/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/combinations/Problem05_label47+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:43:43,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:43:43,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:43:43,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:43:43,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:43:43,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:43:43,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:43:43,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:43:43,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:43:43,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:43:43,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:43:43,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:43:43,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:43:43,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:43:43,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:43:43,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:43:43,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:43:43,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:43:43,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:43:43,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:43:43,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:43:43,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:43:43,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:43:43,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:43:43,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:43:43,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:43:43,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:43:43,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:43:43,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:43:43,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:43:43,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:43:43,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:43:43,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:43:43,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:43:43,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:43:43,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:43:43,713 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 13:43:43,734 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:43:43,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:43:43,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:43:43,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:43:43,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:43:43,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:43:43,741 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:43:43,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:43:43,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:43:43,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:43:43,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:43:43,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:43:43,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:43:43,743 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:43:43,743 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:43:43,743 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:43:43,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:43:43,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:43:43,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:43:43,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:43:43,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:43:43,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:43:43,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:43:43,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:43:43,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:43:43,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:43:43,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:43:43,744 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:43:43,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:43:43,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:43:43,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:43:43,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:43:43,745 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:43:43,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:43:43,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:43:43,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:43:43,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:43:43,910 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:43:43,910 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:43:43,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label47+token_ring.04.cil-1.c [2022-01-10 13:43:43,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80f57440/013172a8595b4589aa3a828075f2acf2/FLAGb405a2666 [2022-01-10 13:43:44,606 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:43:44,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.04.cil-1.c [2022-01-10 13:43:44,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80f57440/013172a8595b4589aa3a828075f2acf2/FLAGb405a2666 [2022-01-10 13:43:44,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c80f57440/013172a8595b4589aa3a828075f2acf2 [2022-01-10 13:43:44,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:43:44,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:43:44,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:43:44,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:43:44,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:43:44,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:43:44" (1/1) ... [2022-01-10 13:43:44,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe7218b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:44, skipping insertion in model container [2022-01-10 13:43:44,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:43:44" (1/1) ... [2022-01-10 13:43:44,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:43:44,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:43:46,016 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.04.cil-1.c[377612,377625] [2022-01-10 13:43:46,035 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.04.cil-1.c[383339,383352] [2022-01-10 13:43:46,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:43:46,140 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:43:46,764 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.04.cil-1.c[377612,377625] [2022-01-10 13:43:46,772 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.04.cil-1.c[383339,383352] [2022-01-10 13:43:46,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:43:46,831 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:43:46,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:46 WrapperNode [2022-01-10 13:43:46,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:43:46,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:43:46,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:43:46,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:43:46,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:46" (1/1) ... [2022-01-10 13:43:46,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:46" (1/1) ... [2022-01-10 13:43:47,270 INFO L137 Inliner]: procedures = 53, calls = 53, calls flagged for inlining = 48, calls inlined = 87, statements flattened = 13397 [2022-01-10 13:43:47,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:43:47,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:43:47,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:43:47,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:43:47,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:46" (1/1) ... [2022-01-10 13:43:47,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:46" (1/1) ... [2022-01-10 13:43:47,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:46" (1/1) ... [2022-01-10 13:43:47,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:46" (1/1) ... [2022-01-10 13:43:47,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:46" (1/1) ... [2022-01-10 13:43:47,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:46" (1/1) ... [2022-01-10 13:43:47,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:46" (1/1) ... [2022-01-10 13:43:47,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:43:47,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:43:47,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:43:47,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:43:47,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:46" (1/1) ... [2022-01-10 13:43:47,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:43:47,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:43:47,684 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 13:43:47,773 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 13:43:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:43:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:43:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:43:47,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:43:47,908 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:43:47,909 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:43:54,323 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:43:54,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:43:54,385 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 13:43:54,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:43:54 BoogieIcfgContainer [2022-01-10 13:43:54,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:43:54,405 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:43:54,405 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:43:54,406 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:43:54,409 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:43:54" (1/1) ... [2022-01-10 13:43:55,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:43:55 BasicIcfg [2022-01-10 13:43:55,620 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:43:55,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:43:55,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:43:55,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:43:55,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:43:44" (1/4) ... [2022-01-10 13:43:55,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ac51d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:43:55, skipping insertion in model container [2022-01-10 13:43:55,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:46" (2/4) ... [2022-01-10 13:43:55,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ac51d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:43:55, skipping insertion in model container [2022-01-10 13:43:55,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:43:54" (3/4) ... [2022-01-10 13:43:55,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ac51d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:43:55, skipping insertion in model container [2022-01-10 13:43:55,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:43:55" (4/4) ... [2022-01-10 13:43:55,852 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.04.cil-1.cTransformedIcfg [2022-01-10 13:43:55,855 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:43:55,855 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 13:43:55,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:43:55,903 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 13:43:55,903 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 13:43:55,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 2615 states, 2612 states have (on average 1.8162327718223583) internal successors, (4744), 2614 states have internal predecessors, (4744), 0 states have call successors, (0), 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 13:43:55,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:43:55,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:55,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:43:55,961 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:55,964 INFO L85 PathProgramCache]: Analyzing trace with hash -647753568, now seen corresponding path program 1 times [2022-01-10 13:43:55,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:55,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877404368] [2022-01-10 13:43:55,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:55,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:56,206 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 13:43:56,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:56,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877404368] [2022-01-10 