/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_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec14_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:43:07,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:43:07,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:43:07,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:43:07,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:43:07,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:43:07,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:43:07,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:43:07,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:43:07,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:43:07,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:43:07,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:43:07,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:43:07,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:43:07,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:43:07,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:43:07,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:43:07,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:43:07,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:43:07,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:43:07,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:43:07,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:43:07,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:43:07,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:43:07,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:43:07,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:43:07,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:43:07,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:43:07,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:43:07,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:43:07,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:43:07,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:43:07,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:43:07,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:43:07,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:43:07,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:43:07,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:43:07,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:43:07,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:43:07,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:43:07,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:43:07,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:43:07,663 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:43:07,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:43:07,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:43:07,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:43:07,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:43:07,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:43:07,664 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:43:07,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:43:07,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:43:07,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:43:07,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:43:07,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:43:07,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:43:07,665 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:43:07,665 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:43:07,665 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:43:07,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:43:07,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:43:07,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:43:07,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:43:07,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:43:07,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:43:07,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:43:07,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:43:07,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:43:07,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:43:07,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:43:07,666 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:43:07,666 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:43:07,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:43:07,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:43:07,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:43:07,670 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:43:07,670 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:43:07,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:43:07,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:43:07,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:43:07,884 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:43:07,886 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:43:07,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product20.cil.c [2022-01-10 23:43:07,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1f2df047/7ed6b311c0524756a957146fb726f4be/FLAG6b71989e0 [2022-01-10 23:43:08,487 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:43:08,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product20.cil.c [2022-01-10 23:43:08,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1f2df047/7ed6b311c0524756a957146fb726f4be/FLAG6b71989e0 [2022-01-10 23:43:08,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1f2df047/7ed6b311c0524756a957146fb726f4be [2022-01-10 23:43:08,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:43:08,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:43:08,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:43:08,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:43:08,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:43:08,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:43:08" (1/1) ... [2022-01-10 23:43:08,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e2e71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:08, skipping insertion in model container [2022-01-10 23:43:08,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:43:08" (1/1) ... [2022-01-10 23:43:08,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:43:09,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:43:09,382 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_spec14_product20.cil.c[69987,70000] [2022-01-10 23:43:09,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:43:09,391 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:43:09,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:43:09,519 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_spec14_product20.cil.c[69987,70000] [2022-01-10 23:43:09,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:43:09,538 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:43:09,598 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_spec14_product20.cil.c[69987,70000] [2022-01-10 23:43:09,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:43:09,616 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:43:09,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:09 WrapperNode [2022-01-10 23:43:09,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:43:09,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:43:09,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:43:09,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:43:09,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:09" (1/1) ... [2022-01-10 23:43:09,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:09" (1/1) ... [2022-01-10 23:43:09,945 INFO L137 Inliner]: procedures = 95, calls = 339, calls flagged for inlining = 191, calls inlined = 1331, statements flattened = 41544 [2022-01-10 23:43:09,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:43:09,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:43:09,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:43:09,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:43:09,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:09" (1/1) ... [2022-01-10 23:43:09,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:09" (1/1) ... [2022-01-10 23:43:10,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:09" (1/1) ... [2022-01-10 23:43:10,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:09" (1/1) ... [2022-01-10 23:43:10,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:09" (1/1) ... [2022-01-10 