/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/openssl/s3_srvr.blast.14.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 15:56:09,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 15:56:09,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 15:56:09,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 15:56:09,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 15:56:09,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 15:56:09,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 15:56:09,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 15:56:09,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 15:56:09,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 15:56:09,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 15:56:09,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 15:56:09,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 15:56:09,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 15:56:09,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 15:56:09,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 15:56:09,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 15:56:09,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 15:56:09,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 15:56:09,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 15:56:09,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 15:56:09,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 15:56:09,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 15:56:09,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 15:56:09,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 15:56:09,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 15:56:09,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 15:56:09,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 15:56:09,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 15:56:09,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 15:56:09,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 15:56:09,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 15:56:09,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 15:56:09,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 15:56:09,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 15:56:09,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 15:56:09,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 15:56:09,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 15:56:09,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 15:56:09,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 15:56:09,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 15:56:09,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 15:56:09,692 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 15:56:09,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 15:56:09,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 15:56:09,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 15:56:09,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 15:56:09,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 15:56:09,693 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 15:56:09,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 15:56:09,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 15:56:09,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 15:56:09,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 15:56:09,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 15:56:09,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 15:56:09,694 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 15:56:09,694 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 15:56:09,694 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 15:56:09,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 15:56:09,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 15:56:09,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 15:56:09,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 15:56:09,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 15:56:09,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:56:09,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 15:56:09,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 15:56:09,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 15:56:09,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 15:56:09,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 15:56:09,695 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 15:56:09,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 15:56:09,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 15:56:09,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 15:56:09,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 15:56:09,696 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 15:56:09,696 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 15:56:09,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 15:56:09,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 15:56:09,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 15:56:09,933 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 15:56:09,933 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 15:56:09,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl/s3_srvr.blast.14.i.cil-1.c [2022-01-10 15:56:09,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/287b8a4a3/fb8a39b7fc244d5c889ad14ba34d9589/FLAG7491e41d9 [2022-01-10 15:56:10,411 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 15:56:10,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.14.i.cil-1.c [2022-01-10 15:56:10,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/287b8a4a3/fb8a39b7fc244d5c889ad14ba34d9589/FLAG7491e41d9 [2022-01-10 15:56:10,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/287b8a4a3/fb8a39b7fc244d5c889ad14ba34d9589 [2022-01-10 15:56:10,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 15:56:10,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 15:56:10,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 15:56:10,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 15:56:10,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 15:56:10,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:56:10" (1/1) ... [2022-01-10 15:56:10,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a2691a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:56:10, skipping insertion in model container [2022-01-10 15:56:10,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:56:10" (1/1) ... [2022-01-10 15:56:10,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 15:56:10,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:56:11,137 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2022-01-10 15:56:11,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:56:11,171 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 15:56:11,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:56:11,288 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2022-01-10 15:56:11,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:56:11,299 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 15:56:11,391 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl/s3_srvr.blast.14.i.cil-1.c[76536,76549] [2022-01-10 15:56:11,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:56:11,408 INFO L208 MainTranslator]: Completed translation [2022-01-10 15:56:11,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:56:11 WrapperNode [2022-01-10 15:56:11,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 15:56:11,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 15:56:11,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 15:56:11,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 15:56:11,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:56:11" (1/1) ... [2022-01-10 15:56:11,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:56:11" (1/1) ... [2022-01-10 15:56:11,469 INFO L137 Inliner]: procedures = 41, calls = 248, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 797 [2022-01-10 15:56:11,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 15:56:11,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 15:56:11,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 15:56:11,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 15:56:11,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:56:11" (1/1) ... [2022-01-10 15:56:11,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:56:11" (1/1) ... [2022-01-10 15:56:11,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:56:11" (1/1) ... [2022-01-10 15:56:11,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:56:11" (1/1) ... [2022-01-10 15:56:11,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:56:11" (1/1) ... [2022-01-10 