39:52,074 INFO L93 Difference]: Finished difference Result 10041 states and 17295 transitions. [2022-01-11 00:39:52,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:39:52,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 167 [2022-01-11 00:39:52,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:39:52,099 INFO L225 Difference]: With dead ends: 10041 [2022-01-11 00:39:52,099 INFO L226 Difference]: Without dead ends: 6706 [2022-01-11 00:39:52,105 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 [2022-01-11 00:39:52,106 INFO L933 BasicCegarLoop]: 3552 mSDtfsCounter, 1729 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 5313 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:39:52,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 5313 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:39:52,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6706 states. [2022-01-11 00:39:52,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6706 to 6702. [2022-01-11 00:39:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6702 states, 6700 states have (on average 1.7182089552238806) internal successors, (11512), 6701 states have internal predecessors, (11512), 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) [2022-01-11 00:39:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6702 states to 6702 states and 11512 transitions. [2022-01-11 00:39:52,401 INFO L78 Accepts]: Start accepts. Automaton has 6702 states and 11512 transitions. Word has length 167 [2022-01-11 00:39:52,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:39:52,402 INFO L470 AbstractCegarLoop]: Abstraction has 6702 states and 11512 transitions. [2022-01-11 00:39:52,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-01-11 00:39:52,403 INFO L276 IsEmpty]: Start isEmpty. Operand 6702 states and 11512 transitions. [2022-01-11 00:39:52,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-11 00:39:52,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:39:52,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:39:52,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:39:52,414 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:39:52,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:39:52,415 INFO L85 PathProgramCache]: Analyzing trace with hash -638433347, now seen corresponding path program 1 times [2022-01-11 00:39:52,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:39:52,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836030219] [2022-01-11 00:39:52,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:39:52,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:39:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:39:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:39:52,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:39:52,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836030219] [2022-01-11 00:39:52,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836030219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:39:52,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:39:52,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:39:52,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817213292] [2022-01-11 00:39:52,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:39:52,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:39:52,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:39:52,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:39:52,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:39:52,493 INFO L87 Difference]: Start difference. First operand 6702 states and 11512 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-01-11 00:39:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:39:52,841 INFO L93 Difference]: Finished difference Result 20003 states and 34349 transitions. [2022-01-11 00:39:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:39:52,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 167 [2022-01-11 00:39:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:39:52,883 INFO L225 Difference]: With dead ends: 20003 [2022-01-11 00:39:52,883 INFO L226 Difference]: Without dead ends: 13357 [2022-01-11 00:39:52,896 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 [2022-01-11 00:39:52,896 INFO L933 BasicCegarLoop]: 3651 mSDtfsCounter, 1806 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 5491 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 [2022-01-11 00:39:52,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1806 Valid, 5491 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:39:52,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13357 states. [2022-01-11 00:39:53,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13357 to 6721. [2022-01-11 00:39:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6721 states, 6719 states have (on average 1.7176663193927668) internal successors, (11541), 6720 states have internal predecessors, (11541), 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) [2022-01-11 00:39:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6721 states to 6721 states and 11541 transitions. [2022-01-11 00:39:53,250 INFO L78 Accepts]: Start accepts. Automaton has 6721 states and 11541 transitions. Word has length 167 [2022-01-11 00:39:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:39:53,250 INFO L470 AbstractCegarLoop]: Abstraction has 6721 states and 11541 transitions. [2022-01-11 00:39:53,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-01-11 00:39:53,251 INFO L276 IsEmpty]: Start isEmpty. Operand 6721 states and 11541 transitions. [2022-01-11 00:39:53,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-11 00:39:53,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:39:53,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:39:53,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:39:53,260 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:39:53,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:39:53,261 INFO L85 PathProgramCache]: Analyzing trace with hash 70012187, now seen corresponding path program 1 times [2022-01-11 00:39:53,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:39:53,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535501005] [2022-01-11 00:39:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:39:53,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:39:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:39:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:39:53,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:39:53,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535501005] [2022-01-11 00:39:53,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535501005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:39:53,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:39:53,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:39:53,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792082324] [2022-01-11 00:39:53,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:39:53,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:39:53,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:39:53,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:39:53,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:39:53,365 INFO L87 Difference]: Start difference. First operand 6721 states and 11541 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2022-01-11 00:39:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:39:53,776 INFO L93 Difference]: Finished difference Result 13833 states and 23781 