23:43:10,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:09" (1/1) ... [2022-01-10 23:43:10,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:09" (1/1) ... [2022-01-10 23:43:10,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:43:10,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:43:10,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:43:10,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:43:10,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:09" (1/1) ... [2022-01-10 23:43:10,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:43:10,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:43:10,784 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 23:43:10,799 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 23:43:10,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:43:10,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:43:10,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:43:10,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:43:10,958 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:43:10,959 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:43:22,922 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:43:22,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:43:22,969 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:43:22,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:43:22 BoogieIcfgContainer [2022-01-10 23:43:22,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:43:22,980 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:43:22,980 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:43:22,981 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:43:22,983 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:43:22" (1/1) ... [2022-01-10 23:43:24,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:43:24 BasicIcfg [2022-01-10 23:43:24,886 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:43:24,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:43:24,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:43:24,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:43:24,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:43:08" (1/4) ... [2022-01-10 23:43:24,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a731a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:43:24, skipping insertion in model container [2022-01-10 23:43:24,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:09" (2/4) ... [2022-01-10 23:43:24,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a731a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:43:24, skipping insertion in model container [2022-01-10 23:43:24,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:43:22" (3/4) ... [2022-01-10 23:43:24,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a731a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:43:24, skipping insertion in model container [2022-01-10 23:43:24,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:43:24" (4/4) ... [2022-01-10 23:43:24,891 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product20.cil.cTransformedIcfg [2022-01-10 23:43:24,894 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:43:24,894 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 23:43:25,063 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:43:25,068 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 23:43:25,068 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 23:43:25,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 11846 states, 11840 states have (on average 1.8697635135135136) internal successors, (22138), 11845 states have internal predecessors, (22138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:25,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 23:43:25,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:25,267 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] [2022-01-10 23:43:25,267 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 23:43:25,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:25,271 INFO L85 PathProgramCache]: Analyzing trace with hash 524302269, now seen corresponding path program 1 times [2022-01-10 23:43:25,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:25,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255742530] [2022-01-10 23:43:25,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:25,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:25,549 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 23:43:25,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:25,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255742530] [2022-01-10 23:43:25,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255742530] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:25,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:25,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:43:25,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324168165] [2022-01-10 23:43:25,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:25,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:43:25,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:25,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:43:25,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:43:25,635 INFO L87 Difference]: Start difference. First operand has 11846 states, 11840 states have (on average 1.8697635135135136) internal successors, (22138), 11845 states have internal predecessors, (22138), 0 states have call successors, (0), 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 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:26,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:26,155 INFO L93 Difference]: Finished difference Result 28445 states and 53165 transitions. [2022-01-10 23:43:26,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:43:26,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-10 23:43:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:26,229 INFO L225 Difference]: With dead ends: 28445 [2022-01-10 23:43:26,230 INFO L226 Difference]: Without dead ends: 16598 [2022-01-10 23:43:26,256 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 23:43:26,261 INFO L933 BasicCegarLoop]: 31024 mSDtfsCounter, 22100 mSDsluCounter, 8917 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22100 SdHoareTripleChecker+Valid, 39941 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 23:43:26,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22100 Valid, 39941 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16598 states. [2022-01-10 23:43:26,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16598 to 11834. [2022-01-10 23:43:26,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11834 states, 11829 states have (on average 1.8692197142615605) internal successors, (22111), 11833 states have internal predecessors, (22111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:26,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11834 states to 11834 states and 22111 transitions. [2022-01-10 23:43:26,589 INFO L78 Accepts]: Start accepts. Automaton has 11834 states and 22111 transitions. Word has length 30 [2022-01-10 23:43:26,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:26,589 INFO L470 AbstractCegarLoop]: Abstraction has 11834 states and 22111 transitions. [2022-01-10 23:43:26,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 11834 states and 22111 transitions. [2022-01-10 23:43:26,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 23:43:26,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:26,595 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] [2022-01-10 23:43:26,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:43:26,596 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 23:43:26,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:26,598 INFO L85 PathProgramCache]: Analyzing trace with hash 289876027, now seen corresponding path program 1 times [2022-01-10 23:43:26,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:26,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187278428] [2022-01-10 23:43:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:26,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:26,718 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 23:43:26,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:26,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187278428] [2022-01-10 23:43:26,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187278428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:26,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:26,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:43:26,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563189452] [2022-01-10 