/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_spec13_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:42:19,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:42:19,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:42:19,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:42:19,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:42:19,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:42:19,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:42:19,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:42:19,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:42:19,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:42:19,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:42:19,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:42:19,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:42:19,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:42:19,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:42:19,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:42:19,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:42:19,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:42:19,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:42:19,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:42:19,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:42:19,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:42:19,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:42:19,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:42:19,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:42:19,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:42:19,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:42:19,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:42:19,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:42:19,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:42:19,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:42:19,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:42:19,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:42:19,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:42:19,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:42:19,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:42:19,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:42:19,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:42:19,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:42:19,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:42:19,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:42:19,633 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 23:42:19,652 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:42:19,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:42:19,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:42:19,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:42:19,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:42:19,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:42:19,654 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:42:19,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:42:19,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:42:19,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:42:19,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:42:19,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:42:19,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:42:19,655 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:42:19,655 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:42:19,655 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:42:19,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:42:19,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:42:19,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:42:19,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:42:19,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:42:19,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:42:19,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:42:19,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:42:19,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:42:19,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:42:19,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:42:19,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:42:19,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:42:19,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:42:19,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:42:19,658 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:42:19,658 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:42:19,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:42:19,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:42:19,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:42:19,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:42:19,861 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:42:19,862 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:42:19,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c [2022-01-10 23:42:19,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c90c332c1/4c84b4a8b785433fb3455517b3187cce/FLAGb786c8eff [2022-01-10 23:42:20,350 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:42:20,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec13_product30.cil.c [2022-01-10 23:42:20,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c90c332c1/4c84b4a8b785433fb3455517b3187cce/FLAGb786c8eff [2022-01-10 23:42:20,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c90c332c1/4c84b4a8b785433fb3455517b3187cce [2022-01-10 23:42:20,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:42:20,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:42:20,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:42:20,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:42:20,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:42:20,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:42:20" (1/1) ... [2022-01-10 23:42:20,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd91454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:42:20, skipping insertion in model container [2022-01-10 23:42:20,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:42:20" (1/1) ... [2022-01-10 23:42:20,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:42:20,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:42:21,083 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_spec13_product30.cil.c[61393,61406] [2022-01-10 23:42:21,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:42:21,137 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:42:21,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:42:21,225 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_spec13_product30.cil.c[61393,61406] [2022-01-10 23:42:21,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:42:21,250 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:42:21,308 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_spec13_product30.cil.c[61393,61406] [2022-01-10 23:42:21,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:42:21,339 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:42:21,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:42:21 WrapperNode [2022-01-10 23:42:21,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:42:21,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:42:21,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:42:21,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:42:21,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:42:21" (1/1) ... [2022-01-10 23:42:21,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:42:21" (1/1) ... [2022-01-10 23:42:21,817 INFO L137 Inliner]: procedures = 95, calls = 346, calls flagged for inlining = 198, calls inlined = 1875, statements flattened = 66503 [2022-01-10 23:42:21,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:42:21,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:42:21,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:42:21,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:42:21,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:42:21" (1/1) ... [2022-01-10 