/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_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:47:16,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:47:16,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:47:16,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:47:16,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:47:16,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:47:16,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:47:16,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:47:16,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:47:16,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:47:16,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:47:16,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:47:16,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:47:16,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:47:16,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:47:16,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:47:16,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:47:16,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:47:16,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:47:16,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:47:16,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:47:16,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:47:16,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:47:16,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:47:16,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:47:16,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:47:16,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:47:16,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:47:16,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:47:16,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:47:16,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:47:16,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:47:16,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:47:16,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:47:16,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:47:16,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:47:16,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:47:16,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:47:16,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:47:16,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:47:16,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:47:16,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:47:16,696 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:47:16,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:47:16,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:47:16,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:47:16,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:47:16,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:47:16,698 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:47:16,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:47:16,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:47:16,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:47:16,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:47:16,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:47:16,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:47:16,699 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:47:16,699 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:47:16,699 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:47:16,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:47:16,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:47:16,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:47:16,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:47:16,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:47:16,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:47:16,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:47:16,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:47:16,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:47:16,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:47:16,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:47:16,700 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:47:16,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:47:16,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:47:16,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:47:16,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:47:16,701 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:47:16,701 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:47:16,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:47:16,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:47:16,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:47:16,917 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:47:16,917 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:47:16,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:47:16,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c60e22a/f4152cb8f7054e1983515f0953684cac/FLAG0c7f61202 [2022-01-11 06:47:17,368 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:47:17,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:47:17,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c60e22a/f4152cb8f7054e1983515f0953684cac/FLAG0c7f61202 [2022-01-11 06:47:17,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35c60e22a/f4152cb8f7054e1983515f0953684cac [2022-01-11 06:47:17,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:47:17,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:47:17,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:47:17,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:47:17,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:47:17,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:47:17" (1/1) ... [2022-01-11 06:47:17,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5142d68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:47:17, skipping insertion in model container [2022-01-11 06:47:17,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:47:17" (1/1) ... [2022-01-11 06:47:17,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:47:17,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:47:17,734 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13826,13839] [2022-01-11 06:47:17,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:47:17,813 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:47:17,864 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13826,13839] [2022-01-11 06:47:17,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:47:17,921 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:47:17,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:47:17 WrapperNode [2022-01-11 06:47:17,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:47:17,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:47:17,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:47:17,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:47:17,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:47:17" (1/1) ... [2022-01-11 06:47:17,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:47:17" (1/1) ... [2022-01-11 06:47:17,996 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1349 [2022-01-11 06:47:17,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:47:17,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:47:17,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:47:17,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:47:18,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:47:17" (1/1) ... [2022-01-11 06:47:18,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:47:17" (1/1) ... [2022-01-11 06:47:18,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:47:17" (1/1) ... [2022-01-11 06:47:18,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:47:17" (1/1) ... [2022-01-11 06:47:18,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:47:17" (1/1) ... [2022-01-11 06:47:18,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:47:17" (1/1) ... [2022-01-11 06:47:18,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:47:17" (1/1) ... [2022-01-11 06:47:18,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:47:18,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:47:18,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:47:18,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:47:18,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:47:17" (1/1) ... [2022-01-11 06:47:18,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:47:18,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:47:18,085 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 06:47:18,103 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 