23:43:26,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:26,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:43:26,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:26,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:43:26,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:43:26,724 INFO L87 Difference]: Start difference. First operand 11834 states and 22111 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:27,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:27,398 INFO L93 Difference]: Finished difference Result 28347 states and 52967 transitions. [2022-01-10 23:43:27,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:43:27,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-01-10 23:43:27,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:27,454 INFO L225 Difference]: With dead ends: 28347 [2022-01-10 23:43:27,454 INFO L226 Difference]: Without dead ends: 16562 [2022-01-10 23:43:27,466 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 23:43:27,468 INFO L933 BasicCegarLoop]: 30881 mSDtfsCounter, 21999 mSDsluCounter, 8854 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21999 SdHoareTripleChecker+Valid, 39735 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 23:43:27,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21999 Valid, 39735 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:43:27,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16562 states. [2022-01-10 23:43:27,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16562 to 11834. [2022-01-10 23:43:27,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11834 states, 11829 states have (on average 1.8671062642657874) internal successors, (22086), 11833 states have internal predecessors, (22086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:27,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11834 states to 11834 states and 22086 transitions. [2022-01-10 23:43:27,868 INFO L78 Accepts]: Start accepts. Automaton has 11834 states and 22086 transitions. Word has length 35 [2022-01-10 23:43:27,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:27,869 INFO L470 AbstractCegarLoop]: Abstraction has 11834 states and 22086 transitions. [2022-01-10 23:43:27,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:27,872 INFO L276 IsEmpty]: Start isEmpty. Operand 11834 states and 22086 transitions. [2022-01-10 23:43:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 23:43:27,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:27,878 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] [2022-01-10 23:43:27,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:43:27,879 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 23:43:27,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:27,879 INFO L85 PathProgramCache]: Analyzing trace with hash 249686866, now seen corresponding path program 1 times [2022-01-10 23:43:27,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:27,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408227579] [2022-01-10 23:43:27,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:27,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:28,015 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 23:43:28,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:28,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408227579] [2022-01-10 23:43:28,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408227579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:28,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:28,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:43:28,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748293233] [2022-01-10 23:43:28,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:28,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:43:28,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:28,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:43:28,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:43:28,017 INFO L87 Difference]: Start difference. First operand 11834 states and 22086 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:29,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:29,384 INFO L93 Difference]: Finished difference Result 49569 states and 92588 transitions. [2022-01-10 23:43:29,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:43:29,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-01-10 23:43:29,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:29,475 INFO L225 Difference]: With dead ends: 49569 [2022-01-10 23:43:29,476 INFO L226 Difference]: Without dead ends: 37763 [2022-01-10 23:43:29,496 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 23:43:29,496 INFO L933 BasicCegarLoop]: 61688 mSDtfsCounter, 65959 mSDsluCounter, 57441 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65959 SdHoareTripleChecker+Valid, 119129 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:29,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65959 Valid, 119129 Invalid, 60 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:29,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37763 states. [2022-01-10 23:43:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37763 to 11816. [2022-01-10 23:43:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11816 states, 11811 states have (on average 1.8679197358394717) internal successors, (22062), 11815 states have internal predecessors, (22062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11816 states to 11816 states and 22062 transitions. [2022-01-10 23:43:29,952 INFO L78 Accepts]: Start accepts. Automaton has 11816 states and 22062 transitions. Word has length 38 [2022-01-10 23:43:29,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:29,952 INFO L470 AbstractCegarLoop]: Abstraction has 11816 states and 22062 transitions. [2022-01-10 23:43:29,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:29,952 INFO L276 IsEmpty]: Start isEmpty. Operand 11816 states and 22062 transitions. [2022-01-10 23:43:29,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 23:43:29,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:29,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:43:29,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:43:29,955 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 23:43:29,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:29,956 INFO L85 PathProgramCache]: Analyzing trace with hash -228044437, now seen corresponding path program 1 times [2022-01-10 23:43:29,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:29,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670218944] [2022-01-10 23:43:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:29,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:30,024 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 23:43:30,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:30,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670218944] [2022-01-10 23:43:30,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670218944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:30,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:30,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:43:30,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242500949] [2022-01-10 23:43:30,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:30,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:43:30,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:30,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:43:30,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:43:30,026 INFO L87 Difference]: Start difference. First operand 11816 states and 22062 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:30,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:30,962 INFO L93 Difference]: Finished difference Result 47123 states and 88027 transitions. [2022-01-10 23:43:30,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:43:30,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-01-10 23:43:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:31,036 INFO L225 Difference]: With dead ends: 47123 [2022-01-10 23:43:31,037 INFO L226 Difference]: Without dead ends: 35329 [2022-01-10 23:43:31,057 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 23:43:31,064 INFO L933 BasicCegarLoop]: 35168 mSDtfsCounter, 65995 mSDsluCounter, 65931 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65995 