23:42:21,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:42:21" (1/1) ... [2022-01-10 23:42:22,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:42:21" (1/1) ... [2022-01-10 23:42:22,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:42:21" (1/1) ... [2022-01-10 23:42:22,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:42:21" (1/1) ... [2022-01-10 23:42:22,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:42:21" (1/1) ... [2022-01-10 23:42:22,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:42:21" (1/1) ... [2022-01-10 23:42:22,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:42:22,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:42:22,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:42:22,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:42:22,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:42:21" (1/1) ... [2022-01-10 23:42:22,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:42:22,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:42:22,768 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 23:42:22,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:42:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:42:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:42:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:42:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:42:23,084 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:42:23,085 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:42:41,145 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:42:41,230 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:42:41,230 INFO L299 CfgBuilder]: Removed 61 assume(true) statements. [2022-01-10 23:42:41,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:42:41 BoogieIcfgContainer [2022-01-10 23:42:41,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:42:41,246 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:42:41,246 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:42:41,247 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:42:41,249 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:42:41" (1/1) ... [2022-01-10 23:42:43,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:42:43 BasicIcfg [2022-01-10 23:42:43,883 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:42:43,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:42:43,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:42:43,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:42:43,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:42:20" (1/4) ... [2022-01-10 23:42:43,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efe5464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:42:43, skipping insertion in model container [2022-01-10 23:42:43,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:42:21" (2/4) ... [2022-01-10 23:42:43,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efe5464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:42:43, skipping insertion in model container [2022-01-10 23:42:43,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:42:41" (3/4) ... [2022-01-10 23:42:43,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efe5464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:42:43, skipping insertion in model container [2022-01-10 23:42:43,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:42:43" (4/4) ... [2022-01-10 23:42:43,892 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product30.cil.cTransformedIcfg [2022-01-10 23:42:43,896 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:42:43,896 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-01-10 23:42:43,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:42:43,977 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 23:42:43,978 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-01-10 23:42:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 17942 states, 17931 states have (on average 1.8813786180358039) internal successors, (33735), 17941 states have internal predecessors, (33735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:44,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 23:42:44,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:42:44,209 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 23:42:44,210 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:42:44,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:42:44,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1125376047, now seen corresponding path program 1 times [2022-01-10 23:42:44,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:42:44,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721936773] [2022-01-10 23:42:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:42:44,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:42:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:42:44,476 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 23:42:44,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:42:44,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721936773] [2022-01-10 23:42:44,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721936773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:42:44,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:42:44,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:42:44,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842724014] [2022-01-10 23:42:44,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:42:44,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:42:44,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:42:44,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:42:44,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:42:44,577 INFO L87 Difference]: Start difference. First operand has 17942 states, 17931 states have (on average 1.8813786180358039) internal successors, (33735), 17941 states have internal predecessors, (33735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:45,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:42:45,496 INFO L93 Difference]: Finished difference Result 43048 states and 80952 transitions. [2022-01-10 23:42:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:42:45,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-10 23:42:45,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:42:45,780 INFO L225 Difference]: With dead ends: 43048 [2022-01-10 23:42:45,780 INFO L226 Difference]: Without dead ends: 25105 [2022-01-10 23:42:45,807 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 23:42:45,809 INFO L933 BasicCegarLoop]: 47017 mSDtfsCounter, 33579 mSDsluCounter, 13465 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33579 SdHoareTripleChecker+Valid, 60482 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:42:45,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33579 Valid, 60482 Invalid, 37 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:42:45,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25105 states. [2022-01-10 23:42:46,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25105 to 17925. [2022-01-10 23:42:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17925 states, 17915 states have (on average 1.874462740720067) internal successors, (33581), 17924 states have internal predecessors, (33581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17925 states to 17925 states and 33581 transitions. [2022-01-10 23:42:46,261 INFO L78 Accepts]: Start accepts. Automaton has 17925 states and 33581 transitions. Word has length 46 [2022-01-10 23:42:46,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:42:46,262 INFO L470 AbstractCegarLoop]: Abstraction has 17925 states and 33581 transitions. [2022-01-10 23:42:46,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:46,262 INFO L276 IsEmpty]: Start isEmpty. Operand 17925 states and 33581 transitions. [2022-01-10 23:42:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 23:42:46,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:42:46,265 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] [2022-01-10 