13:43:56,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877404368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:56,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:56,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:43:56,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974074164] [2022-01-10 13:43:56,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:56,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:43:56,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:56,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:43:56,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:43:56,240 INFO L87 Difference]: Start difference. First operand has 2615 states, 2612 states have (on average 1.8162327718223583) internal successors, (4744), 2614 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:56,482 INFO L93 Difference]: Finished difference Result 5216 states and 9466 transitions. [2022-01-10 13:43:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:43:56,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 13:43:56,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:56,524 INFO L225 Difference]: With dead ends: 5216 [2022-01-10 13:43:56,524 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:43:56,531 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 13:43:56,533 INFO L933 BasicCegarLoop]: 4655 mSDtfsCounter, 4648 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 4655 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:56,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4648 Valid, 4655 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:56,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:43:56,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:43:56,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8040062843676354) internal successors, (4593), 2547 states have internal predecessors, (4593), 0 states have call successors, (0), 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 13:43:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-01-10 13:43:56,641 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 77 [2022-01-10 13:43:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:56,642 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-01-10 13:43:56,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-01-10 13:43:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:43:56,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:56,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:43:56,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:43:56,651 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:56,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:56,651 INFO L85 PathProgramCache]: Analyzing trace with hash 656640161, now seen corresponding path program 1 times [2022-01-10 13:43:56,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:56,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36487524] [2022-01-10 13:43:56,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:56,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:56,721 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 13:43:56,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:56,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36487524] [2022-01-10 13:43:56,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36487524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:56,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:56,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:43:56,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999662005] [2022-01-10 13:43:56,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:56,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:43:56,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:56,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:43:56,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:43:56,723 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:56,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:56,780 INFO L93 Difference]: Finished difference Result 2962 states and 5208 transitions. [2022-01-10 13:43:56,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:43:56,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 13:43:56,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:56,787 INFO L225 Difference]: With dead ends: 2962 [2022-01-10 13:43:56,788 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:43:56,790 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 13:43:56,791 INFO L933 BasicCegarLoop]: 4583 mSDtfsCounter, 4575 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4575 SdHoareTripleChecker+Valid, 4583 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:56,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4575 Valid, 4583 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:43:56,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:43:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8020424194815396) internal successors, (4588), 2547 states have internal predecessors, (4588), 0 states have call successors, (0), 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 13:43:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4588 transitions. [2022-01-10 13:43:56,834 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4588 transitions. Word has length 77 [2022-01-10 13:43:56,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:56,834 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4588 transitions. [2022-01-10 13:43:56,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4588 transitions. [2022-01-10 13:43:56,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:43:56,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:56,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:43:56,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:43:56,844 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash -273275455, now seen corresponding path program 1 times [2022-01-10 13:43:56,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:56,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880844732] [2022-01-10 13:43:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:56,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:56,928 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 13:43:56,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:56,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880844732] [2022-01-10 13:43:56,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880844732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:56,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:56,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:43:56,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395598147] [2022-01-10 13:43:56,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:56,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:43:56,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:56,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:43:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:43:56,930 INFO L87 Difference]: Start difference. First operand 2548 states and 4588 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:57,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:57,110 INFO L93 Difference]: Finished difference Result 2961 states and 5197 transitions. [2022-01-10 13:43:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:43:57,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 13:43:57,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:57,118 INFO L225 Difference]: With dead ends: 2961 [2022-01-10 13:43:57,118 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:43:57,122 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 13:43:57,125 INFO L933 BasicCegarLoop]: 4578 mSDtfsCounter, 4569 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 4578 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:57,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4569 Valid, 4578 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:57,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:43:57,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:43:57,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.8000785545954439) internal successors, (4583), 2547 states have internal predecessors, (4583), 0 states have call successors, (0), 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 13:43:57,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4583 transitions. [2022-01-10 13:43:57,168 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4583 transitions. Word has length 77 [2022-01-10 13:43:57,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:57,168 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4583 transitions. [2022-01-10 13:43:57,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:57,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4583 transitions. [2022-01-10 13:43:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:43:57,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:57,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:43:57,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:43:57,169 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:57,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:57,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1774937249, now seen corresponding path program 1 times [2022-01-10 13:43:57,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:57,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840011645] [2022-01-10 13:43:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:57,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:43:57,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:57,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840011645] [2022-01-10 13:43:57,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840011645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:57,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:57,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:43:57,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866658340] [2022-01-10 13:43:57,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:57,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:43:57,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:57,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:43:57,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:43:57,239 INFO L87 Difference]: Start difference. First operand 2548 states and 4583 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:57,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:57,279 INFO L93 Difference]: Finished difference Result 2960 states and 5186 transitions. [2022-01-10 13:43:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:43:57,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 13:43:57,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:57,287 INFO L225 Difference]: With dead ends: 2960 [2022-01-10 13:43:57,287 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:43:57,289 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 13:43:57,294 INFO L933 BasicCegarLoop]: 4573 mSDtfsCounter, 4563 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4563 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:57,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4563 Valid, 4573 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:57,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:43:57,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:43:57,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.798114689709348) internal successors, (4578), 2547 states have internal predecessors, (4578), 0 states have call successors, (0), 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 13:43:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4578 transitions. [2022-01-10 13:43:57,335 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4578 transitions. Word has length 77 [2022-01-10 13:43:57,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:57,335 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4578 transitions. [2022-01-10 13:43:57,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:57,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4578 transitions. [2022-01-10 13:43:57,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:43:57,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:57,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:43:57,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:43:57,337 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:57,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:57,339 INFO L85 PathProgramCache]: Analyzing trace with hash 178440641, now seen corresponding path program 1 times [2022-01-10 13:43:57,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:57,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495134063] [2022-01-10 