06:47:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:47:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:47:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:47:18,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:47:18,274 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:47:18,275 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:47:18,945 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:47:18,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:47:18,957 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:47:18,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:47:18 BoogieIcfgContainer [2022-01-11 06:47:18,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:47:18,961 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:47:18,961 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:47:18,961 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:47:18,963 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:47:18" (1/1) ... [2022-01-11 06:47:19,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:47:19 BasicIcfg [2022-01-11 06:47:19,361 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:47:19,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:47:19,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:47:19,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:47:19,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:47:17" (1/4) ... [2022-01-11 06:47:19,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ada9b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:47:19, skipping insertion in model container [2022-01-11 06:47:19,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:47:17" (2/4) ... [2022-01-11 06:47:19,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ada9b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:47:19, skipping insertion in model container [2022-01-11 06:47:19,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:47:18" (3/4) ... [2022-01-11 06:47:19,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ada9b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:47:19, skipping insertion in model container [2022-01-11 06:47:19,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:47:19" (4/4) ... [2022-01-11 06:47:19,368 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 06:47:19,371 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:47:19,371 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:47:19,412 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:47:19,417 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 06:47:19,418 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:47:19,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 350 states, 348 states have (on average 1.7873563218390804) internal successors, (622), 349 states have internal predecessors, (622), 0 states have call successors, (0), 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 06:47:19,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-11 06:47:19,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:19,453 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] [2022-01-11 06:47:19,453 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:19,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:19,457 INFO L85 PathProgramCache]: Analyzing trace with hash -65312230, now seen corresponding path program 1 times [2022-01-11 06:47:19,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:19,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159204487] [2022-01-11 06:47:19,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:19,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:20,073 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 06:47:20,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:20,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159204487] [2022-01-11 06:47:20,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159204487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:20,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:20,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:47:20,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135438059] [2022-01-11 06:47:20,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:20,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:47:20,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:20,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:47:20,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:47:20,110 INFO L87 Difference]: Start difference. First operand has 350 states, 348 states have (on average 1.7873563218390804) internal successors, (622), 349 states have internal predecessors, (622), 0 states have call successors, (0), 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 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 06:47:22,198 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 06:47:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:22,393 INFO L93 Difference]: Finished difference Result 652 states and 1124 transitions. [2022-01-11 06:47:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:47:22,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-01-11 06:47:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:22,411 INFO L225 Difference]: With dead ends: 652 [2022-01-11 06:47:22,411 INFO L226 Difference]: Without dead ends: 489 [2022-01-11 06:47:22,414 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 06:47:22,443 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 266 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:47:22,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 1146 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:47:22,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-01-11 06:47:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 486. [2022-01-11 06:47:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 1.6515463917525772) internal successors, (801), 485 states have internal predecessors, (801), 0 states have call successors, (0), 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 06:47:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 801 transitions. [2022-01-11 06:47:22,528 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 801 transitions. Word has length 118 [2022-01-11 06:47:22,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:22,528 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 801 transitions. [2022-01-11 06:47:22,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 06:47:22,529 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 801 transitions. [2022-01-11 06:47:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-11 06:47:22,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:22,531 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] [2022-01-11 06:47:22,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:47:22,531 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:22,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:22,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1049674761, now seen corresponding path program 1 times [2022-01-11 06:47:22,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:22,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867571846] [2022-01-11 06:47:22,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:22,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:22,767 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 06:47:22,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:22,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867571846] [2022-01-11 06:47:22,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867571846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:22,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:22,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:47:22,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603681277] [2022-01-11 06:47:22,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:22,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:47:22,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:22,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:47:22,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:47:22,770 INFO L87 Difference]: Start difference. First operand 486 states and 801 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 06:47:22,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:22,895 INFO L93 Difference]: Finished difference Result 1390 states and 2282 transitions. [2022-01-11 06:47:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:47:22,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-01-11 06:47:22,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:22,906 INFO L225 Difference]: With dead ends: 1390 [2022-01-11 06:47:22,906 INFO L226 Difference]: Without dead ends: 951 [2022-01-11 06:47:22,910 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 