SdHoareTripleChecker+Valid, 101099 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:31,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65995 Valid, 101099 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:31,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35329 states. [2022-01-10 23:43:31,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35329 to 11820. [2022-01-10 23:43:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11820 states, 11815 states have (on average 1.86754126110876) internal successors, (22065), 11819 states have internal predecessors, (22065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11820 states to 11820 states and 22065 transitions. [2022-01-10 23:43:31,473 INFO L78 Accepts]: Start accepts. Automaton has 11820 states and 22065 transitions. Word has length 40 [2022-01-10 23:43:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:31,473 INFO L470 AbstractCegarLoop]: Abstraction has 11820 states and 22065 transitions. [2022-01-10 23:43:31,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:31,473 INFO L276 IsEmpty]: Start isEmpty. Operand 11820 states and 22065 transitions. [2022-01-10 23:43:31,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 23:43:31,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:31,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:43:31,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:43:31,475 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 23:43:31,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:31,475 INFO L85 PathProgramCache]: Analyzing trace with hash -482780982, now seen corresponding path program 1 times [2022-01-10 23:43:31,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:31,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196089742] [2022-01-10 23:43:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:31,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:31,681 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 23:43:31,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:31,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196089742] [2022-01-10 23:43:31,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196089742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:31,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:31,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:43:31,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926645948] [2022-01-10 23:43:31,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:31,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:43:31,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:31,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:43:31,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:43:31,682 INFO L87 Difference]: Start difference. First operand 11820 states and 22065 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:33,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:33,038 INFO L93 Difference]: Finished difference Result 47339 states and 88410 transitions. [2022-01-10 23:43:33,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:43:33,039 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-01-10 23:43:33,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:33,108 INFO L225 Difference]: With dead ends: 47339 [2022-01-10 23:43:33,109 INFO L226 Difference]: Without dead ends: 35534 [2022-01-10 23:43:33,124 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 23:43:33,125 INFO L933 BasicCegarLoop]: 66342 mSDtfsCounter, 92628 mSDsluCounter, 88813 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92628 SdHoareTripleChecker+Valid, 155155 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:33,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92628 Valid, 155155 Invalid, 46 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:33,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35534 states. [2022-01-10 23:43:33,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35534 to 11812. [2022-01-10 23:43:33,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11812 states, 11807 states have (on average 1.867790293893453) internal successors, (22053), 11811 states have internal predecessors, (22053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11812 states to 11812 states and 22053 transitions. [2022-01-10 23:43:33,541 INFO L78 Accepts]: Start accepts. Automaton has 11812 states and 22053 transitions. Word has length 40 [2022-01-10 23:43:33,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:33,543 INFO L470 AbstractCegarLoop]: Abstraction has 11812 states and 22053 transitions. [2022-01-10 23:43:33,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 11812 states and 22053 transitions. [2022-01-10 23:43:33,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 23:43:33,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:33,543 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] [2022-01-10 23:43:33,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:43:33,544 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:33,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:33,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1968839417, now seen corresponding path program 1 times [2022-01-10 23:43:33,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:33,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664596265] [2022-01-10 23:43:33,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:33,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:33,593 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 23:43:33,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:33,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664596265] [2022-01-10 23:43:33,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664596265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:33,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:33,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:43:33,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055581478] [2022-01-10 23:43:33,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:33,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:43:33,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:33,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:43:33,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:43:33,595 INFO L87 Difference]: Start difference. First operand 11812 states and 22053 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:34,373 INFO L93 Difference]: Finished difference Result 33046 states and 61721 transitions. [2022-01-10 23:43:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:43:34,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-10 23:43:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:34,420 INFO L225 Difference]: With dead ends: 33046 [2022-01-10 23:43:34,420 INFO L226 Difference]: Without dead ends: 21262 [2022-01-10 23:43:34,439 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 23:43:34,440 INFO L933 BasicCegarLoop]: 22015 mSDtfsCounter, 61706 mSDsluCounter, 26518 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61706 SdHoareTripleChecker+Valid, 48533 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:34,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61706 Valid, 48533 Invalid, 55 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21262 states. [2022-01-10 23:43:34,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21262 to 11814. [2022-01-10 23:43:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11814 states, 11809 states have (on average 1.867558641713947) internal successors, (22054), 11813 states have internal predecessors, (22054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:34,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11814 states to 11814 states and 22054 transitions. [2022-01-10 23:43:34,894 INFO L78 Accepts]: Start accepts. Automaton has 11814 states and 22054 transitions. Word has length 41 [2022-01-10 23:43:34,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:34,895 INFO L470 AbstractCegarLoop]: Abstraction has 11814 states and 22054 transitions. [2022-01-10 23:43:34,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:34,895 INFO L276 IsEmpty]: Start isEmpty. Operand 11814 states and 22054 transitions. [2022-01-10 23:43:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 23:43:34,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:34,897 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] [2022-01-10 23:43:34,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:43:34,897 