/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec14_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:03:29,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:03:29,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:03:29,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:03:29,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:03:29,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:03:29,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:03:29,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:03:29,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:03:29,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:03:29,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:03:29,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:03:29,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:03:29,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:03:29,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:03:29,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:03:29,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:03:29,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:03:29,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:03:29,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:03:29,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:03:29,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:03:29,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:03:29,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:03:29,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:03:29,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:03:29,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:03:29,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:03:29,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:03:29,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:03:29,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:03:29,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:03:29,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:03:29,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:03:29,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:03:29,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:03:29,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:03:29,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:03:29,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:03:29,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:03:29,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:03:29,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:03:29,660 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:03:29,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:03:29,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:03:29,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:03:29,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:03:29,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:03:29,662 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:03:29,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:03:29,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:03:29,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:03:29,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:03:29,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:03:29,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:03:29,663 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:03:29,663 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:03:29,663 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:03:29,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:03:29,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:03:29,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:03:29,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:03:29,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:03:29,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:03:29,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:03:29,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:03:29,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:03:29,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:03:29,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:03:29,664 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:03:29,664 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:03:29,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:03:29,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:03:29,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:03:29,665 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:03:29,665 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:03:29,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:03:29,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:03:29,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:03:29,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:03:29,892 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:03:29,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product27.cil.c [2022-01-10 12:03:29,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f5e4a1f/e6c917799a0841dca26d96577e302e98/FLAG215471ade [2022-01-10 12:03:30,432 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:03:30,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product27.cil.c [2022-01-10 12:03:30,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f5e4a1f/e6c917799a0841dca26d96577e302e98/FLAG215471ade [2022-01-10 12:03:30,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f5e4a1f/e6c917799a0841dca26d96577e302e98 [2022-01-10 12:03:30,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:03:30,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:03:31,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:03:31,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:03:31,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:03:31,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:03:30" (1/1) ... [2022-01-10 12:03:31,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6814f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:31, skipping insertion in model container [2022-01-10 12:03:31,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:03:30" (1/1) ... [2022-01-10 12:03:31,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:03:31,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:03:31,291 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_product27.cil.c[1546,1559] [2022-01-10 12:03:31,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:03:31,618 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:03:31,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:03:31,633 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_product27.cil.c[1546,1559] [2022-01-10 12:03:31,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:03:31,718 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:03:31,728 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_product27.cil.c[1546,1559] [2022-01-10 12:03:31,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:03:31,803 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:03:31,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:31 WrapperNode [2022-01-10 12:03:31,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:03:31,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:03:31,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:03:31,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:03:31,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:31" (1/1) ... [2022-01-10 12:03:31,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:31" (1/1) ... [2022-01-10 12:03:32,130 INFO L137 Inliner]: procedures = 94, calls = 335, calls flagged for inlining = 188, calls inlined = 751, statements flattened = 22562 [2022-01-10 12:03:32,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:03:32,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:03:32,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:03:32,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:03:32,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:31" (1/1) ... [2022-01-10 