06:47:22,911 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 1567 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:47:22,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1567 Valid, 1092 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:47:22,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2022-01-11 06:47:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 949. [2022-01-11 06:47:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 948 states have (on average 1.6424050632911393) internal successors, (1557), 948 states have internal predecessors, (1557), 0 states have call successors, (0), 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 06:47:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1557 transitions. [2022-01-11 06:47:22,977 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1557 transitions. Word has length 121 [2022-01-11 06:47:22,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:22,978 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1557 transitions. [2022-01-11 06:47:22,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 06:47:22,979 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1557 transitions. [2022-01-11 06:47:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-11 06:47:22,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:22,990 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] [2022-01-11 06:47:22,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:47:22,993 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:22,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:22,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1526451670, now seen corresponding path program 1 times [2022-01-11 06:47:22,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:22,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568008845] [2022-01-11 06:47:22,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:22,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:23,145 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 06:47:23,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:23,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568008845] [2022-01-11 06:47:23,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568008845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:23,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:23,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:47:23,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550109780] [2022-01-11 06:47:23,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:23,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:47:23,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:23,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:47:23,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:47:23,153 INFO L87 Difference]: Start difference. First operand 949 states and 1557 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 06:47:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:23,213 INFO L93 Difference]: Finished difference Result 1795 states and 2973 transitions. [2022-01-11 06:47:23,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:47:23,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-11 06:47:23,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:23,220 INFO L225 Difference]: With dead ends: 1795 [2022-01-11 06:47:23,220 INFO L226 Difference]: Without dead ends: 1223 [2022-01-11 06:47:23,221 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 06:47:23,224 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 246 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:47:23,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 1124 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:47:23,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-01-11 06:47:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1203. [2022-01-11 06:47:23,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.6464226289517472) internal successors, (1979), 1202 states have internal predecessors, (1979), 0 states have call successors, (0), 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 06:47:23,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1979 transitions. [2022-01-11 06:47:23,291 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1979 transitions. Word has length 122 [2022-01-11 06:47:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:23,292 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 1979 transitions. [2022-01-11 06:47:23,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 06:47:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1979 transitions. [2022-01-11 06:47:23,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-11 06:47:23,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:23,294 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] [2022-01-11 06:47:23,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:47:23,294 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:23,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1548846364, now seen corresponding path program 1 times [2022-01-11 06:47:23,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:23,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425059909] [2022-01-11 06:47:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:23,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:23,473 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 06:47:23,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:23,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425059909] [2022-01-11 06:47:23,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425059909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:23,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:23,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:47:23,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397324370] [2022-01-11 06:47:23,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:23,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:47:23,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:23,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:47:23,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:47:23,475 INFO L87 Difference]: Start difference. First operand 1203 states and 1979 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 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 06:47:23,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:23,722 INFO L93 Difference]: Finished difference Result 4703 states and 7727 transitions. [2022-01-11 06:47:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:47:23,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-01-11 06:47:23,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:23,734 INFO L225 Difference]: With dead ends: 4703 [2022-01-11 06:47:23,734 INFO L226 Difference]: Without dead ends: 3512 [2022-01-11 06:47:23,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:47:23,742 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 1529 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:47:23,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 2152 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:47:23,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2022-01-11 06:47:23,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 2360. [2022-01-11 06:47:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2359 states have (on average 1.6367104705383637) internal successors, (3861), 2359 states have internal predecessors, (3861), 0 states have call successors, (0), 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 06:47:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 3861 transitions. [2022-01-11 06:47:23,855 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 3861 transitions. Word has length 123 [2022-01-11 06:47:23,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:23,855 INFO L470 AbstractCegarLoop]: Abstraction has 2360 states and 3861 transitions. [2022-01-11 06:47:23,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 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 06:47:23,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 3861 transitions. [2022-01-11 06:47:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 06:47:23,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:23,858 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] [2022-01-11 06:47:23,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:47:23,859 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:23,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash -11186089, now seen corresponding path program 1 times [2022-01-11 06:47:23,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:23,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727302983] [2022-01-11 06:47:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:23,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:24,002 