15:56:11,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:56:11" (1/1) ... [2022-01-10 15:56:11,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:56:11" (1/1) ... [2022-01-10 15:56:11,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 15:56:11,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 15:56:11,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 15:56:11,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 15:56:11,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:56:11" (1/1) ... [2022-01-10 15:56:11,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:56:11,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:56:11,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 15:56:11,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 15:56:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 15:56:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 15:56:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 15:56:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 15:56:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 15:56:11,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 15:56:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 15:56:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 15:56:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 15:56:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 15:56:11,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 15:56:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 15:56:11,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 15:56:11,729 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 15:56:11,730 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 15:56:11,740 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 15:56:23,178 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-01-10 15:56:23,178 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-01-10 15:56:23,178 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 15:56:23,184 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 15:56:23,184 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 15:56:23,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:56:23 BoogieIcfgContainer [2022-01-10 15:56:23,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 15:56:23,186 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 15:56:23,186 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 15:56:23,188 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 15:56:23,190 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:56:23" (1/1) ... [2022-01-10 15:56:23,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:56:23 BasicIcfg [2022-01-10 15:56:23,373 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 15:56:23,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 15:56:23,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 15:56:23,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 15:56:23,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:56:10" (1/4) ... [2022-01-10 15:56:23,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676a154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:56:23, skipping insertion in model container [2022-01-10 15:56:23,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:56:11" (2/4) ... [2022-01-10 15:56:23,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676a154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:56:23, skipping insertion in model container [2022-01-10 15:56:23,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:56:23" (3/4) ... [2022-01-10 15:56:23,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676a154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:56:23, skipping insertion in model container [2022-01-10 15:56:23,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:56:23" (4/4) ... [2022-01-10 15:56:23,380 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.14.i.cil-1.cTransformedIcfg [2022-01-10 15:56:23,384 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 15:56:23,384 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 15:56:23,435 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 15:56:23,441 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 15:56:23,441 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 15:56:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 154 states have (on average 1.7272727272727273) internal successors, (266), 155 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 15:56:23,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:56:23,464 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] [2022-01-10 15:56:23,464 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:56:23,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:56:23,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2055089926, now seen corresponding path program 1 times [2022-01-10 15:56:23,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:56:23,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838702713] [2022-01-10 15:56:23,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:56:23,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:56:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:56:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:56:24,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:56:24,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838702713] [2022-01-10 15:56:24,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838702713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:56:24,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:56:24,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:56:24,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898614863] [2022-01-10 15:56:24,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:56:24,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:56:24,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:56:24,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:56:24,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:56:24,338 INFO L87 Difference]: Start difference. First operand has 156 states, 154 states have (on average 1.7272727272727273) internal successors, (266), 155 states have internal predecessors, (266), 0 states have call successors, (0), 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 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:24,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:56:24,542 INFO L93 Difference]: Finished difference Result 445 states and 764 transitions. [2022-01-10 15:56:24,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:56:24,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 15:56:24,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:56:24,553 INFO L225 Difference]: With dead ends: 445 [2022-01-10 15:56:24,553 INFO L226 Difference]: Without dead ends: 273 [2022-01-10 15:56:24,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:56:24,562 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 199 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:56:24,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 467 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 15:56:24,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-10 15:56:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-01-10 15:56:24,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.5147058823529411) internal successors, (412), 272 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:24,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 412 transitions. [2022-01-10 15:56:24,617 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 412 transitions. Word has length 45 [2022-01-10 15:56:24,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:56:24,618 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 412 transitions. [2022-01-10 15:56:24,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 412 transitions. [2022-01-10 15:56:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 15:56:24,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:56:24,626 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:56:24,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 15:56:24,627 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:56:24,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:56:24,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1009525522, now seen corresponding path program 1 times [2022-01-10 15:56:24,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:56:24,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553200566] [2022-01-10 15:56:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:56:24,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:56:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:56:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:56:25,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:56:25,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553200566] [2022-01-10 