/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/product-lines/email_spec4_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:07:03,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:07:03,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:07:03,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:07:03,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:07:03,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:07:03,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:07:03,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:07:03,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:07:03,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:07:03,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:07:03,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:07:03,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:07:03,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:07:03,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:07:03,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:07:03,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:07:03,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:07:03,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:07:03,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:07:03,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:07:03,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:07:03,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:07:03,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:07:03,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:07:03,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:07:03,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:07:03,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:07:03,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:07:03,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:07:03,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:07:03,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:07:03,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:07:03,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:07:03,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:07:03,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:07:03,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:07:03,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:07:03,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:07:03,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:07:03,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:07:03,707 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 18:07:03,725 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:07:03,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:07:03,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:07:03,725 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:07:03,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:07:03,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:07:03,727 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:07:03,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:07:03,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:07:03,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:07:03,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:07:03,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:07:03,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:07:03,728 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:07:03,728 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:07:03,729 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:07:03,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:07:03,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:07:03,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:07:03,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:07:03,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:07:03,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:07:03,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:07:03,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:07:03,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:07:03,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:07:03,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:07:03,731 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:07:03,731 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:07:03,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:07:03,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:07:03,732 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:07:03,733 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:07:03,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:07:03,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:07:03,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:07:03,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:07:03,955 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:07:03,955 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:07:03,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product29.cil.c [2022-01-10 18:07:04,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c363eb26f/007b426cb3c54cd9838ba5ff4f83abaa/FLAGfeaaf8aba [2022-01-10 18:07:04,518 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:07:04,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product29.cil.c [2022-01-10 18:07:04,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c363eb26f/007b426cb3c54cd9838ba5ff4f83abaa/FLAGfeaaf8aba [2022-01-10 18:07:05,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c363eb26f/007b426cb3c54cd9838ba5ff4f83abaa [2022-01-10 18:07:05,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:07:05,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:07:05,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:07:05,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:07:05,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:07:05,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:07:05" (1/1) ... [2022-01-10 18:07:05,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3370b576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:05, skipping insertion in model container [2022-01-10 18:07:05,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:07:05" (1/1) ... [2022-01-10 18:07:05,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:07:05,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:07:05,608 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product29.cil.c[58438,58451] [2022-01-10 18:07:05,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:07:05,666 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:07:05,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:07:05,756 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product29.cil.c[58438,58451] [2022-01-10 18:07:05,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:07:05,767 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:07:05,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product29.cil.c[58438,58451] [2022-01-10 18:07:05,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:07:05,882 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:07:05,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:05 WrapperNode [2022-01-10 18:07:05,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:07:05,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:07:05,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:07:05,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:07:05,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:05" (1/1) ... [2022-01-10 18:07:05,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:05" (1/1) ... [2022-01-10 18:07:06,018 INFO L137 Inliner]: procedures = 133, calls = 227, calls flagged for inlining = 136, calls inlined = 302, statements flattened = 4809 [2022-01-10 18:07:06,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:07:06,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:07:06,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:07:06,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:07:06,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:05" (1/1) ... [2022-01-10 18:07:06,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:05" (1/1) ... [2022-01-10 18:07:06,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:05" (1/1) ... [2022-01-10 18:07:06,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:05" (1/1) ... [2022-01-10 18:07:06,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:05" (1/1) ... [2022-01-10 18:07:06,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:05" (1/1) ... [2022-01-10 18:07:06,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:05" (1/1) ... [2022-01-10 18:07:06,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:07:06,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:07:06,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:07:06,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:07:06,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:05" (1/1) ... [2022-01-10 18:07:06,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:07:06,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:07:06,201 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 18:07:06,217 