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 06:47:24,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:24,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727302983] [2022-01-11 06:47:24,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727302983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:24,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:24,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:47:24,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198798295] [2022-01-11 06:47:24,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:24,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:47:24,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:24,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:47:24,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:47:24,004 INFO L87 Difference]: Start difference. First operand 2360 states and 3861 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 06:47:24,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:24,138 INFO L93 Difference]: Finished difference Result 3940 states and 6511 transitions. [2022-01-11 06:47:24,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:47:24,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-11 06:47:24,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:24,148 INFO L225 Difference]: With dead ends: 3940 [2022-01-11 06:47:24,149 INFO L226 Difference]: Without dead ends: 2846 [2022-01-11 06:47:24,151 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 06:47:24,151 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 235 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:47:24,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1290 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:47:24,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-01-11 06:47:24,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2844. [2022-01-11 06:47:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2843 states have (on average 1.6422792824481183) internal successors, (4669), 2843 states have internal predecessors, (4669), 0 states have call successors, (0), 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 06:47:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4669 transitions. [2022-01-11 06:47:24,291 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4669 transitions. Word has length 124 [2022-01-11 06:47:24,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:24,294 INFO L470 AbstractCegarLoop]: Abstraction has 2844 states and 4669 transitions. [2022-01-11 06:47:24,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 06:47:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4669 transitions. [2022-01-11 06:47:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 06:47:24,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:24,299 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] [2022-01-11 06:47:24,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:47:24,299 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:24,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:24,300 INFO L85 PathProgramCache]: Analyzing trace with hash -580390169, now seen corresponding path program 1 times [2022-01-11 06:47:24,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:24,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378141479] [2022-01-11 06:47:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:24,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:24,350 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 06:47:24,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:24,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378141479] [2022-01-11 06:47:24,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378141479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:24,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:24,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:47:24,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799056226] [2022-01-11 06:47:24,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:24,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:47:24,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:24,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:47:24,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:47:24,351 INFO L87 Difference]: Start difference. First operand 2844 states and 4669 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 06:47:24,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:24,569 INFO L93 Difference]: Finished difference Result 8475 states and 13909 transitions. [2022-01-11 06:47:24,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:47:24,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-11 06:47:24,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:24,585 INFO L225 Difference]: With dead ends: 8475 [2022-01-11 06:47:24,585 INFO L226 Difference]: Without dead ends: 5660 [2022-01-11 06:47:24,589 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 06:47:24,589 INFO L933 BasicCegarLoop]: 1118 mSDtfsCounter, 550 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1675 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 06:47:24,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1675 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:47:24,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5660 states. [2022-01-11 06:47:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5660 to 2858. [2022-01-11 06:47:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2858 states, 2857 states have (on average 1.640182009100455) internal successors, (4686), 2857 states have internal predecessors, (4686), 0 states have call successors, (0), 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 06:47:24,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 4686 transitions. [2022-01-11 06:47:24,744 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 4686 transitions. Word has length 125 [2022-01-11 06:47:24,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:24,744 INFO L470 AbstractCegarLoop]: Abstraction has 2858 states and 4686 transitions. [2022-01-11 06:47:24,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 06:47:24,744 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 4686 transitions. [2022-01-11 06:47:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 06:47:24,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:24,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:47:24,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:47:24,747 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:24,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:24,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1692745844, now seen corresponding path program 1 times [2022-01-11 06:47:24,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:24,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120005905] [2022-01-11 06:47:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:24,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:24,886 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 06:47:24,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:24,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120005905] [2022-01-11 06:47:24,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120005905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:24,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:24,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:47:24,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286804108] [2022-01-11 06:47:24,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:24,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:47:24,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:24,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:47:24,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:47:24,887 INFO L87 Difference]: Start difference. First operand 2858 states and 4686 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 06:47:25,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:25,251 INFO L93 Difference]: Finished difference Result 8239 states and 13499 transitions. [2022-01-11 06:47:25,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:47:25,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-01-11 06:47:25,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:25,267 INFO L225 Difference]: With dead ends: 8239 [2022-01-11 06:47:25,267 INFO L226 Difference]: Without dead ends: 5501 [2022-01-11 06:47:25,271 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 06:47:25,272 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 1315 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:47:25,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1315 Valid, 1332 