12:03:32,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:31" (1/1) ... [2022-01-10 12:03:32,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:31" (1/1) ... [2022-01-10 12:03:32,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:31" (1/1) ... [2022-01-10 12:03:32,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:31" (1/1) ... [2022-01-10 12:03:32,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:31" (1/1) ... [2022-01-10 12:03:32,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:31" (1/1) ... [2022-01-10 12:03:32,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:03:32,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:03:32,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:03:32,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:03:32,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:31" (1/1) ... [2022-01-10 12:03:32,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:03:32,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:03:32,709 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 12:03:32,714 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 12:03:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:03:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:03:32,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:03:32,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:03:32,920 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:03:32,922 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:03:39,521 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:03:39,569 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:03:39,569 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:03:39,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:03:39 BoogieIcfgContainer [2022-01-10 12:03:39,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:03:39,575 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:03:39,575 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:03:39,577 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:03:39,578 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:03:39" (1/1) ... [2022-01-10 12:03:40,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:03:40 BasicIcfg [2022-01-10 12:03:40,793 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:03:40,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:03:40,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:03:40,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:03:40,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:03:30" (1/4) ... [2022-01-10 12:03:40,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c58e7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:03:40, skipping insertion in model container [2022-01-10 12:03:40,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:31" (2/4) ... [2022-01-10 12:03:40,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c58e7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:03:40, skipping insertion in model container [2022-01-10 12:03:40,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:03:39" (3/4) ... [2022-01-10 12:03:40,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c58e7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:03:40, skipping insertion in model container [2022-01-10 12:03:40,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:03:40" (4/4) ... [2022-01-10 12:03:40,798 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product27.cil.cTransformedIcfg [2022-01-10 12:03:40,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:03:40,802 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 12:03:40,858 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:03:40,862 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 12:03:40,863 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 12:03:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 6311 states, 6305 states have (on average 1.8632831086439334) internal successors, (11748), 6310 states have internal predecessors, (11748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 12:03:40,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:40,996 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 12:03:40,996 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 12:03:41,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:41,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1101380394, now seen corresponding path program 1 times [2022-01-10 12:03:41,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:41,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586964030] [2022-01-10 12:03:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:41,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:41,541 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 12:03:41,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:41,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586964030] [2022-01-10 12:03:41,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586964030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:41,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:41,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:03:41,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833459648] [2022-01-10 12:03:41,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:41,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:03:41,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:03:41,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:03:41,611 INFO L87 Difference]: Start difference. First operand has 6311 states, 6305 states have (on average 1.8632831086439334) internal successors, (11748), 6310 states have internal predecessors, (11748), 0 states have call successors, (0), 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 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 12:03:41,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:41,893 INFO L93 Difference]: Finished difference Result 15161 states and 28229 transitions. [2022-01-10 12:03:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:03:41,895 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 12:03:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:41,936 INFO L225 Difference]: With dead ends: 15161 [2022-01-10 12:03:41,937 INFO L226 Difference]: Without dead ends: 8849 [2022-01-10 12:03:41,952 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 12:03:41,954 INFO L933 BasicCegarLoop]: 16478 mSDtfsCounter, 11710 mSDsluCounter, 4761 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11710 SdHoareTripleChecker+Valid, 21239 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:41,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11710 Valid, 21239 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:03:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8849 states. [2022-01-10 12:03:42,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8849 to 6299. [2022-01-10 12:03:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6299 states, 6294 states have (on average 1.8622497616777884) internal successors, (11721), 6298 states have internal predecessors, (11721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6299 states to 6299 states and 11721 transitions. [2022-01-10 12:03:42,152 INFO L78 Accepts]: Start accepts. Automaton has 6299 states and 11721 transitions. Word has length 48 [2022-01-10 12:03:42,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:42,152 INFO L470 AbstractCegarLoop]: Abstraction has 6299 states and 11721 transitions. [2022-01-10 12:03:42,152 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 12:03:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 6299 states and 11721 transitions. [2022-01-10 12:03:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 12:03:42,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:42,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:03:42,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:03:42,156 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 12:03:42,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:42,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1235694876, now