transitions. [2022-01-11 00:39:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:39:53,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 168 [2022-01-11 00:39:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:39:53,793 INFO L225 Difference]: With dead ends: 13833 [2022-01-11 00:39:53,793 INFO L226 Difference]: Without dead ends: 7221 [2022-01-11 00:39:53,800 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 [2022-01-11 00:39:53,802 INFO L933 BasicCegarLoop]: 2293 mSDtfsCounter, 4817 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4817 SdHoareTripleChecker+Valid, 4044 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:39:53,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4817 Valid, 4044 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:39:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7221 states. [2022-01-11 00:39:54,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7221 to 6709. [2022-01-11 00:39:54,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6709 states, 6707 states have (on average 1.716415685105114) internal successors, (11512), 6708 states have internal predecessors, (11512), 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) [2022-01-11 00:39:54,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6709 states to 6709 states and 11512 transitions. [2022-01-11 00:39:54,153 INFO L78 Accepts]: Start accepts. Automaton has 6709 states and 11512 transitions. Word has length 168 [2022-01-11 00:39:54,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:39:54,154 INFO L470 AbstractCegarLoop]: Abstraction has 6709 states and 11512 transitions. [2022-01-11 00:39:54,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2022-01-11 00:39:54,154 INFO L276 IsEmpty]: Start isEmpty. Operand 6709 states and 11512 transitions. [2022-01-11 00:39:54,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-01-11 00:39:54,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:39:54,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:39:54,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:39:54,163 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:39:54,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:39:54,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1279776148, now seen corresponding path program 1 times [2022-01-11 00:39:54,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:39:54,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929468654] [2022-01-11 00:39:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:39:54,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:39:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:39:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:39:54,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:39:54,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929468654] [2022-01-11 00:39:54,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929468654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:39:54,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:39:54,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:39:54,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186712628] [2022-01-11 00:39:54,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:39:54,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:39:54,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:39:54,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:39:54,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:39:54,269 INFO L87 Difference]: Start difference. First operand 6709 states and 11512 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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) [2022-01-11 00:39:55,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:39:55,080 INFO L93 Difference]: Finished difference Result 19698 states and 33839 transitions. [2022-01-11 00:39:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:39:55,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 170 [2022-01-11 00:39:55,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:39:55,106 INFO L225 Difference]: With dead ends: 19698 [2022-01-11 00:39:55,106 INFO L226 Difference]: Without dead ends: 13096 [2022-01-11 00:39:55,117 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 [2022-01-11 00:39:55,118 INFO L933 BasicCegarLoop]: 2731 mSDtfsCounter, 4385 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4385 SdHoareTripleChecker+Valid, 4482 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:39:55,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4385 Valid, 4482 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:39:55,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13096 states. [2022-01-11 00:39:55,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13096 to 13092. [2022-01-11 00:39:55,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13092 states, 13090 states have (on average 1.7122230710466004) internal successors, (22413), 13091 states have internal predecessors, (22413), 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) [2022-01-11 00:39:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13092 states to 13092 states and 22413 transitions. [2022-01-11 00:39:55,873 INFO L78 Accepts]: Start accepts. Automaton has 13092 states and 22413 transitions. Word has length 170 [2022-01-11 00:39:55,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:39:55,874 INFO L470 AbstractCegarLoop]: Abstraction has 13092 states and 22413 transitions. [2022-01-11 00:39:55,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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) [2022-01-11 00:39:55,874 INFO L276 IsEmpty]: Start isEmpty. Operand 13092 states and 22413 transitions. [2022-01-11 00:39:55,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-11 00:39:55,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:39:55,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:39:55,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:39:55,893 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:39:55,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:39:55,893 INFO L85 PathProgramCache]: Analyzing trace with hash 192320045, now seen corresponding path program 1 times [2022-01-11 00:39:55,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:39:55,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911368272] [2022-01-11 00:39:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:39:55,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:39:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:39:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:39:56,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:39:56,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911368272] [2022-01-11 00:39:56,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911368272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:39:56,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:39:56,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:39:56,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335223067] [2022-01-11 00:39:56,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:39:56,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:39:56,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:39:56,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:39:56,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:39:56,004 INFO L87 Difference]: Start difference. First operand 13092 states and 22413 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2022-01-11 00:39:59,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:39:59,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:39:59,343 INFO L93 Difference]: Finished difference Result 33632 states and 57357 transitions. [2022-01-11 00:39:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:39:59,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 172 [2022-01-11 00:39:59,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:39:59,389 INFO L225 Difference]: With dead ends: 33632 [2022-01-11 00:39:59,389 INFO L226 Difference]: Without dead ends: 22212 [2022-01-11 00:39:59,403 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 [2022-01-11 00:39:59,404 INFO L933 BasicCegarLoop]: 1898 mSDtfsCounter, 1270 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:39:59,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 3625 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 00:39:59,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22212 states. [2022-01-11 00:40:00,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22212 to 22208. [2022-01-11 00:40:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22208 states, 22206 states have (on average 1.7037287219670358) internal successors, (37833), 22207 states have internal predecessors, (37833), 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) [2022-01-11 00:40:00,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22208 states to 22208 states and 37833 transitions. [2022-01-11 00:40:00,577 INFO L78 Accepts]: Start accepts. Automaton has 22208 states and 37833 transitions. Word has length 172 [2022-01-11 00:40:00,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:40:00,577 INFO L470 AbstractCegarLoop]: Abstraction has 22208 states and 37833 transitions. [2022-01-11 00:40:00,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2022-01-11 00:40:00,578 INFO L276 IsEmpty]: Start isEmpty. Operand 22208 states and 37833 transitions. [2022-01-11 00:40:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-11 00:40:00,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:40:00,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:40:00,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:40:00,611 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:40:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:40:00,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1785177957, now seen corresponding path program 1 times [2022-01-11 00:40:00,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:40:00,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919521159] [2022-01-11 00:40:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:40:00,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:40:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:40:00,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:40:00,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:40:00,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919521159] [2022-01-11 00:40:00,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919521159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:40:00,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:40:00,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:40:00,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554562534] [2022-01-11 00:40:00,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:40:00,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:40:00,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:40:00,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:40:00,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:40:00,764 INFO L87 Difference]: Start difference. First operand 22208 states and 37833 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2022-01-11 00:40:03,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:40:03,551 INFO L93 Difference]: Finished difference Result 65707 states and 111977 transitions. [2022-01-11 00:40:03,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:40:03,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 181 [2022-01-11 00:40:03,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:40:03,637 INFO L225 Difference]: With dead ends: 65707 [2022-01-11 00:40:03,638 INFO L226 Difference]: Without dead ends: 43839 [2022-01-11 00:40:03,669 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 [2022-01-11 00:40:03,670 INFO L933 BasicCegarLoop]: 2291 mSDtfsCounter, 4898 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4898 SdHoareTripleChecker+Valid, 4042 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:40:03,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4898 Valid, 4042 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:40:03,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43839 states. [2022-01-11 00:40:06,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43839 to 43835. [2022-01-11 00:40:06,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43835 states, 43833 states have (on average 1.6993589304861634) internal successors, (74488), 43834 states have internal predecessors, (74488), 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) [2022-01-11 00:40:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43835 states to 43835 states and 74488 transitions. [2022-01-11 00:40:06,771 INFO L78 Accepts]: Start accepts. Automaton has 43835 states and 74488 transitions. Word has length 181 [2022-01-11 00:40:06,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:40:06,771 INFO L470 AbstractCegarLoop]: Abstraction has 43835 states and 74488 transitions. [2022-01-11 00:40:06,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2022-01-11 00:40:06,771 INFO L276 IsEmpty]: Start isEmpty. Operand 43835 states and 74488 transitions. [2022-01-11 00:40:06,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-11 00:40:06,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:40:06,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:40:06,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:40:06,832 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:40:06,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:40:06,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1572743744, now seen corresponding path program 1 times [2022-01-11 00:40:06,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:40:06,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113932432] [2022-01-11 00:40:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:40:06,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:40:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:40:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:40:06,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:40:06,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113932432] [2022-01-11 00:40:06,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113932432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:40:06,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:40:06,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:40:06,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048682282] [2022-01-11 00:40:06,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:40:06,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:40:06,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:40:06,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:40:06,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:40:06,955 INFO L87 Difference]: Start difference. First operand 43835 states and 74488 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2022-01-11 00:40:12,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:40:12,040 