/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:54:19,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:54:19,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:54:19,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:54:19,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:54:19,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:54:19,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:54:19,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:54:19,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:54:19,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:54:19,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:54:19,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:54:19,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:54:19,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:54:19,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:54:19,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:54:19,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:54:19,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:54:19,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:54:19,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:54:19,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:54:19,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:54:19,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:54:19,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:54:19,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:54:19,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:54:19,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:54:19,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:54:19,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:54:19,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:54:19,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:54:19,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:54:19,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:54:19,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:54:19,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:54:19,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:54:19,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:54:19,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:54:19,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:54:19,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:54:19,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:54:19,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:54:19,739 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:54:19,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:54:19,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:54:19,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:54:19,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:54:19,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:54:19,741 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:54:19,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:54:19,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:54:19,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:54:19,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:54:19,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:54:19,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:54:19,742 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:54:19,743 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:54:19,743 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:54:19,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:54:19,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:54:19,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:54:19,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:54:19,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:54:19,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:54:19,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:54:19,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:54:19,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:54:19,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:54:19,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:54:19,745 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:54:19,746 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:54:19,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:54:19,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:54:19,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:54:19,747 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:54:19,747 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:54:19,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:54:19,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:54:19,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:54:19,976 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:54:19,979 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:54:19,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c [2022-01-10 17:54:20,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca30a8caa/6ec10dcaf92f4f06bfc5c2443dcc1b1a/FLAG4aa8b519a [2022-01-10 17:54:20,525 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:54:20,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c [2022-01-10 17:54:20,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca30a8caa/6ec10dcaf92f4f06bfc5c2443dcc1b1a/FLAG4aa8b519a [2022-01-10 17:54:21,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca30a8caa/6ec10dcaf92f4f06bfc5c2443dcc1b1a [2022-01-10 17:54:21,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:54:21,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:54:21,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:54:21,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:54:21,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:54:21,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:54:21" (1/1) ... [2022-01-10 17:54:21,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a1cfc9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:21, skipping insertion in model container [2022-01-10 17:54:21,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:54:21" (1/1) ... [2022-01-10 17:54:21,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:54:21,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:54:21,284 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-01-10 17:54:21,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:54:21,577 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:54:21,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:54:21,603 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-01-10 17:54:21,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:54:21,722 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:54:21,730 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-01-10 17:54:21,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:54:21,810 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:54:21,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:21 WrapperNode [2022-01-10 17:54:21,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:54:21,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:54:21,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:54:21,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:54:21,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:21" (1/1) ... [2022-01-10 17:54:21,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:21" (1/1) ... [2022-01-10 17:54:22,057 INFO L137 Inliner]: procedures = 94, calls = 339, calls flagged for inlining = 191, calls inlined = 496, statements flattened = 16018 [2022-01-10 17:54:22,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:54:22,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:54:22,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:54:22,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:54:22,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:21" (1/1) ... [2022-01-10 17:54:22,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:21" (1/1) ... [2022-01-10 17:54:22,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:21" (1/1) ... [2022-01-10 17:54:22,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:21" (1/1) ... [2022-01-10 17:54:22,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:21" (1/1) ... [2022-01-10 17:54:22,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:21" (1/1) ... [2022-01-10 17:54:22,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:21" (1/1) ... [2022-01-10 17:54:22,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:54:22,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:54:22,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:54:22,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:54:22,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:21" (1/1) ... [2022-01-10 17:54:22,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:54:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:54:22,368 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 17:54:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:54:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:54:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:54:22,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:54:22,407 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 17:54:22,600 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:54:22,602 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:54:29,025 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:54:29,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:54:29,065 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:54:29,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:54:29 BoogieIcfgContainer [2022-01-10 17:54:29,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:54:29,072 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:54:29,072 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:54:29,073 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:54:29,076 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:54:29" (1/1) ... [2022-01-10 17:54:30,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:54:30 BasicIcfg [2022-01-10 17:54:30,320 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:54:30,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:54:30,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:54:30,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:54:30,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:54:21" (1/4) ... [2022-01-10 17:54:30,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45131497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:54:30, skipping insertion in model container [2022-01-10 17:54:30,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:54:21" (2/4) ... [2022-01-10 17:54:30,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45131497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:54:30, skipping insertion in model container [2022-01-10 17:54:30,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:54:29" (3/4) ... [2022-01-10 17:54:30,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45131497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:54:30, skipping insertion in model container [2022-01-10 17:54:30,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:54:30" (4/4) ... [2022-01-10 17:54:30,326 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product18.cil.cTransformedIcfg [2022-01-10 17:54:30,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:54:30,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 17:54:30,394 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:54:30,403 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 17:54:30,403 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 