13:43:57,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:57,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:57,373 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 13:43:57,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:57,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495134063] [2022-01-10 13:43:57,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495134063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:57,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:57,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:43:57,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712137557] [2022-01-10 13:43:57,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:57,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:43:57,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:57,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:43:57,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:43:57,374 INFO L87 Difference]: Start difference. First operand 2548 states and 4578 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:57,422 INFO L93 Difference]: Finished difference Result 2959 states and 5175 transitions. [2022-01-10 13:43:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:43:57,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 13:43:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:57,429 INFO L225 Difference]: With dead ends: 2959 [2022-01-10 13:43:57,429 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:43:57,430 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 13:43:57,430 INFO L933 BasicCegarLoop]: 4554 mSDtfsCounter, 4498 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 4602 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:57,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4498 Valid, 4602 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:43:57,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:43:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.793401413982718) internal successors, (4566), 2547 states have internal predecessors, (4566), 0 states have call successors, (0), 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 13:43:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4566 transitions. [2022-01-10 13:43:57,475 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4566 transitions. Word has length 77 [2022-01-10 13:43:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:57,475 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4566 transitions. [2022-01-10 13:43:57,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4566 transitions. [2022-01-10 13:43:57,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:43:57,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:57,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:43:57,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:43:57,477 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:57,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:57,477 INFO L85 PathProgramCache]: Analyzing trace with hash 581156033, now seen corresponding path program 1 times [2022-01-10 13:43:57,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:57,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69155264] [2022-01-10 13:43:57,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:57,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:57,500 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 13:43:57,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:57,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69155264] [2022-01-10 13:43:57,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69155264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:57,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:57,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:43:57,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807614913] [2022-01-10 13:43:57,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:57,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:43:57,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:57,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:43:57,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:43:57,502 INFO L87 Difference]: Start difference. First operand 2548 states and 4566 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:57,560 INFO L93 Difference]: Finished difference Result 2958 states and 5150 transitions. [2022-01-10 13:43:57,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:43:57,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 13:43:57,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:57,567 INFO L225 Difference]: With dead ends: 2958 [2022-01-10 13:43:57,568 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:43:57,569 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 13:43:57,570 INFO L933 BasicCegarLoop]: 4542 mSDtfsCounter, 4486 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4486 SdHoareTripleChecker+Valid, 4589 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:57,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4486 Valid, 4589 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:57,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:43:57,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:43:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.788688138256088) internal successors, (4554), 2547 states have internal predecessors, (4554), 0 states have call successors, (0), 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 13:43:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4554 transitions. [2022-01-10 13:43:57,609 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4554 transitions. Word has length 77 [2022-01-10 13:43:57,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:57,609 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4554 transitions. [2022-01-10 13:43:57,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:57,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4554 transitions. [2022-01-10 13:43:57,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:43:57,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:57,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:43:57,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:43:57,610 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:57,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:57,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1768998816, now seen corresponding path program 1 times [2022-01-10 13:43:57,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:57,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87005588] [2022-01-10 13:43:57,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:57,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:57,644 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 13:43:57,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:57,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87005588] [2022-01-10 13:43:57,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87005588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:57,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:57,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:43:57,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181931072] [2022-01-10 13:43:57,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:57,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:43:57,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:57,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:43:57,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:43:57,646 INFO L87 Difference]: Start difference. First operand 2548 states and 4554 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:57,698 INFO L93 Difference]: Finished difference Result 2956 states and 5123 transitions. [2022-01-10 13:43:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:43:57,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 13:43:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:57,706 INFO L225 Difference]: With dead ends: 2956 [2022-01-10 13:43:57,706 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:43:57,707 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 13:43:57,708 INFO L933 BasicCegarLoop]: 4530 mSDtfsCounter, 4473 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:57,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4473 Valid, 4576 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:57,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:43:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:43:57,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.783974862529458) internal successors, (4542), 2547 states have internal predecessors, (4542), 0 states have call successors, (0), 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 13:43:57,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4542 transitions. [2022-01-10 13:43:57,760 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4542 transitions. Word has length 77 [2022-01-10 13:43:57,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:57,762 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4542 transitions. [2022-01-10 13:43:57,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4542 transitions. [2022-01-10 13:43:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:43:57,763 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:57,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:43:57,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:43:57,763 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:57,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:57,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1127088383, now seen corresponding path program 1 times [2022-01-10 13:43:57,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:57,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032036441] [2022-01-10 13:43:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:57,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:57,793 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 13:43:57,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:57,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032036441] [2022-01-10 13:43:57,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032036441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:57,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:57,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:43:57,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107923610] [2022-01-10 13:43:57,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:57,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:43:57,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:57,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:43:57,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:43:57,795 INFO L87 Difference]: Start difference. First operand 2548 states and 4542 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:57,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:57,878 INFO L93 Difference]: Finished difference Result 2955 states and 5098 transitions. [2022-01-10 13:43:57,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:43:57,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 13:43:57,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:57,886 INFO L225 Difference]: With dead ends: 2955 [2022-01-10 13:43:57,886 INFO L226 Difference]: Without dead ends: 2548 [2022-01-10 13:43:57,887 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 13:43:57,887 INFO L933 BasicCegarLoop]: 4518 mSDtfsCounter, 4461 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 4563 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:57,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4461 Valid, 4563 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-10 13:43:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2022-01-10 13:43:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2546 states have (on average 1.7792615868028279) internal successors, (4530), 2547 states have internal predecessors, (4530), 0 states have call successors, (0), 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 13:43:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4530 transitions. [2022-01-10 13:43:57,932 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4530 transitions. Word has length 77 [2022-01-10 13:43:57,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:57,933 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 4530 transitions. [2022-01-10 13:43:57,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4530 transitions. [2022-01-10 13:43:57,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:43:57,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:57,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:43:57,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:43:57,934 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2130979199, now seen corresponding path program 1 times [2022-01-10 13:43:57,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:57,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664004556] [2022-01-10 13:43:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:57,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:57,990 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 13:43:57,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:57,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664004556] [2022-01-10 13:43:57,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664004556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:57,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:57,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:43:57,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796234752] [2022-01-10 13:43:57,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:57,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:43:57,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:57,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:43:57,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:43:57,992 INFO L87 Difference]: Start difference. First operand 2548 states and 4530 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:58,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:58,140 INFO L93 Difference]: Finished difference Result 3162 states and 5362 transitions. [2022-01-10 13:43:58,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:43:58,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 13:43:58,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:58,158 INFO L225 Difference]: With dead ends: 3162 [2022-01-10 13:43:58,158 INFO L226 Difference]: Without dead ends: 2769 [2022-01-10 13:43:58,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:43:58,160 INFO L933 BasicCegarLoop]: 4564 mSDtfsCounter, 1458 mSDsluCounter, 12849 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 17413 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:58,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 17413 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:58,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-01-10 13:43:58,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2551. [2022-01-10 13:43:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2551 states, 2549 states have (on average 1.7755982738328757) internal successors, (4526), 2550 states have internal predecessors, (4526), 0 states have call successors, (0), 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 13:43:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2551 states to 2551 states and 4526 transitions. [2022-01-10 13:43:58,216 INFO L78 Accepts]: Start accepts. Automaton has 2551 states and 4526 transitions. Word has length 77 [2022-01-10 13:43:58,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:58,216 INFO L470 AbstractCegarLoop]: Abstraction has 2551 states and 4526 transitions. [2022-01-10 13:43:58,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:58,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2551 states and 4526 transitions. [2022-01-10 13:43:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:43:58,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:58,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:43:58,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:43:58,220 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:58,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:58,220 INFO L85 PathProgramCache]: Analyzing trace with hash 430238720, now seen corresponding path program 1 times [2022-01-10 13:43:58,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:58,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316768676] [2022-01-10 13:43:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:58,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:58,256 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 13:43:58,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:58,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316768676] [2022-01-10 13:43:58,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316768676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:58,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:58,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:43:58,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459179645] [2022-01-10 13:43:58,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:58,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:43:58,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:58,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:43:58,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:43:58,258 INFO L87 Difference]: Start difference. First operand 2551 states and 4526 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:58,352 INFO L93 Difference]: Finished difference Result 3262 states and 5464 transitions. [2022-01-10 13:43:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:43:58,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 13:43:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:58,357 INFO L225 Difference]: With dead ends: 3262 [2022-01-10 13:43:58,358 INFO L226 Difference]: Without dead ends: 2868 [2022-01-10 13:43:58,359 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 13:43:58,360 INFO L933 BasicCegarLoop]: 4512 mSDtfsCounter, 4415 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 4972 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:58,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 4972 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:58,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-01-10 13:43:58,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2864. [2022-01-10 13:43:58,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2862 states have (on average 1.7232704402515724) internal successors, (4932), 2863 states have internal predecessors, (4932), 0 states have call successors, (0), 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 13:43:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4932 transitions. [2022-01-10 13:43:58,437 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4932 transitions. Word has length 77 [2022-01-10 13:43:58,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:58,437 INFO L470 AbstractCegarLoop]: Abstraction has 2864 states and 4932 transitions. [2022-01-10 13:43:58,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:58,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4932 transitions. [2022-01-10 13:43:58,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:43:58,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:58,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:43:58,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:43:58,439 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:58,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:58,440 INFO L85 PathProgramCache]: Analyzing trace with hash 229688575, now seen corresponding path program 1 times [2022-01-10 13:43:58,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:58,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317079496] [2022-01-10 13:43:58,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:58,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:58,474 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 13:43:58,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:58,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317079496] [2022-01-10 13:43:58,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317079496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:58,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:58,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:43:58,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305046597] [2022-01-10 13:43:58,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:58,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:43:58,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:43:58,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:43:58,476 INFO L87 Difference]: Start difference. First operand 2864 states and 4932 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:58,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:58,575 INFO L93 Difference]: Finished difference Result 4200 states and 6687 transitions. [2022-01-10 13:43:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:43:58,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 13:43:58,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:58,584 INFO L225 Difference]: With dead ends: 4200 [2022-01-10 13:43:58,584 INFO L226 Difference]: Without dead ends: 3468 [2022-01-10 13:43:58,585 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 13:43:58,586 INFO L933 BasicCegarLoop]: 4514 mSDtfsCounter, 4415 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 4986 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:58,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4415 Valid, 4986 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:58,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2022-01-10 13:43:58,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3466. [2022-01-10 13:43:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3464 states have (on average 1.6521362586605082) internal successors, (5723), 3465 states have internal predecessors, (5723), 0 states have call successors, (0), 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 13:43:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 5723 transitions. [2022-01-10 13:43:58,722 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 5723 transitions. Word has length 77 [2022-01-10 13:43:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:58,722 INFO L470 AbstractCegarLoop]: Abstraction has 3466 states and 5723 transitions. [2022-01-10 13:43:58,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 5723 transitions. [2022-01-10 13:43:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:43:58,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:58,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:43:58,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:43:58,723 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:58,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:58,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1847520768, now seen corresponding path program 1 times [2022-01-10 13:43:58,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:58,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956789739] [2022-01-10 13:43:58,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:58,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:58,768 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 13:43:58,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:58,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956789739] [2022-01-10 13:43:58,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956789739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:58,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:58,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:43:58,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839238932] [2022-01-10 13:43:58,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:58,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:43:58,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:58,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:43:58,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:43:58,769 INFO L87 Difference]: Start difference. First operand 3466 states and 5723 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:58,858 INFO L93 Difference]: Finished difference Result 4793 states and 7464 transitions. [2022-01-10 13:43:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:43:58,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 13:43:58,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:58,864 INFO L225 Difference]: With dead ends: 4793 [2022-01-10 13:43:58,864 INFO L226 Difference]: Without dead ends: 3466 [2022-01-10 13:43:58,866 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 13:43:58,867 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4401 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:58,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4401 Valid, 4539 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:58,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2022-01-10 13:43:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 3466. [2022-01-10 13:43:58,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3464 