seen corresponding path program 1 times [2022-01-10 12:03:42,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:42,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615903570] [2022-01-10 12:03:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:42,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:42,224 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 12:03:42,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:42,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615903570] [2022-01-10 12:03:42,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615903570] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:42,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:42,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:03:42,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526017107] [2022-01-10 12:03:42,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:42,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:03:42,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:42,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:03:42,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:03:42,227 INFO L87 Difference]: Start difference. First operand 6299 states and 11721 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:42,582 INFO L93 Difference]: Finished difference Result 15063 states and 28031 transitions. [2022-01-10 12:03:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:03:42,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 12:03:42,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:42,615 INFO L225 Difference]: With dead ends: 15063 [2022-01-10 12:03:42,615 INFO L226 Difference]: Without dead ends: 8813 [2022-01-10 12:03:42,624 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 12:03:42,625 INFO L933 BasicCegarLoop]: 16335 mSDtfsCounter, 11609 mSDsluCounter, 4698 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11609 SdHoareTripleChecker+Valid, 21033 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:42,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11609 Valid, 21033 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:03:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8813 states. [2022-01-10 12:03:42,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8813 to 6299. [2022-01-10 12:03:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6299 states, 6294 states have (on average 1.8582777248172864) internal successors, (11696), 6298 states have internal predecessors, (11696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6299 states to 6299 states and 11696 transitions. [2022-01-10 12:03:42,775 INFO L78 Accepts]: Start accepts. Automaton has 6299 states and 11696 transitions. Word has length 53 [2022-01-10 12:03:42,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:42,775 INFO L470 AbstractCegarLoop]: Abstraction has 6299 states and 11696 transitions. [2022-01-10 12:03:42,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:42,776 INFO L276 IsEmpty]: Start isEmpty. Operand 6299 states and 11696 transitions. [2022-01-10 12:03:42,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 12:03:42,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:42,778 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 12:03:42,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:03:42,778 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 12:03:42,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:42,779 INFO L85 PathProgramCache]: Analyzing trace with hash 346370431, now seen corresponding path program 1 times [2022-01-10 12:03:42,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:42,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089745590] [2022-01-10 12:03:42,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:42,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:42,863 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 12:03:42,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:42,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089745590] [2022-01-10 12:03:42,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089745590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:42,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:42,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:03:42,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146497261] [2022-01-10 12:03:42,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:42,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:03:42,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:42,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:03:42,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:03:42,865 INFO L87 Difference]: Start difference. First operand 6299 states and 11696 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 12:03:43,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:43,744 INFO L93 Difference]: Finished difference Result 26322 states and 48950 transitions. [2022-01-10 12:03:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:03:43,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 12:03:43,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:43,820 INFO L225 Difference]: With dead ends: 26322 [2022-01-10 12:03:43,821 INFO L226 Difference]: Without dead ends: 20051 [2022-01-10 12:03:43,839 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 12:03:43,841 INFO L933 BasicCegarLoop]: 32596 mSDtfsCounter, 34768 mSDsluCounter, 30477 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34768 SdHoareTripleChecker+Valid, 63073 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:43,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34768 Valid, 63073 Invalid, 69 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:03:43,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20051 states. [2022-01-10 12:03:44,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20051 to 6281. [2022-01-10 12:03:44,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6281 states, 6276 states have (on average 1.8597833014659018) internal successors, (11672), 6280 states have internal predecessors, (11672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11672 transitions. [2022-01-10 12:03:44,140 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11672 transitions. Word has length 56 [2022-01-10 12:03:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:44,140 INFO L470 AbstractCegarLoop]: Abstraction has 6281 states and 11672 transitions. [2022-01-10 12:03:44,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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 12:03:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11672 transitions. [2022-01-10 12:03:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:03:44,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:44,143 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 12:03:44,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:03:44,145 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 12:03:44,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:44,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2116573912, now seen corresponding path program 1 times [2022-01-10 12:03:44,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:44,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900622409] [2022-01-10 12:03:44,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:44,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:44,245 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 12:03:44,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:44,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900622409] [2022-01-10 12:03:44,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900622409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:44,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:44,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:03:44,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806413127] [2022-01-10 