17:54:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 4697 states, 4691 states have (on average 1.875506288637817) internal successors, (8798), 4696 states have internal predecessors, (8798), 0 states have call successors, (0), 0 states 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 17:54:30,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 17:54:30,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:30,499 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] [2022-01-10 17:54:30,499 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:30,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2118720141, now seen corresponding path program 1 times [2022-01-10 17:54:30,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:30,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719649994] [2022-01-10 17:54:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:30,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:30,892 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 17:54:30,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:30,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719649994] [2022-01-10 17:54:30,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719649994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:30,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:30,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:30,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198276639] [2022-01-10 17:54:30,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:30,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:30,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:30,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:30,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:30,949 INFO L87 Difference]: Start difference. First operand has 4697 states, 4691 states have (on average 1.875506288637817) internal successors, (8798), 4696 states have internal predecessors, (8798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 17:54:31,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:31,374 INFO L93 Difference]: Finished difference Result 13996 states and 26234 transitions. [2022-01-10 17:54:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:31,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-01-10 17:54:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:31,439 INFO L225 Difference]: With dead ends: 13996 [2022-01-10 17:54:31,440 INFO L226 Difference]: Without dead ends: 9301 [2022-01-10 17:54:31,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:31,465 INFO L933 BasicCegarLoop]: 17431 mSDtfsCounter, 8759 mSDsluCounter, 8665 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8759 SdHoareTripleChecker+Valid, 26096 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:31,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8759 Valid, 26096 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:31,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9301 states. [2022-01-10 17:54:31,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9301 to 4686. [2022-01-10 17:54:31,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4686 states, 4681 states have (on average 1.8743858149967956) internal successors, (8774), 4685 states have internal predecessors, (8774), 0 states have call successors, (0), 0 states 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 17:54:31,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 8774 transitions. [2022-01-10 17:54:31,682 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 8774 transitions. Word has length 46 [2022-01-10 17:54:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:31,682 INFO L470 AbstractCegarLoop]: Abstraction has 4686 states and 8774 transitions. [2022-01-10 17:54:31,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 17:54:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 8774 transitions. [2022-01-10 17:54:31,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 17:54:31,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:31,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:31,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:54:31,687 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:31,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:31,690 INFO L85 PathProgramCache]: Analyzing trace with hash -808571897, now seen corresponding path program 1 times [2022-01-10 17:54:31,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:31,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067817103] [2022-01-10 17:54:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:31,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:31,818 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 17:54:31,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:31,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067817103] [2022-01-10 17:54:31,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067817103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:31,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:31,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:31,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744288462] [2022-01-10 17:54:31,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:31,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:31,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:31,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:31,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:31,828 INFO L87 Difference]: Start difference. First operand 4686 states and 8774 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 17:54:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:32,247 INFO L93 Difference]: Finished difference Result 13901 states and 26042 transitions. [2022-01-10 17:54:32,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:32,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-10 17:54:32,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:32,289 INFO L225 Difference]: With dead ends: 13901 [2022-01-10 17:54:32,289 INFO L226 Difference]: Without dead ends: 9265 [2022-01-10 17:54:32,297 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 17:54:32,298 INFO L933 BasicCegarLoop]: 17294 mSDtfsCounter, 8661 mSDsluCounter, 8605 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8661 SdHoareTripleChecker+Valid, 25899 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:32,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8661 Valid, 25899 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:32,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9265 states. [2022-01-10 17:54:32,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9265 to 4686. [2022-01-10 17:54:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4686 states, 4681 states have (on average 1.869045075838496) internal successors, (8749), 4685 states have internal predecessors, (8749), 0 states have call successors, (0), 0 states 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 17:54:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 8749 transitions. [2022-01-10 17:54:32,453 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 8749 transitions. Word has length 53 [2022-01-10 17:54:32,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:32,454 INFO L470 AbstractCegarLoop]: Abstraction has 4686 states and 8749 transitions. [2022-01-10 17:54:32,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 17:54:32,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 8749 transitions. [2022-01-10 17:54:32,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 17:54:32,457 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:32,457 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] [2022-01-10 17:54:32,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:54:32,457 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:32,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:32,458 INFO L85 PathProgramCache]: Analyzing trace with hash 266492404, now seen corresponding path program 1 times [2022-01-10 17:54:32,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:32,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906776523] [2022-01-10 17:54:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:32,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:32,513 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 17:54:32,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:32,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906776523] [2022-01-10 17:54:32,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906776523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:32,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:32,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:32,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915165901] [2022-01-10 17:54:32,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:32,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:32,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:32,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:32,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:32,515 INFO L87 Difference]: Start difference. First operand 4686 states and 8749 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 17:54:32,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:32,632 INFO L93 Difference]: Finished difference Result 9301 states and 17400 transitions. [2022-01-10 17:54:32,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:32,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 17:54:32,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:32,665 INFO L225 Difference]: With dead ends: 9301 [2022-01-10 17:54:32,665 INFO L226 Difference]: Without dead ends: 4686 [2022-01-10 17:54:32,674 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 17:54:32,678 INFO L933 BasicCegarLoop]: 8730 mSDtfsCounter, 8738 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8738 SdHoareTripleChecker+Valid, 8737 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:32,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8738 Valid, 8737 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:32,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2022-01-10 17:54:32,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 4686. [2022-01-10 17:54:32,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4686 states, 4681 states have (on average 1.868617816705832) internal successors, (8747), 4685 states have internal predecessors, (8747), 0 states have call successors, (0), 0 states 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 17:54:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 8747 transitions. [2022-01-10 17:54:32,804 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 8747 transitions. Word has length 56 [2022-01-10 17:54:32,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:32,804 INFO L470 AbstractCegarLoop]: Abstraction has 4686 states and 8747 transitions. [2022-01-10 17:54:32,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 17:54:32,805 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 8747 transitions. [2022-01-10 17:54:32,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 17:54:32,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:32,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:32,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:54:32,807 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:32,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:32,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1082464538, now seen corresponding path program 1 times [2022-01-10 17:54:32,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:32,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815039892] [2022-01-10 