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 18:07:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:07:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:07:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:07:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:07:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:07:06,472 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:07:06,473 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:07:08,314 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:07:08,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:07:08,337 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:07:08,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:08 BoogieIcfgContainer [2022-01-10 18:07:08,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:07:08,348 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:07:08,348 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:07:08,350 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:07:08,352 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:08" (1/1) ... [2022-01-10 18:07:08,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:07:08 BasicIcfg [2022-01-10 18:07:08,806 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:07:08,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:07:08,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:07:08,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:07:08,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:07:05" (1/4) ... [2022-01-10 18:07:08,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f90691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:07:08, skipping insertion in model container [2022-01-10 18:07:08,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:07:05" (2/4) ... [2022-01-10 18:07:08,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f90691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:07:08, skipping insertion in model container [2022-01-10 18:07:08,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:07:08" (3/4) ... [2022-01-10 18:07:08,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f90691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:07:08, skipping insertion in model container [2022-01-10 18:07:08,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:07:08" (4/4) ... [2022-01-10 18:07:08,812 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product29.cil.cTransformedIcfg [2022-01-10 18:07:08,816 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:07:08,816 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 18:07:08,867 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:07:08,874 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 18:07:08,874 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 18:07:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 1093 states, 1086 states have (on average 1.701657458563536) internal successors, (1848), 1092 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 18:07:08,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 18:07:08,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:08,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:08,921 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:08,926 INFO L85 PathProgramCache]: Analyzing trace with hash -505630017, now seen corresponding path program 1 times [2022-01-10 18:07:08,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:08,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792239305] [2022-01-10 18:07:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:08,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:09,258 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 18:07:09,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:09,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792239305] [2022-01-10 18:07:09,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792239305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:09,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:09,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:07:09,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791188950] [2022-01-10 18:07:09,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:09,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:07:09,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:07:09,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:07:09,294 INFO L87 Difference]: Start difference. First operand has 1093 states, 1086 states have (on average 1.701657458563536) internal successors, (1848), 1092 states have internal predecessors, (1848), 0 states have call successors, (0), 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 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 18:07:09,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:09,365 INFO L93 Difference]: Finished difference Result 1882 states and 3157 transitions. [2022-01-10 18:07:09,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:07:09,367 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-10 18:07:09,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:09,385 INFO L225 Difference]: With dead ends: 1882 [2022-01-10 18:07:09,385 INFO L226 Difference]: Without dead ends: 937 [2022-01-10 18:07:09,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:07:09,395 INFO L933 BasicCegarLoop]: 1834 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:09,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:09,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-01-10 18:07:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2022-01-10 18:07:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 931 states have (on average 1.7089151450053706) internal successors, (1591), 936 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states 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 18:07:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1591 transitions. [2022-01-10 18:07:09,477 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1591 transitions. Word has length 57 [2022-01-10 18:07:09,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:09,477 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1591 transitions. [2022-01-10 18:07:09,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 18:07:09,479 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1591 transitions. [2022-01-10 18:07:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 18:07:09,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:09,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:09,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:07:09,482 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:09,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:09,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1044082156, now seen corresponding path program 1 times [2022-01-10 18:07:09,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:09,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872299022] [2022-01-10 18:07:09,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:09,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:09,696 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 18:07:09,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:09,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872299022] [2022-01-10 18:07:09,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872299022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:09,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:09,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:09,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317158376] [2022-01-10 18:07:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:09,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:09,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:09,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:09,699 INFO L87 Difference]: Start difference. First operand 937 states and 1591 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 18:07:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:09,837 INFO L93 Difference]: Finished difference Result 1855 states and 3154 transitions. [2022-01-10 18:07:09,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:09,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-01-10 18:07:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:09,841 INFO L225 Difference]: With dead ends: 1855 [2022-01-10 18:07:09,842 INFO L226 Difference]: Without dead ends: 937 [2022-01-10 18:07:09,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:07:09,846 INFO L933 BasicCegarLoop]: 1571 mSDtfsCounter, 1566 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:09,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1566 Valid, 1584 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:09,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-01-10 18:07:09,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2022-01-10 18:07:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 931 states have (on average 1.7067669172932332) internal successors, (1589), 936 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states 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 18:07:09,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1589 transitions. [2022-01-10 