15:56:25,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553200566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:56:25,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:56:25,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:56:25,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880776577] [2022-01-10 15:56:25,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:56:25,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:56:25,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:56:25,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:56:25,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:56:25,073 INFO L87 Difference]: Start difference. First operand 273 states and 412 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:56:25,725 INFO L93 Difference]: Finished difference Result 534 states and 823 transitions. [2022-01-10 15:56:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:56:25,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 15:56:25,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:56:25,728 INFO L225 Difference]: With dead ends: 534 [2022-01-10 15:56:25,728 INFO L226 Difference]: Without dead ends: 401 [2022-01-10 15:56:25,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:56:25,730 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 148 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 15:56:25,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 579 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 15:56:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-01-10 15:56:25,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-01-10 15:56:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.4975) internal successors, (599), 400 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 599 transitions. [2022-01-10 15:56:25,742 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 599 transitions. Word has length 62 [2022-01-10 15:56:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:56:25,743 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 599 transitions. [2022-01-10 15:56:25,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 599 transitions. [2022-01-10 15:56:25,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 15:56:25,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:56:25,745 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:56:25,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 15:56:25,745 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:56:25,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:56:25,746 INFO L85 PathProgramCache]: Analyzing trace with hash -284512688, now seen corresponding path program 1 times [2022-01-10 15:56:25,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:56:25,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890316745] [2022-01-10 15:56:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:56:25,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:56:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:56:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 15:56:26,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:56:26,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890316745] [2022-01-10 15:56:26,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890316745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:56:26,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:56:26,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:56:26,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76943459] [2022-01-10 15:56:26,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:56:26,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:56:26,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:56:26,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:56:26,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:56:26,109 INFO L87 Difference]: Start difference. First operand 401 states and 599 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:56:26,239 INFO L93 Difference]: Finished difference Result 793 states and 1201 transitions. [2022-01-10 15:56:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:56:26,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 15:56:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:56:26,242 INFO L225 Difference]: With dead ends: 793 [2022-01-10 15:56:26,242 INFO L226 Difference]: Without dead ends: 532 [2022-01-10 15:56:26,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:56:26,244 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 160 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:56:26,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 383 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:56:26,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-01-10 15:56:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2022-01-10 15:56:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 531 states have (on average 1.4934086629001884) internal successors, (793), 531 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:26,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 793 transitions. [2022-01-10 15:56:26,276 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 793 transitions. Word has length 84 [2022-01-10 15:56:26,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:56:26,277 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 793 transitions. [2022-01-10 15:56:26,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:26,277 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 793 transitions. [2022-01-10 15:56:26,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 15:56:26,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:56:26,280 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:56:26,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 15:56:26,280 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:56:26,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:56:26,281 INFO L85 PathProgramCache]: Analyzing trace with hash -561734342, now seen corresponding path program 1 times [2022-01-10 15:56:26,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:56:26,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040822875] [2022-01-10 15:56:26,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:56:26,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:56:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:56:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 15:56:26,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:56:26,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040822875] [2022-01-10 15:56:26,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040822875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:56:26,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:56:26,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 15:56:26,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525627066] [2022-01-10 15:56:26,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:56:26,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 15:56:26,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:56:26,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 15:56:26,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 15:56:26,809 INFO L87 Difference]: Start difference. First operand 532 states and 793 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:28,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:56:30,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:56:33,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:56:36,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:56:41,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:56:44,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:56:48,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:56:54,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:56:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:56:58,108 INFO L93 Difference]: Finished difference Result 1492 states and 2231 transitions. [2022-01-10 15:56:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 15:56:58,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 108 [2022-01-10 15:56:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:56:58,118 INFO L225 Difference]: With dead ends: 1492 [2022-01-10 15:56:58,118 INFO L226 Difference]: Without dead ends: 970 [2022-01-10 15:56:58,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 15:56:58,120 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 120 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 13 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:56:58,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 524 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 