12:03:44,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:44,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:03:44,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:44,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:03:44,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:03:44,247 INFO L87 Difference]: Start difference. First operand 6281 states and 11672 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 12:03:44,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:44,740 INFO L93 Difference]: Finished difference Result 24983 states and 46467 transitions. [2022-01-10 12:03:44,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:03:44,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 12:03:44,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:44,778 INFO L225 Difference]: With dead ends: 24983 [2022-01-10 12:03:44,778 INFO L226 Difference]: Without dead ends: 18724 [2022-01-10 12:03:44,795 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 12:03:44,796 INFO L933 BasicCegarLoop]: 18544 mSDtfsCounter, 34825 mSDsluCounter, 34761 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34825 SdHoareTripleChecker+Valid, 53305 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 12:03:44,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34825 Valid, 53305 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:03:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18724 states. [2022-01-10 12:03:44,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18724 to 6285. [2022-01-10 12:03:45,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6285 states, 6280 states have (on average 1.859076433121019) internal successors, (11675), 6284 states have internal predecessors, (11675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:45,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6285 states to 6285 states and 11675 transitions. [2022-01-10 12:03:45,022 INFO L78 Accepts]: Start accepts. Automaton has 6285 states and 11675 transitions. Word has length 58 [2022-01-10 12:03:45,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:45,022 INFO L470 AbstractCegarLoop]: Abstraction has 6285 states and 11675 transitions. [2022-01-10 12:03:45,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 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 12:03:45,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6285 states and 11675 transitions. [2022-01-10 12:03:45,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:03:45,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:45,025 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 12:03:45,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:03:45,025 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 12:03:45,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash 933226615, now seen corresponding path program 1 times [2022-01-10 12:03:45,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:45,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441026839] [2022-01-10 12:03:45,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:45,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:45,151 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 12:03:45,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:45,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441026839] [2022-01-10 12:03:45,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441026839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:45,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:45,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:03:45,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636527178] [2022-01-10 12:03:45,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:45,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:03:45,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:45,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:03:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:03:45,155 INFO L87 Difference]: Start difference. First operand 6285 states and 11675 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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 12:03:45,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:45,843 INFO L93 Difference]: Finished difference Result 25199 states and 46850 transitions. [2022-01-10 12:03:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:03:45,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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 12:03:45,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:45,885 INFO L225 Difference]: With dead ends: 25199 [2022-01-10 12:03:45,885 INFO L226 Difference]: Without dead ends: 18929 [2022-01-10 12:03:45,902 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 12:03:45,903 INFO L933 BasicCegarLoop]: 35172 mSDtfsCounter, 42108 mSDsluCounter, 42484 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42108 SdHoareTripleChecker+Valid, 77656 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:45,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42108 Valid, 77656 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:03:45,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18929 states. [2022-01-10 12:03:46,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18929 to 6277. [2022-01-10 12:03:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6277 states, 6272 states have (on average 1.8595344387755102) internal successors, (11663), 6276 states have internal predecessors, (11663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:46,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6277 states to 6277 states and 11663 transitions. [2022-01-10 12:03:46,243 INFO L78 Accepts]: Start accepts. Automaton has 6277 states and 11663 transitions. Word has length 58 [2022-01-10 12:03:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:46,248 INFO L470 AbstractCegarLoop]: Abstraction has 6277 states and 11663 transitions. [2022-01-10 12:03:46,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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 12:03:46,249 INFO L276 IsEmpty]: Start isEmpty. Operand 6277 states and 11663 transitions. [2022-01-10 12:03:46,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 12:03:46,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:46,251 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 12:03:46,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:03:46,251 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 12:03:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:46,251 INFO L85 PathProgramCache]: Analyzing trace with hash -477138879, now seen corresponding path program 1 times [2022-01-10 12:03:46,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:46,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253693308] [2022-01-10 12:03:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:46,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:46,314 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 12:03:46,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:46,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253693308] [2022-01-10 12:03:46,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253693308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:46,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:46,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:03:46,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265041664] [2022-01-10 12:03:46,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:46,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:03:46,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:46,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:03:46,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:03:46,316 INFO L87 Difference]: Start difference. First operand 6277 states and 11663 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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 12:03:46,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:46,682 INFO L93 Difference]: Finished difference Result 17548 states and 32629 transitions. [2022-01-10 12:03:46,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:03:46,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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 