states have (on average 1.6449191685912241) internal successors, (5698), 3465 states have internal predecessors, (5698), 0 states have call successors, (0), 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 13:43:58,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 5698 transitions. [2022-01-10 13:43:58,964 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 5698 transitions. Word has length 77 [2022-01-10 13:43:58,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:58,965 INFO L470 AbstractCegarLoop]: Abstraction has 3466 states and 5698 transitions. [2022-01-10 13:43:58,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:58,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 5698 transitions. [2022-01-10 13:43:58,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 13:43:58,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:58,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:43:58,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:43:58,966 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:58,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:58,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1450374175, now seen corresponding path program 1 times [2022-01-10 13:43:58,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:58,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281732684] [2022-01-10 13:43:58,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:58,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:59,004 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 13:43:59,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:59,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281732684] [2022-01-10 13:43:59,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281732684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:59,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:59,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:43:59,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895339969] [2022-01-10 13:43:59,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:59,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:43:59,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:59,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:43:59,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:43:59,005 INFO L87 Difference]: Start difference. First operand 3466 states and 5698 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:59,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:59,143 INFO L93 Difference]: Finished difference Result 6029 states and 9021 transitions. [2022-01-10 13:43:59,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:43:59,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 13:43:59,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:59,151 INFO L225 Difference]: With dead ends: 6029 [2022-01-10 13:43:59,151 INFO L226 Difference]: Without dead ends: 4706 [2022-01-10 13:43:59,153 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 13:43:59,154 INFO L933 BasicCegarLoop]: 4496 mSDtfsCounter, 4409 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4409 SdHoareTripleChecker+Valid, 4947 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:59,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4409 Valid, 4947 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:59,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2022-01-10 13:43:59,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4560. [2022-01-10 13:43:59,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4558 states have (on average 1.556823168056165) internal successors, (7096), 4559 states have internal predecessors, (7096), 0 states have call successors, (0), 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 13:43:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 7096 transitions. [2022-01-10 13:43:59,307 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 7096 transitions. Word has length 77 [2022-01-10 13:43:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:59,308 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 7096 transitions. [2022-01-10 13:43:59,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 13:43:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 7096 transitions. [2022-01-10 13:43:59,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:43:59,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:59,310 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:43:59,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:43:59,310 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:59,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:59,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1630624386, now seen corresponding path program 1 times [2022-01-10 13:43:59,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:59,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855456185] [2022-01-10 13:43:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:59,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:43:59,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:59,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855456185] [2022-01-10 13:43:59,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855456185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:59,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:59,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:43:59,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950286335] [2022-01-10 13:43:59,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:59,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:43:59,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:59,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:43:59,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:43:59,352 INFO L87 Difference]: Start difference. First operand 4560 states and 7096 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:43:59,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:43:59,595 INFO L93 Difference]: Finished difference Result 9212 states and 13099 transitions. [2022-01-10 13:43:59,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:43:59,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 13:43:59,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:43:59,605 INFO L225 Difference]: With dead ends: 9212 [2022-01-10 13:43:59,606 INFO L226 Difference]: Without dead ends: 6801 [2022-01-10 13:43:59,609 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 13:43:59,610 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 4418 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 4944 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:43:59,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 4944 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:43:59,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6801 states. [2022-01-10 13:43:59,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6801 to 6571. [2022-01-10 13:43:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6571 states, 6569 states have (on average 1.472674684122393) internal successors, (9674), 6570 states have internal predecessors, (9674), 0 states have call successors, (0), 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 13:43:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 9674 transitions. [2022-01-10 13:43:59,881 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 9674 transitions. Word has length 124 [2022-01-10 13:43:59,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:43:59,881 INFO L470 AbstractCegarLoop]: Abstraction has 6571 states and 9674 transitions. [2022-01-10 13:43:59,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:43:59,882 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 9674 transitions. [2022-01-10 13:43:59,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:43:59,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:43:59,884 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:43:59,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:43:59,885 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:43:59,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:43:59,885 INFO L85 PathProgramCache]: Analyzing trace with hash 549899582, now seen corresponding path program 1 times [2022-01-10 13:43:59,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:43:59,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482666256] [2022-01-10 13:43:59,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:43:59,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:43:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:43:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:43:59,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:43:59,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482666256] [2022-01-10 13:43:59,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482666256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:43:59,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:43:59,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:43:59,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431564379] [2022-01-10 13:43:59,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:43:59,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:43:59,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:43:59,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:43:59,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:43:59,948 INFO L87 Difference]: Start difference. First operand 6571 states and 9674 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:00,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:44:00,453 INFO L93 Difference]: Finished difference Result 14833 states and 20425 transitions. [2022-01-10 13:44:00,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:44:00,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 13:44:00,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:44:00,469 INFO L225 Difference]: With dead ends: 14833 [2022-01-10 13:44:00,469 INFO L226 Difference]: Without dead ends: 10435 [2022-01-10 13:44:00,476 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 13:44:00,476 INFO L933 BasicCegarLoop]: 4479 mSDtfsCounter, 1136 mSDsluCounter, 13259 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 17738 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:44:00,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1136 Valid, 17738 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:44:00,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-01-10 13:44:00,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 6619. [2022-01-10 13:44:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6619 states, 6617 states have (on average 1.4594226991083572) internal successors, (9657), 6618 states have internal predecessors, (9657), 0 states have call successors, (0), 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 13:44:00,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6619 states to 6619 states and 9657 transitions. [2022-01-10 13:44:00,783 INFO L78 Accepts]: Start accepts. Automaton has 6619 states and 9657 transitions. Word has length 124 [2022-01-10 13:44:00,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:44:00,783 INFO L470 AbstractCegarLoop]: Abstraction has 6619 states and 9657 transitions. [2022-01-10 13:44:00,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:00,783 INFO L276 IsEmpty]: Start isEmpty. Operand 6619 states and 9657 transitions. [2022-01-10 13:44:00,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:44:00,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:44:00,786 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:00,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:44:00,786 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:44:00,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:44:00,787 INFO L85 PathProgramCache]: Analyzing trace with hash 584686780, now seen corresponding path program 1 times [2022-01-10 13:44:00,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:44:00,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256833178] [2022-01-10 13:44:00,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:44:00,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:44:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:44:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:44:00,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:44:00,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256833178] [2022-01-10 13:44:00,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256833178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:44:00,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:44:00,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:44:00,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482467221] [2022-01-10 