258 Invalid, 6 Unknown, 0 Unchecked, 31.2s Time] [2022-01-10 15:56:58,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-01-10 15:56:58,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 635. [2022-01-10 15:56:58,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 1.526813880126183) internal successors, (968), 634 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 968 transitions. [2022-01-10 15:56:58,174 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 968 transitions. Word has length 108 [2022-01-10 15:56:58,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:56:58,175 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 968 transitions. [2022-01-10 15:56:58,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:58,175 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 968 transitions. [2022-01-10 15:56:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 15:56:58,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:56:58,180 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:56:58,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 15:56:58,180 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:56:58,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:56:58,182 INFO L85 PathProgramCache]: Analyzing trace with hash 742659387, now seen corresponding path program 1 times [2022-01-10 15:56:58,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:56:58,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875164248] [2022-01-10 15:56:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:56:58,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:56:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:56:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 15:56:58,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:56:58,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875164248] [2022-01-10 15:56:58,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875164248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:56:58,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:56:58,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:56:58,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672297367] [2022-01-10 15:56:58,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:56:58,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:56:58,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:56:58,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:56:58,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:56:58,512 INFO L87 Difference]: Start difference. First operand 635 states and 968 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:58,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:56:58,658 INFO L93 Difference]: Finished difference Result 1261 states and 1939 transitions. [2022-01-10 15:56:58,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:56:58,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-01-10 15:56:58,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:56:58,661 INFO L225 Difference]: With dead ends: 1261 [2022-01-10 15:56:58,661 INFO L226 Difference]: Without dead ends: 792 [2022-01-10 15:56:58,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:56:58,663 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:56:58,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 382 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:56:58,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2022-01-10 15:56:58,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 792. [2022-01-10 15:56:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 791 states have (on average 1.5259165613147914) internal successors, (1207), 791 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1207 transitions. [2022-01-10 15:56:58,687 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1207 transitions. Word has length 108 [2022-01-10 15:56:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:56:58,688 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 1207 transitions. [2022-01-10 15:56:58,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1207 transitions. [2022-01-10 15:56:58,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 15:56:58,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:56:58,690 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:56:58,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 15:56:58,691 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:56:58,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:56:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash 351604878, now seen corresponding path program 1 times [2022-01-10 15:56:58,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:56:58,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094561119] [2022-01-10 15:56:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:56:58,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:56:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:56:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-01-10 15:56:59,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:56:59,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094561119] [2022-01-10 15:56:59,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094561119] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:56:59,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:56:59,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:56:59,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240323894] [2022-01-10 15:56:59,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:56:59,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:56:59,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:56:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:56:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:56:59,067 INFO L87 Difference]: Start difference. First operand 792 states and 1207 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:59,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:56:59,245 INFO L93 Difference]: Finished difference Result 1575 states and 2417 transitions. [2022-01-10 15:56:59,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:56:59,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 137 [2022-01-10 15:56:59,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:56:59,249 INFO L225 Difference]: With dead ends: 1575 [2022-01-10 15:56:59,249 INFO L226 Difference]: Without dead ends: 949 [2022-01-10 15:56:59,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:56:59,253 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:56:59,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 381 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 15:56:59,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-01-10 15:56:59,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 949. [2022-01-10 15:56:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 948 states have (on average 1.5263713080168777) internal successors, (1447), 948 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1447 transitions. [2022-01-10 15:56:59,278 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1447 transitions. Word has length 137 [2022-01-10 15:56:59,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:56:59,278 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1447 transitions. [2022-01-10 15:56:59,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:59,278 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1447 transitions. [2022-01-10 15:56:59,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 15:56:59,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:56:59,280 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:56:59,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 15:56:59,280 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:56:59,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:56:59,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1198046488, now seen corresponding path program 1 times [2022-01-10 15:56:59,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:56:59,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052210487] [2022-01-10 15:56:59,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:56:59,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:56:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:56:59,688 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-01-10 15:56:59,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:56:59,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052210487] [2022-01-10 15:56:59,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052210487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:56:59,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:56:59,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:56:59,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29176241] [2022-01-10 