23:42:46,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:42:46,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:42:46,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:42:46,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1870534438, now seen corresponding path program 1 times [2022-01-10 23:42:46,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:42:46,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361716982] [2022-01-10 23:42:46,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:42:46,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:42:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:42:46,359 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 23:42:46,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:42:46,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361716982] [2022-01-10 23:42:46,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361716982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:42:46,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:42:46,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:42:46,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869635980] [2022-01-10 23:42:46,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:42:46,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:42:46,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:42:46,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:42:46,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:42:46,361 INFO L87 Difference]: Start difference. First operand 17925 states and 33581 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:42:47,127 INFO L93 Difference]: Finished difference Result 42945 states and 80451 transitions. [2022-01-10 23:42:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:42:47,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-10 23:42:47,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:42:47,196 INFO L225 Difference]: With dead ends: 42945 [2022-01-10 23:42:47,197 INFO L226 Difference]: Without dead ends: 25069 [2022-01-10 23:42:47,228 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 23:42:47,229 INFO L933 BasicCegarLoop]: 46789 mSDtfsCounter, 33529 mSDsluCounter, 13406 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33529 SdHoareTripleChecker+Valid, 60195 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:42:47,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33529 Valid, 60195 Invalid, 181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:42:47,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25069 states. [2022-01-10 23:42:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25069 to 17925. [2022-01-10 23:42:47,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17925 states, 17915 states have (on average 1.8739045492603963) internal successors, (33571), 17924 states have internal predecessors, (33571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:47,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17925 states to 17925 states and 33571 transitions. [2022-01-10 23:42:47,782 INFO L78 Accepts]: Start accepts. Automaton has 17925 states and 33571 transitions. Word has length 48 [2022-01-10 23:42:47,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:42:47,784 INFO L470 AbstractCegarLoop]: Abstraction has 17925 states and 33571 transitions. [2022-01-10 23:42:47,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:47,786 INFO L276 IsEmpty]: Start isEmpty. Operand 17925 states and 33571 transitions. [2022-01-10 23:42:47,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 23:42:47,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:42:47,794 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] [2022-01-10 23:42:47,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:42:47,794 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:42:47,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:42:47,794 INFO L85 PathProgramCache]: Analyzing trace with hash -922092143, now seen corresponding path program 1 times [2022-01-10 23:42:47,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:42:47,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798000090] [2022-01-10 23:42:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:42:47,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:42:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:42:47,885 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 23:42:47,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:42:47,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798000090] [2022-01-10 23:42:47,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798000090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:42:47,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:42:47,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:42:47,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060061762] [2022-01-10 23:42:47,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:42:47,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:42:47,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:42:47,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:42:47,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:42:47,888 INFO L87 Difference]: Start difference. First operand 17925 states and 33571 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:42:48,501 INFO L93 Difference]: Finished difference Result 43011 states and 80562 transitions. [2022-01-10 23:42:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:42:48,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-01-10 23:42:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:42:48,579 INFO L225 Difference]: With dead ends: 43011 [2022-01-10 23:42:48,579 INFO L226 Difference]: Without dead ends: 25150 [2022-01-10 23:42:48,610 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 23:42:48,612 INFO L933 BasicCegarLoop]: 47089 mSDtfsCounter, 33537 mSDsluCounter, 13534 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33537 SdHoareTripleChecker+Valid, 60623 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:42:48,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33537 Valid, 60623 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:42:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25150 states. [2022-01-10 23:42:49,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25150 to 17925. [2022-01-10 23:42:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17925 states, 17915 states have (on average 1.8738487301144293) internal successors, (33570), 17924 states have internal predecessors, (33570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17925 states to 17925 states and 33570 transitions. [2022-01-10 23:42:49,089 INFO L78 Accepts]: Start accepts. Automaton has 17925 states and 33570 transitions. Word has length 50 [2022-01-10 23:42:49,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:42:49,089 INFO L470 AbstractCegarLoop]: Abstraction has 17925 states and 33570 transitions. [2022-01-10 23:42:49,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:49,090 INFO L276 IsEmpty]: Start isEmpty. Operand 17925 states and 33570 transitions. [2022-01-10 23:42:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 23:42:49,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:42:49,092 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] [2022-01-10 23:42:49,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:42:49,093 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:42:49,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:42:49,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1164039005, now seen corresponding path program 1 times [2022-01-10 23:42:49,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:42:49,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322416048] [2022-01-10 23:42:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:42:49,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:42:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:42:49,143 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 23:42:49,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:42:49,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322416048] [2022-01-10 