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 23:43:34,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:34,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1360423684, now seen corresponding path program 1 times [2022-01-10 23:43:34,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:34,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057165617] [2022-01-10 23:43:34,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:34,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:34,980 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 23:43:34,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:34,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057165617] [2022-01-10 23:43:34,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057165617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:34,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:34,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:43:34,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792982128] [2022-01-10 23:43:34,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:34,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:43:34,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:34,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:43:34,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:43:34,982 INFO L87 Difference]: Start difference. First operand 11814 states and 22054 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:38,329 INFO L93 Difference]: Finished difference Result 33557 states and 62670 transitions. [2022-01-10 23:43:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:43:38,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-01-10 23:43:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:38,394 INFO L225 Difference]: With dead ends: 33557 [2022-01-10 23:43:38,394 INFO L226 Difference]: Without dead ends: 21787 [2022-01-10 23:43:38,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 23:43:38,410 INFO L933 BasicCegarLoop]: 22053 mSDtfsCounter, 59050 mSDsluCounter, 18471 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59050 SdHoareTripleChecker+Valid, 40524 SdHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:38,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59050 Valid, 40524 Invalid, 3047 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [664 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 23:43:38,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21787 states. [2022-01-10 23:43:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21787 to 11814. [2022-01-10 23:43:38,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11814 states, 11809 states have (on average 1.8418155644000338) internal successors, (21750), 11813 states have internal predecessors, (21750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:38,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11814 states to 11814 states and 21750 transitions. [2022-01-10 23:43:38,913 INFO L78 Accepts]: Start accepts. Automaton has 11814 states and 21750 transitions. Word has length 42 [2022-01-10 23:43:38,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:38,913 INFO L470 AbstractCegarLoop]: Abstraction has 11814 states and 21750 transitions. [2022-01-10 23:43:38,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 11814 states and 21750 transitions. [2022-01-10 23:43:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 23:43:38,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:38,914 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 23:43:38,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:43:38,914 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 23:43:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:38,915 INFO L85 PathProgramCache]: Analyzing trace with hash 788481868, now seen corresponding path program 1 times [2022-01-10 23:43:38,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:38,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595935807] [2022-01-10 23:43:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:38,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:38,997 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 23:43:38,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:38,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595935807] [2022-01-10 23:43:38,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595935807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:38,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:38,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:43:38,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879337190] [2022-01-10 23:43:38,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:38,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:43:38,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:38,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:43:38,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:43:38,999 INFO L87 Difference]: Start difference. First operand 11814 states and 21750 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 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 23:43:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:47,177 INFO L93 Difference]: Finished difference Result 140250 states and 261140 transitions. [2022-01-10 23:43:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:43:47,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 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 23:43:47,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:47,586 INFO L225 Difference]: With dead ends: 140250 [2022-01-10 23:43:47,587 INFO L226 Difference]: Without dead ends: 107793 [2022-01-10 23:43:47,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-10 23:43:47,634 INFO L933 BasicCegarLoop]: 22033 mSDtfsCounter, 308292 mSDsluCounter, 174686 mSDsCounter, 0 mSdLazyCounter, 4043 mSolverCounterSat, 1499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308292 SdHoareTripleChecker+Valid, 196719 SdHoareTripleChecker+Invalid, 5542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1499 IncrementalHoareTripleChecker+Valid, 4043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:47,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308292 Valid, 196719 Invalid, 5542 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1499 Valid, 4043 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-10 23:43:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107793 states. [2022-01-10 23:43:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107793 to 18870. [2022-01-10 23:43:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18870 states, 18865 states have (on average 1.8407103100980653) internal successors, (34725), 18869 states have internal predecessors, (34725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:49,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18870 states to 18870 states and 34725 transitions. [2022-01-10 23:43:49,045 INFO L78 Accepts]: Start accepts. Automaton has 18870 states and 34725 transitions. Word has length 46 [2022-01-10 23:43:49,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:49,046 INFO L470 AbstractCegarLoop]: Abstraction has 18870 states and 34725 transitions. [2022-01-10 23:43:49,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 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 23:43:49,047 INFO L276 IsEmpty]: Start isEmpty. Operand 18870 states and 34725 transitions. [2022-01-10 23:43:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 23:43:49,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:49,047 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] [2022-01-10 23:43:49,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:43:49,048 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 23:43:49,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:49,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1756168281, now seen corresponding path program 1 times [2022-01-10 23:43:49,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:49,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422109443] [2022-01-10 23:43:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:49,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:49,112 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 23:43:49,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:49,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422109443] [2022-01-10 