18:07:09,887 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1589 transitions. Word has length 58 [2022-01-10 18:07:09,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:09,888 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1589 transitions. [2022-01-10 18:07:09,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 18:07:09,891 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1589 transitions. [2022-01-10 18:07:09,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:07:09,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:09,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:09,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:07:09,898 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:09,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:09,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1796427988, now seen corresponding path program 1 times [2022-01-10 18:07:09,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:09,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506631940] [2022-01-10 18:07:09,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:09,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:10,069 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 18:07:10,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:10,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506631940] [2022-01-10 18:07:10,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506631940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:10,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:10,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:10,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223674722] [2022-01-10 18:07:10,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:10,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:10,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:10,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:10,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:10,071 INFO L87 Difference]: Start difference. First operand 937 states and 1589 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 18:07:10,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:10,434 INFO L93 Difference]: Finished difference Result 4553 states and 7741 transitions. [2022-01-10 18:07:10,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:07:10,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-10 18:07:10,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:10,451 INFO L225 Difference]: With dead ends: 4553 [2022-01-10 18:07:10,451 INFO L226 Difference]: Without dead ends: 3640 [2022-01-10 18:07:10,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:07:10,455 INFO L933 BasicCegarLoop]: 3101 mSDtfsCounter, 7728 mSDsluCounter, 4639 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7728 SdHoareTripleChecker+Valid, 7740 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:10,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7728 Valid, 7740 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-01-10 18:07:10,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 937. [2022-01-10 18:07:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 931 states have (on average 1.7056928034371643) internal successors, (1588), 936 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states 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 18:07:10,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1588 transitions. [2022-01-10 18:07:10,520 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1588 transitions. Word has length 60 [2022-01-10 18:07:10,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:10,520 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1588 transitions. [2022-01-10 18:07:10,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 18:07:10,521 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1588 transitions. [2022-01-10 18:07:10,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:07:10,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:10,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:10,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:07:10,523 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:10,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash -722723398, now seen corresponding path program 1 times [2022-01-10 18:07:10,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:10,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161995276] [2022-01-10 18:07:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:10,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:10,640 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 18:07:10,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:10,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161995276] [2022-01-10 18:07:10,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161995276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:10,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:10,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:10,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475242260] [2022-01-10 18:07:10,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:10,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:10,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:10,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:10,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:10,642 INFO L87 Difference]: Start difference. First operand 937 states and 1588 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 18:07:10,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:10,723 INFO L93 Difference]: Finished difference Result 1859 states and 3154 transitions. [2022-01-10 18:07:10,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:10,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-10 18:07:10,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:10,728 INFO L225 Difference]: With dead ends: 1859 [2022-01-10 18:07:10,728 INFO L226 Difference]: Without dead ends: 951 [2022-01-10 18:07:10,729 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 18:07:10,735 INFO L933 BasicCegarLoop]: 1602 mSDtfsCounter, 1567 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:10,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1567 Valid, 1624 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:10,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2022-01-10 18:07:10,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 937. [2022-01-10 18:07:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 931 states have (on average 1.7046186895810955) internal successors, (1587), 936 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states 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 18:07:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1587 transitions. [2022-01-10 18:07:10,780 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1587 transitions. Word has length 61 [2022-01-10 18:07:10,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:10,781 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1587 transitions. [2022-01-10 18:07:10,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 18:07:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1587 transitions. [2022-01-10 18:07:10,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 18:07:10,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:10,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:10,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:07:10,782 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:10,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1344222869, now seen corresponding path program 1 times [2022-01-10 18:07:10,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:10,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096992863] [2022-01-10 18:07:10,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:10,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:10,911 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 18:07:10,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:10,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096992863] [2022-01-10 18:07:10,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096992863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:10,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:10,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:10,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911069807] [2022-01-10 18:07:10,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:10,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:10,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:10,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:10,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:10,913 INFO L87 Difference]: Start difference. First operand 937 states and 1587 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 18:07:11,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:11,142 INFO L93 Difference]: Finished difference Result 2745 states and 4661 transitions. [2022-01-10 18:07:11,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:07:11,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 18:07:11,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:11,149 