15:56:59,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:56:59,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:56:59,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:56:59,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:56:59,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:56:59,690 INFO L87 Difference]: Start difference. First operand 949 states and 1447 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:59,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:56:59,838 INFO L93 Difference]: Finished difference Result 1889 states and 2897 transitions. [2022-01-10 15:56:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:56:59,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2022-01-10 15:56:59,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:56:59,842 INFO L225 Difference]: With dead ends: 1889 [2022-01-10 15:56:59,842 INFO L226 Difference]: Without dead ends: 1106 [2022-01-10 15:56:59,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:56:59,844 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 162 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:56:59,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 380 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:56:59,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2022-01-10 15:56:59,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1106. [2022-01-10 15:56:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 1.527601809954751) internal successors, (1688), 1105 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:59,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1688 transitions. [2022-01-10 15:56:59,892 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1688 transitions. Word has length 168 [2022-01-10 15:56:59,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:56:59,892 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 1688 transitions. [2022-01-10 15:56:59,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:56:59,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1688 transitions. [2022-01-10 15:56:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-10 15:56:59,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:56:59,895 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:56:59,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 15:56:59,895 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:56:59,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:56:59,895 INFO L85 PathProgramCache]: Analyzing trace with hash 219546631, now seen corresponding path program 1 times [2022-01-10 15:56:59,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:56:59,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519622246] [2022-01-10 15:56:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:56:59,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:57:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:57:00,358 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-01-10 15:57:00,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:57:00,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519622246] [2022-01-10 15:57:00,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519622246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:57:00,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:57:00,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:57:00,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434582877] [2022-01-10 15:57:00,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:57:00,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:57:00,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:57:00,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:57:00,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:00,363 INFO L87 Difference]: Start difference. First operand 1106 states and 1688 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:00,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:57:00,541 INFO L93 Difference]: Finished difference Result 2203 states and 3379 transitions. [2022-01-10 15:57:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:57:00,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 200 [2022-01-10 15:57:00,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:57:00,545 INFO L225 Difference]: With dead ends: 2203 [2022-01-10 15:57:00,546 INFO L226 Difference]: Without dead ends: 1263 [2022-01-10 15:57:00,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:00,547 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:57:00,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 379 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:57:00,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-01-10 15:57:00,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1263. [2022-01-10 15:57:00,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1262 states have (on average 1.5293185419968305) internal successors, (1930), 1262 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1930 transitions. [2022-01-10 15:57:00,574 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1930 transitions. Word has length 200 [2022-01-10 15:57:00,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:57:00,574 INFO L470 AbstractCegarLoop]: Abstraction has 1263 states and 1930 transitions. [2022-01-10 15:57:00,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:00,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1930 transitions. [2022-01-10 15:57:00,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-10 15:57:00,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:57:00,579 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:57:00,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 15:57:00,579 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:57:00,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:57:00,579 INFO L85 PathProgramCache]: Analyzing trace with hash -13952066, now seen corresponding path program 1 times [2022-01-10 15:57:00,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:57:00,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136654484] [2022-01-10 15:57:00,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:57:00,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:57:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:57:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-01-10 15:57:01,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:57:01,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136654484] [2022-01-10 15:57:01,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136654484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:57:01,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:57:01,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:57:01,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063060367] [2022-01-10 15:57:01,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:57:01,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:57:01,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:57:01,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:57:01,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:01,026 INFO L87 Difference]: Start difference. First operand 1263 states and 1930 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:57:01,193 INFO L93 Difference]: Finished difference Result 2517 states and 3863 transitions. [2022-01-10 15:57:01,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:57:01,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 202 [2022-01-10 15:57:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:57:01,197 INFO L225 Difference]: With dead ends: 2517 [2022-01-10 15:57:01,197 INFO L226 Difference]: Without dead ends: 1420 [2022-01-10 15:57:01,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:01,202 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 162 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:57:01,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 378 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:57:01,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2022-01-10 15:57:01,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1420. [2022-01-10 15:57:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 1.5313601127554617) internal successors, (2173), 1419 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:01,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2173 transitions. [2022-01-10 15:57:01,235 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2173 transitions. Word has length 202 [2022-01-10 15:57:01,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:57:01,235 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 2173 transitions. [2022-01-10 15:57:01,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2173 transitions. [2022-01-10 