23:43:49,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422109443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:49,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:49,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:43:49,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216179372] [2022-01-10 23:43:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:49,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:43:49,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:43:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:43:49,114 INFO L87 Difference]: Start difference. First operand 18870 states and 34725 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:49,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:49,673 INFO L93 Difference]: Finished difference Result 30642 states and 56389 transitions. [2022-01-10 23:43:49,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:43:49,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-10 23:43:49,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:49,689 INFO L225 Difference]: With dead ends: 30642 [2022-01-10 23:43:49,690 INFO L226 Difference]: Without dead ends: 11774 [2022-01-10 23:43:49,701 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 23:43:49,702 INFO L933 BasicCegarLoop]: 21671 mSDtfsCounter, 38893 mSDsluCounter, 17411 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38893 SdHoareTripleChecker+Valid, 39082 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:49,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38893 Valid, 39082 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:49,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11774 states. [2022-01-10 23:43:50,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11774 to 11774. [2022-01-10 23:43:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11774 states, 11772 states have (on average 1.8391097519537887) internal successors, (21650), 11773 states have internal predecessors, (21650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:50,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11774 states to 11774 states and 21650 transitions. [2022-01-10 23:43:50,106 INFO L78 Accepts]: Start accepts. Automaton has 11774 states and 21650 transitions. Word has length 49 [2022-01-10 23:43:50,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:50,106 INFO L470 AbstractCegarLoop]: Abstraction has 11774 states and 21650 transitions. [2022-01-10 23:43:50,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:50,106 INFO L276 IsEmpty]: Start isEmpty. Operand 11774 states and 21650 transitions. [2022-01-10 23:43:50,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 23:43:50,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:50,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:43:50,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:43:50,118 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:50,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:50,119 INFO L85 PathProgramCache]: Analyzing trace with hash -945692633, now seen corresponding path program 1 times [2022-01-10 23:43:50,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:50,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029521631] [2022-01-10 23:43:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:50,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:50,253 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 23:43:50,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:50,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029521631] [2022-01-10 23:43:50,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029521631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:50,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:50,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:43:50,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120069361] [2022-01-10 23:43:50,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:50,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:43:50,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:50,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:43:50,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:43:50,255 INFO L87 Difference]: Start difference. First operand 11774 states and 21650 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:50,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:50,717 INFO L93 Difference]: Finished difference Result 16508 states and 30329 transitions. [2022-01-10 23:43:50,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:43:50,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-01-10 23:43:50,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:50,733 INFO L225 Difference]: With dead ends: 16508 [2022-01-10 23:43:50,733 INFO L226 Difference]: Without dead ends: 11768 [2022-01-10 23:43:50,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:43:50,738 INFO L933 BasicCegarLoop]: 21638 mSDtfsCounter, 25871 mSDsluCounter, 47724 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25871 SdHoareTripleChecker+Valid, 69362 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:50,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25871 Valid, 69362 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:50,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11768 states. [2022-01-10 23:43:51,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11768 to 11768. [2022-01-10 23:43:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11768 states, 11766 states have (on average 1.8389427163012069) internal successors, (21637), 11767 states have internal predecessors, (21637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11768 states to 11768 states and 21637 transitions. [2022-01-10 23:43:51,189 INFO L78 Accepts]: Start accepts. Automaton has 11768 states and 21637 transitions. Word has length 104 [2022-01-10 23:43:51,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:51,190 INFO L470 AbstractCegarLoop]: Abstraction has 11768 states and 21637 transitions. [2022-01-10 23:43:51,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:51,190 INFO L276 IsEmpty]: Start isEmpty. Operand 11768 states and 21637 transitions. [2022-01-10 23:43:51,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 23:43:51,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:51,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:43:51,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:43:51,207 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:51,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:51,207 INFO L85 PathProgramCache]: Analyzing trace with hash 677005322, now seen corresponding path program 1 times [2022-01-10 23:43:51,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:51,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038298259] [2022-01-10 23:43:51,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:51,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:51,301 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 23:43:51,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:51,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038298259] [2022-01-10 23:43:51,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038298259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:51,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:51,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 23:43:51,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708425248] [2022-01-10 23:43:51,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:51,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:43:51,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:51,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:43:51,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:43:51,303 INFO L87 Difference]: Start difference. First operand 11768 states and 21637 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:51,871 INFO L93 Difference]: Finished difference Result 16502 states and 30316 transitions. [2022-01-10 23:43:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:43:51,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-10 23:43:51,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:51,890 INFO L225 Difference]: With dead ends: 16502 [2022-01-10 23:43:51,890 INFO L226 Difference]: Without dead ends: 11762 [2022-01-10 23:43:51,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:43:51,897 INFO L933 BasicCegarLoop]: 21624 mSDtfsCounter, 25861 mSDsluCounter, 60631 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25861 SdHoareTripleChecker+Valid, 82255 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:51,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25861 Valid, 