INFO L225 Difference]: With dead ends: 2745 [2022-01-10 18:07:11,149 INFO L226 Difference]: Without dead ends: 1842 [2022-01-10 18:07:11,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:07:11,155 INFO L933 BasicCegarLoop]: 1596 mSDtfsCounter, 7651 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7651 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:11,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7651 Valid, 3206 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:11,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2022-01-10 18:07:11,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 937. [2022-01-10 18:07:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 931 states have (on average 1.7024704618689581) internal successors, (1585), 936 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states 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 18:07:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1585 transitions. [2022-01-10 18:07:11,211 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1585 transitions. Word has length 62 [2022-01-10 18:07:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:11,212 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1585 transitions. [2022-01-10 18:07:11,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 18:07:11,213 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1585 transitions. [2022-01-10 18:07:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:07:11,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:11,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:11,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:07:11,214 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:11,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1534190994, now seen corresponding path program 1 times [2022-01-10 18:07:11,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:11,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088981901] [2022-01-10 18:07:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:11,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:11,328 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 18:07:11,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:11,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088981901] [2022-01-10 18:07:11,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088981901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:11,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:11,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:07:11,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072238101] [2022-01-10 18:07:11,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:11,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:07:11,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:11,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:07:11,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:07:11,330 INFO L87 Difference]: Start difference. First operand 937 states and 1585 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:12,062 INFO L93 Difference]: Finished difference Result 7092 states and 11818 transitions. [2022-01-10 18:07:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:07:12,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 18:07:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:12,086 INFO L225 Difference]: With dead ends: 7092 [2022-01-10 18:07:12,086 INFO L226 Difference]: Without dead ends: 6472 [2022-01-10 18:07:12,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:07:12,092 INFO L933 BasicCegarLoop]: 2924 mSDtfsCounter, 12345 mSDsluCounter, 10437 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12345 SdHoareTripleChecker+Valid, 13361 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:12,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12345 Valid, 13361 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 18:07:12,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6472 states. [2022-01-10 18:07:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6472 to 1618. [2022-01-10 18:07:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1612 states have (on average 1.7053349875930521) internal successors, (2749), 1617 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states 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 18:07:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2749 transitions. [2022-01-10 18:07:12,203 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2749 transitions. Word has length 64 [2022-01-10 18:07:12,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:12,204 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 2749 transitions. [2022-01-10 18:07:12,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:12,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2749 transitions. [2022-01-10 18:07:12,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:07:12,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:12,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:12,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:07:12,207 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:12,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:12,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1029297494, now seen corresponding path program 1 times [2022-01-10 18:07:12,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:12,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906066955] [2022-01-10 18:07:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:12,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:12,324 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 18:07:12,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:12,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906066955] [2022-01-10 18:07:12,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906066955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:12,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:12,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:12,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635871618] [2022-01-10 18:07:12,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:12,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:12,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:12,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:12,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:12,326 INFO L87 Difference]: Start difference. First operand 1618 states and 2749 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:12,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:12,568 INFO L93 Difference]: Finished difference Result 3392 states and 5667 transitions. [2022-01-10 18:07:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:07:12,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:07:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:12,575 INFO L225 Difference]: With dead ends: 3392 [2022-01-10 18:07:12,576 INFO L226 Difference]: Without dead ends: 2380 [2022-01-10 18:07:12,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:07:12,578 INFO L933 BasicCegarLoop]: 1567 mSDtfsCounter, 5189 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5189 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:12,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5189 Valid, 3402 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:12,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2022-01-10 18:07:12,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1618. [2022-01-10 18:07:12,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1612 states have (on average 1.7028535980148884) internal successors, (2745), 1617 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states 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 18:07:12,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2745 transitions. [2022-01-10 18:07:12,677 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2745 transitions. Word has length 65 [2022-01-10 18:07:12,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:12,678 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 2745 transitions. [2022-01-10 18:07:12,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:12,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2745 transitions. [2022-01-10 18:07:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:07:12,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:12,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:12,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:07:12,680 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:12,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:12,681 INFO L85 PathProgramCache]: Analyzing trace with hash -241458880, now seen corresponding path program 1 times [2022-01-10 18:07:12,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:12,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650219568] [2022-01-10 18:07:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:12,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:12,751 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 18:07:12,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:12,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650219568] [2022-01-10 