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:47:25,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2022-01-11 06:47:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 5499. [2022-01-11 06:47:25,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5499 states, 5498 states have (on average 1.6316842488177519) internal successors, (8971), 5498 states have internal predecessors, (8971), 0 states have call successors, (0), 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 06:47:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 8971 transitions. [2022-01-11 06:47:25,575 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 8971 transitions. Word has length 127 [2022-01-11 06:47:25,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:25,576 INFO L470 AbstractCegarLoop]: Abstraction has 5499 states and 8971 transitions. [2022-01-11 06:47:25,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 06:47:25,576 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 8971 transitions. [2022-01-11 06:47:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 06:47:25,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:25,605 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] [2022-01-11 06:47:25,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:47:25,606 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:25,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:25,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2085327408, now seen corresponding path program 1 times [2022-01-11 06:47:25,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:25,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954415386] [2022-01-11 06:47:25,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:25,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:25,679 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 06:47:25,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:25,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954415386] [2022-01-11 06:47:25,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954415386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:25,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:25,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:47:25,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625723876] [2022-01-11 06:47:25,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:25,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:47:25,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:25,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:47:25,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:47:25,681 INFO L87 Difference]: Start difference. First operand 5499 states and 8971 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 06:47:26,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:26,499 INFO L93 Difference]: Finished difference Result 19775 states and 32105 transitions. [2022-01-11 06:47:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:47:26,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-01-11 06:47:26,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:26,544 INFO L225 Difference]: With dead ends: 19775 [2022-01-11 06:47:26,544 INFO L226 Difference]: Without dead ends: 14835 [2022-01-11 06:47:26,551 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 06:47:26,552 INFO L933 BasicCegarLoop]: 1286 mSDtfsCounter, 1306 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:47:26,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1306 Valid, 2819 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:47:26,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14835 states. [2022-01-11 06:47:26,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14835 to 5987. [2022-01-11 06:47:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5987 states, 5986 states have (on average 1.6369863013698631) internal successors, (9799), 5986 states have internal predecessors, (9799), 0 states have call successors, (0), 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 06:47:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5987 states to 5987 states and 9799 transitions. [2022-01-11 06:47:27,014 INFO L78 Accepts]: Start accepts. Automaton has 5987 states and 9799 transitions. Word has length 127 [2022-01-11 06:47:27,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:27,015 INFO L470 AbstractCegarLoop]: Abstraction has 5987 states and 9799 transitions. [2022-01-11 06:47:27,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 06:47:27,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5987 states and 9799 transitions. [2022-01-11 06:47:27,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-11 06:47:27,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:27,021 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] [2022-01-11 06:47:27,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:47:27,021 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:27,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:27,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1321555675, now seen corresponding path program 1 times [2022-01-11 06:47:27,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:27,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609503555] [2022-01-11 06:47:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:27,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:27,197 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 06:47:27,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:27,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609503555] [2022-01-11 06:47:27,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609503555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:27,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:27,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:47:27,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298744858] [2022-01-11 06:47:27,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:27,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:47:27,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:27,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:47:27,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:47:27,199 INFO L87 Difference]: Start difference. First operand 5987 states and 9799 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 06:47:28,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:28,010 INFO L93 Difference]: Finished difference Result 13716 states and 22579 transitions. [2022-01-11 06:47:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:47:28,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2022-01-11 06:47:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:28,030 INFO L225 Difference]: With dead ends: 13716 [2022-01-11 06:47:28,030 INFO L226 Difference]: Without dead ends: 9704 [2022-01-11 06:47:28,036 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 06:47:28,037 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 225 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:47:28,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 1099 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:47:28,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9704 states. [2022-01-11 06:47:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9704 to 9671. [2022-01-11 06:47:28,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9671 states, 9670 states have (on average 1.637952430196484) internal successors, (15839), 9670 states have internal predecessors, (15839), 0 states have call successors, (0), 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 06:47:28,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9671 states to 9671 states and 15839 transitions. [2022-01-11 06:47:28,742 INFO L78 Accepts]: Start accepts. Automaton has 9671 states and 15839 transitions. Word has length 129 [2022-01-11 06:47:28,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:28,742 INFO L470 AbstractCegarLoop]: Abstraction has 9671 states and 15839 transitions. [2022-01-11 06:47:28,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 06:47:28,743 INFO L276 IsEmpty]: Start isEmpty. Operand 9671 states and 15839 transitions. [2022-01-11 06:47:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 06:47:28,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:28,752 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] [2022-01-11 06:47:28,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:47:28,752 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:28,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:28,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1839010493, now seen corresponding path program 1 times [2022-01-11 06:47:28,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:28,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067072257] [2022-01-11 