12:03:46,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:46,723 INFO L225 Difference]: With dead ends: 17548 [2022-01-10 12:03:46,723 INFO L226 Difference]: Without dead ends: 11299 [2022-01-10 12:03:46,734 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 12:03:46,735 INFO L933 BasicCegarLoop]: 11625 mSDtfsCounter, 44233 mSDsluCounter, 14037 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44233 SdHoareTripleChecker+Valid, 25662 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:46,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44233 Valid, 25662 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:03:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11299 states. [2022-01-10 12:03:46,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11299 to 6279. [2022-01-10 12:03:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6279 states, 6274 states have (on average 1.8591010519604718) internal successors, (11664), 6278 states have internal predecessors, (11664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6279 states to 6279 states and 11664 transitions. [2022-01-10 12:03:46,977 INFO L78 Accepts]: Start accepts. Automaton has 6279 states and 11664 transitions. Word has length 59 [2022-01-10 12:03:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:46,978 INFO L470 AbstractCegarLoop]: Abstraction has 6279 states and 11664 transitions. [2022-01-10 12:03:46,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 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 12:03:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 6279 states and 11664 transitions. [2022-01-10 12:03:46,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:03:46,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:46,980 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 12:03:46,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:03:46,980 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 12:03:46,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash 684617458, now seen corresponding path program 1 times [2022-01-10 12:03:46,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:46,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060824002] [2022-01-10 12:03:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:46,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:03:47,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:47,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060824002] [2022-01-10 12:03:47,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060824002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:47,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:47,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:03:47,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976739273] [2022-01-10 12:03:47,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:47,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:03:47,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:47,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:03:47,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:03:47,026 INFO L87 Difference]: Start difference. First operand 6279 states and 11664 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:48,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:48,570 INFO L93 Difference]: Finished difference Result 17782 states and 33080 transitions. [2022-01-10 12:03:48,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:03:48,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 12:03:48,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:48,590 INFO L225 Difference]: With dead ends: 17782 [2022-01-10 12:03:48,590 INFO L226 Difference]: Without dead ends: 11539 [2022-01-10 12:03:48,601 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 12:03:48,604 INFO L933 BasicCegarLoop]: 11634 mSDtfsCounter, 31191 mSDsluCounter, 9733 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31191 SdHoareTripleChecker+Valid, 21367 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:48,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31191 Valid, 21367 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 12:03:48,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11539 states. [2022-01-10 12:03:48,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11539 to 6279. [2022-01-10 12:03:48,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6279 states, 6274 states have (on average 1.8329614281160345) internal successors, (11500), 6278 states have internal predecessors, (11500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:48,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6279 states to 6279 states and 11500 transitions. [2022-01-10 12:03:48,818 INFO L78 Accepts]: Start accepts. Automaton has 6279 states and 11500 transitions. Word has length 60 [2022-01-10 12:03:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:48,819 INFO L470 AbstractCegarLoop]: Abstraction has 6279 states and 11500 transitions. [2022-01-10 12:03:48,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:48,820 INFO L276 IsEmpty]: Start isEmpty. Operand 6279 states and 11500 transitions. [2022-01-10 12:03:48,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:03:48,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:48,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:03:48,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:03:48,822 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 12:03:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1966634780, now seen corresponding path program 1 times [2022-01-10 12:03:48,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:48,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838518825] [2022-01-10 12:03:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:48,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:48,883 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 12:03:48,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:48,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838518825] [2022-01-10 12:03:48,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838518825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:48,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:48,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:03:48,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401823569] [2022-01-10 12:03:48,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:48,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:03:48,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:03:48,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:03:48,884 INFO L87 Difference]: Start difference. First operand 6279 states and 11500 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:54,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:54,578 INFO L93 Difference]: Finished difference Result 66274 states and 122673 transitions. [2022-01-10 12:03:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:03:54,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:03:54,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:54,700 INFO L225 Difference]: With dead ends: 66274 [2022-01-10 12:03:54,700 INFO L226 Difference]: Without dead ends: 60049 [2022-01-10 12:03:54,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-10 12:03:54,722 INFO L933 BasicCegarLoop]: 56033 mSDtfsCounter, 72985 mSDsluCounter, 171270 mSDsCounter, 0 mSdLazyCounter, 4949 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72985 SdHoareTripleChecker+Valid, 227303 SdHoareTripleChecker+Invalid, 5354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 4949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:54,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72985 Valid, 227303 Invalid, 5354 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [405 Valid, 4949 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 12:03:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60049 states. [2022-01-10 12:03:55,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60049 to 12450. [2022-01-10 12:03:55,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12450 states, 12445 states have (on average 1.8338288469264765) internal successors, (22822), 12449 states have internal predecessors, (22822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12450 states to 12450 states and 22822 transitions. [2022-01-10 12:03:55,382 INFO L78 Accepts]: Start accepts. Automaton has 12450 states and 22822 transitions. Word has length 72 [2022-01-10 12:03:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:55,382 INFO L470 AbstractCegarLoop]: Abstraction has 12450 states and 22822 transitions. [2022-01-10 12:03:55,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:55,383 INFO L276 IsEmpty]: Start isEmpty. Operand 12450 states and 22822 transitions. [2022-01-10 12:03:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 12:03:55,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:55,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:03:55,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:03:55,388 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 12:03:55,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:55,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2096805018, now seen corresponding path program 1 times [2022-01-10 12:03:55,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:55,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834468785] [2022-01-10 12:03:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:55,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:55,480 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 12:03:55,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:55,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834468785] [2022-01-10 12:03:55,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834468785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:55,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:55,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:03:55,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670340052] [2022-01-10 12:03:55,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:55,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:03:55,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:55,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:03:55,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:03:55,484 INFO L87 Difference]: Start difference. First operand 12450 states and 22822 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:59,700 INFO L93 Difference]: Finished difference Result 65313 states and 119680 transitions. [2022-01-10 12:03:59,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:03:59,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 12:03:59,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:59,803 INFO L225 Difference]: With dead ends: 65313 [2022-01-10 12:03:59,804 INFO L226 Difference]: Without dead ends: 52960 [2022-01-10 12:03:59,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:03:59,830 INFO L933 BasicCegarLoop]: 25135 mSDtfsCounter, 50868 mSDsluCounter, 46878 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50868 SdHoareTripleChecker+Valid, 72013 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:59,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50868 Valid, 72013 Invalid, 2887 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [374 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 12:03:59,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52960 states. [2022-01-10 12:04:00,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52960 to 17472. [2022-01-10 12:04:00,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17472 states, 17467 states have (on average 1.831682601477071) internal successors, (31994), 17471 states have internal predecessors, (31994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17472 states to 17472 states and 31994 transitions. [2022-01-10 12:04:00,815 INFO L78 Accepts]: Start accepts. Automaton has 17472 states and 31994 transitions. Word has length 74 [2022-01-10 12:04:00,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:00,815 INFO L470 AbstractCegarLoop]: Abstraction has 17472 states and 31994 transitions. [2022-01-10 12:04:00,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:00,815 INFO L276 IsEmpty]: Start isEmpty. Operand 17472 states and 31994 transitions. [2022-01-10 12:04:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 12:04:00,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:00,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:00,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:04:00,820 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:00,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:00,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1771953449, now seen corresponding path program 1 times [2022-01-10 12:04:00,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:00,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463646532] [2022-01-10 12:04:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:00,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:00,885 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 12:04:00,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:00,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463646532] [2022-01-10 12:04:00,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463646532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:00,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:00,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:04:00,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618737582] [2022-01-10 12:04:00,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:00,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:04:00,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:00,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:04:00,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:04:00,887 INFO L87 Difference]: Start difference. First operand 17472 states and 31994 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:05,308 INFO L93 Difference]: Finished difference Result 71428 states and 131640 transitions. [2022-01-10 12:04:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:04:05,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-10 12:04:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:05,416 INFO L225 Difference]: With dead ends: 71428 [2022-01-10 12:04:05,416 INFO L226 Difference]: Without dead ends: 54014 [2022-01-10 12:04:05,444 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 12:04:05,445 INFO L933 BasicCegarLoop]: 34663 mSDtfsCounter, 19527 mSDsluCounter, 32643 mSDsCounter, 0 mSdLazyCounter, 3183 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19527 SdHoareTripleChecker+Valid, 67306 SdHoareTripleChecker+Invalid, 3473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 3183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:05,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19527 Valid, 67306 Invalid, 3473 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [290 Valid, 3183 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 12:04:05,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54014 states. [2022-01-10 12:04:06,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54014 to 30034. [2022-01-10 12:04:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30034 states, 30029 states have (on average 1.8162442971793933) internal successors, (54540), 30033 states have internal predecessors, (54540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30034 states to 30034 states and 54540 transitions. [2022-01-10 12:04:06,868 INFO L78 Accepts]: Start accepts. Automaton has 30034 states and 54540 transitions. Word has length 75 [2022-01-10 12:04:06,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:06,868 INFO L470 AbstractCegarLoop]: Abstraction has 30034 states and 54540 transitions. [2022-01-10 12:04:06,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand 30034 states and 54540 transitions. [2022-01-10 12:04:06,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 12:04:06,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:06,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:06,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:04:06,872 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:06,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:06,872 INFO L85 PathProgramCache]: Analyzing trace with hash 977116336, now seen corresponding path program 1 times [2022-01-10 12:04:06,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:06,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830068993] [2022-01-10 12:04:06,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:06,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:07,135 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 12:04:07,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:07,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830068993] [2022-01-10 12:04:07,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830068993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:07,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:07,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:04:07,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045821617] [2022-01-10 12:04:07,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:07,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:04:07,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:07,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:04:07,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:04:07,137 INFO L87 Difference]: Start difference. First operand 30034 states and 54540 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:08,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:08,603 INFO L93 Difference]: Finished difference Result 62348 states and 113314 transitions. [2022-01-10 12:04:08,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:04:08,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-10 12:04:08,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:08,656 INFO L225 Difference]: With dead ends: 62348 [2022-01-10 12:04:08,657 INFO L226 Difference]: Without dead ends: 32339 [2022-01-10 12:04:08,694 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 12:04:08,697 INFO L933 BasicCegarLoop]: 13091 mSDtfsCounter, 35012 mSDsluCounter, 20247 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35012 SdHoareTripleChecker+Valid, 33338 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:08,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35012 Valid, 33338 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:04:08,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32339 states. [2022-01-10 12:04:09,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32339 to 19585. [2022-01-10 12:04:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19585 states, 19580 states have (on average 1.816394279877426) internal successors, (35565), 19584 states have internal predecessors, (35565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:09,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19585 states to 19585 states and 35565 transitions. [2022-01-10 12:04:09,579 INFO L78 Accepts]: Start accepts. Automaton has 19585 states and 35565 transitions. Word has length 75 [2022-01-10 12:04:09,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:09,580 INFO L470 AbstractCegarLoop]: Abstraction has 19585 states and 35565 transitions. [2022-01-10 12:04:09,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:09,580 INFO L276 IsEmpty]: Start isEmpty. Operand 19585 states and 35565 transitions. [2022-01-10 12:04:09,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 12:04:09,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:09,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:09,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:04:09,587 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:09,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:09,587 INFO L85 PathProgramCache]: Analyzing trace with hash -140298907, now seen corresponding path program 1 times [2022-01-10 12:04:09,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:09,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329496636] [2022-01-10 12:04:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:09,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:09,725 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 12:04:09,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:09,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329496636] [2022-01-10 12:04:09,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329496636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:09,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:09,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:04:09,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418513643] [2022-01-10 12:04:09,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:09,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:04:09,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:09,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:04:09,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:04:09,727 INFO L87 Difference]: Start difference. First operand 19585 states and 35565 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:15,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:15,891 INFO L93 Difference]: Finished difference Result 158604 states and 288518 transitions. [2022-01-10 12:04:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:04:15,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 12:04:15,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:16,296 INFO L225 Difference]: With dead ends: 158604 [2022-01-10 12:04:16,296 INFO L226 Difference]: Without dead ends: 139065 [2022-01-10 12:04:16,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:04:16,347 INFO L933 BasicCegarLoop]: 21224 mSDtfsCounter, 77340 mSDsluCounter, 56026 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77340 SdHoareTripleChecker+Valid, 77250 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:16,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77340 Valid, 77250 Invalid, 532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [238 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:04:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139065 states. [2022-01-10 12:04:18,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139065 to 37948. [2022-01-10 12:04:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37948 states, 37943 states have (on average 1.8162770471496719) internal successors, (68915), 37947 states have internal predecessors, (68915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:18,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37948 states to 37948 states and 68915 transitions. [2022-01-10 12:04:18,910 INFO L78 Accepts]: Start accepts. Automaton has 37948 states and 68915 transitions. Word has length 77 [2022-01-10 12:04:18,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:18,910 INFO L470 AbstractCegarLoop]: Abstraction has 37948 states and 68915 transitions. [2022-01-10 12:04:18,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:18,911 INFO L276 IsEmpty]: Start isEmpty. Operand 37948 states and 68915 transitions. [2022-01-10 12:04:18,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 12:04:18,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:18,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:18,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:04:18,913 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:18,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:18,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1810001348, now seen corresponding path program 1 times [2022-01-10 12:04:18,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:18,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662061374] [2022-01-10 12:04:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:18,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:18,969 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 12:04:18,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:18,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662061374] [2022-01-10 12:04:18,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662061374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:18,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:18,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:04:18,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448452783] [2022-01-10 12:04:18,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:18,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:04:18,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:18,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:04:18,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:04:18,971 INFO L87 Difference]: Start difference. First operand 37948 states and 68915 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:24,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:24,700 INFO L93 Difference]: Finished difference Result 109824 states and 200913 transitions. [2022-01-10 12:04:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:04:24,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 12:04:24,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:24,841 INFO L225 Difference]: With dead ends: 109824 [2022-01-10 12:04:24,841 INFO L226 Difference]: Without dead ends: 89459 [2022-01-10 12:04:24,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-10 12:04:24,871 INFO L933 BasicCegarLoop]: 24518 mSDtfsCounter, 65508 mSDsluCounter, 78604 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65508 SdHoareTripleChecker+Valid, 103122 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:24,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65508 Valid, 103122 Invalid, 2048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [356 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 12:04:24,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89459 states. [2022-01-10 12:04:27,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89459 to 37948. [2022-01-10 12:04:27,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37948 states, 37943 states have (on average 1.815011991671718) internal successors, (68867), 37947 states have internal predecessors, (68867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:27,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37948 states to 37948 states and 68867 transitions. [2022-01-10 12:04:27,284 INFO L78 Accepts]: Start accepts. Automaton has 37948 states and 68867 transitions. Word has length 77 [2022-01-10 12:04:27,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:27,284 INFO L470 AbstractCegarLoop]: Abstraction has 37948 states and 68867 transitions. [2022-01-10 12:04:27,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 37948 states and 68867 transitions. [2022-01-10 12:04:27,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 12:04:27,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:27,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:27,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:04:27,286 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:27,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:27,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2085407132, now seen corresponding path program 1 times [2022-01-10 12:04:27,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:27,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27239231] [2022-01-10 12:04:27,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:27,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:27,337 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 12:04:27,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:27,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27239231] [2022-01-10 12:04:27,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27239231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:27,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:27,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:04:27,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471982276] [2022-01-10 12:04:27,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:27,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:04:27,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:27,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:04:27,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:04:27,338 INFO L87 Difference]: Start difference. First operand 37948 states and 68867 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:04:30,641 INFO L93 Difference]: Finished difference Result 79256 states and 143118 transitions. [2022-01-10 12:04:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:04:30,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 12:04:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:04:30,736 INFO L225 Difference]: With dead ends: 79256 [2022-01-10 12:04:30,736 INFO L226 Difference]: Without dead ends: 59073 [2022-01-10 12:04:30,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:04:30,761 INFO L933 BasicCegarLoop]: 20160 mSDtfsCounter, 16619 mSDsluCounter, 42869 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16619 SdHoareTripleChecker+Valid, 63029 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:04:30,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16619 Valid, 63029 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:04:30,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59073 states. [2022-01-10 12:04:32,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59073 to 38044. [2022-01-10 12:04:32,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38044 states, 38039 states have (on average 1.812955125003286) internal successors, (68963), 38043 states have internal predecessors, (68963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:32,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38044 states to 38044 states and 68963 transitions. [2022-01-10 12:04:32,874 INFO L78 Accepts]: Start accepts. Automaton has 38044 states and 68963 transitions. Word has length 79 [2022-01-10 12:04:32,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:32,874 INFO L470 AbstractCegarLoop]: Abstraction has 38044 states and 68963 transitions. [2022-01-10 12:04:32,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:04:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 38044 states and 68963 transitions. [2022-01-10 12:04:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 12:04:32,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:32,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:04:32,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:04:32,877 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:32,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:32,877 INFO L85 PathProgramCache]: Analyzing trace with hash 849591454, now seen corresponding path program 1 times [2022-01-10 12:04:32,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:32,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388167192] [2022-01-10 12:04:32,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:32,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:32,915 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 12:04:32,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:32,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388167192] [2022-01-10 12:04:32,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388167192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:32,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:32,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:04:32,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525336033] [2022-01-10 12:04:32,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:32,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:04:32,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:32,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:04:32,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:04:32,916 INFO L87 Difference]: Start difference. First operand 38044 states and 68963 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)