17:54:32,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:32,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:32,893 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 17:54:32,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:32,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815039892] [2022-01-10 17:54:32,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815039892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:32,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:32,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:32,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195015758] [2022-01-10 17:54:32,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:32,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:32,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:32,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:32,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:32,896 INFO L87 Difference]: Start difference. First operand 4686 states and 8747 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:33,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:33,152 INFO L93 Difference]: Finished difference Result 9265 states and 17327 transitions. [2022-01-10 17:54:33,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:33,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 17:54:33,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:33,168 INFO L225 Difference]: With dead ends: 9265 [2022-01-10 17:54:33,168 INFO L226 Difference]: Without dead ends: 4686 [2022-01-10 17:54:33,173 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 17:54:33,179 INFO L933 BasicCegarLoop]: 8652 mSDtfsCounter, 8719 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8719 SdHoareTripleChecker+Valid, 8667 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:33,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8719 Valid, 8667 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2022-01-10 17:54:33,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 4686. [2022-01-10 17:54:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4686 states, 4681 states have (on average 1.8664815210425123) internal successors, (8737), 4685 states have internal predecessors, (8737), 0 states have call successors, (0), 0 states 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 17:54:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 8737 transitions. [2022-01-10 17:54:33,289 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 8737 transitions. Word has length 58 [2022-01-10 17:54:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:33,290 INFO L470 AbstractCegarLoop]: Abstraction has 4686 states and 8737 transitions. [2022-01-10 17:54:33,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:33,291 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 8737 transitions. [2022-01-10 17:54:33,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 17:54:33,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:33,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:33,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:54:33,293 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:33,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:33,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1577560560, now seen corresponding path program 1 times [2022-01-10 17:54:33,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:33,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616493853] [2022-01-10 17:54:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:33,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:33,403 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 17:54:33,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:33,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616493853] [2022-01-10 17:54:33,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616493853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:33,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:33,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:33,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273690251] [2022-01-10 17:54:33,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:33,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:33,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:33,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:33,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:33,405 INFO L87 Difference]: Start difference. First operand 4686 states and 8737 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:33,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:33,655 INFO L93 Difference]: Finished difference Result 11633 states and 21746 transitions. [2022-01-10 17:54:33,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:33,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 17:54:33,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:33,679 INFO L225 Difference]: With dead ends: 11633 [2022-01-10 17:54:33,679 INFO L226 Difference]: Without dead ends: 9298 [2022-01-10 17:54:33,685 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 17:54:33,685 INFO L933 BasicCegarLoop]: 13064 mSDtfsCounter, 8715 mSDsluCounter, 8645 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8715 SdHoareTripleChecker+Valid, 21709 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:33,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8715 Valid, 21709 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9298 states. [2022-01-10 17:54:33,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9298 to 9298. [2022-01-10 17:54:33,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9298 states, 9293 states have (on average 1.8703325083396105) internal successors, (17381), 9297 states have internal predecessors, (17381), 0 states have call successors, (0), 0 states 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 17:54:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9298 states to 9298 states and 17381 transitions. [2022-01-10 17:54:33,924 INFO L78 Accepts]: Start accepts. Automaton has 9298 states and 17381 transitions. Word has length 60 [2022-01-10 17:54:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:33,925 INFO L470 AbstractCegarLoop]: Abstraction has 9298 states and 17381 transitions. [2022-01-10 17:54:33,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 9298 states and 17381 transitions. [2022-01-10 17:54:33,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 17:54:33,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:33,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:33,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:54:33,928 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:33,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:33,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1659713146, now seen corresponding path program 1 times [2022-01-10 17:54:33,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:33,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210735718] [2022-01-10 17:54:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:33,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:34,036 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 17:54:34,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:34,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210735718] [2022-01-10 17:54:34,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210735718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:34,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:34,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:34,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639328758] [2022-01-10 17:54:34,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:34,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:34,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:34,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:34,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:34,039 INFO L87 Difference]: Start difference. First operand 9298 states and 17381 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:34,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:34,397 INFO L93 Difference]: Finished difference Result 23110 states and 43266 transitions. [2022-01-10 17:54:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:34,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 17:54:34,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:34,446 INFO L225 Difference]: With dead ends: 23110 [2022-01-10 17:54:34,446 INFO L226 Difference]: Without dead ends: 18464 [2022-01-10 17:54:34,462 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 17:54:34,463 INFO L933 BasicCegarLoop]: 8734 mSDtfsCounter, 8671 mSDsluCounter, 8648 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8671 SdHoareTripleChecker+Valid, 17382 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:34,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8671 Valid, 17382 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:34,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18464 states. [2022-01-10 17:54:34,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18464 to 18462. [2022-01-10 17:54:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18462 states, 18457 states have (on average 1.872839573061711) internal successors, (34567), 18461 states have internal predecessors, (34567), 0 states have call successors, (0), 0 states 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 17:54:34,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18462 states to 18462 states and 34567 transitions. [2022-01-10 17:54:34,930 INFO L78 Accepts]: Start accepts. Automaton has 18462 states and 34567 transitions. Word has length 61 [2022-01-10 17:54:34,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:34,930 INFO L470 AbstractCegarLoop]: Abstraction has 18462 states and 34567 transitions. [2022-01-10 17:54:34,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:34,931 INFO L276 IsEmpty]: Start isEmpty. Operand 18462 states and 34567 transitions. [2022-01-10 17:54:34,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 17:54:34,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:34,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:34,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:54:34,937 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:34,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:34,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1157574234, now seen corresponding path program 1 times [2022-01-10 17:54:34,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:34,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402343206] [2022-01-10 17:54:34,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:34,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:35,044 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 17:54:35,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:35,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402343206] [2022-01-10 17:54:35,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402343206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:35,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:35,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:35,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253939046] [2022-01-10 17:54:35,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:35,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:35,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:35,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:35,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:35,047 INFO L87 Difference]: Start difference. First operand 18462 states and 34567 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:37,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:37,046 