15:57:01,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-01-10 15:57:01,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:57:01,238 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:57:01,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 15:57:01,238 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:57:01,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:57:01,239 INFO L85 PathProgramCache]: Analyzing trace with hash -176885427, now seen corresponding path program 1 times [2022-01-10 15:57:01,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:57:01,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564799179] [2022-01-10 15:57:01,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:57:01,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:57:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:57:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-01-10 15:57:01,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:57:01,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564799179] [2022-01-10 15:57:01,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564799179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:57:01,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:57:01,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:57:01,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834156965] [2022-01-10 15:57:01,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:57:01,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:57:01,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:57:01,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:57:01,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:01,667 INFO L87 Difference]: Start difference. First operand 1420 states and 2173 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) [2022-01-10 15:57:01,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:57:01,877 INFO L93 Difference]: Finished difference Result 2831 states and 4349 transitions. [2022-01-10 15:57:01,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:57:01,877 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 235 [2022-01-10 15:57:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:57:01,882 INFO L225 Difference]: With dead ends: 2831 [2022-01-10 15:57:01,882 INFO L226 Difference]: Without dead ends: 1577 [2022-01-10 15:57:01,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:01,884 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 162 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:57:01,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 377 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 15:57:01,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2022-01-10 15:57:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1577. [2022-01-10 15:57:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1577 states, 1576 states have (on average 1.5336294416243654) internal successors, (2417), 1576 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:01,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1577 states to 1577 states and 2417 transitions. [2022-01-10 15:57:01,934 INFO L78 Accepts]: Start accepts. Automaton has 1577 states and 2417 transitions. Word has length 235 [2022-01-10 15:57:01,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:57:01,934 INFO L470 AbstractCegarLoop]: Abstraction has 1577 states and 2417 transitions. [2022-01-10 15:57:01,934 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) [2022-01-10 15:57:01,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states and 2417 transitions. [2022-01-10 15:57:01,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-01-10 15:57:01,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:57:01,938 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:57:01,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 15:57:01,938 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:57:01,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:57:01,939 INFO L85 PathProgramCache]: Analyzing trace with hash 421786265, now seen corresponding path program 1 times [2022-01-10 15:57:01,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:57:01,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188825160] [2022-01-10 15:57:01,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:57:01,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:57:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:57:02,486 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-01-10 15:57:02,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:57:02,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188825160] [2022-01-10 15:57:02,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188825160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:57:02,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:57:02,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:57:02,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484848087] [2022-01-10 15:57:02,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:57:02,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:57:02,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:57:02,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:57:02,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:02,489 INFO L87 Difference]: Start difference. First operand 1577 states and 2417 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:57:02,903 INFO L93 Difference]: Finished difference Result 3139 states and 4828 transitions. [2022-01-10 15:57:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:57:02,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 270 [2022-01-10 15:57:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:57:02,909 INFO L225 Difference]: With dead ends: 3139 [2022-01-10 15:57:02,909 INFO L226 Difference]: Without dead ends: 1728 [2022-01-10 15:57:02,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:02,911 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 148 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 15:57:02,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 581 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 15:57:02,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2022-01-10 15:57:02,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1728. [2022-01-10 15:57:02,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 1.5315576143601621) internal successors, (2645), 1727 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2645 transitions. [2022-01-10 15:57:02,982 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2645 transitions. Word has length 270 [2022-01-10 15:57:02,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:57:02,983 INFO L470 AbstractCegarLoop]: Abstraction has 1728 states and 2645 transitions. [2022-01-10 15:57:02,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:02,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2645 transitions. [2022-01-10 15:57:02,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-01-10 15:57:02,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:57:02,987 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:57:02,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 15:57:02,987 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:57:02,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:57:02,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1335527264, now seen corresponding path program 1 times [2022-01-10 15:57:02,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:57:02,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713478391] [2022-01-10 15:57:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:57:02,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:57:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:57:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 911 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2022-01-10 15:57:03,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:57:03,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713478391] [2022-01-10 15:57:03,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713478391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:57:03,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:57:03,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:57:03,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926589120] [2022-01-10 15:57:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:57:03,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:57:03,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:57:03,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:57:03,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:03,502 INFO L87 Difference]: Start difference. First operand 1728 states and 2645 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) [2022-01-10 