82255 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11762 states. [2022-01-10 23:43:52,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11762 to 11762. [2022-01-10 23:43:52,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11762 states, 11760 states have (on average 1.8387755102040817) internal successors, (21624), 11761 states have internal predecessors, (21624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:52,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11762 states to 11762 states and 21624 transitions. [2022-01-10 23:43:52,328 INFO L78 Accepts]: Start accepts. Automaton has 11762 states and 21624 transitions. Word has length 105 [2022-01-10 23:43:52,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:52,328 INFO L470 AbstractCegarLoop]: Abstraction has 11762 states and 21624 transitions. [2022-01-10 23:43:52,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:52,328 INFO L276 IsEmpty]: Start isEmpty. Operand 11762 states and 21624 transitions. [2022-01-10 23:43:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 23:43:52,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:52,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:52,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:43:52,339 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:52,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash 605897384, now seen corresponding path program 1 times [2022-01-10 23:43:52,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:52,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488016564] [2022-01-10 23:43:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:52,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:52,429 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 23:43:52,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:52,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488016564] [2022-01-10 23:43:52,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488016564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:52,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:52,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 23:43:52,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512254338] [2022-01-10 23:43:52,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:52,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:43:52,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:52,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:43:52,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:43:52,430 INFO L87 Difference]: Start difference. First operand 11762 states and 21624 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:53,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:53,015 INFO L93 Difference]: Finished difference Result 16496 states and 30303 transitions. [2022-01-10 23:43:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:43:53,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-10 23:43:53,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:53,030 INFO L225 Difference]: With dead ends: 16496 [2022-01-10 23:43:53,030 INFO L226 Difference]: Without dead ends: 11762 [2022-01-10 23:43:53,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:43:53,035 INFO L933 BasicCegarLoop]: 21604 mSDtfsCounter, 60605 mSDsluCounter, 56116 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60605 SdHoareTripleChecker+Valid, 77720 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:53,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60605 Valid, 77720 Invalid, 48 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:53,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11762 states. [2022-01-10 23:43:53,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11762 to 11762. [2022-01-10 23:43:53,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11762 states, 11760 states have (on average 1.838690476190476) internal successors, (21623), 11761 states have internal predecessors, (21623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11762 states to 11762 states and 21623 transitions. [2022-01-10 23:43:53,451 INFO L78 Accepts]: Start accepts. Automaton has 11762 states and 21623 transitions. Word has length 105 [2022-01-10 23:43:53,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:53,451 INFO L470 AbstractCegarLoop]: Abstraction has 11762 states and 21623 transitions. [2022-01-10 23:43:53,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:53,451 INFO L276 IsEmpty]: Start isEmpty. Operand 11762 states and 21623 transitions. [2022-01-10 23:43:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 23:43:53,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:53,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:43:53,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:43:53,461 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:53,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:53,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1786793535, now seen corresponding path program 1 times [2022-01-10 23:43:53,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:53,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783805948] [2022-01-10 23:43:53,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:53,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:53,570 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 23:43:53,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:53,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783805948] [2022-01-10 23:43:53,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783805948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:53,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:53,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:43:53,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48251030] [2022-01-10 23:43:53,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:53,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:43:53,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:53,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:43:53,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:43:53,572 INFO L87 Difference]: Start difference. First operand 11762 states and 21623 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:54,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:54,811 INFO L93 Difference]: Finished difference Result 32068 states and 59121 transitions. [2022-01-10 23:43:54,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:43:54,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 23:43:54,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:54,843 INFO L225 Difference]: With dead ends: 32068 [2022-01-10 23:43:54,843 INFO L226 Difference]: Without dead ends: 22651 [2022-01-10 23:43:54,857 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 23:43:54,860 INFO L933 BasicCegarLoop]: 30150 mSDtfsCounter, 21342 mSDsluCounter, 20177 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21342 SdHoareTripleChecker+Valid, 50327 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:54,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21342 Valid, 50327 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 23:43:54,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22651 states. [2022-01-10 23:43:55,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22651 to 17635. [2022-01-10 23:43:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17635 states, 17633 states have (on average 1.834117847218284) internal successors, (32341), 17634 states have internal predecessors, (32341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:55,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17635 states to 17635 states and 32341 transitions. [2022-01-10 23:43:55,692 INFO L78 Accepts]: Start accepts. Automaton has 17635 states and 32341 transitions. Word has length 106 [2022-01-10 23:43:55,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:55,693 INFO L470 AbstractCegarLoop]: Abstraction has 17635 states and 32341 transitions. [2022-01-10 23:43:55,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:55,693 INFO L276 IsEmpty]: Start isEmpty. Operand 17635 states and 32341 transitions. [2022-01-10 23:43:55,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 23:43:55,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:55,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:55,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:43:55,709 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:55,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:55,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1100328453, now