06:47:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:28,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:28,870 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 06:47:28,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:28,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067072257] [2022-01-11 06:47:28,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067072257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:28,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:28,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:47:28,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703712847] [2022-01-11 06:47:28,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:28,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:47:28,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:47:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:47:28,871 INFO L87 Difference]: Start difference. First operand 9671 states and 15839 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 06:47:30,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:30,032 INFO L93 Difference]: Finished difference Result 27089 states and 44188 transitions. [2022-01-11 06:47:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:47:30,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 06:47:30,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:30,070 INFO L225 Difference]: With dead ends: 27089 [2022-01-11 06:47:30,070 INFO L226 Difference]: Without dead ends: 18479 [2022-01-11 06:47:30,087 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 06:47:30,087 INFO L933 BasicCegarLoop]: 1063 mSDtfsCounter, 429 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:47:30,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1611 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:47:30,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18479 states. [2022-01-11 06:47:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18479 to 18477. [2022-01-11 06:47:31,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18477 states, 18476 states have (on average 1.6265425416756873) internal successors, (30052), 18476 states have internal predecessors, (30052), 0 states have call successors, (0), 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 06:47:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18477 states to 18477 states and 30052 transitions. [2022-01-11 06:47:31,379 INFO L78 Accepts]: Start accepts. Automaton has 18477 states and 30052 transitions. Word has length 132 [2022-01-11 06:47:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:31,379 INFO L470 AbstractCegarLoop]: Abstraction has 18477 states and 30052 transitions. [2022-01-11 06:47:31,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 06:47:31,380 INFO L276 IsEmpty]: Start isEmpty. Operand 18477 states and 30052 transitions. [2022-01-11 06:47:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 06:47:31,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:31,389 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] [2022-01-11 06:47:31,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:47:31,389 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:31,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:31,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1170213413, now seen corresponding path program 1 times [2022-01-11 06:47:31,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:31,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196300917] [2022-01-11 06:47:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:31,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:31,441 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 06:47:31,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:31,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196300917] [2022-01-11 06:47:31,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196300917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:31,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:31,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:47:31,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472299774] [2022-01-11 06:47:31,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:31,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:47:31,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:31,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:47:31,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:47:31,443 INFO L87 Difference]: Start difference. First operand 18477 states and 30052 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 06:47:32,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:32,850 INFO L93 Difference]: Finished difference Result 37294 states and 60528 transitions. [2022-01-11 06:47:32,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:47:32,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 06:47:32,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:32,910 INFO L225 Difference]: With dead ends: 37294 [2022-01-11 06:47:32,911 INFO L226 Difference]: Without dead ends: 27513 [2022-01-11 06:47:32,929 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 06:47:32,929 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 550 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1338 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 06:47:32,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1338 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:47:32,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27513 states. [2022-01-11 06:47:34,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27513 to 18477. [2022-01-11 06:47:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18477 states, 18476 states have (on average 1.6260012989824637) internal successors, (30042), 18476 states have internal predecessors, (30042), 0 states have call successors, (0), 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 06:47:34,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18477 states to 18477 states and 30042 transitions. [2022-01-11 06:47:34,354 INFO L78 Accepts]: Start accepts. Automaton has 18477 states and 30042 transitions. Word has length 132 [2022-01-11 06:47:34,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:34,354 INFO L470 AbstractCegarLoop]: Abstraction has 18477 states and 30042 transitions. [2022-01-11 06:47:34,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 06:47:34,354 INFO L276 IsEmpty]: Start isEmpty. Operand 18477 states and 30042 transitions. [2022-01-11 06:47:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 06:47:34,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:34,365 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] [2022-01-11 06:47:34,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:47:34,365 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:34,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:34,366 INFO L85 PathProgramCache]: Analyzing trace with hash 504872385, now seen corresponding path program 1 times [2022-01-11 06:47:34,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:34,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256860516] [2022-01-11 06:47:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:34,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:34,443 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 06:47:34,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:34,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256860516] [2022-01-11 06:47:34,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256860516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:34,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:34,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:47:34,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737192603] [2022-01-11 06:47:34,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:34,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:47:34,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:34,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:47:34,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:47:34,445 INFO L87 Difference]: Start difference. First operand 18477 states and 30042 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 06:47:37,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:37,347 INFO L93 Difference]: Finished difference Result 64590 states and 104589 transitions. [2022-01-11 06:47:37,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:47:37,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 06:47:37,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:37,441 INFO L225 Difference]: With dead ends: 64590 [2022-01-11 06:47:37,441 INFO L226 Difference]: Without dead ends: 47652 [2022-01-11 06:47:37,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:47:37,476 INFO L933 BasicCegarLoop]: 1322 mSDtfsCounter, 1257 