23:42:49,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322416048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:42:49,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:42:49,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:42:49,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509105883] [2022-01-10 23:42:49,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:42:49,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:42:49,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:42:49,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:42:49,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:42:49,144 INFO L87 Difference]: Start difference. First operand 17925 states and 33570 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:42:49,737 INFO L93 Difference]: Finished difference Result 42910 states and 80369 transitions. [2022-01-10 23:42:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:42:49,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-10 23:42:49,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:42:49,794 INFO L225 Difference]: With dead ends: 42910 [2022-01-10 23:42:49,794 INFO L226 Difference]: Without dead ends: 25085 [2022-01-10 23:42:49,822 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 23:42:49,828 INFO L933 BasicCegarLoop]: 46918 mSDtfsCounter, 33407 mSDsluCounter, 13440 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33407 SdHoareTripleChecker+Valid, 60358 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:42:49,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33407 Valid, 60358 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:42:49,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25085 states. [2022-01-10 23:42:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25085 to 17925. [2022-01-10 23:42:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17925 states, 17915 states have (on average 1.873569634384594) internal successors, (33565), 17924 states have internal predecessors, (33565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17925 states to 17925 states and 33565 transitions. [2022-01-10 23:42:50,286 INFO L78 Accepts]: Start accepts. Automaton has 17925 states and 33565 transitions. Word has length 51 [2022-01-10 23:42:50,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:42:50,287 INFO L470 AbstractCegarLoop]: Abstraction has 17925 states and 33565 transitions. [2022-01-10 23:42:50,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:50,287 INFO L276 IsEmpty]: Start isEmpty. Operand 17925 states and 33565 transitions. [2022-01-10 23:42:50,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 23:42:50,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:42:50,289 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] [2022-01-10 23:42:50,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:42:50,289 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:42:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:42:50,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1144782808, now seen corresponding path program 1 times [2022-01-10 23:42:50,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:42:50,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778914472] [2022-01-10 23:42:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:42:50,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:42:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:42:50,363 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 23:42:50,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:42:50,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778914472] [2022-01-10 23:42:50,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778914472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:42:50,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:42:50,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:42:50,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872669797] [2022-01-10 23:42:50,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:42:50,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:42:50,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:42:50,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:42:50,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:42:50,364 INFO L87 Difference]: Start difference. First operand 17925 states and 33565 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:51,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:42:51,148 INFO L93 Difference]: Finished difference Result 45878 states and 85990 transitions. [2022-01-10 23:42:51,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:42:51,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 23:42:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:42:51,217 INFO L225 Difference]: With dead ends: 45878 [2022-01-10 23:42:51,218 INFO L226 Difference]: Without dead ends: 31528 [2022-01-10 23:42:51,238 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 23:42:51,239 INFO L933 BasicCegarLoop]: 59081 mSDtfsCounter, 26437 mSDsluCounter, 32590 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26437 SdHoareTripleChecker+Valid, 91671 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:42:51,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26437 Valid, 91671 Invalid, 102 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:42:51,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31528 states. [2022-01-10 23:42:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31528 to 17795. [2022-01-10 23:42:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17795 states, 17785 states have (on average 1.8726454877705931) internal successors, (33305), 17794 states have internal predecessors, (33305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:51,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17795 states to 17795 states and 33305 transitions. [2022-01-10 23:42:51,742 INFO L78 Accepts]: Start accepts. Automaton has 17795 states and 33305 transitions. Word has length 52 [2022-01-10 23:42:51,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:42:51,744 INFO L470 AbstractCegarLoop]: Abstraction has 17795 states and 33305 transitions. [2022-01-10 23:42:51,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:51,744 INFO L276 IsEmpty]: Start isEmpty. Operand 17795 states and 33305 transitions. [2022-01-10 23:42:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 23:42:51,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:42:51,747 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] [2022-01-10 23:42:51,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:42:51,747 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:42:51,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:42:51,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1890167755, now seen corresponding path program 1 times [2022-01-10 23:42:51,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:42:51,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751641372] [2022-01-10 23:42:51,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:42:51,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:42:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:42:51,828 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 23:42:51,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:42:51,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751641372] [2022-01-10 23:42:51,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751641372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:42:51,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:42:51,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:42:51,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104118017] [2022-01-10 23:42:51,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:42:51,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:42:51,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:42:51,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:42:51,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:42:51,830 INFO L87 Difference]: Start difference. First operand 17795 states and 33305 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:42:52,932 INFO L93 