INFO L93 Difference]: Finished difference Result 109988 states and 206197 transitions. [2022-01-10 17:54:37,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 17:54:37,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 17:54:37,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:37,350 INFO L225 Difference]: With dead ends: 109988 [2022-01-10 17:54:37,351 INFO L226 Difference]: Without dead ends: 91555 [2022-01-10 17:54:37,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:54:37,409 INFO L933 BasicCegarLoop]: 34495 mSDtfsCounter, 25912 mSDsluCounter, 43128 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25912 SdHoareTripleChecker+Valid, 77623 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:37,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25912 Valid, 77623 Invalid, 65 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:37,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91555 states. [2022-01-10 17:54:38,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91555 to 18450. [2022-01-10 17:54:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18450 states, 18445 states have (on average 1.8731905665492004) internal successors, (34551), 18449 states have internal predecessors, (34551), 0 states have call successors, (0), 0 states 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 17:54:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18450 states to 18450 states and 34551 transitions. [2022-01-10 17:54:38,759 INFO L78 Accepts]: Start accepts. Automaton has 18450 states and 34551 transitions. Word has length 61 [2022-01-10 17:54:38,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:38,760 INFO L470 AbstractCegarLoop]: Abstraction has 18450 states and 34551 transitions. [2022-01-10 17:54:38,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:38,760 INFO L276 IsEmpty]: Start isEmpty. Operand 18450 states and 34551 transitions. [2022-01-10 17:54:38,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 17:54:38,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:38,765 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] [2022-01-10 17:54:38,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:54:38,765 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:38,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:38,766 INFO L85 PathProgramCache]: Analyzing trace with hash 724291997, now seen corresponding path program 1 times [2022-01-10 17:54:38,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:38,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218811817] [2022-01-10 17:54:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:38,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:38,835 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 17:54:38,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:38,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218811817] [2022-01-10 17:54:38,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218811817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:38,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:38,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:38,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410808533] [2022-01-10 17:54:38,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:38,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:38,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:38,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:38,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:38,838 INFO L87 Difference]: Start difference. First operand 18450 states and 34551 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:40,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:40,093 INFO L93 Difference]: Finished difference Result 73512 states and 137754 transitions. [2022-01-10 17:54:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:40,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 17:54:40,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:40,219 INFO L225 Difference]: With dead ends: 73512 [2022-01-10 17:54:40,219 INFO L226 Difference]: Without dead ends: 55085 [2022-01-10 17:54:40,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:40,269 INFO L933 BasicCegarLoop]: 8729 mSDtfsCounter, 25961 mSDsluCounter, 25911 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25961 SdHoareTripleChecker+Valid, 34640 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:40,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25961 Valid, 34640 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:40,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55085 states. [2022-01-10 17:54:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55085 to 18458. [2022-01-10 17:54:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18458 states, 18453 states have (on average 1.872649433696418) internal successors, (34556), 18457 states have internal predecessors, (34556), 0 states have call successors, (0), 0 states 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 17:54:41,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18458 states to 18458 states and 34556 transitions. [2022-01-10 17:54:41,198 INFO L78 Accepts]: Start accepts. Automaton has 18458 states and 34556 transitions. Word has length 63 [2022-01-10 17:54:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:41,199 INFO L470 AbstractCegarLoop]: Abstraction has 18458 states and 34556 transitions. [2022-01-10 17:54:41,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 18458 states and 34556 transitions. [2022-01-10 17:54:41,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 17:54:41,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:41,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:41,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:54:41,208 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:41,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:41,209 INFO L85 PathProgramCache]: Analyzing trace with hash -677076921, now seen corresponding path program 1 times [2022-01-10 17:54:41,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:41,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153438704] [2022-01-10 17:54:41,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:41,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:41,335 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 17:54:41,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:41,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153438704] [2022-01-10 17:54:41,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153438704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:41,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:41,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:54:41,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789332905] [2022-01-10 17:54:41,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:41,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:54:41,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:41,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:54:41,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:41,341 INFO L87 Difference]: Start difference. First operand 18458 states and 34556 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:43,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:43,135 INFO L93 Difference]: Finished difference Result 91717 states and 171907 transitions. [2022-01-10 17:54:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:43,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 17:54:43,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:43,301 INFO L225 Difference]: With dead ends: 91717 [2022-01-10 17:54:43,301 INFO L226 Difference]: Without dead ends: 73275 [2022-01-10 17:54:43,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:43,335 INFO L933 BasicCegarLoop]: 34463 mSDtfsCounter, 51941 mSDsluCounter, 34464 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51941 SdHoareTripleChecker+Valid, 68927 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:43,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51941 Valid, 68927 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:43,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73275 states. [2022-01-10 17:54:44,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73275 to 18450. [2022-01-10 17:54:44,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18450 states, 18445 states have (on average 1.8727026294388722) internal successors, (34542), 18449 states have internal predecessors, (34542), 0 states have call successors, (0), 0 states 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 17:54:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18450 states to 18450 states and 34542 transitions. [2022-01-10 17:54:44,335 INFO L78 Accepts]: Start accepts. Automaton has 18450 states and 34542 transitions. Word has length 64 [2022-01-10 17:54:44,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:44,335 INFO L470 AbstractCegarLoop]: Abstraction has 18450 states and 34542 transitions. [2022-01-10 17:54:44,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:44,335 INFO L276 IsEmpty]: Start isEmpty. Operand 18450 states and 34542 transitions. [2022-01-10 17:54:44,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 17:54:44,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:44,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:44,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:54:44,339 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:44,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:44,340 INFO L85 PathProgramCache]: Analyzing trace with hash -847284011, now seen corresponding path program 1 times [2022-01-10 17:54:44,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:44,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965844572] [2022-01-10 17:54:44,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:44,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:44,597 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 17:54:44,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:44,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965844572] [2022-01-10 17:54:44,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965844572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:44,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:44,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:44,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534550942] [2022-01-10 17:54:44,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:44,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:44,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:44,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:44,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:44,599 INFO L87 Difference]: Start difference. First operand 18450 states and 34542 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:45,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:45,995 INFO L93 Difference]: Finished difference Result 73317 states and 137419 transitions. [2022-01-10 17:54:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:45,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 17:54:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:46,083 INFO L225 Difference]: With dead ends: 73317 [2022-01-10 17:54:46,083 INFO L226 Difference]: Without dead ends: 54914 [2022-01-10 17:54:46,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:54:46,104 INFO L933 BasicCegarLoop]: 8666 mSDtfsCounter, 34493 mSDsluCounter, 25758 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34493 SdHoareTripleChecker+Valid, 34424 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:46,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34493 