/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec14_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:53:33,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:53:33,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:53:33,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:53:33,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:53:33,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:53:33,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:53:33,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:53:33,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:53:33,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:53:33,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:53:33,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:53:33,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:53:33,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:53:33,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:53:33,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:53:33,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:53:33,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:53:33,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:53:33,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:53:33,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:53:33,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:53:33,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:53:33,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:53:33,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:53:33,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:53:33,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:53:33,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:53:33,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:53:33,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:53:33,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:53:33,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:53:33,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:53:33,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:53:33,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:53:33,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:53:33,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:53:33,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:53:33,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:53:33,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:53:33,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:53:33,831 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:53:33,848 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:53:33,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:53:33,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:53:33,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:53:33,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:53:33,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:53:33,849 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:53:33,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:53:33,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:53:33,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:53:33,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:53:33,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:53:33,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:53:33,850 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:53:33,850 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:53:33,850 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:53:33,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:53:33,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:53:33,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:53:33,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:53:33,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:53:33,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:53:33,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:53:33,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:53:33,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:53:33,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:53:33,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:53:33,855 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:53:33,855 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:53:33,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:53:33,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:53:33,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:53:33,856 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:53:33,856 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:53:34,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:53:34,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:53:34,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:53:34,049 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:53:34,053 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:53:34,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product32.cil.c [2022-01-10 17:53:34,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0e556228/c2eb40cfecad4f118bbd83eb32768612/FLAGf37625cc8 [2022-01-10 17:53:34,625 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:53:34,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product32.cil.c [2022-01-10 17:53:34,656 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0e556228/c2eb40cfecad4f118bbd83eb32768612/FLAGf37625cc8 [2022-01-10 17:53:35,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0e556228/c2eb40cfecad4f118bbd83eb32768612 [2022-01-10 17:53:35,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:53:35,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:53:35,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:53:35,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:53:35,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:53:35,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:53:35" (1/1) ... [2022-01-10 17:53:35,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d8656a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:35, skipping insertion in model container [2022-01-10 17:53:35,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:53:35" (1/1) ... [2022-01-10 17:53:35,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:53:35,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:53:35,546 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product32.cil.c[71521,71534] [2022-01-10 17:53:35,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:53:35,562 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:53:35,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:53:35,657 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product32.cil.c[71521,71534] [2022-01-10 17:53:35,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:53:35,661 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:53:35,732 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product32.cil.c[71521,71534] [2022-01-10 17:53:35,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:53:35,766 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:53:35,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:35 WrapperNode [2022-01-10 17:53:35,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:53:35,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:53:35,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:53:35,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:53:35,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:35" (1/1) ... [2022-01-10 17:53:35,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:35" (1/1) ... [2022-01-10 17:53:36,230 INFO L137 Inliner]: procedures = 98, calls = 348, calls flagged for inlining = 200, calls inlined = 2031, statements flattened = 67604 [2022-01-10 17:53:36,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:53:36,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:53:36,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:53:36,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:53:36,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:35" (1/1) ... [2022-01-10 17:53:36,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:35" (1/1) ... [2022-01-10 17:53:36,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:35" (1/1) ... [2022-01-10 17:53:36,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:35" (1/1) ... [2022-01-10 17:53:36,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:35" (1/1) ... [2022-01-10 17:53:37,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:35" (1/1) ... [2022-01-10 17:53:37,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:35" (1/1) ... [2022-01-10 17:53:37,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:53:37,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:53:37,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:53:37,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:53:37,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:35" (1/1) ... [2022-01-10 17:53:37,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:53:37,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:53:37,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 17:53:37,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 17:53:37,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:53:37,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:53:37,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:53:37,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:53:37,555 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:53:37,556 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:53:54,926 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:53:55,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:53:55,125 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:53:55,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:53:55 BoogieIcfgContainer [2022-01-10 17:53:55,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:53:55,141 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:53:55,141 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:53:55,142 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:53:55,144 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:53:55" (1/1) ... [2022-01-10 17:53:58,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:53:58 BasicIcfg [2022-01-10 17:53:58,226 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:53:58,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:53:58,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:53:58,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:53:58,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:53:35" (1/4) ... [2022-01-10 17:53:58,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d03f712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:53:58, skipping insertion in model container [2022-01-10 17:53:58,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:53:35" (2/4) ... [2022-01-10 17:53:58,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d03f712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:53:58, skipping insertion in model container [2022-01-10 17:53:58,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:53:55" (3/4) ... [2022-01-10 17:53:58,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d03f712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:53:58, skipping insertion in model container [2022-01-10 17:53:58,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:53:58" (4/4) ... [2022-01-10 17:53:58,231 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product32.cil.cTransformedIcfg [2022-01-10 17:53:58,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:53:58,234 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 17:53:58,304 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:53:58,310 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 17:53:58,310 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 17:53:58,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 17746 states, 17740 states have (on average 1.873618940248027) internal successors, (33238), 17745 states have internal predecessors, (33238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:58,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 17:53:58,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:53:58,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:53:58,504 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:53:58,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:53:58,508 INFO L85 PathProgramCache]: Analyzing trace with hash -669053392, now seen corresponding path program 1 times [2022-01-10 17:53:58,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:53:58,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876984276] [2022-01-10 17:53:58,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:53:58,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:53:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:53:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:53:58,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:53:58,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876984276] [2022-01-10 17:53:58,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876984276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:53:58,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:53:58,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:53:58,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283563005] [2022-01-10 17:53:58,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:53:58,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:53:58,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:53:58,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:53:58,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:53:58,817 INFO L87 Difference]: Start difference. First operand has 17746 states, 17740 states have (on average 1.873618940248027) internal successors, (33238), 17745 states have internal predecessors, (33238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:53:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:53:59,652 INFO L93 Difference]: Finished difference Result 42605 states and 79805 transitions. [2022-01-10 17:53:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:53:59,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-10 17:53:59,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:53:59,761 INFO L225 Difference]: With dead ends: 42605 [2022-01-10 17:53:59,761 INFO L226 Difference]: Without dead ends: 24858 [2022-01-10 17:53:59,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:53:59,799 INFO L933 BasicCegarLoop]: 46564 mSDtfsCounter, 33200 mSDsluCounter, 13357 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33200 SdHoareTripleChecker+Valid, 59921 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:53:59,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33200 Valid, 59921 Invalid, 24 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24858 states. [2022-01-10 17:54:00,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24858 to 17734. [2022-01-10 17:54:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17734 states, 17729 states have (on average 1.8732585030176547) internal successors, (33211), 17733 states have internal predecessors, (33211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17734 states to 17734 states and 33211 transitions. [2022-01-10 17:54:00,479 INFO L78 Accepts]: Start accepts. Automaton has 17734 states and 33211 transitions. Word has length 30 [2022-01-10 17:54:00,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:00,480 INFO L470 AbstractCegarLoop]: Abstraction has 17734 states and 33211 transitions. [2022-01-10 17:54:00,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:00,480 INFO L276 IsEmpty]: Start isEmpty. Operand 17734 states and 33211 transitions. [2022-01-10 17:54:00,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 17:54:00,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:00,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:00,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:54:00,482 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:00,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:00,483 INFO L85 PathProgramCache]: Analyzing trace with hash -246412094, now seen corresponding path program 1 times [2022-01-10 17:54:00,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:00,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144392235] [2022-01-10 17:54:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:00,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:00,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:00,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:00,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144392235] [2022-01-10 17:54:00,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144392235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:00,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:00,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:00,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373094648] [2022-01-10 17:54:00,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:00,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:54:00,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:00,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:54:00,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:00,554 INFO L87 Difference]: Start difference. First operand 17734 states and 33211 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:01,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:01,342 INFO L93 Difference]: Finished difference Result 42507 states and 79607 transitions. [2022-01-10 17:54:01,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:54:01,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-10 17:54:01,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:01,394 INFO L225 Difference]: With dead ends: 42507 [2022-01-10 17:54:01,394 INFO L226 Difference]: Without dead ends: 24822 [2022-01-10 17:54:01,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:54:01,418 INFO L933 BasicCegarLoop]: 46421 mSDtfsCounter, 33099 mSDsluCounter, 13294 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33099 SdHoareTripleChecker+Valid, 59715 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:01,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33099 Valid, 59715 Invalid, 120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 17:54:01,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24822 states. [2022-01-10 17:54:01,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24822 to 17734. [2022-01-10 17:54:01,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17734 states, 17729 states have (on average 1.87184838400361) internal successors, (33186), 17733 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 17:54:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17734 states to 17734 states and 33186 transitions. [2022-01-10 17:54:01,890 INFO L78 Accepts]: Start accepts. Automaton has 17734 states and 33186 transitions. Word has length 35 [2022-01-10 17:54:01,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:01,891 INFO L470 AbstractCegarLoop]: Abstraction has 17734 states and 33186 transitions. [2022-01-10 17:54:01,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:01,894 INFO L276 IsEmpty]: Start isEmpty. Operand 17734 states and 33186 transitions. [2022-01-10 17:54:01,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 17:54:01,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:01,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:01,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:54:01,902 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:01,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:01,903 INFO L85 PathProgramCache]: Analyzing trace with hash -304968763, now seen corresponding path program 1 times [2022-01-10 17:54:01,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:01,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398274194] [2022-01-10 17:54:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:01,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:02,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:02,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398274194] [2022-01-10 17:54:02,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398274194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:02,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:02,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:02,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045617508] [2022-01-10 17:54:02,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:02,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:02,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:02,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:02,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:02,041 INFO L87 Difference]: Start difference. First operand 17734 states and 33186 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:03,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:03,771 INFO L93 Difference]: Finished difference Result 74349 states and 139208 transitions. [2022-01-10 17:54:03,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 17:54:03,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-10 17:54:03,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:04,038 INFO L225 Difference]: With dead ends: 74349 [2022-01-10 17:54:04,038 INFO L226 Difference]: Without dead ends: 56643 [2022-01-10 17:54:04,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:54:04,081 INFO L933 BasicCegarLoop]: 92768 mSDtfsCounter, 99259 mSDsluCounter, 86301 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99259 SdHoareTripleChecker+Valid, 179069 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:04,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99259 Valid, 179069 Invalid, 60 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:04,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56643 states. [2022-01-10 17:54:04,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56643 to 17716. [2022-01-10 17:54:04,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17716 states, 17711 states have (on average 1.8723956862966518) internal successors, (33162), 17715 states have internal predecessors, (33162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17716 states to 17716 states and 33162 transitions. [2022-01-10 17:54:04,862 INFO L78 Accepts]: Start accepts. Automaton has 17716 states and 33162 transitions. Word has length 38 [2022-01-10 17:54:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:04,862 INFO L470 AbstractCegarLoop]: Abstraction has 17716 states and 33162 transitions. [2022-01-10 17:54:04,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:04,862 INFO L276 IsEmpty]: Start isEmpty. Operand 17716 states and 33162 transitions. [2022-01-10 17:54:04,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 17:54:04,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:04,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:04,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:54:04,865 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:04,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:04,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2094880067, now seen corresponding path program 1 times [2022-01-10 17:54:04,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:04,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267053060] [2022-01-10 17:54:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:04,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:04,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:04,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267053060] [2022-01-10 17:54:04,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267053060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:04,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:04,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:54:04,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628440253] [2022-01-10 17:54:04,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:04,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:54:04,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:04,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:54:04,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:04,988 INFO L87 Difference]: Start difference. First operand 17716 states and 33162 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:07,070 INFO L93 Difference]: Finished difference Result 70844 states and 132642 transitions. [2022-01-10 17:54:07,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:54:07,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-01-10 17:54:07,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:07,202 INFO L225 Difference]: With dead ends: 70844 [2022-01-10 17:54:07,202 INFO L226 Difference]: Without dead ends: 53156 [2022-01-10 17:54:07,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:07,232 INFO L933 BasicCegarLoop]: 99434 mSDtfsCounter, 158956 mSDsluCounter, 106184 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158956 SdHoareTripleChecker+Valid, 205618 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:07,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158956 Valid, 205618 Invalid, 178 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [35 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:54:07,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53156 states. [2022-01-10 17:54:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53156 to 17716. [2022-01-10 17:54:07,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17716 states, 17711 states have (on average 1.8720004516966857) internal successors, (33155), 17715 states have internal predecessors, (33155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:07,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17716 states to 17716 states and 33155 transitions. [2022-01-10 17:54:07,900 INFO L78 Accepts]: Start accepts. Automaton has 17716 states and 33155 transitions. Word has length 40 [2022-01-10 17:54:07,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:07,900 INFO L470 AbstractCegarLoop]: Abstraction has 17716 states and 33155 transitions. [2022-01-10 17:54:07,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:07,901 INFO L276 IsEmpty]: Start isEmpty. Operand 17716 states and 33155 transitions. [2022-01-10 17:54:07,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 17:54:07,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:07,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:07,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:54:07,902 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:07,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:07,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1686055842, now seen corresponding path program 1 times [2022-01-10 17:54:07,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:07,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353391048] [2022-01-10 17:54:07,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:07,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:07,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:07,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353391048] [2022-01-10 17:54:07,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353391048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:07,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:07,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:54:07,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404353930] [2022-01-10 17:54:07,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:07,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:07,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:07,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:07,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:07,957 INFO L87 Difference]: Start difference. First operand 17716 states and 33155 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:09,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:09,660 INFO L93 Difference]: Finished difference Result 70723 states and 132412 transitions. [2022-01-10 17:54:09,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 17:54:09,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-01-10 17:54:09,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:09,770 INFO L225 Difference]: With dead ends: 70723 [2022-01-10 17:54:09,771 INFO L226 Difference]: Without dead ends: 53029 [2022-01-10 17:54:09,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:09,799 INFO L933 BasicCegarLoop]: 52921 mSDtfsCounter, 99283 mSDsluCounter, 99225 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99283 SdHoareTripleChecker+Valid, 152146 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:09,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99283 Valid, 152146 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53029 states. [2022-01-10 17:54:10,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53029 to 17720. [2022-01-10 17:54:10,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17720 states, 17715 states have (on average 1.871747106971493) internal successors, (33158), 17719 states have internal predecessors, (33158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17720 states to 17720 states and 33158 transitions. [2022-01-10 17:54:10,437 INFO L78 Accepts]: Start accepts. Automaton has 17720 states and 33158 transitions. Word has length 40 [2022-01-10 17:54:10,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:10,440 INFO L470 AbstractCegarLoop]: Abstraction has 17720 states and 33158 transitions. [2022-01-10 17:54:10,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 17720 states and 33158 transitions. [2022-01-10 17:54:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 17:54:10,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:10,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:10,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:54:10,441 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:10,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1940792387, now seen corresponding path program 1 times [2022-01-10 17:54:10,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:10,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615008255] [2022-01-10 17:54:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:10,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:10,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:10,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:10,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615008255] [2022-01-10 17:54:10,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615008255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:10,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:10,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 17:54:10,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017590697] [2022-01-10 17:54:10,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:10,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 17:54:10,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:10,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 17:54:10,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:10,543 INFO L87 Difference]: Start difference. First operand 17720 states and 33158 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:12,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:12,939 INFO L93 Difference]: Finished difference Result 70939 states and 132786 transitions. [2022-01-10 17:54:12,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 17:54:12,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-01-10 17:54:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:13,044 INFO L225 Difference]: With dead ends: 70939 [2022-01-10 17:54:13,044 INFO L226 Difference]: Without dead ends: 53234 [2022-01-10 17:54:13,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 17:54:13,074 INFO L933 BasicCegarLoop]: 86355 mSDtfsCounter, 172292 mSDsluCounter, 79894 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172292 SdHoareTripleChecker+Valid, 166249 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:13,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172292 Valid, 166249 Invalid, 40 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:13,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53234 states. [2022-01-10 17:54:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53234 to 17712. [2022-01-10 17:54:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17712 states, 17707 states have (on average 1.8719715366804088) internal successors, (33147), 17711 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 17:54:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17712 states to 17712 states and 33147 transitions. [2022-01-10 17:54:13,890 INFO L78 Accepts]: Start accepts. Automaton has 17712 states and 33147 transitions. Word has length 40 [2022-01-10 17:54:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:13,891 INFO L470 AbstractCegarLoop]: Abstraction has 17712 states and 33147 transitions. [2022-01-10 17:54:13,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 17712 states and 33147 transitions. [2022-01-10 17:54:13,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 17:54:13,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:13,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:13,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:54:13,892 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:13,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:13,893 INFO L85 PathProgramCache]: Analyzing trace with hash -311400448, now seen corresponding path program 1 times [2022-01-10 17:54:13,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:13,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104353824] [2022-01-10 17:54:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:13,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:13,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:13,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104353824] [2022-01-10 17:54:13,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104353824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:13,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:13,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:13,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628548939] [2022-01-10 17:54:13,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:13,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:54:13,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:13,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:54:13,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:13,959 INFO L87 Difference]: Start difference. First operand 17712 states and 33147 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:15,406 INFO L93 Difference]: Finished difference Result 49566 states and 92790 transitions. [2022-01-10 17:54:15,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 17:54:15,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-10 17:54:15,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:15,461 INFO L225 Difference]: With dead ends: 49566 [2022-01-10 17:54:15,461 INFO L226 Difference]: Without dead ends: 31882 [2022-01-10 17:54:15,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 17:54:15,483 INFO L933 BasicCegarLoop]: 33109 mSDtfsCounter, 92775 mSDsluCounter, 39836 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92775 SdHoareTripleChecker+Valid, 72945 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:15,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92775 Valid, 72945 Invalid, 55 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:54:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31882 states. [2022-01-10 17:54:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31882 to 17714. [2022-01-10 17:54:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17714 states, 17709 states have (on average 1.8718165904342425) internal successors, (33148), 17713 states have internal predecessors, (33148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:16,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17714 states to 17714 states and 33148 transitions. [2022-01-10 17:54:16,324 INFO L78 Accepts]: Start accepts. Automaton has 17714 states and 33148 transitions. Word has length 41 [2022-01-10 17:54:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:16,324 INFO L470 AbstractCegarLoop]: Abstraction has 17714 states and 33148 transitions. [2022-01-10 17:54:16,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 17714 states and 33148 transitions. [2022-01-10 17:54:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 17:54:16,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:16,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:16,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:54:16,326 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash -639094665, now seen corresponding path program 1 times [2022-01-10 17:54:16,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:16,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676208278] [2022-01-10 17:54:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:16,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:16,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:16,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676208278] [2022-01-10 17:54:16,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676208278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:16,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:16,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:54:16,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520876846] [2022-01-10 17:54:16,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:16,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:54:16,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:16,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:54:16,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:54:16,370 INFO L87 Difference]: Start difference. First operand 17714 states and 33148 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:23,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:54:23,022 INFO L93 Difference]: Finished difference Result 48457 states and 90539 transitions. [2022-01-10 17:54:23,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:54:23,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-01-10 17:54:23,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:54:23,081 INFO L225 Difference]: With dead ends: 48457 [2022-01-10 17:54:23,081 INFO L226 Difference]: Without dead ends: 30787 [2022-01-10 17:54:23,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:54:23,105 INFO L933 BasicCegarLoop]: 33307 mSDtfsCounter, 81729 mSDsluCounter, 23830 mSDsCounter, 0 mSdLazyCounter, 6063 mSolverCounterSat, 1454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81729 SdHoareTripleChecker+Valid, 57137 SdHoareTripleChecker+Invalid, 7517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1454 IncrementalHoareTripleChecker+Valid, 6063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:54:23,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81729 Valid, 57137 Invalid, 7517 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1454 Valid, 6063 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-01-10 17:54:23,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30787 states. [2022-01-10 17:54:23,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30787 to 17714. [2022-01-10 17:54:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17714 states, 17709 states have (on average 1.8365802699192502) internal successors, (32524), 17713 states have internal predecessors, (32524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17714 states to 17714 states and 32524 transitions. [2022-01-10 17:54:23,857 INFO L78 Accepts]: Start accepts. Automaton has 17714 states and 32524 transitions. Word has length 42 [2022-01-10 17:54:23,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:54:23,857 INFO L470 AbstractCegarLoop]: Abstraction has 17714 states and 32524 transitions. [2022-01-10 17:54:23,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:54:23,858 INFO L276 IsEmpty]: Start isEmpty. Operand 17714 states and 32524 transitions. [2022-01-10 17:54:23,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 17:54:23,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:54:23,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:54:23,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:54:23,858 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:54:23,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:54:23,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1835552321, now seen corresponding path program 1 times [2022-01-10 17:54:23,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:54:23,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875005682] [2022-01-10 17:54:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:54:23,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:54:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:54:23,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:54:23,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:54:23,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875005682] [2022-01-10 17:54:23,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875005682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:54:23,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:54:23,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 17:54:23,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761247746] [2022-01-10 17:54:23,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:54:23,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 17:54:23,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:54:23,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 17:54:23,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 17:54:23,943 INFO L87 Difference]: Start difference. First operand 17714 states and 32524 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)