Difference]: Finished difference Result 59418 states and 111424 transitions. [2022-01-10 23:42:52,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:42:52,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 23:42:52,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:42:53,010 INFO L225 Difference]: With dead ends: 59418 [2022-01-10 23:42:53,011 INFO L226 Difference]: Without dead ends: 45211 [2022-01-10 23:42:53,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:42:53,035 INFO L933 BasicCegarLoop]: 84777 mSDtfsCounter, 52482 mSDsluCounter, 90613 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52482 SdHoareTripleChecker+Valid, 175390 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:42:53,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52482 Valid, 175390 Invalid, 115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:42:53,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45211 states. [2022-01-10 23:42:53,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45211 to 17795. [2022-01-10 23:42:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17795 states, 17785 states have (on average 1.8720832161934213) internal successors, (33295), 17794 states have internal predecessors, (33295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17795 states to 17795 states and 33295 transitions. [2022-01-10 23:42:53,662 INFO L78 Accepts]: Start accepts. Automaton has 17795 states and 33295 transitions. Word has length 54 [2022-01-10 23:42:53,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:42:53,662 INFO L470 AbstractCegarLoop]: Abstraction has 17795 states and 33295 transitions. [2022-01-10 23:42:53,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 17795 states and 33295 transitions. [2022-01-10 23:42:53,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 23:42:53,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:42:53,665 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] [2022-01-10 23:42:53,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:42:53,665 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:42:53,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:42:53,666 INFO L85 PathProgramCache]: Analyzing trace with hash 499904889, now seen corresponding path program 1 times [2022-01-10 23:42:53,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:42:53,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765633892] [2022-01-10 23:42:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:42:53,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:42:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:42:53,737 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 23:42:53,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:42:53,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765633892] [2022-01-10 23:42:53,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765633892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:42:53,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:42:53,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:42:53,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288454454] [2022-01-10 23:42:53,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:42:53,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:42:53,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:42:53,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:42:53,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:42:53,739 INFO L87 Difference]: Start difference. First operand 17795 states and 33295 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:54,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:42:54,826 INFO L93 Difference]: Finished difference Result 60373 states and 112973 transitions. [2022-01-10 23:42:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:42:54,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 23:42:54,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:42:54,895 INFO L225 Difference]: With dead ends: 60373 [2022-01-10 23:42:54,896 INFO L226 Difference]: Without dead ends: 42609 [2022-01-10 23:42:54,919 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 23:42:54,920 INFO L933 BasicCegarLoop]: 66356 mSDtfsCounter, 59834 mSDsluCounter, 99526 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59834 SdHoareTripleChecker+Valid, 165882 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:42:54,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59834 Valid, 165882 Invalid, 104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:42:54,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42609 states. [2022-01-10 23:42:55,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42609 to 17803. [2022-01-10 23:42:55,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17803 states, 17793 states have (on average 1.8716911144832238) internal successors, (33303), 17802 states have internal predecessors, (33303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:55,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17803 states to 17803 states and 33303 transitions. [2022-01-10 23:42:55,525 INFO L78 Accepts]: Start accepts. Automaton has 17803 states and 33303 transitions. Word has length 55 [2022-01-10 23:42:55,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:42:55,525 INFO L470 AbstractCegarLoop]: Abstraction has 17803 states and 33303 transitions. [2022-01-10 23:42:55,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:55,525 INFO L276 IsEmpty]: Start isEmpty. Operand 17803 states and 33303 transitions. [2022-01-10 23:42:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 23:42:55,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:42:55,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:42:55,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:42:55,528 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:42:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:42:55,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1718332122, now seen corresponding path program 1 times [2022-01-10 23:42:55,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:42:55,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805105181] [2022-01-10 23:42:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:42:55,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:42:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:42:55,588 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 23:42:55,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:42:55,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805105181] [2022-01-10 23:42:55,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805105181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:42:55,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:42:55,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:42:55,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324783039] [2022-01-10 23:42:55,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:42:55,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:42:55,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:42:55,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:42:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:42:55,590 INFO L87 Difference]: Start difference. First operand 17803 states and 33303 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:56,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:42:56,193 INFO L93 Difference]: Finished difference Result 42651 states and 79795 transitions. [2022-01-10 23:42:56,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:42:56,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 23:42:56,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:42:56,228 INFO L225 Difference]: With dead ends: 42651 [2022-01-10 23:42:56,229 INFO L226 Difference]: Without dead ends: 24861 [2022-01-10 23:42:56,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:42:56,246 INFO L933 BasicCegarLoop]: 46499 mSDtfsCounter, 26697 mSDsluCounter, 33141 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26697 SdHoareTripleChecker+Valid, 79640 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:42:56,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26697 