Valid, 34424 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:46,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54914 states. [2022-01-10 17:54:46,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54914 to 18476. [2022-01-10 17:54:46,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18476 states, 18471 states have (on average 1.872123869850035) internal successors, (34580), 18475 states have internal predecessors, (34580), 0 states have call successors, (0), 0 states 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 17:54:46,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18476 states to 18476 states and 34580 transitions. [2022-01-10 17:54:46,993 INFO L78 Accepts]: Start accepts. Automaton has 18476 states and 34580 transitions. Word has length 65 [2022-01-10 17:54:46,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:46,994 INFO L470 AbstractCegarLoop]: Abstraction has 18476 states and 34580 transitions. [2022-01-10 17:54:46,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:46,994 INFO L276 IsEmpty]: Start isEmpty. Operand 18476 states and 34580 transitions. [2022-01-10 17:54:46,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 17:54:46,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:46,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:46,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 17:54:46,999 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:46,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:46,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1575117147, now seen corresponding path program 1 times [2022-01-10 17:54:46,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:47,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719282417] [2022-01-10 17:54:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:47,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:47,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:47,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719282417] [2022-01-10 17:54:47,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719282417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:47,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:47,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:47,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605660662] [2022-01-10 17:54:47,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:47,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:47,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:47,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:47,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:47,076 INFO L87 Difference]: Start difference. First operand 18476 states and 34580 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:48,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:48,266 INFO L93 Difference]: Finished difference Result 41338 states and 77441 transitions. [2022-01-10 17:54:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:54:48,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 17:54:48,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:48,305 INFO L225 Difference]: With dead ends: 41338 [2022-01-10 17:54:48,305 INFO L226 Difference]: Without dead ends: 27503 [2022-01-10 17:54:48,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:48,320 INFO L933 BasicCegarLoop]: 8659 mSDtfsCounter, 25783 mSDsluCounter, 8647 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25783 SdHoareTripleChecker+Valid, 17306 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:48,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25783 Valid, 17306 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27503 states. [2022-01-10 17:54:48,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27503 to 18396. [2022-01-10 17:54:48,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18396 states, 18391 states have (on average 1.872926975150889) internal successors, (34445), 18395 states have internal predecessors, (34445), 0 states have call successors, (0), 0 states 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 17:54:48,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18396 states to 18396 states and 34445 transitions. [2022-01-10 17:54:48,980 INFO L78 Accepts]: Start accepts. Automaton has 18396 states and 34445 transitions. Word has length 67 [2022-01-10 17:54:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:48,981 INFO L470 AbstractCegarLoop]: Abstraction has 18396 states and 34445 transitions. [2022-01-10 17:54:48,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:48,981 INFO L276 IsEmpty]: Start isEmpty. Operand 18396 states and 34445 transitions. [2022-01-10 17:54:48,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 17:54:48,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:48,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:48,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 17:54:48,986 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:48,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:48,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1968191204, now seen corresponding path program 1 times [2022-01-10 17:54:48,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:48,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584622142] [2022-01-10 17:54:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:48,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:49,066 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 17:54:49,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:49,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584622142] [2022-01-10 17:54:49,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584622142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:49,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:49,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:49,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019384430] [2022-01-10 17:54:49,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:49,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:49,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:49,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:49,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:49,068 INFO L87 Difference]: Start difference. First operand 18396 states and 34445 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:49,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:49,410 INFO L93 Difference]: Finished difference Result 27539 states and 51583 transitions. [2022-01-10 17:54:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:49,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 17:54:49,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:49,423 INFO L225 Difference]: With dead ends: 27539 [2022-01-10 17:54:49,423 INFO L226 Difference]: Without dead ends: 9244 [2022-01-10 17:54:49,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:49,438 INFO L933 BasicCegarLoop]: 8665 mSDtfsCounter, 17241 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17241 SdHoareTripleChecker+Valid, 8743 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:49,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17241 Valid, 8743 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:49,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9244 states. [2022-01-10 17:54:49,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9244 to 9244. [2022-01-10 17:54:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9244 states, 9240 states have (on average 1.8705627705627705) internal successors, (17284), 9243 states have internal predecessors, (17284), 0 states have call successors, (0), 0 states 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 17:54:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9244 states to 9244 states and 17284 transitions. [2022-01-10 17:54:49,928 INFO L78 Accepts]: Start accepts. Automaton has 9244 states and 17284 transitions. Word has length 68 [2022-01-10 17:54:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:49,928 INFO L470 AbstractCegarLoop]: Abstraction has 9244 states and 17284 transitions. [2022-01-10 17:54:49,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 9244 states and 17284 transitions. [2022-01-10 17:54:49,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 17:54:49,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:49,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:49,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 17:54:49,932 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:49,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1116668255, now seen corresponding path program 1 times [2022-01-10 17:54:49,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:49,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538585741] [2022-01-10 17:54:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:49,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:49,991 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 17:54:49,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:49,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538585741] [2022-01-10 17:54:49,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538585741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:49,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:49,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:49,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026711943] [2022-01-10 17:54:49,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:49,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:49,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:49,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:49,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:49,993 INFO L87 Difference]: Start difference. First operand 9244 states and 17284 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:50,454 INFO L93 Difference]: Finished difference Result 18375 states and 34402 transitions. [2022-01-10 17:54:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:54:50,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 17:54:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:50,465 INFO L225 Difference]: With dead ends: 18375 [2022-01-10 17:54:50,465 INFO L226 Difference]: Without dead ends: 9232 [2022-01-10 17:54:50,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:50,470 INFO L933 BasicCegarLoop]: 8647 mSDtfsCounter, 17212 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17212 SdHoareTripleChecker+Valid, 8738 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:50,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17212 Valid, 8738 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:50,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9232 states. [2022-01-10 17:54:50,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9232 to 9232. [2022-01-10 17:54:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9232 states, 9228 states have (on average 1.8706111833550065) internal successors, (17262), 9231 states have internal predecessors, (17262), 0 states have call successors, (0), 0 states 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 17:54:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9232 states to 9232 states and 17262 transitions. [2022-01-10 17:54:50,754 INFO L78 Accepts]: Start accepts. Automaton has 9232 states and 17262 transitions. Word has length 70 [2022-01-10 17:54:50,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:50,754 INFO L470 AbstractCegarLoop]: Abstraction has 9232 states and 17262 transitions. [2022-01-10 17:54:50,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 9232 states and 17262 transitions. [2022-01-10 