15:57:03,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:57:03,700 INFO L93 Difference]: Finished difference Result 3447 states and 5293 transitions. [2022-01-10 15:57:03,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:57:03,701 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 309 [2022-01-10 15:57:03,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:57:03,705 INFO L225 Difference]: With dead ends: 3447 [2022-01-10 15:57:03,706 INFO L226 Difference]: Without dead ends: 1885 [2022-01-10 15:57:03,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:03,707 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 160 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:57:03,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 375 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 15:57:03,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2022-01-10 15:57:03,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1885. [2022-01-10 15:57:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1884 states have (on average 1.5345010615711252) internal successors, (2891), 1884 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2891 transitions. [2022-01-10 15:57:03,786 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2891 transitions. Word has length 309 [2022-01-10 15:57:03,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:57:03,786 INFO L470 AbstractCegarLoop]: Abstraction has 1885 states and 2891 transitions. [2022-01-10 15:57:03,787 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) [2022-01-10 15:57:03,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2891 transitions. [2022-01-10 15:57:03,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-01-10 15:57:03,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:57:03,792 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:57:03,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 15:57:03,793 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:57:03,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:57:03,793 INFO L85 PathProgramCache]: Analyzing trace with hash -611576623, now seen corresponding path program 1 times [2022-01-10 15:57:03,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:57:03,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060346136] [2022-01-10 15:57:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:57:03,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:57:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:57:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2022-01-10 15:57:04,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:57:04,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060346136] [2022-01-10 15:57:04,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060346136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:57:04,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:57:04,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:57:04,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778179489] [2022-01-10 15:57:04,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:57:04,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:57:04,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:57:04,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:57:04,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:04,327 INFO L87 Difference]: Start difference. First operand 1885 states and 2891 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:04,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:57:04,500 INFO L93 Difference]: Finished difference Result 3761 states and 5785 transitions. [2022-01-10 15:57:04,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:57:04,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 350 [2022-01-10 15:57:04,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:57:04,505 INFO L225 Difference]: With dead ends: 3761 [2022-01-10 15:57:04,505 INFO L226 Difference]: Without dead ends: 2042 [2022-01-10 15:57:04,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:04,508 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:57:04,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 374 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:57:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2022-01-10 15:57:04,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 2042. [2022-01-10 15:57:04,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 2041 states have (on average 1.537481626653601) internal successors, (3138), 2041 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:04,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 3138 transitions. [2022-01-10 15:57:04,563 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 3138 transitions. Word has length 350 [2022-01-10 15:57:04,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:57:04,563 INFO L470 AbstractCegarLoop]: Abstraction has 2042 states and 3138 transitions. [2022-01-10 15:57:04,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:04,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 3138 transitions. [2022-01-10 15:57:04,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-01-10 15:57:04,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:57:04,569 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:57:04,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 15:57:04,570 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:57:04,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:57:04,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1462670789, now seen corresponding path program 1 times [2022-01-10 15:57:04,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:57:04,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546143830] [2022-01-10 15:57:04,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:57:04,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:57:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:57:05,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2022-01-10 15:57:05,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:57:05,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546143830] [2022-01-10 15:57:05,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546143830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:57:05,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:57:05,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:57:05,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926559045] [2022-01-10 15:57:05,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:57:05,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:57:05,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:57:05,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:57:05,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:05,194 INFO L87 Difference]: Start difference. First operand 2042 states and 3138 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:05,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:57:05,741 INFO L93 Difference]: Finished difference Result 4070 states and 6272 transitions. [2022-01-10 15:57:05,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:57:05,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 393 [2022-01-10 15:57:05,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:57:05,748 INFO L225 Difference]: With dead ends: 4070 [2022-01-10 15:57:05,748 INFO L226 Difference]: Without dead ends: 2194 [2022-01-10 15:57:05,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:05,751 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 146 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 15:57:05,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 581 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 15:57:05,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2022-01-10 15:57:05,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 2194. [2022-01-10 15:57:05,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 2193 states have (on average 1.5353397172822618) internal successors, (3367), 2193 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:05,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 3367 transitions. [2022-01-10 15:57:05,810 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 3367 transitions. Word has length 393 [2022-01-10 15:57:05,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:57:05,811 INFO L470 AbstractCegarLoop]: Abstraction has 2194 states and 3367 transitions. [2022-01-10 15:57:05,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:05,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 3367 transitions. [2022-01-10 15:57:05,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-01-10 15:57:05,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:57:05,817 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:57:05,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 