Valid, 79640 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:42:56,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24861 states. [2022-01-10 23:42:56,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24861 to 17751. [2022-01-10 23:42:56,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17751 states, 17741 states have (on average 1.8714841327997294) internal successors, (33202), 17750 states have internal predecessors, (33202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:56,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17751 states to 17751 states and 33202 transitions. [2022-01-10 23:42:56,884 INFO L78 Accepts]: Start accepts. Automaton has 17751 states and 33202 transitions. Word has length 56 [2022-01-10 23:42:56,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:42:56,885 INFO L470 AbstractCegarLoop]: Abstraction has 17751 states and 33202 transitions. [2022-01-10 23:42:56,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:56,885 INFO L276 IsEmpty]: Start isEmpty. Operand 17751 states and 33202 transitions. [2022-01-10 23:42:56,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 23:42:56,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:42:56,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:42:56,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:42:56,888 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:42:56,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:42:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash -170951220, now seen corresponding path program 1 times [2022-01-10 23:42:56,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:42:56,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403407436] [2022-01-10 23:42:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:42:56,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:42:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:42:56,967 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 23:42:56,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:42:56,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403407436] [2022-01-10 23:42:56,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403407436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:42:56,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:42:56,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 23:42:56,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041531933] [2022-01-10 23:42:56,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:42:56,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:42:56,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:42:56,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:42:56,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:42:56,970 INFO L87 Difference]: Start difference. First operand 17751 states and 33202 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:42:59,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:42:59,320 INFO L93 Difference]: Finished difference Result 81358 states and 152245 transitions. [2022-01-10 23:42:59,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:42:59,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 23:42:59,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:42:59,420 INFO L225 Difference]: With dead ends: 81358 [2022-01-10 23:42:59,421 INFO L226 Difference]: Without dead ends: 63627 [2022-01-10 23:42:59,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 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 23:42:59,445 INFO L933 BasicCegarLoop]: 105768 mSDtfsCounter, 138948 mSDsluCounter, 119036 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138948 SdHoareTripleChecker+Valid, 224804 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:42:59,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138948 Valid, 224804 Invalid, 108 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [20 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:42:59,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63627 states. [2022-01-10 23:43:00,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63627 to 17742. [2022-01-10 23:43:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17742 states, 17732 states have (on average 1.871193322806226) internal successors, (33180), 17741 states have internal predecessors, (33180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17742 states to 17742 states and 33180 transitions. [2022-01-10 23:43:00,301 INFO L78 Accepts]: Start accepts. Automaton has 17742 states and 33180 transitions. Word has length 57 [2022-01-10 23:43:00,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:00,301 INFO L470 AbstractCegarLoop]: Abstraction has 17742 states and 33180 transitions. [2022-01-10 23:43:00,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 17742 states and 33180 transitions. [2022-01-10 23:43:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 23:43:00,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:00,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:43:00,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:43:00,304 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:43:00,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:00,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1929301208, now seen corresponding path program 1 times [2022-01-10 23:43:00,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:00,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723909546] [2022-01-10 23:43:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:00,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:00,345 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 23:43:00,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:00,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723909546] [2022-01-10 23:43:00,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723909546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:00,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:00,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:43:00,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976652506] [2022-01-10 23:43:00,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:00,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:43:00,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:43:00,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:43:00,347 INFO L87 Difference]: Start difference. First operand 17742 states and 33180 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:01,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:01,908 INFO L93 Difference]: Finished difference Result 56604 states and 105905 transitions. [2022-01-10 23:43:01,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:43:01,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 23:43:01,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:01,958 INFO L225 Difference]: With dead ends: 56604 [2022-01-10 23:43:01,958 INFO L226 Difference]: Without dead ends: 38888 [2022-01-10 23:43:01,970 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 23:43:01,971 INFO L933 BasicCegarLoop]: 72682 mSDtfsCounter, 99443 mSDsluCounter, 59362 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99443 SdHoareTripleChecker+Valid, 132044 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:01,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99443 Valid, 132044 Invalid, 104 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:43:02,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38888 states. [2022-01-10 23:43:02,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38888 to 17744. [2022-01-10 23:43:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17744 states, 17734 states have (on average 1.8709822938987255) internal successors, (33180), 17743 states have internal predecessors, (33180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17744 states to 17744 states and 33180 transitions. [2022-01-10 23:43:02,653 INFO L78 Accepts]: Start accepts. Automaton has 17744 states and 33180 transitions. Word has length 58 [2022-01-10 23:43:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:02,654 INFO L470 