13:44:00,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:44:00,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:44:00,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:44:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:44:00,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:44:00,827 INFO L87 Difference]: Start difference. First operand 6619 states and 9657 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:44:01,231 INFO L93 Difference]: Finished difference Result 15041 states and 20225 transitions. [2022-01-10 13:44:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:44:01,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 13:44:01,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:44:01,248 INFO L225 Difference]: With dead ends: 15041 [2022-01-10 13:44:01,248 INFO L226 Difference]: Without dead ends: 10607 [2022-01-10 13:44:01,255 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 13:44:01,255 INFO L933 BasicCegarLoop]: 4690 mSDtfsCounter, 4315 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4315 SdHoareTripleChecker+Valid, 5208 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:44:01,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4315 Valid, 5208 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:44:01,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10607 states. [2022-01-10 13:44:01,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10607 to 10605. [2022-01-10 13:44:01,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10605 states, 10603 states have (on average 1.3708384419503914) internal successors, (14535), 10604 states have internal predecessors, (14535), 0 states have call successors, (0), 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 13:44:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10605 states to 10605 states and 14535 transitions. [2022-01-10 13:44:01,613 INFO L78 Accepts]: Start accepts. Automaton has 10605 states and 14535 transitions. Word has length 124 [2022-01-10 13:44:01,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:44:01,613 INFO L470 AbstractCegarLoop]: Abstraction has 10605 states and 14535 transitions. [2022-01-10 13:44:01,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:01,614 INFO L276 IsEmpty]: Start isEmpty. Operand 10605 states and 14535 transitions. [2022-01-10 13:44:01,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:44:01,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:44:01,618 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:01,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:44:01,618 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:44:01,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:44:01,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1810932571, now seen corresponding path program 1 times [2022-01-10 13:44:01,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:44:01,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013411864] [2022-01-10 13:44:01,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:44:01,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:44:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:44:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:44:01,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:44:01,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013411864] [2022-01-10 13:44:01,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013411864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:44:01,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:44:01,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:44:01,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027607855] [2022-01-10 13:44:01,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:44:01,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:44:01,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:44:01,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:44:01,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:44:01,641 INFO L87 Difference]: Start difference. First operand 10605 states and 14535 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:44:01,957 INFO L93 Difference]: Finished difference Result 18967 states and 24972 transitions. [2022-01-10 13:44:01,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:44:01,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-10 13:44:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:44:01,973 INFO L225 Difference]: With dead ends: 18967 [2022-01-10 13:44:01,973 INFO L226 Difference]: Without dead ends: 10547 [2022-01-10 13:44:01,982 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 13:44:01,982 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 532 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 8452 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:44:01,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 8452 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:44:01,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10547 states. [2022-01-10 13:44:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10547 to 10547. [2022-01-10 13:44:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10547 states, 10545 states have (on average 1.3720246562351825) internal successors, (14468), 10546 states have internal predecessors, (14468), 0 states have call successors, (0), 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 13:44:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10547 states to 10547 states and 14468 transitions. [2022-01-10 13:44:02,323 INFO L78 Accepts]: Start accepts. Automaton has 10547 states and 14468 transitions. Word has length 124 [2022-01-10 13:44:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:44:02,323 INFO L470 AbstractCegarLoop]: Abstraction has 10547 states and 14468 transitions. [2022-01-10 13:44:02,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:02,323 INFO L276 IsEmpty]: Start isEmpty. Operand 10547 states and 14468 transitions. [2022-01-10 13:44:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 13:44:02,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:44:02,327 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:02,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:44:02,327 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:44:02,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:44:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash -858880914, now seen corresponding path program 1 times [2022-01-10 13:44:02,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:44:02,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926390692] [2022-01-10 13:44:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:44:02,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:44:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:44:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:44:02,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:44:02,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926390692] [2022-01-10 13:44:02,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926390692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:44:02,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:44:02,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:44:02,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019347790] [2022-01-10 13:44:02,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:44:02,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:44:02,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:44:02,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:44:02,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:44:02,357 INFO L87 Difference]: Start difference. First operand 10547 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:02,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:44:02,996 INFO L93 Difference]: Finished difference Result 26816 states and 34670 transitions. [2022-01-10 13:44:02,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:44:02,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 13:44:02,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:44:03,017 INFO L225 Difference]: With dead ends: 26816 [2022-01-10 13:44:03,017 INFO L226 Difference]: Without dead ends: 18454 [2022-01-10 13:44:03,029 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 13:44:03,030 INFO L933 BasicCegarLoop]: 4619 mSDtfsCounter, 4418 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:44:03,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 5128 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:44:03,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18454 states. [2022-01-10 13:44:03,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18454 to 18164. [2022-01-10 13:44:03,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18164 states, 18162 states have (on average 1.3104283669199428) internal successors, (23800), 18163 states have internal predecessors, (23800), 0 states have call successors, (0), 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 13:44:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18164 states to 18164 states and 23800 transitions. [2022-01-10 13:44:03,672 INFO L78 Accepts]: Start accepts. Automaton has 18164 states and 23800 transitions. Word has length 125 [2022-01-10 13:44:03,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:44:03,673 INFO L470 AbstractCegarLoop]: Abstraction has 18164 states and 23800 transitions. [2022-01-10 13:44:03,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:03,673 INFO L276 IsEmpty]: Start isEmpty. Operand 18164 states and 23800 transitions. [2022-01-10 13:44:03,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 13:44:03,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:44:03,679 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:03,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:44:03,679 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:44:03,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:44:03,680 INFO L85 PathProgramCache]: Analyzing trace with hash 38033487, now seen corresponding path program 1 times [2022-01-10 13:44:03,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:44:03,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394152637] [2022-01-10 13:44:03,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:44:03,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:44:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:44:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:44:03,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:44:03,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394152637] [2022-01-10 13:44:03,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394152637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:44:03,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:44:03,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:44:03,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385088127] [2022-01-10 13:44:03,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:44:03,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:44:03,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:44:03,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:44:03,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:44:03,700 INFO L87 Difference]: Start difference. First operand 18164 states and 23800 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 13:44:04,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:44:04,306 INFO L93 Difference]: Finished difference Result 30318 states and 38834 transitions. [2022-01-10 13:44:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:44:04,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 13:44:04,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:44:04,324 INFO L225 Difference]: With dead ends: 30318 [2022-01-10 13:44:04,324 INFO L226 Difference]: Without dead ends: 14313 [2022-01-10 13:44:04,337 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 13:44:04,338 INFO L933 BasicCegarLoop]: 4493 mSDtfsCounter, 530 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 8451 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:44:04,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 8451 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:44:04,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14313 states. [2022-01-10 13:44:04,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14313 to 14313. [2022-01-10 13:44:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14313 states, 14311 states have (on average 1.3300957305569143) internal successors, (19035), 14312 states have internal predecessors, (19035), 0 states have call successors, (0), 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 