17:54:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 17:54:50,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:50,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:50,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 17:54:50,758 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:50,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:50,758 INFO L85 PathProgramCache]: Analyzing trace with hash 690163579, now seen corresponding path program 1 times [2022-01-10 17:54:50,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:50,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890512208] [2022-01-10 17:54:50,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:50,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:50,833 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 17:54:50,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:50,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890512208] [2022-01-10 17:54:50,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890512208] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:50,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:50,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 17:54:50,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111330405] [2022-01-10 17:54:50,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:50,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:54:50,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:50,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:54:50,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:54:50,835 INFO L87 Difference]: Start difference. First operand 9232 states and 17262 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:51,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:51,271 INFO L93 Difference]: Finished difference Result 18401 states and 34432 transitions. [2022-01-10 17:54:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:54:51,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 17:54:51,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:51,354 INFO L225 Difference]: With dead ends: 18401 [2022-01-10 17:54:51,354 INFO L226 Difference]: Without dead ends: 9294 [2022-01-10 17:54:51,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:54:51,360 INFO L933 BasicCegarLoop]: 8673 mSDtfsCounter, 17285 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17285 SdHoareTripleChecker+Valid, 8808 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:51,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17285 Valid, 8808 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:51,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9294 states. [2022-01-10 17:54:51,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9294 to 9232. [2022-01-10 17:54:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9232 states, 9228 states have (on average 1.870394451668834) internal successors, (17260), 9231 states have internal predecessors, (17260), 0 states have call successors, (0), 0 states 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 17:54:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9232 states to 9232 states and 17260 transitions. [2022-01-10 17:54:51,649 INFO L78 Accepts]: Start accepts. Automaton has 9232 states and 17260 transitions. Word has length 70 [2022-01-10 17:54:51,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:51,649 INFO L470 AbstractCegarLoop]: Abstraction has 9232 states and 17260 transitions. [2022-01-10 17:54:51,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:51,650 INFO L276 IsEmpty]: Start isEmpty. Operand 9232 states and 17260 transitions. [2022-01-10 17:54:51,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 17:54:51,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:51,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:51,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 17:54:51,652 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:51,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:51,653 INFO L85 PathProgramCache]: Analyzing trace with hash 671906836, now seen corresponding path program 1 times [2022-01-10 17:54:51,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:51,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957610921] [2022-01-10 17:54:51,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:51,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:51,721 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 17:54:51,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:51,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957610921] [2022-01-10 17:54:51,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957610921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:51,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:51,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 17:54:51,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232339925] [2022-01-10 17:54:51,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:51,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 17:54:51,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:51,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 17:54:51,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:54:51,723 INFO L87 Difference]: Start difference. First operand 9232 states and 17260 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:52,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:52,991 INFO L93 Difference]: Finished difference Result 36641 states and 68626 transitions. [2022-01-10 17:54:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 17:54:52,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 17:54:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:53,036 INFO L225 Difference]: With dead ends: 36641 [2022-01-10 17:54:53,036 INFO L226 Difference]: Without dead ends: 27534 [2022-01-10 17:54:53,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-10 17:54:53,053 INFO L933 BasicCegarLoop]: 8674 mSDtfsCounter, 51527 mSDsluCounter, 25865 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51527 SdHoareTripleChecker+Valid, 34539 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:53,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51527 Valid, 34539 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:53,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27534 states. [2022-01-10 17:54:53,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27534 to 9252. [2022-01-10 17:54:53,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9252 states, 9248 states have (on average 1.8693771626297577) internal successors, (17288), 9251 states have internal predecessors, (17288), 0 states have call successors, (0), 0 states 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 17:54:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9252 states to 9252 states and 17288 transitions. [2022-01-10 17:54:53,457 INFO L78 Accepts]: Start accepts. Automaton has 9252 states and 17288 transitions. Word has length 71 [2022-01-10 17:54:53,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:53,457 INFO L470 AbstractCegarLoop]: Abstraction has 9252 states and 17288 transitions. [2022-01-10 17:54:53,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:53,457 INFO L276 IsEmpty]: Start isEmpty. Operand 9252 states and 17288 transitions. [2022-01-10 17:54:53,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 17:54:53,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:53,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:53,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 17:54:53,460 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:53,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:53,460 INFO L85 PathProgramCache]: Analyzing trace with hash -765139986, now seen corresponding path program 1 times [2022-01-10 17:54:53,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:53,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889023524] [2022-01-10 17:54:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:53,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:53,537 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 17:54:53,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:53,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889023524] [2022-01-10 17:54:53,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889023524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:53,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:53,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:54:53,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462298368] [2022-01-10 17:54:53,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:53,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:54:53,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:53,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:54:53,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:53,540 INFO L87 Difference]: Start difference. First operand 9252 states and 17288 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:55,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:55,917 INFO L93 Difference]: Finished difference Result 54881 states and 102818 transitions. [2022-01-10 17:54:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 17:54:55,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 17:54:55,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:56,043 INFO L225 Difference]: With dead ends: 54881 [2022-01-10 17:54:56,044 INFO L226 Difference]: Without dead ends: 45774 [2022-01-10 17:54:56,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-10 17:54:56,056 INFO L933 BasicCegarLoop]: 17224 mSDtfsCounter, 60076 mSDsluCounter, 51570 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60076 SdHoareTripleChecker+Valid, 68794 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:56,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60076 Valid, 68794 Invalid, 95 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45774 states. [2022-01-10 17:54:56,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45774 to 9274. [2022-01-10 17:54:56,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9274 states, 9270 states have (on average 1.8681769147788565) internal successors, (17318), 9273 states have internal predecessors, (17318), 0 states have call successors, (0), 0 states 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 17:54:56,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9274 states to 9274 states and 17318 transitions. [2022-01-10 17:54:56,526 INFO L78 Accepts]: Start accepts. Automaton has 9274 states and 17318 transitions. Word has length 72 [2022-01-10 17:54:56,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:56,526 INFO L470 AbstractCegarLoop]: Abstraction has 9274 states and 17318 transitions. [2022-01-10 17:54:56,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:56,526 INFO L276 IsEmpty]: Start isEmpty. Operand 9274 states and 17318 transitions. [2022-01-10 17:54:56,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 17:54:56,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:56,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:56,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 17:54:56,529 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:56,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash 407212631, now seen corresponding path program 1 times [2022-01-10 17:54:56,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:56,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966503623] [2022-01-10 17:54:56,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:56,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:56,608 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 