AbstractCegarLoop]: Abstraction has 17744 states and 33180 transitions. [2022-01-10 23:43:02,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 17744 states and 33180 transitions. [2022-01-10 23:43:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 23:43:02,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:02,656 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] [2022-01-10 23:43:02,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:43:02,656 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:43:02,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:02,656 INFO L85 PathProgramCache]: Analyzing trace with hash -392665501, now seen corresponding path program 1 times [2022-01-10 23:43:02,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:02,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354477954] [2022-01-10 23:43:02,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:02,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:02,703 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 23:43:02,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:02,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354477954] [2022-01-10 23:43:02,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354477954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:02,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:02,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:43:02,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047541109] [2022-01-10 23:43:02,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:02,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:43:02,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:02,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:43:02,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:43:02,705 INFO L87 Difference]: Start difference. First operand 17744 states and 33180 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:05,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:05,385 INFO L93 Difference]: Finished difference Result 77730 states and 145447 transitions. [2022-01-10 23:43:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:43:05,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 23:43:05,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:05,483 INFO L225 Difference]: With dead ends: 77730 [2022-01-10 23:43:05,483 INFO L226 Difference]: Without dead ends: 60012 [2022-01-10 23:43:05,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:43:05,510 INFO L933 BasicCegarLoop]: 112231 mSDtfsCounter, 132562 mSDsluCounter, 118685 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132562 SdHoareTripleChecker+Valid, 230916 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:05,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132562 Valid, 230916 Invalid, 112 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [16 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:43:05,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60012 states. [2022-01-10 23:43:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60012 to 17747. [2022-01-10 23:43:06,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17747 states, 17737 states have (on average 1.8707222190900377) internal successors, (33181), 17746 states have internal predecessors, (33181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:06,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17747 states to 17747 states and 33181 transitions. [2022-01-10 23:43:06,488 INFO L78 Accepts]: Start accepts. Automaton has 17747 states and 33181 transitions. Word has length 59 [2022-01-10 23:43:06,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:06,488 INFO L470 AbstractCegarLoop]: Abstraction has 17747 states and 33181 transitions. [2022-01-10 23:43:06,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 17747 states and 33181 transitions. [2022-01-10 23:43:06,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 23:43:06,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:06,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:43:06,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:43:06,490 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:43:06,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:06,491 INFO L85 PathProgramCache]: Analyzing trace with hash 604621205, now seen corresponding path program 1 times [2022-01-10 23:43:06,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:06,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156547074] [2022-01-10 23:43:06,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:06,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:06,538 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 23:43:06,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:06,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156547074] [2022-01-10 23:43:06,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156547074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:06,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:06,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 23:43:06,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506139606] [2022-01-10 23:43:06,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:06,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:43:06,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:06,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:43:06,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:43:06,539 INFO L87 Difference]: Start difference. First operand 17747 states and 33181 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:10,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:10,981 INFO L93 Difference]: Finished difference Result 98857 states and 184989 transitions. [2022-01-10 23:43:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 23:43:10,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 23:43:10,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:11,116 INFO L225 Difference]: With dead ends: 98857 [2022-01-10 23:43:11,116 INFO L226 Difference]: Without dead ends: 81136 [2022-01-10 23:43:11,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:43:11,144 INFO L933 BasicCegarLoop]: 151771 mSDtfsCounter, 125651 mSDsluCounter, 257107 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125651 SdHoareTripleChecker+Valid, 408878 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:11,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125651 Valid, 408878 Invalid, 146 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [18 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:43:11,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81136 states. [2022-01-10 23:43:12,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81136 to 17751. [2022-01-10 23:43:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17751 states, 17741 states have (on average 1.8704131672397273) internal successors, (33183), 17750 states have internal predecessors, (33183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17751 states to 17751 states and 33183 transitions. [2022-01-10 23:43:12,117 INFO L78 Accepts]: Start accepts. Automaton has 17751 states and 33183 transitions. Word has length 60 [2022-01-10 23:43:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:12,117 INFO L470 AbstractCegarLoop]: Abstraction has 17751 states and 33183 transitions. [2022-01-10 23:43:12,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 17751 states and 33183 transitions. [2022-01-10 23:43:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 23:43:12,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:12,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:43:12,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:43:12,119 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:43:12,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:12,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2061958064, now seen corresponding path program 1 times [2022-01-10 23:43:12,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:12,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206365076] [2022-01-10 