18:07:12,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650219568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:12,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:12,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:12,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053040699] [2022-01-10 18:07:12,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:12,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:12,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:12,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:12,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:12,753 INFO L87 Difference]: Start difference. First operand 1618 states and 2745 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:13,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:13,051 INFO L93 Difference]: Finished difference Result 4731 states and 8064 transitions. [2022-01-10 18:07:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:07:13,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 18:07:13,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:13,063 INFO L225 Difference]: With dead ends: 4731 [2022-01-10 18:07:13,063 INFO L226 Difference]: Without dead ends: 3150 [2022-01-10 18:07:13,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:07:13,067 INFO L933 BasicCegarLoop]: 3069 mSDtfsCounter, 4686 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 4605 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:13,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4686 Valid, 4605 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:13,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2022-01-10 18:07:13,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 1618. [2022-01-10 18:07:13,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1612 states have (on average 1.7016129032258065) internal successors, (2743), 1617 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states 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 18:07:13,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2743 transitions. [2022-01-10 18:07:13,199 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2743 transitions. Word has length 65 [2022-01-10 18:07:13,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:13,199 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 2743 transitions. [2022-01-10 18:07:13,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:13,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2743 transitions. [2022-01-10 18:07:13,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 18:07:13,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:13,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:13,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:07:13,207 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:13,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:13,207 INFO L85 PathProgramCache]: Analyzing trace with hash 784678655, now seen corresponding path program 1 times [2022-01-10 18:07:13,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:13,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385727763] [2022-01-10 18:07:13,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:13,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:13,325 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 18:07:13,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:13,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385727763] [2022-01-10 18:07:13,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385727763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:13,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:13,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:13,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312796901] [2022-01-10 18:07:13,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:13,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:07:13,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:13,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:07:13,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:07:13,333 INFO L87 Difference]: Start difference. First operand 1618 states and 2743 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:14,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:14,651 INFO L93 Difference]: Finished difference Result 7330 states and 12157 transitions. [2022-01-10 18:07:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:07:14,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 18:07:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:14,674 INFO L225 Difference]: With dead ends: 7330 [2022-01-10 18:07:14,674 INFO L226 Difference]: Without dead ends: 6434 [2022-01-10 18:07:14,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:07:14,678 INFO L933 BasicCegarLoop]: 2316 mSDtfsCounter, 13459 mSDsluCounter, 12073 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13459 SdHoareTripleChecker+Valid, 14389 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:14,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13459 Valid, 14389 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 18:07:14,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6434 states. [2022-01-10 18:07:14,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6434 to 3117. [2022-01-10 18:07:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3117 states, 3111 states have (on average 1.7081324333011894) internal successors, (5314), 3116 states have internal predecessors, (5314), 0 states have call successors, (0), 0 states 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 18:07:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 5314 transitions. [2022-01-10 18:07:14,902 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 5314 transitions. Word has length 66 [2022-01-10 18:07:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:14,902 INFO L470 AbstractCegarLoop]: Abstraction has 3117 states and 5314 transitions. [2022-01-10 18:07:14,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 5314 transitions. [2022-01-10 18:07:14,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:07:14,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:14,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:14,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:07:14,905 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:14,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:14,906 INFO L85 PathProgramCache]: Analyzing trace with hash 878481109, now seen corresponding path program 1 times [2022-01-10 18:07:14,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:14,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089335021] [2022-01-10 18:07:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:14,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:15,056 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 18:07:15,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:15,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089335021] [2022-01-10 18:07:15,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089335021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:15,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:15,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:15,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893217106] [2022-01-10 18:07:15,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:15,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:07:15,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:15,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:07:15,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:07:15,084 INFO L87 Difference]: Start difference. First operand 3117 states and 5314 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:16,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:16,797 INFO L93 Difference]: Finished difference Result 13092 states and 21779 transitions. [2022-01-10 18:07:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 18:07:16,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:07:16,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:16,823 INFO L225 Difference]: With dead ends: 13092 [2022-01-10 18:07:16,823 INFO L226 Difference]: Without dead ends: 11369 [2022-01-10 18:07:16,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:07:16,829 INFO L933 BasicCegarLoop]: 2180 mSDtfsCounter, 13443 mSDsluCounter, 11368 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13443 SdHoareTripleChecker+Valid, 13548 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:16,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13443 Valid, 13548 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 18:07:16,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11369 states. [2022-01-10 18:07:17,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11369 to 6131. [2022-01-10 18:07:17,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6131 states, 6125 states have (on average 1.7111836734693877) internal successors, (10481), 6130 states have internal predecessors, (10481), 0 states have call successors, (0), 0 states 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 18:07:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6131 states to 6131 states