17:54:56,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:56,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966503623] [2022-01-10 17:54:56,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966503623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:56,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:56,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:56,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233021647] [2022-01-10 17:54:56,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:56,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:56,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:56,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:56,610 INFO L87 Difference]: Start difference. First operand 9274 states and 17318 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:57,337 INFO L93 Difference]: Finished difference Result 16252 states and 30348 transitions. [2022-01-10 17:54:57,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:57,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 17:54:57,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:57,348 INFO L225 Difference]: With dead ends: 16252 [2022-01-10 17:54:57,348 INFO L226 Difference]: Without dead ends: 9304 [2022-01-10 17:54:57,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:57,352 INFO L933 BasicCegarLoop]: 8621 mSDtfsCounter, 8774 mSDsluCounter, 8621 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8774 SdHoareTripleChecker+Valid, 17242 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:57,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8774 Valid, 17242 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9304 states. [2022-01-10 17:54:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 9271. [2022-01-10 17:54:57,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9271 states, 9267 states have (on average 1.8673788712636237) internal successors, (17305), 9270 states have internal predecessors, (17305), 0 states have call successors, (0), 0 states 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 17:54:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9271 states to 9271 states and 17305 transitions. [2022-01-10 17:54:57,763 INFO L78 Accepts]: Start accepts. Automaton has 9271 states and 17305 transitions. Word has length 72 [2022-01-10 17:54:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:57,764 INFO L470 AbstractCegarLoop]: Abstraction has 9271 states and 17305 transitions. [2022-01-10 17:54:57,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 9271 states and 17305 transitions. [2022-01-10 17:54:57,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 17:54:57,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:57,766 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] [2022-01-10 17:54:57,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 17:54:57,766 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:57,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:57,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1707760476, now seen corresponding path program 1 times [2022-01-10 17:54:57,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:57,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133007791] [2022-01-10 17:54:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:57,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:57,833 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 17:54:57,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:57,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133007791] [2022-01-10 17:54:57,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133007791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:57,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:57,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:57,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767344964] [2022-01-10 17:54:57,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:57,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:57,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:57,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:57,835 INFO L87 Difference]: Start difference. First operand 9271 states and 17305 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:59,913 INFO L93 Difference]: Finished difference Result 23708 states and 44271 transitions. [2022-01-10 17:54:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:54:59,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 17:54:59,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:59,934 INFO L225 Difference]: With dead ends: 23708 [2022-01-10 17:54:59,934 INFO L226 Difference]: Without dead ends: 17977 [2022-01-10 17:54:59,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:54:59,938 INFO L933 BasicCegarLoop]: 8437 mSDtfsCounter, 19408 mSDsluCounter, 28640 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19408 SdHoareTripleChecker+Valid, 37077 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:59,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19408 Valid, 37077 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 17:54:59,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17977 states. [2022-01-10 17:55:00,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17977 to 12711. [2022-01-10 17:55:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12711 states, 12707 states have (on average 1.849138270244747) internal successors, (23497), 12710 states have internal predecessors, (23497), 0 states have call successors, (0), 0 states 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 17:55:00,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 23497 transitions. [2022-01-10 17:55:00,564 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 23497 transitions. Word has length 73 [2022-01-10 17:55:00,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:00,565 INFO L470 AbstractCegarLoop]: Abstraction has 12711 states and 23497 transitions. [2022-01-10 17:55:00,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:00,565 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 23497 transitions. [2022-01-10 17:55:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 17:55:00,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:00,567 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] [2022-01-10 17:55:00,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 17:55:00,567 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1181624239, now seen corresponding path program 1 times [2022-01-10 17:55:00,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:00,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143865372] [2022-01-10 17:55:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:00,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:00,741 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 17:55:00,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:00,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143865372] [2022-01-10 17:55:00,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143865372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:00,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:00,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:55:00,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642260082] [2022-01-10 17:55:00,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:00,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:55:00,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:00,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:55:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:00,743 INFO L87 Difference]: Start difference. First operand 12711 states and 23497 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:02,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:02,504 INFO L93 Difference]: Finished difference Result 21307 states and 39479 transitions. [2022-01-10 17:55:02,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:55:02,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 17:55:02,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:02,529 INFO L225 Difference]: With dead ends: 21307 [2022-01-10 17:55:02,530 INFO L226 Difference]: Without dead ends: 21288 [2022-01-10 17:55:02,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:55:02,535 INFO L933 BasicCegarLoop]: 8066 mSDtfsCounter, 20964 mSDsluCounter, 16125 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20964 SdHoareTripleChecker+Valid, 24191 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:02,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20964 Valid, 24191 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:02,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21288 states. [2022-01-10 17:55:03,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21288 to 12723. [2022-01-10 17:55:03,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12723 states, 12719 states have (on average 1.8483371334224388) internal successors, (23509), 12722 states have internal predecessors, (23509), 0 states have call successors, (0), 0 states 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 17:55:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12723 states to 12723 states and 23509 transitions. [2022-01-10 17:55:03,273 INFO L78 Accepts]: Start accepts. Automaton has 12723 states and 23509 transitions. Word has length 74 [2022-01-10 17:55:03,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:03,274 INFO L470 AbstractCegarLoop]: Abstraction has 12723 states and 23509 transitions. [2022-01-10 17:55:03,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:03,274 INFO L276 IsEmpty]: Start isEmpty. Operand 12723 states and 23509 transitions. [2022-01-10 17:55:03,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 17:55:03,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:03,276 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] [2022-01-10 17:55:03,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 17:55:03,276 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:03,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:03,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1381016301, now seen corresponding path program 1 times [2022-01-10 17:55:03,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:03,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927356607] [2022-01-10 17:55:03,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:03,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:03,367 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 17:55:03,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:03,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927356607] [2022-01-10 17:55:03,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927356607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:03,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:03,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:55:03,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790766378] [2022-01-10 17:55:03,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:03,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:55:03,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:55:03,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:55:03,369 INFO L87 Difference]: Start difference. First operand 12723 states and 23509 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 17:55:04,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:04,849 INFO L93 Difference]: Finished difference Result 32969 states and 61345 transitions. [2022-01-10 17:55:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:55:04,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-10 17:55:04,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:04,878 INFO L225 Difference]: With dead ends: 32969 [2022-01-10 