23:43:12,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:12,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:12,163 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 23:43:12,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:12,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206365076] [2022-01-10 23:43:12,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206365076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:12,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:12,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:43:12,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954206874] [2022-01-10 23:43:12,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:12,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:43:12,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:12,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:43:12,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:43:12,165 INFO L87 Difference]: Start difference. First operand 17751 states and 33183 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:14,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:14,198 INFO L93 Difference]: Finished difference Result 56587 states and 105861 transitions. [2022-01-10 23:43:14,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:43:14,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 23:43:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:14,254 INFO L225 Difference]: With dead ends: 56587 [2022-01-10 23:43:14,254 INFO L226 Difference]: Without dead ends: 38895 [2022-01-10 23:43:14,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:43:14,274 INFO L933 BasicCegarLoop]: 52921 mSDtfsCounter, 86044 mSDsluCounter, 59406 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86044 SdHoareTripleChecker+Valid, 112327 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:14,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86044 Valid, 112327 Invalid, 49 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:14,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38895 states. [2022-01-10 23:43:15,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38895 to 17754. [2022-01-10 23:43:15,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17754 states, 17744 states have (on average 1.8702660054102795) internal successors, (33186), 17753 states have internal predecessors, (33186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17754 states to 17754 states and 33186 transitions. [2022-01-10 23:43:15,107 INFO L78 Accepts]: Start accepts. Automaton has 17754 states and 33186 transitions. Word has length 61 [2022-01-10 23:43:15,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:15,107 INFO L470 AbstractCegarLoop]: Abstraction has 17754 states and 33186 transitions. [2022-01-10 23:43:15,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:15,107 INFO L276 IsEmpty]: Start isEmpty. Operand 17754 states and 33186 transitions. [2022-01-10 23:43:15,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:43:15,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:15,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:43:15,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:43:15,110 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:43:15,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:15,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1510860838, now seen corresponding path program 1 times [2022-01-10 23:43:15,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:15,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874937743] [2022-01-10 23:43:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:15,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:15,154 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 23:43:15,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:15,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874937743] [2022-01-10 23:43:15,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874937743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:15,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:15,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:43:15,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625598546] [2022-01-10 23:43:15,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:15,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:43:15,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:15,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:43:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:43:15,155 INFO L87 Difference]: Start difference. First operand 17754 states and 33186 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:16,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:16,280 INFO L93 Difference]: Finished difference Result 42548 states and 79570 transitions. [2022-01-10 23:43:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:43:16,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 23:43:16,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:16,323 INFO L225 Difference]: With dead ends: 42548 [2022-01-10 23:43:16,323 INFO L226 Difference]: Without dead ends: 24829 [2022-01-10 23:43:16,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:43:16,343 INFO L933 BasicCegarLoop]: 46414 mSDtfsCounter, 86038 mSDsluCounter, 26615 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86038 SdHoareTripleChecker+Valid, 73029 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:16,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86038 Valid, 73029 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:16,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24829 states. [2022-01-10 23:43:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24829 to 17731. [2022-01-10 23:43:17,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17731 states, 17721 states have (on average 1.8704926358557643) internal successors, (33147), 17730 states have internal predecessors, (33147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17731 states to 17731 states and 33147 transitions. [2022-01-10 23:43:17,200 INFO L78 Accepts]: Start accepts. Automaton has 17731 states and 33147 transitions. Word has length 62 [2022-01-10 23:43:17,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:17,200 INFO L470 AbstractCegarLoop]: Abstraction has 17731 states and 33147 transitions. [2022-01-10 23:43:17,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:43:17,200 INFO L276 IsEmpty]: Start isEmpty. Operand 17731 states and 33147 transitions. [2022-01-10 23:43:17,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:43:17,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:17,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:43:17,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:43:17,202 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2022-01-10 23:43:17,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:17,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1996347820, now seen corresponding path program 1 times [2022-01-10 23:43:17,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:17,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309768080] [2022-01-10 23:43:17,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:17,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:17,250 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 23:43:17,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:17,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309768080] [2022-01-10 23:43:17,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309768080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:17,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:17,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:43:17,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150953028] [2022-01-10 23:43:17,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:17,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:43:17,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:43:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:43:17,252 INFO L87 Difference]: Start difference. First operand 17731 states and 33147 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)