and 10481 transitions. [2022-01-10 18:07:17,308 INFO L78 Accepts]: Start accepts. Automaton has 6131 states and 10481 transitions. Word has length 67 [2022-01-10 18:07:17,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:17,309 INFO L470 AbstractCegarLoop]: Abstraction has 6131 states and 10481 transitions. [2022-01-10 18:07:17,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:17,310 INFO L276 IsEmpty]: Start isEmpty. Operand 6131 states and 10481 transitions. [2022-01-10 18:07:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:07:17,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:17,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:17,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:07:17,314 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:17,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1908934378, now seen corresponding path program 1 times [2022-01-10 18:07:17,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:17,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123161812] [2022-01-10 18:07:17,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:17,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:17,438 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 18:07:17,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:17,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123161812] [2022-01-10 18:07:17,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123161812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:17,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:17,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:17,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128413295] [2022-01-10 18:07:17,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:17,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:17,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:17,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:17,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:17,440 INFO L87 Difference]: Start difference. First operand 6131 states and 10481 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:19,711 INFO L93 Difference]: Finished difference Result 28131 states and 46649 transitions. [2022-01-10 18:07:19,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:07:19,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 18:07:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:19,771 INFO L225 Difference]: With dead ends: 28131 [2022-01-10 18:07:19,772 INFO L226 Difference]: Without dead ends: 25058 [2022-01-10 18:07:19,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:07:19,784 INFO L933 BasicCegarLoop]: 1569 mSDtfsCounter, 8233 mSDsluCounter, 5248 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8233 SdHoareTripleChecker+Valid, 6817 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:19,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8233 Valid, 6817 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:07:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25058 states. [2022-01-10 18:07:20,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25058 to 10076. [2022-01-10 18:07:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10076 states, 10070 states have (on average 1.6865938430983118) internal successors, (16984), 10075 states have internal predecessors, (16984), 0 states have call successors, (0), 0 states 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 18:07:20,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10076 states to 10076 states and 16984 transitions. [2022-01-10 18:07:20,822 INFO L78 Accepts]: Start accepts. Automaton has 10076 states and 16984 transitions. Word has length 67 [2022-01-10 18:07:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:20,822 INFO L470 AbstractCegarLoop]: Abstraction has 10076 states and 16984 transitions. [2022-01-10 18:07:20,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 10076 states and 16984 transitions. [2022-01-10 18:07:20,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:07:20,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:20,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:20,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:07:20,827 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:20,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:20,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1033705176, now seen corresponding path program 1 times [2022-01-10 18:07:20,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:20,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262184650] [2022-01-10 18:07:20,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:20,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:20,940 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 18:07:20,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:20,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262184650] [2022-01-10 18:07:20,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262184650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:20,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:20,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:07:20,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855874001] [2022-01-10 18:07:20,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:20,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:07:20,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:20,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:07:20,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:07:20,941 INFO L87 Difference]: Start difference. First operand 10076 states and 16984 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 18:07:22,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:22,548 INFO L93 Difference]: Finished difference Result 20128 states and 33445 transitions. [2022-01-10 18:07:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 18:07:22,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 18:07:22,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:22,571 INFO L225 Difference]: With dead ends: 20128 [2022-01-10 18:07:22,571 INFO L226 Difference]: Without dead ends: 13914 [2022-01-10 18:07:22,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2022-01-10 18:07:22,580 INFO L933 BasicCegarLoop]: 1574 mSDtfsCounter, 7884 mSDsluCounter, 6170 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7884 SdHoareTripleChecker+Valid, 7744 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:22,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7884 Valid, 7744 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:22,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13914 states. [2022-01-10 18:07:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13914 to 9908. [2022-01-10 18:07:23,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9908 states, 9902 states have (on average 1.6812765097960007) internal successors, (16648), 9907 states have internal predecessors, (16648), 0 states have call successors, (0), 0 states 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 18:07:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9908 states to 9908 states and 16648 transitions. [2022-01-10 18:07:23,679 INFO L78 Accepts]: Start accepts. Automaton has 9908 states and 16648 transitions. Word has length 68 [2022-01-10 18:07:23,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:23,679 INFO L470 AbstractCegarLoop]: Abstraction has 9908 states and 16648 transitions. [2022-01-10 18:07:23,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 18:07:23,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9908 states and 16648 transitions. [2022-01-10 18:07:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:07:23,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:23,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:23,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:07:23,685 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:23,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:23,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1476595436, now seen corresponding path program 1 times [2022-01-10 18:07:23,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:23,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505767899] [2022-01-10 18:07:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:23,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:23,847 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 18:07:23,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:23,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505767899] [2022-01-10 18:07:23,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505767899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:23,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:23,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:23,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349136826] [2022-01-10 18:07:23,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:23,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:07:23,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:23,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:07:23,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:07:23,848 INFO L87 