13:44:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14313 states to 14313 states and 19035 transitions. [2022-01-10 13:44:04,848 INFO L78 Accepts]: Start accepts. Automaton has 14313 states and 19035 transitions. Word has length 125 [2022-01-10 13:44:04,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:44:04,848 INFO L470 AbstractCegarLoop]: Abstraction has 14313 states and 19035 transitions. [2022-01-10 13:44:04,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 13:44:04,849 INFO L276 IsEmpty]: Start isEmpty. Operand 14313 states and 19035 transitions. [2022-01-10 13:44:04,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 13:44:04,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:44:04,852 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:04,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:44:04,852 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:44:04,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:44:04,853 INFO L85 PathProgramCache]: Analyzing trace with hash 601273385, now seen corresponding path program 1 times [2022-01-10 13:44:04,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:44:04,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902667279] [2022-01-10 13:44:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:44:04,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:44:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:44:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:44:04,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:44:04,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902667279] [2022-01-10 13:44:04,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902667279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:44:04,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:44:04,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:44:04,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411554594] [2022-01-10 13:44:04,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:44:04,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:44:04,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:44:04,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:44:04,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:44:04,881 INFO L87 Difference]: Start difference. First operand 14313 states and 19035 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 13:44:05,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:44:05,859 INFO L93 Difference]: Finished difference Result 37129 states and 47171 transitions. [2022-01-10 13:44:05,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:44:05,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-10 13:44:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:44:05,893 INFO L225 Difference]: With dead ends: 37129 [2022-01-10 13:44:05,893 INFO L226 Difference]: Without dead ends: 25001 [2022-01-10 13:44:05,911 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 13:44:05,919 INFO L933 BasicCegarLoop]: 4641 mSDtfsCounter, 4418 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 5148 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:44:05,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4418 Valid, 5148 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:44:05,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25001 states. [2022-01-10 13:44:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25001 to 24327. [2022-01-10 13:44:06,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24327 states, 24325 states have (on average 1.2857965056526208) internal successors, (31277), 24326 states have internal predecessors, (31277), 0 states have call successors, (0), 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 13:44:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24327 states to 24327 states and 31277 transitions. [2022-01-10 13:44:06,901 INFO L78 Accepts]: Start accepts. Automaton has 24327 states and 31277 transitions. Word has length 126 [2022-01-10 13:44:06,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:44:06,901 INFO L470 AbstractCegarLoop]: Abstraction has 24327 states and 31277 transitions. [2022-01-10 13:44:06,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 13:44:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 24327 states and 31277 transitions. [2022-01-10 13:44:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 13:44:06,907 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:44:06,908 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:06,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:44:06,908 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:44:06,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:44:06,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1938805690, now seen corresponding path program 1 times [2022-01-10 13:44:06,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:44:06,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20744266] [2022-01-10 13:44:06,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:44:06,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:44:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:44:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:44:06,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:44:06,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20744266] [2022-01-10 13:44:06,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20744266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:44:06,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:44:06,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:44:06,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269794852] [2022-01-10 13:44:06,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:44:06,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:44:06,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:44:06,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:44:06,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:44:06,932 INFO L87 Difference]: Start difference. First operand 24327 states and 31277 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:07,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:44:07,943 INFO L93 Difference]: Finished difference Result 46432 states and 58482 transitions. [2022-01-10 13:44:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:44:07,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-10 13:44:07,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:44:07,977 INFO L225 Difference]: With dead ends: 46432 [2022-01-10 13:44:07,977 INFO L226 Difference]: Without dead ends: 24271 [2022-01-10 13:44:07,999 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 13:44:07,999 INFO L933 BasicCegarLoop]: 4492 mSDtfsCounter, 528 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 8450 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:44:07,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 8450 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:44:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24271 states. [2022-01-10 13:44:09,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24271 to 24271. [2022-01-10 13:44:09,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24271 states, 24269 states have (on average 1.2861675388355516) internal successors, (31214), 24270 states have internal predecessors, (31214), 0 states have call successors, (0), 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 13:44:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24271 states to 24271 states and 31214 transitions. [2022-01-10 13:44:09,199 INFO L78 Accepts]: Start accepts. Automaton has 24271 states and 31214 transitions. Word has length 126 [2022-01-10 13:44:09,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:44:09,199 INFO L470 AbstractCegarLoop]: Abstraction has 24271 states and 31214 transitions. [2022-01-10 13:44:09,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand 24271 states and 31214 transitions. [2022-01-10 13:44:09,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:44:09,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:44:09,206 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:09,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 13:44:09,206 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:44:09,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:44:09,207 INFO L85 PathProgramCache]: Analyzing trace with hash -386128003, now seen corresponding path program 1 times [2022-01-10 13:44:09,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:44:09,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982877357] [2022-01-10 13:44:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:44:09,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:44:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:44:09,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:44:09,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:44:09,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982877357] [2022-01-10 13:44:09,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982877357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:44:09,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:44:09,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:44:09,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682569179] [2022-01-10 13:44:09,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:44:09,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:44:09,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:44:09,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:44:09,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:44:09,244 INFO L87 Difference]: Start difference. First operand 24271 states and 31214 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:11,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:44:11,340 INFO L93 Difference]: Finished difference Result 64498 states and 80668 transitions. [2022-01-10 13:44:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:44:11,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 13:44:11,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:44:11,396 INFO L225 Difference]: With dead ends: 64498 [2022-01-10 13:44:11,396 INFO L226 Difference]: Without dead ends: 42412 [2022-01-10 13:44:11,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:44:11,415 INFO L933 BasicCegarLoop]: 4632 mSDtfsCounter, 4324 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4324 SdHoareTripleChecker+Valid, 5144 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:44:11,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4324 Valid, 5144 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:44:11,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42412 states. [2022-01-10 13:44:13,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42412 to 42410. [2022-01-10 13:44:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42410 states, 42408 states have (on average 1.2583003206942087) internal successors, (53362), 42409 states have internal predecessors, (53362), 0 states have call successors, (0), 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 13:44:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42410 states to 42410 states and 53362 transitions. [2022-01-10 13:44:13,542 INFO L78 Accepts]: Start accepts. Automaton has 42410 states and 53362 transitions. Word has length 127 [2022-01-10 13:44:13,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:44:13,542 INFO L470 AbstractCegarLoop]: Abstraction has 42410 states and 53362 transitions. [2022-01-10 13:44:13,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 42410 states and 53362 transitions. [2022-01-10 13:44:13,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:44:13,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:44:13,553 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:13,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 13:44:13,561 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:44:13,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:44:13,561 INFO L85 PathProgramCache]: Analyzing trace with hash 840117788, now seen corresponding path program 1 times [2022-01-10 13:44:13,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:44:13,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246543125] [2022-01-10 13:44:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:44:13,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:44:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:44:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:44:13,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:44:13,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246543125] [2022-01-10 