15:57:05,817 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:57:05,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:57:05,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1802101926, now seen corresponding path program 1 times [2022-01-10 15:57:05,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:57:05,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061392550] [2022-01-10 15:57:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:57:05,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:57:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:57:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2022-01-10 15:57:06,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:57:06,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061392550] [2022-01-10 15:57:06,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061392550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:57:06,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:57:06,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:57:06,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938768156] [2022-01-10 15:57:06,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:57:06,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:57:06,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:57:06,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:57:06,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:06,498 INFO L87 Difference]: Start difference. First operand 2194 states and 3367 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:06,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:57:06,673 INFO L93 Difference]: Finished difference Result 4379 states and 6737 transitions. [2022-01-10 15:57:06,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:57:06,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2022-01-10 15:57:06,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:57:06,681 INFO L225 Difference]: With dead ends: 4379 [2022-01-10 15:57:06,681 INFO L226 Difference]: Without dead ends: 2351 [2022-01-10 15:57:06,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:06,685 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 160 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:57:06,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 372 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:57:06,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2022-01-10 15:57:06,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 2351. [2022-01-10 15:57:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 2350 states have (on average 1.538723404255319) internal successors, (3616), 2350 states have internal predecessors, (3616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 3616 transitions. [2022-01-10 15:57:06,749 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 3616 transitions. Word has length 433 [2022-01-10 15:57:06,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:57:06,750 INFO L470 AbstractCegarLoop]: Abstraction has 2351 states and 3616 transitions. [2022-01-10 15:57:06,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 3616 transitions. [2022-01-10 15:57:06,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-01-10 15:57:06,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:57:06,757 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:57:06,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 15:57:06,757 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:57:06,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:57:06,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2133601986, now seen corresponding path program 1 times [2022-01-10 15:57:06,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:57:06,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772737203] [2022-01-10 15:57:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:57:06,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:57:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:57:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 1772 trivial. 0 not checked. [2022-01-10 15:57:07,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:57:07,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772737203] [2022-01-10 15:57:07,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772737203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:57:07,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:57:07,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:57:07,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807699670] [2022-01-10 15:57:07,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:57:07,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:57:07,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:57:07,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:57:07,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:07,459 INFO L87 Difference]: Start difference. First operand 2351 states and 3616 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:07,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:57:07,635 INFO L93 Difference]: Finished difference Result 2510 states and 3868 transitions. [2022-01-10 15:57:07,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:57:07,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 475 [2022-01-10 15:57:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:57:07,643 INFO L225 Difference]: With dead ends: 2510 [2022-01-10 15:57:07,643 INFO L226 Difference]: Without dead ends: 2508 [2022-01-10 15:57:07,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:57:07,645 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:57:07,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 371 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:57:07,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2022-01-10 15:57:07,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2508. [2022-01-10 15:57:07,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2507 states have (on average 1.5420821699242122) internal successors, (3866), 2507 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 3866 transitions. [2022-01-10 15:57:07,706 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 3866 transitions. Word has length 475 [2022-01-10 15:57:07,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:57:07,706 INFO L470 AbstractCegarLoop]: Abstraction has 2508 states and 3866 transitions. [2022-01-10 15:57:07,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:07,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 3866 transitions. [2022-01-10 15:57:07,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-01-10 15:57:07,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:57:07,716 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:57:07,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 15:57:07,717 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:57:07,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:57:07,717 INFO L85 PathProgramCache]: Analyzing trace with hash 697853633, now seen corresponding path program 1 times [2022-01-10 15:57:07,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:57:07,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516431926] [2022-01-10 15:57:07,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:57:07,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:57:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:57:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2528 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2022-01-10 15:57:08,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:57:08,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516431926] [2022-01-10 15:57:08,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516431926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:57:08,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:57:08,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 15:57:08,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408595165] [2022-01-10 15:57:08,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:57:08,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 15:57:08,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:57:08,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 15:57:08,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:57:08,613 INFO L87 Difference]: Start difference. First operand 2508 states and 3866 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:57:10,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:57:13,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:57:15,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:57:17,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:57:19,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []