/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_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:25:35,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:25:35,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:25:35,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:25:35,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:25:35,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:25:35,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:25:35,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:25:35,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:25:35,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:25:35,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:25:35,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:25:35,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:25:35,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:25:35,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:25:35,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:25:35,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:25:35,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:25:35,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:25:35,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:25:35,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:25:35,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:25:35,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:25:35,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:25:35,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:25:35,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:25:35,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:25:35,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:25:35,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:25:35,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:25:35,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:25:35,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:25:35,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:25:35,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:25:35,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:25:35,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:25:35,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:25:35,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:25:35,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:25:35,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:25:35,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:25:35,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:25:35,752 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:25:35,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:25:35,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:25:35,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:25:35,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:25:35,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:25:35,753 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:25:35,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:25:35,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:25:35,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:25:35,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:25:35,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:25:35,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:25:35,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:25:35,754 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:25:35,754 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:25:35,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:25:35,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:25:35,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:25:35,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:25:35,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:25:35,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:25:35,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:25:35,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:25:35,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:25:35,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:25:35,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:25:35,755 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:25:35,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:25:35,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:25:35,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:25:35,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:25:35,756 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:25:35,757 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:25:35,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:25:35,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:25:35,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:25:35,922 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:25:35,923 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:25:35,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product58.cil.c [2022-01-10 12:25:35,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c34a017f/d072f4aad1d643fb94ff0beeebc01dcc/FLAG95910f748 [2022-01-10 12:25:36,296 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:25:36,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product58.cil.c [2022-01-10 12:25:36,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c34a017f/d072f4aad1d643fb94ff0beeebc01dcc/FLAG95910f748 [2022-01-10 12:25:36,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c34a017f/d072f4aad1d643fb94ff0beeebc01dcc [2022-01-10 12:25:36,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:25:36,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:25:36,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:25:36,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:25:36,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:25:36,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:25:36" (1/1) ... [2022-01-10 12:25:36,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e7219f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:36, skipping insertion in model container [2022-01-10 12:25:36,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:25:36" (1/1) ... [2022-01-10 12:25:36,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:25:36,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:25:36,935 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/minepump_spec3_product58.cil.c[13037,13050] [2022-01-10 12:25:36,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:25:36,999 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:25:37,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:25:37,041 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/minepump_spec3_product58.cil.c[13037,13050] [2022-01-10 12:25:37,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:25:37,060 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:25:37,089 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/minepump_spec3_product58.cil.c[13037,13050] [2022-01-10 12:25:37,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:25:37,120 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:25:37,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:37 WrapperNode [2022-01-10 12:25:37,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:25:37,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:25:37,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:25:37,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:25:37,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:37" (1/1) ... [2022-01-10 12:25:37,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:37" (1/1) ... [2022-01-10 12:25:37,166 INFO L137 Inliner]: procedures = 59, calls = 158, calls flagged for inlining = 55, calls inlined = 99, statements flattened = 761 [2022-01-10 12:25:37,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:25:37,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:25:37,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:25:37,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:25:37,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:37" (1/1) ... [2022-01-10 12:25:37,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:37" (1/1) ... [2022-01-10 12:25:37,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:37" (1/1) ... [2022-01-10 12:25:37,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:37" (1/1) ... [2022-01-10 12:25:37,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:37" (1/1) ... [2022-01-10 12:25:37,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:37" (1/1) ... [2022-01-10 12:25:37,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:37" (1/1) ... [2022-01-10 12:25:37,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:25:37,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:25:37,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:25:37,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:25:37,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:37" (1/1) ... [2022-01-10 12:25:37,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:25:37,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:25:37,226 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 12:25:37,234 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 12:25:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:25:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:25:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:25:37,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:25:37,320 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:25:37,322 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:25:37,748 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:25:37,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:25:37,767 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 12:25:37,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:25:37 BoogieIcfgContainer [2022-01-10 12:25:37,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:25:37,769 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:25:37,769 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:25:37,770 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:25:37,774 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:25:37" (1/1) ... [2022-01-10 12:25:37,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:25:37 BasicIcfg [2022-01-10 12:25:37,882 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:25:37,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:25:37,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:25:37,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:25:37,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:25:36" (1/4) ... [2022-01-10 12:25:37,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f2d6eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:25:37, skipping insertion in model container [2022-01-10 12:25:37,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:37" (2/4) ... [2022-01-10 12:25:37,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f2d6eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:25:37, skipping insertion in model container [2022-01-10 12:25:37,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:25:37" (3/4) ... [2022-01-10 12:25:37,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f2d6eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:25:37, skipping insertion in model container [2022-01-10 12:25:37,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:25:37" (4/4) ... [2022-01-10 12:25:37,888 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product58.cil.cTransformedIcfg [2022-01-10 12:25:37,891 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:25:37,891 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 12:25:37,943 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:25:37,950 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 12:25:37,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 12:25:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 196 states, 192 states have (on average 1.3802083333333333) internal successors, (265), 195 states have internal predecessors, (265), 0 states have call successors, (0), 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 12:25:37,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 12:25:37,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:37,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:37,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:37,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:37,986 INFO L85 PathProgramCache]: Analyzing trace with hash -842847406, now seen corresponding path program 1 times [2022-01-10 12:25:37,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:37,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520275533] [2022-01-10 12:25:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:37,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:38,223 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 12:25:38,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:38,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520275533] [2022-01-10 12:25:38,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520275533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:38,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:38,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:25:38,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54252805] [2022-01-10 12:25:38,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:38,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:25:38,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:38,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:25:38,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:25:38,257 INFO L87 Difference]: Start difference. First operand has 196 states, 192 states have (on average 1.3802083333333333) internal successors, (265), 195 states have internal predecessors, (265), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 12:25:38,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:38,287 INFO L93 Difference]: Finished difference Result 382 states and 519 transitions. [2022-01-10 12:25:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:25:38,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-01-10 12:25:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:38,295 INFO L225 Difference]: With dead ends: 382 [2022-01-10 12:25:38,295 INFO L226 Difference]: Without dead ends: 186 [2022-01-10 12:25:38,298 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 12:25:38,300 INFO L933 BasicCegarLoop]: 255 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, 255 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 12:25:38,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:38,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-01-10 12:25:38,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-01-10 12:25:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 183 states have (on average 1.349726775956284) internal successors, (247), 185 states have internal predecessors, (247), 0 states have call successors, (0), 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 12:25:38,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 247 transitions. [2022-01-10 12:25:38,331 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 247 transitions. Word has length 19 [2022-01-10 12:25:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:38,331 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 247 transitions. [2022-01-10 12:25:38,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 12:25:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 247 transitions. [2022-01-10 12:25:38,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 12:25:38,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:38,332 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] [2022-01-10 12:25:38,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:25:38,333 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:38,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:38,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1187445296, now seen corresponding path program 1 times [2022-01-10 12:25:38,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:38,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196595460] [2022-01-10 12:25:38,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:38,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:38,431 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 12:25:38,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:38,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196595460] [2022-01-10 12:25:38,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196595460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:38,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:38,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:25:38,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432383340] [2022-01-10 12:25:38,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:38,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:25:38,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:38,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:25:38,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:25:38,434 INFO L87 Difference]: Start difference. First operand 186 states and 247 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 12:25:38,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:38,504 INFO L93 Difference]: Finished difference Result 365 states and 487 transitions. [2022-01-10 12:25:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:25:38,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-01-10 12:25:38,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:38,505 INFO L225 Difference]: With dead ends: 365 [2022-01-10 12:25:38,505 INFO L226 Difference]: Without dead ends: 186 [2022-01-10 12:25:38,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:25:38,508 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 232 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:38,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 241 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-01-10 12:25:38,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-01-10 12:25:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 183 states have (on average 1.3333333333333333) internal successors, (244), 185 states have internal predecessors, (244), 0 states have call successors, (0), 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 12:25:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 244 transitions. [2022-01-10 12:25:38,523 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 244 transitions. Word has length 20 [2022-01-10 12:25:38,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:38,524 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 244 transitions. [2022-01-10 12:25:38,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 12:25:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 244 transitions. [2022-01-10 12:25:38,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 12:25:38,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:38,532 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] [2022-01-10 12:25:38,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:25:38,532 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:38,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:38,533 INFO L85 PathProgramCache]: Analyzing trace with hash -681260534, now seen corresponding path program 1 times [2022-01-10 12:25:38,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:38,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405133096] [2022-01-10 12:25:38,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:38,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:38,589 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 12:25:38,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:38,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405133096] [2022-01-10 12:25:38,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405133096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:38,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:38,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:25:38,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733086539] [2022-01-10 12:25:38,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:38,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:25:38,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:38,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:25:38,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:25:38,591 INFO L87 Difference]: Start difference. First operand 186 states and 244 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 12:25:38,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:38,674 INFO L93 Difference]: Finished difference Result 439 states and 574 transitions. [2022-01-10 12:25:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:25:38,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-01-10 12:25:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:38,676 INFO L225 Difference]: With dead ends: 439 [2022-01-10 12:25:38,676 INFO L226 Difference]: Without dead ends: 260 [2022-01-10 12:25:38,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:25:38,678 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 168 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:38,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 346 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:38,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-01-10 12:25:38,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 254. [2022-01-10 12:25:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 251 states have (on average 1.294820717131474) internal successors, (325), 253 states have internal predecessors, (325), 0 states have call successors, (0), 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 12:25:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 325 transitions. [2022-01-10 12:25:38,706 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 325 transitions. Word has length 25 [2022-01-10 12:25:38,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:38,706 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 325 transitions. [2022-01-10 12:25:38,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 12:25:38,706 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 325 transitions. [2022-01-10 12:25:38,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 12:25:38,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:38,707 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] [2022-01-10 12:25:38,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:25:38,707 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:38,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:38,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1532946951, now seen corresponding path program 1 times [2022-01-10 12:25:38,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:38,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510972592] [2022-01-10 12:25:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:38,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:38,806 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 12:25:38,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:38,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510972592] [2022-01-10 12:25:38,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510972592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:38,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:38,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:25:38,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900864525] [2022-01-10 12:25:38,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:38,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:38,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:38,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:38,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:38,808 INFO L87 Difference]: Start difference. First operand 254 states and 325 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 12:25:39,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:39,092 INFO L93 Difference]: Finished difference Result 1434 states and 1846 transitions. [2022-01-10 12:25:39,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:25:39,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2022-01-10 12:25:39,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:39,097 INFO L225 Difference]: With dead ends: 1434 [2022-01-10 12:25:39,097 INFO L226 Difference]: Without dead ends: 803 [2022-01-10 12:25:39,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 12:25:39,101 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 1111 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:39,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1111 Valid, 1404 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:25:39,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-01-10 12:25:39,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 345. [2022-01-10 12:25:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 342 states have (on average 1.286549707602339) internal successors, (440), 344 states have internal predecessors, (440), 0 states have call successors, (0), 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 12:25:39,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 440 transitions. [2022-01-10 12:25:39,123 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 440 transitions. Word has length 31 [2022-01-10 12:25:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:39,123 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 440 transitions. [2022-01-10 12:25:39,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 12:25:39,123 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 440 transitions. [2022-01-10 12:25:39,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 12:25:39,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:39,124 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] [2022-01-10 12:25:39,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:25:39,124 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:39,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:39,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1112174814, now seen corresponding path program 1 times [2022-01-10 12:25:39,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:39,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978317759] [2022-01-10 12:25:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:39,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:39,222 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 12:25:39,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:39,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978317759] [2022-01-10 12:25:39,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978317759] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:39,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:39,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:25:39,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566933397] [2022-01-10 12:25:39,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:39,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:25:39,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:39,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:25:39,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:25:39,224 INFO L87 Difference]: Start difference. First operand 345 states and 440 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 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 12:25:39,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:39,377 INFO L93 Difference]: Finished difference Result 959 states and 1222 transitions. [2022-01-10 12:25:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:25:39,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-10 12:25:39,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:39,379 INFO L225 Difference]: With dead ends: 959 [2022-01-10 12:25:39,380 INFO L226 Difference]: Without dead ends: 621 [2022-01-10 12:25:39,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:25:39,382 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 209 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:39,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 1695 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:39,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-01-10 12:25:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 615. [2022-01-10 12:25:39,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 612 states have (on average 1.2696078431372548) internal successors, (777), 614 states have internal predecessors, (777), 0 states have call successors, (0), 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 12:25:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 777 transitions. [2022-01-10 12:25:39,441 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 777 transitions. Word has length 40 [2022-01-10 12:25:39,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:39,443 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 777 transitions. [2022-01-10 12:25:39,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 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 12:25:39,443 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 777 transitions. [2022-01-10 12:25:39,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 12:25:39,446 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:39,447 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] [2022-01-10 12:25:39,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:25:39,447 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:39,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:39,448 INFO L85 PathProgramCache]: Analyzing trace with hash 241134883, now seen corresponding path program 1 times [2022-01-10 12:25:39,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:39,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638299285] [2022-01-10 12:25:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:39,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:39,528 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 12:25:39,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:39,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638299285] [2022-01-10 12:25:39,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638299285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:39,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:39,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:25:39,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233982401] [2022-01-10 12:25:39,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:39,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:39,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:39,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:39,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:39,530 INFO L87 Difference]: Start difference. First operand 615 states and 777 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 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 12:25:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:39,680 INFO L93 Difference]: Finished difference Result 1314 states and 1643 transitions. [2022-01-10 12:25:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:25:39,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-10 12:25:39,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:39,683 INFO L225 Difference]: With dead ends: 1314 [2022-01-10 12:25:39,683 INFO L226 Difference]: Without dead ends: 862 [2022-01-10 12:25:39,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:25:39,686 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 592 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:39,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 897 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:39,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-01-10 12:25:39,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 615. [2022-01-10 12:25:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 612 states have (on average 1.2598039215686274) internal successors, (771), 614 states have internal predecessors, (771), 0 states have call successors, (0), 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 12:25:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 771 transitions. [2022-01-10 12:25:39,723 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 771 transitions. Word has length 40 [2022-01-10 12:25:39,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:39,724 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 771 transitions. [2022-01-10 12:25:39,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 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 12:25:39,725 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 771 transitions. [2022-01-10 12:25:39,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 12:25:39,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:39,726 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] [2022-01-10 12:25:39,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:25:39,726 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:39,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:39,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1748686692, now seen corresponding path program 1 times [2022-01-10 12:25:39,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:39,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072764624] [2022-01-10 12:25:39,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:39,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:39,782 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 12:25:39,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:39,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072764624] [2022-01-10 12:25:39,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072764624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:39,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:39,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:39,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894841799] [2022-01-10 12:25:39,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:39,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:39,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:39,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:39,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:39,785 INFO L87 Difference]: Start difference. First operand 615 states and 771 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 12:25:39,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:39,964 INFO L93 Difference]: Finished difference Result 2114 states and 2677 transitions. [2022-01-10 12:25:39,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:25:39,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-10 12:25:39,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:39,971 INFO L225 Difference]: With dead ends: 2114 [2022-01-10 12:25:39,971 INFO L226 Difference]: Without dead ends: 1506 [2022-01-10 12:25:39,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 12:25:39,974 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 771 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:39,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 1239 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:39,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-01-10 12:25:40,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 636. [2022-01-10 12:25:40,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 633 states have (on average 1.2417061611374407) internal successors, (786), 635 states have internal predecessors, (786), 0 states have call successors, (0), 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 12:25:40,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 786 transitions. [2022-01-10 12:25:40,026 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 786 transitions. Word has length 40 [2022-01-10 12:25:40,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:40,027 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 786 transitions. [2022-01-10 12:25:40,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 12:25:40,027 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 786 transitions. [2022-01-10 12:25:40,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 12:25:40,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:40,028 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] [2022-01-10 12:25:40,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:25:40,028 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:40,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:40,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1196664388, now seen corresponding path program 1 times [2022-01-10 12:25:40,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:40,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026576782] [2022-01-10 12:25:40,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:40,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:40,099 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 12:25:40,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:40,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026576782] [2022-01-10 12:25:40,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026576782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:40,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:40,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:40,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872305398] [2022-01-10 12:25:40,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:40,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:25:40,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:40,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:25:40,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:25:40,101 INFO L87 Difference]: Start difference. First operand 636 states and 786 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 12:25:40,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:40,487 INFO L93 Difference]: Finished difference Result 3896 states and 4824 transitions. [2022-01-10 12:25:40,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 12:25:40,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-01-10 12:25:40,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:40,497 INFO L225 Difference]: With dead ends: 3896 [2022-01-10 12:25:40,497 INFO L226 Difference]: Without dead ends: 3267 [2022-01-10 12:25:40,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:25:40,500 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 1756 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:40,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1756 Valid, 2106 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:40,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2022-01-10 12:25:40,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 1196. [2022-01-10 12:25:40,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1193 states have (on average 1.2279966471081307) internal successors, (1465), 1195 states have internal predecessors, (1465), 0 states have call successors, (0), 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 12:25:40,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1465 transitions. [2022-01-10 12:25:40,621 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1465 transitions. Word has length 43 [2022-01-10 12:25:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:40,622 INFO L470 AbstractCegarLoop]: Abstraction has 1196 states and 1465 transitions. [2022-01-10 12:25:40,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 12:25:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1465 transitions. [2022-01-10 12:25:40,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 12:25:40,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:40,623 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] [2022-01-10 12:25:40,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:25:40,623 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:40,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:40,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1712526285, now seen corresponding path program 1 times [2022-01-10 12:25:40,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:40,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412940352] [2022-01-10 12:25:40,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:40,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:40,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:40,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:40,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412940352] [2022-01-10 12:25:40,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412940352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:40,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:40,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:40,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064394984] [2022-01-10 12:25:40,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:40,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:40,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:40,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:40,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:40,681 INFO L87 Difference]: Start difference. First operand 1196 states and 1465 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 12:25:40,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:40,968 INFO L93 Difference]: Finished difference Result 3383 states and 4158 transitions. [2022-01-10 12:25:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:25:40,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 12:25:40,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:40,974 INFO L225 Difference]: With dead ends: 3383 [2022-01-10 12:25:40,974 INFO L226 Difference]: Without dead ends: 2194 [2022-01-10 12:25:40,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 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 12:25:40,979 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 535 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:40,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 1597 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:40,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2022-01-10 12:25:41,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 984. [2022-01-10 12:25:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 981 states have (on average 1.202854230377166) internal successors, (1180), 983 states have internal predecessors, (1180), 0 states have call successors, (0), 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 12:25:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1180 transitions. [2022-01-10 12:25:41,100 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1180 transitions. Word has length 44 [2022-01-10 12:25:41,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:41,100 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1180 transitions. [2022-01-10 12:25:41,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 12:25:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1180 transitions. [2022-01-10 12:25:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 12:25:41,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:41,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:41,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:25:41,101 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:41,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash -305717086, now seen corresponding path program 1 times [2022-01-10 12:25:41,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:41,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196149416] [2022-01-10 12:25:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:41,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:41,135 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 12:25:41,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:41,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196149416] [2022-01-10 12:25:41,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196149416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:41,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:41,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:41,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480714754] [2022-01-10 12:25:41,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:41,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:41,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:41,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:41,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:41,136 INFO L87 Difference]: Start difference. First operand 984 states and 1180 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:41,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:41,333 INFO L93 Difference]: Finished difference Result 2749 states and 3275 transitions. [2022-01-10 12:25:41,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:25:41,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-01-10 12:25:41,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:41,338 INFO L225 Difference]: With dead ends: 2749 [2022-01-10 12:25:41,338 INFO L226 Difference]: Without dead ends: 1592 [2022-01-10 12:25:41,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 12:25:41,340 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 509 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:41,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 1111 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:41,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2022-01-10 12:25:41,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 748. [2022-01-10 12:25:41,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 745 states have (on average 1.1838926174496645) internal successors, (882), 747 states have internal predecessors, (882), 0 states have call successors, (0), 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 12:25:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 882 transitions. [2022-01-10 12:25:41,401 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 882 transitions. Word has length 45 [2022-01-10 12:25:41,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:41,401 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 882 transitions. [2022-01-10 12:25:41,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 882 transitions. [2022-01-10 12:25:41,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:25:41,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:41,402 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:41,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:25:41,403 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:41,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1230283028, now seen corresponding path program 1 times [2022-01-10 12:25:41,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:41,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707711899] [2022-01-10 12:25:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:41,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:41,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:41,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707711899] [2022-01-10 12:25:41,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707711899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:41,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:41,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:25:41,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773968743] [2022-01-10 12:25:41,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:41,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:25:41,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:41,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:25:41,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:25:41,460 INFO L87 Difference]: Start difference. First operand 748 states and 882 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 12:25:41,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:41,505 INFO L93 Difference]: Finished difference Result 748 states and 882 transitions. [2022-01-10 12:25:41,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:25:41,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 12:25:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:41,507 INFO L225 Difference]: With dead ends: 748 [2022-01-10 12:25:41,507 INFO L226 Difference]: Without dead ends: 573 [2022-01-10 12:25:41,508 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 12:25:41,508 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 38 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:41,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 84 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:41,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-01-10 12:25:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2022-01-10 12:25:41,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 1.1888111888111887) internal successors, (680), 572 states have internal predecessors, (680), 0 states have call successors, (0), 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 12:25:41,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 680 transitions. [2022-01-10 12:25:41,562 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 680 transitions. Word has length 64 [2022-01-10 12:25:41,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:41,563 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 680 transitions. [2022-01-10 12:25:41,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 12:25:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 680 transitions. [2022-01-10 12:25:41,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:25:41,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:41,564 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:41,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:25:41,564 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:41,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1284721458, now seen corresponding path program 1 times [2022-01-10 12:25:41,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:41,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159858191] [2022-01-10 12:25:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:41,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:41,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:41,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159858191] [2022-01-10 12:25:41,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159858191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:41,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:41,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:25:41,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566861081] [2022-01-10 12:25:41,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:41,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:41,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:41,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:41,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:41,606 INFO L87 Difference]: Start difference. First operand 573 states and 680 transitions. Second operand has 5 states, 5 states have (on average 14.2) 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 12:25:41,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:41,719 INFO L93 Difference]: Finished difference Result 1507 states and 1786 transitions. [2022-01-10 12:25:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:25:41,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) 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 12:25:41,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:41,722 INFO L225 Difference]: With dead ends: 1507 [2022-01-10 12:25:41,722 INFO L226 Difference]: Without dead ends: 941 [2022-01-10 12:25:41,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 12:25:41,724 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 270 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:41,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 413 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:41,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-01-10 12:25:41,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 573. [2022-01-10 12:25:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 1.1765734265734267) internal successors, (673), 572 states have internal predecessors, (673), 0 states have call successors, (0), 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 12:25:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 673 transitions. [2022-01-10 12:25:41,787 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 673 transitions. Word has length 71 [2022-01-10 12:25:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:41,787 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 673 transitions. [2022-01-10 12:25:41,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) 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 12:25:41,787 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 673 transitions. [2022-01-10 12:25:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:25:41,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:41,788 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:41,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:25:41,788 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:41,788 INFO L85 PathProgramCache]: Analyzing trace with hash 680248576, now seen corresponding path program 1 times [2022-01-10 12:25:41,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:41,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103243369] [2022-01-10 12:25:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:41,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 12:25:41,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:41,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103243369] [2022-01-10 12:25:41,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103243369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:41,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:41,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:41,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931069298] [2022-01-10 12:25:41,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:41,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:41,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:41,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:41,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:41,849 INFO L87 Difference]: Start difference. First operand 573 states and 673 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 12:25:41,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:41,950 INFO L93 Difference]: Finished difference Result 1292 states and 1533 transitions. [2022-01-10 12:25:41,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:25:41,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 12:25:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:41,952 INFO L225 Difference]: With dead ends: 1292 [2022-01-10 12:25:41,953 INFO L226 Difference]: Without dead ends: 857 [2022-01-10 12:25:41,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 12:25:41,954 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 168 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:41,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 411 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:41,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-01-10 12:25:42,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 585. [2022-01-10 12:25:42,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 1.172945205479452) internal successors, (685), 584 states have internal predecessors, (685), 0 states have call successors, (0), 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 12:25:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 685 transitions. [2022-01-10 12:25:42,013 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 685 transitions. Word has length 73 [2022-01-10 12:25:42,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:42,013 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 685 transitions. [2022-01-10 12:25:42,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 12:25:42,013 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 685 transitions. [2022-01-10 12:25:42,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:25:42,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:42,015 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:42,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:25:42,016 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:42,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash 174689951, now seen corresponding path program 1 times [2022-01-10 12:25:42,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:42,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551319771] [2022-01-10 12:25:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:42,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:42,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:42,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551319771] [2022-01-10 12:25:42,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551319771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:42,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:42,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:42,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472217660] [2022-01-10 12:25:42,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:42,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:25:42,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:42,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:25:42,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:25:42,124 INFO L87 Difference]: Start difference. First operand 585 states and 685 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:42,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:42,437 INFO L93 Difference]: Finished difference Result 2179 states and 2583 transitions. [2022-01-10 12:25:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 12:25:42,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 12:25:42,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:42,442 INFO L225 Difference]: With dead ends: 2179 [2022-01-10 12:25:42,442 INFO L226 Difference]: Without dead ends: 1893 [2022-01-10 12:25:42,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 12:25:42,443 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 445 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:42,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 1069 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2022-01-10 12:25:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 839. [2022-01-10 12:25:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 838 states have (on average 1.165871121718377) internal successors, (977), 838 states have internal predecessors, (977), 0 states have call successors, (0), 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 12:25:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 977 transitions. [2022-01-10 12:25:42,551 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 977 transitions. Word has length 73 [2022-01-10 12:25:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:42,551 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 977 transitions. [2022-01-10 12:25:42,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 977 transitions. [2022-01-10 12:25:42,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:25:42,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:42,552 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:42,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:25:42,553 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:42,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:42,553 INFO L85 PathProgramCache]: Analyzing trace with hash -23591071, now seen corresponding path program 1 times [2022-01-10 12:25:42,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:42,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205483203] [2022-01-10 12:25:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:42,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 12:25:42,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:42,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205483203] [2022-01-10 12:25:42,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205483203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:42,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:42,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:42,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791717001] [2022-01-10 12:25:42,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:42,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:42,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:42,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:42,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:42,592 INFO L87 Difference]: Start difference. First operand 839 states and 977 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 12:25:42,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:42,722 INFO L93 Difference]: Finished difference Result 1929 states and 2254 transitions. [2022-01-10 12:25:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:25:42,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 73 [2022-01-10 12:25:42,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:42,725 INFO L225 Difference]: With dead ends: 1929 [2022-01-10 12:25:42,725 INFO L226 Difference]: Without dead ends: 1097 [2022-01-10 12:25:42,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 12:25:42,726 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 125 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:42,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 325 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:42,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-01-10 12:25:42,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 839. [2022-01-10 12:25:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 838 states have (on average 1.1563245823389021) internal successors, (969), 838 states have internal predecessors, (969), 0 states have call successors, (0), 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 12:25:42,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 969 transitions. [2022-01-10 12:25:42,812 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 969 transitions. Word has length 73 [2022-01-10 12:25:42,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:42,812 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 969 transitions. [2022-01-10 12:25:42,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 12:25:42,812 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 969 transitions. [2022-01-10 12:25:42,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:25:42,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:42,813 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:42,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:25:42,813 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:42,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:42,813 INFO L85 PathProgramCache]: Analyzing trace with hash -264131200, now seen corresponding path program 1 times [2022-01-10 12:25:42,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:42,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464436412] [2022-01-10 12:25:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:42,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 12:25:42,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:42,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464436412] [2022-01-10 12:25:42,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464436412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:42,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:42,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:25:42,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598753203] [2022-01-10 12:25:42,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:42,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:25:42,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:42,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:25:42,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:25:42,842 INFO L87 Difference]: Start difference. First operand 839 states and 969 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 12:25:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:42,923 INFO L93 Difference]: Finished difference Result 1599 states and 1862 transitions. [2022-01-10 12:25:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:25:42,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 73 [2022-01-10 12:25:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:42,925 INFO L225 Difference]: With dead ends: 1599 [2022-01-10 12:25:42,925 INFO L226 Difference]: Without dead ends: 767 [2022-01-10 12:25:42,926 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 12:25:42,926 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 89 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:42,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 251 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-01-10 12:25:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 577. [2022-01-10 12:25:42,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 1.1545138888888888) internal successors, (665), 576 states have internal predecessors, (665), 0 states have call successors, (0), 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 12:25:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 665 transitions. [2022-01-10 12:25:42,993 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 665 transitions. Word has length 73 [2022-01-10 12:25:42,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:42,993 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 665 transitions. [2022-01-10 12:25:42,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 12:25:42,993 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 665 transitions. [2022-01-10 12:25:42,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 12:25:42,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:42,994 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:42,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:25:42,994 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:42,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:42,994 INFO L85 PathProgramCache]: Analyzing trace with hash -25061570, now seen corresponding path program 1 times [2022-01-10 12:25:42,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:42,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899127544] [2022-01-10 12:25:42,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:42,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 12:25:43,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:43,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899127544] [2022-01-10 12:25:43,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899127544] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:43,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:43,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:25:43,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146586120] [2022-01-10 12:25:43,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:43,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:25:43,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:43,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:25:43,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:25:43,033 INFO L87 Difference]: Start difference. First operand 577 states and 665 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:43,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:43,162 INFO L93 Difference]: Finished difference Result 1409 states and 1629 transitions. [2022-01-10 12:25:43,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:25:43,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 12:25:43,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:43,165 INFO L225 Difference]: With dead ends: 1409 [2022-01-10 12:25:43,165 INFO L226 Difference]: Without dead ends: 903 [2022-01-10 12:25:43,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:25:43,166 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 250 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:43,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 748 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:43,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-01-10 12:25:43,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 549. [2022-01-10 12:25:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.155109489051095) internal successors, (633), 548 states have internal predecessors, (633), 0 states have call successors, (0), 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 12:25:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 633 transitions. [2022-01-10 12:25:43,231 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 633 transitions. Word has length 75 [2022-01-10 12:25:43,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:43,232 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 633 transitions. [2022-01-10 12:25:43,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 633 transitions. [2022-01-10 12:25:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 12:25:43,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:43,233 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:43,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:25:43,233 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:43,233 INFO L85 PathProgramCache]: Analyzing trace with hash -34809687, now seen corresponding path program 1 times [2022-01-10 12:25:43,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:43,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530426619] [2022-01-10 12:25:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:43,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:43,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:43,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530426619] [2022-01-10 12:25:43,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530426619] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:25:43,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881575699] [2022-01-10 12:25:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:43,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:25:43,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:25:43,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:25:43,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:25:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:43,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 12:25:43,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:25:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:43,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:25:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:43,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881575699] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 12:25:43,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 12:25:43,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 20 [2022-01-10 12:25:43,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795578818] [2022-01-10 12:25:43,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:43,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:25:43,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:43,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:25:43,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-10 12:25:43,860 INFO L87 Difference]: Start difference. First operand 549 states and 633 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:44,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:44,542 INFO L93 Difference]: Finished difference Result 3593 states and 4190 transitions. [2022-01-10 12:25:44,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 12:25:44,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 12:25:44,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:44,550 INFO L225 Difference]: With dead ends: 3593 [2022-01-10 12:25:44,550 INFO L226 Difference]: Without dead ends: 3115 [2022-01-10 12:25:44,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=863, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 12:25:44,552 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 995 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:44,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 1028 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:25:44,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2022-01-10 12:25:44,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 961. [2022-01-10 12:25:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 960 states have (on average 1.1635416666666667) internal successors, (1117), 960 states have internal predecessors, (1117), 0 states have call successors, (0), 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 12:25:44,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1117 transitions. [2022-01-10 12:25:44,681 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1117 transitions. Word has length 75 [2022-01-10 12:25:44,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:44,682 INFO L470 AbstractCegarLoop]: Abstraction has 961 states and 1117 transitions. [2022-01-10 12:25:44,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:44,682 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1117 transitions. [2022-01-10 12:25:44,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 12:25:44,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:44,683 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:44,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 12:25:44,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-10 12:25:44,901 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:44,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:44,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1757043247, now seen corresponding path program 1 times [2022-01-10 12:25:44,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:44,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744198405] [2022-01-10 12:25:44,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:44,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:45,012 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 12:25:45,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:45,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744198405] [2022-01-10 12:25:45,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744198405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:45,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:45,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:25:45,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820519356] [2022-01-10 12:25:45,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:45,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:25:45,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:45,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:25:45,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:25:45,014 INFO L87 Difference]: Start difference. First operand 961 states and 1117 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 12:25:46,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:46,272 INFO L93 Difference]: Finished difference Result 5952 states and 6939 transitions. [2022-01-10 12:25:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-10 12:25:46,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 106 [2022-01-10 12:25:46,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:46,284 INFO L225 Difference]: With dead ends: 5952 [2022-01-10 12:25:46,284 INFO L226 Difference]: Without dead ends: 4998 [2022-01-10 12:25:46,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=737, Unknown=0, NotChecked=0, Total=992 [2022-01-10 12:25:46,286 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 787 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:46,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 1854 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:25:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4998 states. [2022-01-10 12:25:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4998 to 1169. [2022-01-10 12:25:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 1168 states have (on average 1.1669520547945205) internal successors, (1363), 1168 states have internal predecessors, (1363), 0 states have call successors, (0), 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 12:25:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1363 transitions. [2022-01-10 12:25:46,458 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1363 transitions. Word has length 106 [2022-01-10 12:25:46,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:46,458 INFO L470 AbstractCegarLoop]: Abstraction has 1169 states and 1363 transitions. [2022-01-10 12:25:46,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 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 12:25:46,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1363 transitions. [2022-01-10 12:25:46,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 12:25:46,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:46,459 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:46,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:25:46,459 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:46,460 INFO L85 PathProgramCache]: Analyzing trace with hash 56302768, now seen corresponding path program 1 times [2022-01-10 12:25:46,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:46,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477370369] [2022-01-10 12:25:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:46,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 12:25:46,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:46,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477370369] [2022-01-10 12:25:46,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477370369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:46,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:46,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:46,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857462287] [2022-01-10 12:25:46,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:46,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:46,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:46,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:46,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:46,506 INFO L87 Difference]: Start difference. First operand 1169 states and 1363 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 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 12:25:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:46,588 INFO L93 Difference]: Finished difference Result 1587 states and 1839 transitions. [2022-01-10 12:25:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:25:46,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 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 106 [2022-01-10 12:25:46,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:46,588 INFO L225 Difference]: With dead ends: 1587 [2022-01-10 12:25:46,588 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 12:25:46,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 12:25:46,590 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 215 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:46,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 380 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:46,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 12:25:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 12:25:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 12:25:46,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 12:25:46,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 106 [2022-01-10 12:25:46,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:46,591 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 12:25:46,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 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 12:25:46,591 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 12:25:46,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 12:25:46,593 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-10 12:25:46,593 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-10 12:25:46,594 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-10 12:25:46,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:25:46,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 12:26:16,421 WARN L228 SmtUtils]: Spent 29.74s on a formula simplification that was a NOOP. DAG size: 285 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:26:37,925 WARN L228 SmtUtils]: Spent 21.45s on a formula simplification. DAG size of input: 240 DAG size of output: 238 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)