Difference]: Start difference. First operand 9908 states and 16648 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:31,904 INFO L93 Difference]: Finished difference Result 71763 states and 118392 transitions. [2022-01-10 18:07:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 18:07:31,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 18:07:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:32,029 INFO L225 Difference]: With dead ends: 71763 [2022-01-10 18:07:32,029 INFO L226 Difference]: Without dead ends: 70317 [2022-01-10 18:07:32,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-10 18:07:32,051 INFO L933 BasicCegarLoop]: 4847 mSDtfsCounter, 11305 mSDsluCounter, 19643 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11305 SdHoareTripleChecker+Valid, 24490 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:32,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11305 Valid, 24490 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 18:07:32,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70317 states. [2022-01-10 18:07:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70317 to 14528. [2022-01-10 18:07:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14528 states, 14522 states have (on average 1.6718082908690264) internal successors, (24278), 14527 states have internal predecessors, (24278), 0 states have call successors, (0), 0 states 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 18:07:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14528 states to 14528 states and 24278 transitions. [2022-01-10 18:07:34,328 INFO L78 Accepts]: Start accepts. Automaton has 14528 states and 24278 transitions. Word has length 69 [2022-01-10 18:07:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:34,328 INFO L470 AbstractCegarLoop]: Abstraction has 14528 states and 24278 transitions. [2022-01-10 18:07:34,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 14528 states and 24278 transitions. [2022-01-10 18:07:34,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:07:34,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:34,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:34,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:07:34,334 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:34,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:34,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1471130366, now seen corresponding path program 1 times [2022-01-10 18:07:34,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:34,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789883537] [2022-01-10 18:07:34,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:34,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:34,427 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 18:07:34,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:34,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789883537] [2022-01-10 18:07:34,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789883537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:34,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:34,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:34,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499716530] [2022-01-10 18:07:34,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:34,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:07:34,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:34,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:07:34,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:07:34,429 INFO L87 Difference]: Start difference. First operand 14528 states and 24278 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:41,483 INFO L93 Difference]: Finished difference Result 55121 states and 91217 transitions. [2022-01-10 18:07:41,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 18:07:41,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 18:07:41,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:41,564 INFO L225 Difference]: With dead ends: 55121 [2022-01-10 18:07:41,564 INFO L226 Difference]: Without dead ends: 49378 [2022-01-10 18:07:41,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2022-01-10 18:07:41,578 INFO L933 BasicCegarLoop]: 1656 mSDtfsCounter, 14025 mSDsluCounter, 8801 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14025 SdHoareTripleChecker+Valid, 10457 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:41,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14025 Valid, 10457 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:07:41,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49378 states. [2022-01-10 18:07:44,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49378 to 20011. [2022-01-10 18:07:44,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20011 states, 20005 states have (on average 1.6713321669582604) internal successors, (33435), 20010 states have internal predecessors, (33435), 0 states have call successors, (0), 0 states 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 18:07:44,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20011 states to 20011 states and 33435 transitions. [2022-01-10 18:07:44,095 INFO L78 Accepts]: Start accepts. Automaton has 20011 states and 33435 transitions. Word has length 70 [2022-01-10 18:07:44,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:44,096 INFO L470 AbstractCegarLoop]: Abstraction has 20011 states and 33435 transitions. [2022-01-10 18:07:44,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:44,096 INFO L276 IsEmpty]: Start isEmpty. Operand 20011 states and 33435 transitions. [2022-01-10 18:07:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:07:44,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:44,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:44,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:07:44,103 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:44,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:44,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1638292792, now seen corresponding path program 1 times [2022-01-10 18:07:44,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:44,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023691629] [2022-01-10 18:07:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:44,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:44,236 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 18:07:44,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:44,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023691629] [2022-01-10 18:07:44,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023691629] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:44,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:44,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:44,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2233584] [2022-01-10 18:07:44,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:44,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:07:44,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:44,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:07:44,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:07:44,238 INFO L87 Difference]: Start difference. First operand 20011 states and 33435 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 18:07:51,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:51,548 INFO L93 Difference]: Finished difference Result 56439 states and 93317 transitions. [2022-01-10 18:07:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 18:07:51,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 18:07:51,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:51,613 INFO L225 Difference]: With dead ends: 56439 [2022-01-10 18:07:51,613 INFO L226 Difference]: Without dead ends: 45540 [2022-01-10 18:07:51,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2022-01-10 18:07:51,635 INFO L933 BasicCegarLoop]: 1680 mSDtfsCounter, 13912 mSDsluCounter, 8801 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13912 SdHoareTripleChecker+Valid, 10481 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:51,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13912 Valid, 10481 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:07:51,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45540 states. [2022-01-10 18:07:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45540 to 18513. [2022-01-10 18:07:54,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18513 states, 18507 states have (on average 1.6722861619927596) internal successors, (30949), 18512 states have internal predecessors, (30949), 0 states have call successors, (0), 0 states 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 18:07:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18513 states to 18513 states and 30949 transitions. [2022-01-10 18:07:54,165 INFO L78 Accepts]: Start accepts. Automaton has 18513 states and 30949 transitions. Word has length 71 [2022-01-10 18:07:54,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:54,165 INFO L470 AbstractCegarLoop]: Abstraction has 18513 states and 30949 transitions. [2022-01-10 18:07:54,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 18:07:54,165 INFO L276 IsEmpty]: Start