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:47:37,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 2857 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:47:37,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47652 states. [2022-01-11 06:47:39,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47652 to 19329. [2022-01-11 06:47:39,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19329 states, 19328 states have (on average 1.6266038907284768) internal successors, (31439), 19328 states have internal predecessors, (31439), 0 states have call successors, (0), 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 06:47:39,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19329 states to 19329 states and 31439 transitions. [2022-01-11 06:47:39,077 INFO L78 Accepts]: Start accepts. Automaton has 19329 states and 31439 transitions. Word has length 132 [2022-01-11 06:47:39,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:39,078 INFO L470 AbstractCegarLoop]: Abstraction has 19329 states and 31439 transitions. [2022-01-11 06:47:39,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 06:47:39,078 INFO L276 IsEmpty]: Start isEmpty. Operand 19329 states and 31439 transitions. [2022-01-11 06:47:39,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-11 06:47:39,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:39,090 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] [2022-01-11 06:47:39,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:47:39,091 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:39,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:39,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1075369624, now seen corresponding path program 1 times [2022-01-11 06:47:39,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:39,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614344474] [2022-01-11 06:47:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:39,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:39,167 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 06:47:39,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:39,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614344474] [2022-01-11 06:47:39,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614344474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:39,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:39,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:47:39,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313424333] [2022-01-11 06:47:39,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:39,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:47:39,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:39,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:47:39,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:47:39,169 INFO L87 Difference]: Start difference. First operand 19329 states and 31439 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 06:47:41,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:41,385 INFO L93 Difference]: Finished difference Result 41377 states and 67745 transitions. [2022-01-11 06:47:41,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:47:41,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-01-11 06:47:41,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:41,431 INFO L225 Difference]: With dead ends: 41377 [2022-01-11 06:47:41,431 INFO L226 Difference]: Without dead ends: 26359 [2022-01-11 06:47:41,458 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 06:47:41,460 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 234 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:47:41,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 1125 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:47:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26359 states. [2022-01-11 06:47:43,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26359 to 25829. [2022-01-11 06:47:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25829 states, 25828 states have (on average 1.622541427907697) internal successors, (41907), 25828 states have internal predecessors, (41907), 0 states have call successors, (0), 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 06:47:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25829 states to 25829 states and 41907 transitions. [2022-01-11 06:47:43,322 INFO L78 Accepts]: Start accepts. Automaton has 25829 states and 41907 transitions. Word has length 133 [2022-01-11 06:47:43,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:43,322 INFO L470 AbstractCegarLoop]: Abstraction has 25829 states and 41907 transitions. [2022-01-11 06:47:43,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 06:47:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand 25829 states and 41907 transitions. [2022-01-11 06:47:43,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-11 06:47:43,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:43,333 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] [2022-01-11 06:47:43,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:47:43,333 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:43,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:43,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1211782053, now seen corresponding path program 1 times [2022-01-11 06:47:43,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:43,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702217047] [2022-01-11 06:47:43,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:43,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:43,444 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 06:47:43,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:43,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702217047] [2022-01-11 06:47:43,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702217047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:43,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:43,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:47:43,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569153901] [2022-01-11 06:47:43,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:43,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:47:43,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:43,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:47:43,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:47:43,445 INFO L87 Difference]: Start difference. First operand 25829 states and 41907 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 06:47:47,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:47,597 INFO L93 Difference]: Finished difference Result 75401 states and 122307 transitions. [2022-01-11 06:47:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:47:47,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-01-11 06:47:47,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:47:47,707 INFO L225 Difference]: With dead ends: 75401 [2022-01-11 06:47:47,708 INFO L226 Difference]: Without dead ends: 50488 [2022-01-11 06:47:47,737 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 06:47:47,738 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 1314 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:47:47,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 1261 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:47:47,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50488 states. [2022-01-11 06:47:52,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50488 to 50486. [2022-01-11 06:47:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50486 states, 50485 states have (on average 1.6173714964841042) internal successors, (81653), 50485 states have internal predecessors, (81653), 0 states have call successors, (0), 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 06:47:52,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50486 states to 50486 states and 81653 transitions. [2022-01-11 06:47:52,384 INFO L78 Accepts]: Start accepts. Automaton has 50486 states and 81653 transitions. Word has length 133 [2022-01-11 06:47:52,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:47:52,384 INFO L470 AbstractCegarLoop]: Abstraction has 50486 states and 81653 transitions. [2022-01-11 06:47:52,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 06:47:52,384 INFO L276 IsEmpty]: Start isEmpty. Operand 50486 states and 81653 transitions. [2022-01-11 06:47:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-11 06:47:52,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:47:52,406 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] [2022-01-11 06:47:52,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:47:52,406 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:47:52,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:47:52,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1881659444, now