13:44:13,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246543125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:44:13,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:44:13,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:44:13,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425011618] [2022-01-10 13:44:13,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:44:13,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:44:13,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:44:13,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:44:13,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:44:13,683 INFO L87 Difference]: Start difference. First operand 42410 states and 53362 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 13:44:15,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:44:15,555 INFO L93 Difference]: Finished difference Result 82580 states and 102635 transitions. [2022-01-10 13:44:15,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:44:15,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-01-10 13:44:15,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:44:15,608 INFO L225 Difference]: With dead ends: 82580 [2022-01-10 13:44:15,609 INFO L226 Difference]: Without dead ends: 42355 [2022-01-10 13:44:15,628 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 13:44:15,628 INFO L933 BasicCegarLoop]: 4491 mSDtfsCounter, 526 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 8449 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:44:15,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 8449 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:44:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42355 states. [2022-01-10 13:44:17,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42355 to 42355. [2022-01-10 13:44:17,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42355 states, 42353 states have (on average 1.2584940854248814) internal successors, (53301), 42354 states have internal predecessors, (53301), 0 states have call successors, (0), 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 13:44:17,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42355 states to 42355 states and 53301 transitions. [2022-01-10 13:44:17,717 INFO L78 Accepts]: Start accepts. Automaton has 42355 states and 53301 transitions. Word has length 127 [2022-01-10 13:44:17,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:44:17,717 INFO L470 AbstractCegarLoop]: Abstraction has 42355 states and 53301 transitions. [2022-01-10 13:44:17,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 13:44:17,717 INFO L276 IsEmpty]: Start isEmpty. Operand 42355 states and 53301 transitions. [2022-01-10 13:44:17,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 13:44:17,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:44:17,726 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:17,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 13:44:17,727 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:44:17,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:44:17,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1501899619, now seen corresponding path program 1 times [2022-01-10 13:44:17,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:44:17,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580319246] [2022-01-10 13:44:17,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:44:17,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:44:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:44:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:44:17,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:44:17,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580319246] [2022-01-10 13:44:17,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580319246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:44:17,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:44:17,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:44:17,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934723963] [2022-01-10 13:44:17,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:44:17,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:44:17,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:44:17,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:44:17,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:44:17,759 INFO L87 Difference]: Start difference. First operand 42355 states and 53301 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:21,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:44:21,516 INFO L93 Difference]: Finished difference Result 118080 states and 145974 transitions. [2022-01-10 13:44:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:44:21,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-10 13:44:21,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:44:21,620 INFO L225 Difference]: With dead ends: 118080 [2022-01-10 13:44:21,620 INFO L226 Difference]: Without dead ends: 77910 [2022-01-10 13:44:21,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:44:21,662 INFO L933 BasicCegarLoop]: 4943 mSDtfsCounter, 449 mSDsluCounter, 4470 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 9413 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:44:21,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 9413 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:44:21,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77910 states. [2022-01-10 13:44:25,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77910 to 77910. [2022-01-10 13:44:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77910 states, 77908 states have (on average 1.2313626328490015) internal successors, (95933), 77909 states have internal predecessors, (95933), 0 states have call successors, (0), 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 13:44:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77910 states to 77910 states and 95933 transitions. [2022-01-10 13:44:25,797 INFO L78 Accepts]: Start accepts. Automaton has 77910 states and 95933 transitions. Word has length 128 [2022-01-10 13:44:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:44:25,798 INFO L470 AbstractCegarLoop]: Abstraction has 77910 states and 95933 transitions. [2022-01-10 13:44:25,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 77910 states and 95933 transitions. [2022-01-10 13:44:25,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 13:44:25,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:44:25,840 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:25,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 13:44:25,840 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:44:25,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:44:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1562361697, now seen corresponding path program 1 times [2022-01-10 13:44:25,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:44:25,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777213982] [2022-01-10 13:44:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:44:25,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:44:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:44:25,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:44:25,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:44:25,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777213982] [2022-01-10 13:44:25,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777213982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:44:25,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:44:25,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:44:25,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731246215] [2022-01-10 13:44:25,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:44:25,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:44:25,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:44:25,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:44:25,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:44:25,875 INFO L87 Difference]: Start difference. First operand 77910 states and 95933 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:31,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:44:31,433 INFO L93 Difference]: Finished difference Result 187344 states and 228665 transitions. [2022-01-10 13:44:31,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:44:31,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2022-01-10 13:44:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:44:31,756 INFO L225 Difference]: With dead ends: 187344 [2022-01-10 13:44:31,756 INFO L226 Difference]: Without dead ends: 111630 [2022-01-10 13:44:31,844 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 13:44:31,845 INFO L933 BasicCegarLoop]: 4482 mSDtfsCounter, 4301 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 4927 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:44:31,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4301 Valid, 4927 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:44:31,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111630 states. [2022-01-10 13:44:37,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111630 to 111244. [2022-01-10 13:44:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111244 states, 111242 states have (on average 1.2194045414501717) internal successors, (135649), 111243 states have internal predecessors, (135649), 0 states have call successors, (0), 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 13:44:37,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111244 states to 111244 states and 135649 transitions. [2022-01-10 13:44:37,931 INFO L78 Accepts]: Start accepts. Automaton has 111244 states and 135649 transitions. Word has length 165 [2022-01-10 13:44:37,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:44:37,931 INFO L470 AbstractCegarLoop]: Abstraction has 111244 states and 135649 transitions. [2022-01-10 13:44:37,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:37,932 INFO L276 IsEmpty]: Start isEmpty. Operand 111244 states and 135649 transitions. [2022-01-10 13:44:37,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 13:44:37,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:44:37,982 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:44:37,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 13:44:37,982 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:44:37,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:44:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1763675689, now seen corresponding path program 1 times [2022-01-10 13:44:37,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:44:37,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36416351] [2022-01-10 13:44:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:44:37,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:44:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:44:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:44:38,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:44:38,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36416351] [2022-01-10 13:44:38,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36416351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:44:38,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:44:38,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:44:38,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214171455] [2022-01-10 13:44:38,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:44:38,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:44:38,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:44:38,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:44:38,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:44:38,025 INFO L87 Difference]: Start difference. First operand 111244 states and 135649 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:44:46,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:44:46,097 INFO L93 Difference]: Finished difference Result 268924 states and 325967 transitions. [2022-01-10 13:44:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:44:46,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2022-01-10 13:44:46,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:44:46,558 INFO L225 Difference]: With dead ends: 268924 [2022-01-10 13:44:46,558 INFO L226 Difference]: Without dead ends: 159888 [2022-01-10 13:44:46,741 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 13:44:46,742 INFO L933 BasicCegarLoop]: 4480 mSDtfsCounter, 4303 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4303 SdHoareTripleChecker+Valid, 4925 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:44:46,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4303 Valid, 4925 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:44:46,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159888 states.