isEmpty. Operand 18513 states and 30949 transitions. [2022-01-10 18:07:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:07:54,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:54,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:54,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:07:54,172 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:07:54,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:54,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1515448095, now seen corresponding path program 1 times [2022-01-10 18:07:54,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:54,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292212969] [2022-01-10 18:07:54,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:54,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:54,237 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 18:07:54,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:54,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292212969] [2022-01-10 18:07:54,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292212969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:54,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:54,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:07:54,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148559130] [2022-01-10 18:07:54,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:54,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:54,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:54,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:54,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:54,239 INFO L87 Difference]: Start difference. First operand 18513 states and 30949 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 18:07:59,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:59,138 INFO L93 Difference]: Finished difference Result 43580 states and 72139 transitions. [2022-01-10 18:07:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 18:07:59,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 18:07:59,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:59,181 INFO L225 Difference]: With dead ends: 43580 [2022-01-10 18:07:59,181 INFO L226 Difference]: Without dead ends: 34723 [2022-01-10 18:07:59,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:07:59,193 INFO L933 BasicCegarLoop]: 2169 mSDtfsCounter, 4577 mSDsluCounter, 4906 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4577 SdHoareTripleChecker+Valid, 7075 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:59,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4577 Valid, 7075 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:59,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34723 states. [2022-01-10 18:08:01,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34723 to 18641. [2022-01-10 18:08:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18641 states, 18635 states have (on average 1.669170914944996) internal successors, (31105), 18640 states have internal predecessors, (31105), 0 states have call successors, (0), 0 states 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 18:08:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18641 states to 18641 states and 31105 transitions. [2022-01-10 18:08:01,585 INFO L78 Accepts]: Start accepts. Automaton has 18641 states and 31105 transitions. Word has length 71 [2022-01-10 18:08:01,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:01,585 INFO L470 AbstractCegarLoop]: Abstraction has 18641 states and 31105 transitions. [2022-01-10 18:08:01,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 18:08:01,586 INFO L276 IsEmpty]: Start isEmpty. Operand 18641 states and 31105 transitions. [2022-01-10 18:08:01,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 18:08:01,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:01,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:01,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:08:01,591 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:08:01,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:01,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1309343523, now seen corresponding path program 1 times [2022-01-10 18:08:01,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:01,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015773550] [2022-01-10 18:08:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:01,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:01,660 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 18:08:01,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:01,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015773550] [2022-01-10 18:08:01,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015773550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:01,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:01,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:08:01,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987083626] [2022-01-10 18:08:01,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:01,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:08:01,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:01,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:08:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:08:01,662 INFO L87 Difference]: Start difference. First operand 18641 states and 31105 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 18:08:05,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:08:05,480 INFO L93 Difference]: Finished difference Result 38889 states and 64528 transitions. [2022-01-10 18:08:05,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:08:05,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 18:08:05,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:08:05,513 INFO L225 Difference]: With dead ends: 38889 [2022-01-10 18:08:05,514 INFO L226 Difference]: Without dead ends: 26517 [2022-01-10 18:08:05,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:08:05,526 INFO L933 BasicCegarLoop]: 2343 mSDtfsCounter, 2691 mSDsluCounter, 3691 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2691 SdHoareTripleChecker+Valid, 6034 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:08:05,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2691 Valid, 6034 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:08:05,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26517 states. [2022-01-10 18:08:07,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26517 to 13685. [2022-01-10 18:08:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13685 states, 13679 states have (on average 1.672125155347613) internal successors, (22873), 13684 states have internal predecessors, (22873), 0 states have call successors, (0), 0 states 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 18:08:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13685 states to 13685 states and 22873 transitions. [2022-01-10 18:08:07,411 INFO L78 Accepts]: Start accepts. Automaton has 13685 states and 22873 transitions. Word has length 71 [2022-01-10 18:08:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:08:07,411 INFO L470 AbstractCegarLoop]: Abstraction has 13685 states and 22873 transitions. [2022-01-10 18:08:07,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 18:08:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 13685 states and 22873 transitions. [2022-01-10 18:08:07,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 18:08:07,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:08:07,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:08:07,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:08:07,416 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 18:08:07,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:08:07,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1577526460, now seen corresponding path program 1 times [2022-01-10 18:08:07,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:08:07,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531754969] [2022-01-10 18:08:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:08:07,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:08:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:08:07,511 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 18:08:07,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:08:07,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531754969] [2022-01-10 18:08:07,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531754969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:08:07,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:08:07,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 18:08:07,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162732539] [2022-01-10 18:08:07,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:08:07,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 18:08:07,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:08:07,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 18:08:07,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:08:07,512 INFO L87 Difference]: Start difference. First operand 13685 states and 22873 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)