seen corresponding path program 1 times [2022-01-10 23:43:55,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:55,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60030719] [2022-01-10 23:43:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:55,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:55,846 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 23:43:55,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:55,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60030719] [2022-01-10 23:43:55,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60030719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:55,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:55,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:43:55,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453008386] [2022-01-10 23:43:55,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:55,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:43:55,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:55,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:43:55,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:43:55,847 INFO L87 Difference]: Start difference. First operand 17635 states and 32341 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:57,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:57,104 INFO L93 Difference]: Finished difference Result 44886 states and 82476 transitions. [2022-01-10 23:43:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:43:57,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2022-01-10 23:43:57,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:57,142 INFO L225 Difference]: With dead ends: 44886 [2022-01-10 23:43:57,142 INFO L226 Difference]: Without dead ends: 27960 [2022-01-10 23:43:57,157 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 23:43:57,158 INFO L933 BasicCegarLoop]: 22420 mSDtfsCounter, 21154 mSDsluCounter, 19351 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21154 SdHoareTripleChecker+Valid, 41771 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:57,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21154 Valid, 41771 Invalid, 193 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:43:57,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27960 states. [2022-01-10 23:43:58,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27960 to 27956. [2022-01-10 23:43:58,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27956 states, 27954 states have (on average 1.8368033197395721) internal successors, (51346), 27955 states have internal predecessors, (51346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:58,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27956 states to 27956 states and 51346 transitions. [2022-01-10 23:43:58,316 INFO L78 Accepts]: Start accepts. Automaton has 27956 states and 51346 transitions. Word has length 168 [2022-01-10 23:43:58,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:58,316 INFO L470 AbstractCegarLoop]: Abstraction has 27956 states and 51346 transitions. [2022-01-10 23:43:58,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:58,317 INFO L276 IsEmpty]: Start isEmpty. Operand 27956 states and 51346 transitions. [2022-01-10 23:43:58,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 23:43:58,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:58,338 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:58,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:43:58,339 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:58,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:58,339 INFO L85 PathProgramCache]: Analyzing trace with hash 775285696, now seen corresponding path program 1 times [2022-01-10 23:43:58,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:58,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605355156] [2022-01-10 23:43:58,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:58,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:58,382 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 23:43:58,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:58,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605355156] [2022-01-10 23:43:58,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605355156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:58,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:58,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:43:58,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645398706] [2022-01-10 23:43:58,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:58,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:43:58,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:58,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:43:58,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:43:58,383 INFO L87 Difference]: Start difference. First operand 27956 states and 51346 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:00,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:00,204 INFO L93 Difference]: Finished difference Result 75643 states and 139103 transitions. [2022-01-10 23:44:00,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:44:00,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2022-01-10 23:44:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:00,269 INFO L225 Difference]: With dead ends: 75643 [2022-01-10 23:44:00,270 INFO L226 Difference]: Without dead ends: 48398 [2022-01-10 23:44:00,291 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 23:44:00,291 INFO L933 BasicCegarLoop]: 21554 mSDtfsCounter, 21069 mSDsluCounter, 19351 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21069 SdHoareTripleChecker+Valid, 40905 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:00,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21069 Valid, 40905 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:44:00,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48398 states. [2022-01-10 23:44:02,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48398 to 48394. [2022-01-10 23:44:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48394 states, 48392 states have (on average 1.8383617126797818) internal successors, (88962), 48393 states have internal predecessors, (88962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48394 states to 48394 states and 88962 transitions. [2022-01-10 23:44:02,423 INFO L78 Accepts]: Start accepts. Automaton has 48394 states and 88962 transitions. Word has length 168 [2022-01-10 23:44:02,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:02,423 INFO L470 AbstractCegarLoop]: Abstraction has 48394 states and 88962 transitions. [2022-01-10 23:44:02,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:02,423 INFO L276 IsEmpty]: Start isEmpty. Operand 48394 states and 88962 transitions. [2022-01-10 23:44:02,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 23:44:02,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:02,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:44:02,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:44:02,450 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:02,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:02,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1400198616, now seen corresponding path program 1 times [2022-01-10 23:44:02,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:02,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183237115] [2022-01-10 23:44:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:02,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:02,512 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 23:44:02,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:02,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183237115] [2022-01-10 23:44:02,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183237115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:02,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:02,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:44:02,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353345363] [2022-01-10 23:44:02,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:02,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:44:02,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:02,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:44:02,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:44:02,515 INFO L87 Difference]: Start difference. First operand 48394 states and 88962 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)