seen corresponding path program 1 times [2022-01-11 06:47:52,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:47:52,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036129727] [2022-01-11 06:47:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:47:52,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:47:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:47:52,529 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 06:47:52,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:47:52,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036129727] [2022-01-11 06:47:52,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036129727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:47:52,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:47:52,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:47:52,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675120272] [2022-01-11 06:47:52,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:47:52,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:47:52,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:47:52,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:47:52,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:47:52,531 INFO L87 Difference]: Start difference. First operand 50486 states and 81653 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 06:47:59,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:47:59,937 INFO L93 Difference]: Finished difference Result 136509 states and 220333 transitions. [2022-01-11 06:47:59,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:47:59,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2022-01-11 06:47:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:48:00,110 INFO L225 Difference]: With dead ends: 136509 [2022-01-11 06:48:00,110 INFO L226 Difference]: Without dead ends: 86603 [2022-01-11 06:48:00,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:48:00,160 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 2065 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:48:00,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2065 Valid, 2130 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:48:00,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86603 states. [2022-01-11 06:48:05,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86603 to 52268. [2022-01-11 06:48:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52268 states, 52267 states have (on average 1.6193582949088334) internal successors, (84639), 52267 states have internal predecessors, (84639), 0 states have call successors, (0), 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 06:48:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52268 states to 52268 states and 84639 transitions. [2022-01-11 06:48:05,359 INFO L78 Accepts]: Start accepts. Automaton has 52268 states and 84639 transitions. Word has length 135 [2022-01-11 06:48:05,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:48:05,359 INFO L470 AbstractCegarLoop]: Abstraction has 52268 states and 84639 transitions. [2022-01-11 06:48:05,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 06:48:05,359 INFO L276 IsEmpty]: Start isEmpty. Operand 52268 states and 84639 transitions. [2022-01-11 06:48:05,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-11 06:48:05,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:48:05,381 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] [2022-01-11 06:48:05,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:48:05,381 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:48:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:48:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash -288620058, now seen corresponding path program 1 times [2022-01-11 06:48:05,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:48:05,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016252323] [2022-01-11 06:48:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:48:05,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:48:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:48:05,461 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 06:48:05,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:48:05,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016252323] [2022-01-11 06:48:05,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016252323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:48:05,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:48:05,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:48:05,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505833106] [2022-01-11 06:48:05,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:48:05,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:48:05,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:48:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:48:05,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:48:05,463 INFO L87 Difference]: Start difference. First operand 52268 states and 84639 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 06:48:11,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:48:11,247 INFO L93 Difference]: Finished difference Result 93086 states and 151451 transitions. [2022-01-11 06:48:11,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:48:11,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-01-11 06:48:11,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:48:11,370 INFO L225 Difference]: With dead ends: 93086 [2022-01-11 06:48:11,370 INFO L226 Difference]: Without dead ends: 64788 [2022-01-11 06:48:11,398 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 06:48:11,399 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 224 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:48:11,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 1268 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:48:11,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64788 states. [2022-01-11 06:48:17,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64788 to 64786. [2022-01-11 06:48:17,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64786 states, 64785 states have (on average 1.6200818090607394) internal successors, (104957), 64785 states have internal predecessors, (104957), 0 states have call successors, (0), 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 06:48:17,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64786 states to 64786 states and 104957 transitions. [2022-01-11 06:48:17,385 INFO L78 Accepts]: Start accepts. Automaton has 64786 states and 104957 transitions. Word has length 136 [2022-01-11 06:48:17,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:48:17,386 INFO L470 AbstractCegarLoop]: Abstraction has 64786 states and 104957 transitions. [2022-01-11 06:48:17,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 06:48:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 64786 states and 104957 transitions. [2022-01-11 06:48:17,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-11 06:48:17,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:48:17,402 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] [2022-01-11 06:48:17,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:48:17,402 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:48:17,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:48:17,402 INFO L85 PathProgramCache]: Analyzing trace with hash -354717911, now seen corresponding path program 1 times [2022-01-11 06:48:17,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:48:17,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815166105] [2022-01-11 06:48:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:48:17,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:48:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:48:17,455 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 06:48:17,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:48:17,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815166105] [2022-01-11 06:48:17,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815166105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:48:17,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:48:17,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:48:17,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313977005] [2022-01-11 06:48:17,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:48:17,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:48:17,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:48:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:48:17,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:48:17,457 INFO L87 Difference]: Start difference. First operand 64786 states and 104957 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)