17:55:04,878 INFO L226 Difference]: Without dead ends: 24366 [2022-01-10 17:55:04,883 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 17:55:04,884 INFO L933 BasicCegarLoop]: 8018 mSDtfsCounter, 7916 mSDsluCounter, 7285 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7916 SdHoareTripleChecker+Valid, 15303 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:04,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7916 Valid, 15303 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:55:04,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24366 states. [2022-01-10 17:55:05,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24366 to 18355. [2022-01-10 17:55:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18355 states, 18351 states have (on average 1.8520516593101193) internal successors, (33987), 18354 states have internal predecessors, (33987), 0 states have call successors, (0), 0 states 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 17:55:05,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18355 states to 18355 states and 33987 transitions. [2022-01-10 17:55:05,958 INFO L78 Accepts]: Start accepts. Automaton has 18355 states and 33987 transitions. Word has length 76 [2022-01-10 17:55:05,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:05,959 INFO L470 AbstractCegarLoop]: Abstraction has 18355 states and 33987 transitions. [2022-01-10 17:55:05,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states 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 17:55:05,959 INFO L276 IsEmpty]: Start isEmpty. Operand 18355 states and 33987 transitions. [2022-01-10 17:55:05,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 17:55:05,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:05,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:05,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 17:55:05,964 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:05,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:05,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1656284204, now seen corresponding path program 1 times [2022-01-10 17:55:05,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:05,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205753348] [2022-01-10 17:55:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:05,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:06,027 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 17:55:06,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:06,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205753348] [2022-01-10 17:55:06,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205753348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:06,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:06,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:55:06,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298554866] [2022-01-10 17:55:06,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:06,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:55:06,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:06,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:55:06,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:06,029 INFO L87 Difference]: Start difference. First operand 18355 states and 33987 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 17:55:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:07,633 INFO L93 Difference]: Finished difference Result 36348 states and 66827 transitions. [2022-01-10 17:55:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:55:07,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-10 17:55:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:07,658 INFO L225 Difference]: With dead ends: 36348 [2022-01-10 17:55:07,658 INFO L226 Difference]: Without dead ends: 20701 [2022-01-10 17:55:07,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:55:07,671 INFO L933 BasicCegarLoop]: 9412 mSDtfsCounter, 14048 mSDsluCounter, 9436 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14048 SdHoareTripleChecker+Valid, 18848 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:07,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14048 Valid, 18848 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:55:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20701 states. [2022-01-10 17:55:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20701 to 15595. [2022-01-10 17:55:08,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15595 states, 15591 states have (on average 1.8338143800910782) internal successors, (28591), 15594 states have internal predecessors, (28591), 0 states have call successors, (0), 0 states 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 17:55:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15595 states to 15595 states and 28591 transitions. [2022-01-10 17:55:08,802 INFO L78 Accepts]: Start accepts. Automaton has 15595 states and 28591 transitions. Word has length 90 [2022-01-10 17:55:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:08,802 INFO L470 AbstractCegarLoop]: Abstraction has 15595 states and 28591 transitions. [2022-01-10 17:55:08,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 17:55:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 15595 states and 28591 transitions. [2022-01-10 17:55:08,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 17:55:08,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:08,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:08,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 17:55:08,805 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:08,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:08,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1102510818, now seen corresponding path program 1 times [2022-01-10 17:55:08,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:08,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591313423] [2022-01-10 17:55:08,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:08,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:08,858 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 17:55:08,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:08,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591313423] [2022-01-10 17:55:08,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591313423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:08,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:08,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:55:08,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527190525] [2022-01-10 17:55:08,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:08,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:55:08,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:55:08,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:55:08,860 INFO L87 Difference]: Start difference. First operand 15595 states and 28591 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:10,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:10,392 INFO L93 Difference]: Finished difference Result 36100 states and 66363 transitions. [2022-01-10 17:55:10,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:55:10,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-01-10 17:55:10,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:10,432 INFO L225 Difference]: With dead ends: 36100 [2022-01-10 17:55:10,432 INFO L226 Difference]: Without dead ends: 25547 [2022-01-10 17:55:10,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:10,445 INFO L933 BasicCegarLoop]: 6415 mSDtfsCounter, 14343 mSDsluCounter, 8036 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14343 SdHoareTripleChecker+Valid, 14451 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:10,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14343 Valid, 14451 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:55:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25547 states. [2022-01-10 17:55:11,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25547 to 15623. [2022-01-10 17:55:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15623 states, 15619 states have (on average 1.8323196107305204) internal successors, (28619), 15622 states have internal predecessors, (28619), 0 states have call successors, (0), 0 states 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 17:55:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15623 states to 15623 states and 28619 transitions. [2022-01-10 17:55:11,584 INFO L78 Accepts]: Start accepts. Automaton has 15623 states and 28619 transitions. Word has length 91 [2022-01-10 17:55:11,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:55:11,585 INFO L470 AbstractCegarLoop]: Abstraction has 15623 states and 28619 transitions. [2022-01-10 17:55:11,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:55:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 15623 states and 28619 transitions. [2022-01-10 17:55:11,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 17:55:11,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:55:11,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:55:11,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 17:55:11,588 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:55:11,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:55:11,589 INFO L85 PathProgramCache]: Analyzing trace with hash -925788596, now seen corresponding path program 1 times [2022-01-10 17:55:11,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:55:11,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893497446] [2022-01-10 17:55:11,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:55:11,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:55:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:55:11,666 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 17:55:11,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:55:11,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893497446] [2022-01-10 17:55:11,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893497446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:55:11,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:55:11,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:55:11,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368247277] [2022-01-10 17:55:11,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:55:11,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:55:11,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:55:11,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:55:11,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:55:11,668 INFO L87 Difference]: Start difference. First operand 15623 states and 28619 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 17:55:14,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:55:14,254 INFO L93 Difference]: Finished difference Result 32243 states and 58825 transitions. [2022-01-10 17:55:14,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:55:14,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-10 17:55:14,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:55:14,280 INFO L225 Difference]: With dead ends: 32243 [2022-01-10 17:55:14,281 INFO L226 Difference]: Without dead ends: 22636 [2022-01-10 17:55:14,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:55:14,287 INFO L933 BasicCegarLoop]: 6300 mSDtfsCounter, 4647 mSDsluCounter, 12047 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4647 SdHoareTripleChecker+Valid, 18347 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:55:14,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4647 Valid, 18347 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 17:55:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22636 states.