INFO L93 Difference]: Finished difference Result 128856 states and 219249 transitions. [2022-01-11 00:40:12,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:40:12,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 183 [2022-01-11 00:40:12,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:40:12,195 INFO L225 Difference]: With dead ends: 128856 [2022-01-11 00:40:12,196 INFO L226 Difference]: Without dead ends: 85644 [2022-01-11 00:40:12,240 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 [2022-01-11 00:40:12,241 INFO L933 BasicCegarLoop]: 3568 mSDtfsCounter, 1745 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 5329 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:40:12,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1745 Valid, 5329 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:40:12,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85644 states. [2022-01-11 00:40:17,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85644 to 85640. [2022-01-11 00:40:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85640 states, 85638 states have (on average 1.694352974146991) internal successors, (145101), 85639 states have internal predecessors, (145101), 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) [2022-01-11 00:40:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85640 states to 85640 states and 145101 transitions. [2022-01-11 00:40:17,864 INFO L78 Accepts]: Start accepts. Automaton has 85640 states and 145101 transitions. Word has length 183 [2022-01-11 00:40:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:40:17,865 INFO L470 AbstractCegarLoop]: Abstraction has 85640 states and 145101 transitions. [2022-01-11 00:40:17,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2022-01-11 00:40:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 85640 states and 145101 transitions. [2022-01-11 00:40:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-11 00:40:17,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:40:17,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:40:17,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:40:17,982 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:40:17,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:40:17,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1734322530, now seen corresponding path program 1 times [2022-01-11 00:40:17,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:40:17,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840725311] [2022-01-11 00:40:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:40:17,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:40:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:40:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:40:18,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:40:18,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840725311] [2022-01-11 00:40:18,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840725311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:40:18,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:40:18,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:40:18,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135200708] [2022-01-11 00:40:18,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:40:18,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:40:18,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:40:18,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:40:18,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:40:18,041 INFO L87 Difference]: Start difference. First operand 85640 states and 145101 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2022-01-11 00:40:28,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:40:28,018 INFO L93 Difference]: Finished difference Result 256853 states and 435182 transitions. [2022-01-11 00:40:28,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:40:28,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 183 [2022-01-11 00:40:28,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:40:28,358 INFO L225 Difference]: With dead ends: 256853 [2022-01-11 00:40:28,358 INFO L226 Difference]: Without dead ends: 171251 [2022-01-11 00:40:28,626 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 [2022-01-11 00:40:28,627 INFO L933 BasicCegarLoop]: 3684 mSDtfsCounter, 1839 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 5524 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 [2022-01-11 00:40:28,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1839 Valid, 5524 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:40:28,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171251 states. [2022-01-11 00:40:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171251 to 85659. [2022-01-11 00:40:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85659 states, 85657 states have (on average 1.6943157009934973) internal successors, (145130), 85658 states have internal predecessors, (145130), 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) [2022-01-11 00:40:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85659 states to 85659 states and 145130 transitions. [2022-01-11 00:40:35,300 INFO L78 Accepts]: Start accepts. Automaton has 85659 states and 145130 transitions. Word has length 183 [2022-01-11 00:40:35,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:40:35,300 INFO L470 AbstractCegarLoop]: Abstraction has 85659 states and 145130 transitions. [2022-01-11 00:40:35,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2022-01-11 00:40:35,301 INFO L276 IsEmpty]: Start isEmpty. Operand 85659 states and 145130 transitions. [2022-01-11 00:40:35,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-11 00:40:35,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:40:35,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:40:35,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:40:35,418 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:40:35,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:40:35,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1916875536, now seen corresponding path program 1 times [2022-01-11 00:40:35,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:40:35,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159517393] [2022-01-11 00:40:35,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:40:35,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:40:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:40:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:40:35,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:40:35,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159517393] [2022-01-11 00:40:35,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159517393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:40:35,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:40:35,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:40:35,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039890441] [2022-01-11 00:40:35,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:40:35,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:40:35,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:40:35,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:40:35,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:40:35,563 INFO L87 Difference]: Start difference. First operand 85659 states and 145130 transitions. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 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)