/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:48:56,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:48:56,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:48:56,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:48:56,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:48:56,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:48:56,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:48:56,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:48:56,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:48:56,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:48:56,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:48:56,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:48:56,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:48:56,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:48:56,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:48:56,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:48:56,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:48:56,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:48:56,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:48:56,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:48:56,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:48:56,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:48:56,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:48:56,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:48:56,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:48:56,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:48:56,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:48:56,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:48:56,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:48:56,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:48:56,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:48:56,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:48:56,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:48:56,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:48:56,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:48:56,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:48:56,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:48:56,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:48:56,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:48:56,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:48:56,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:48:56,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:48:56,579 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:48:56,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:48:56,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:48:56,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:48:56,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:48:56,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:48:56,581 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:48:56,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:48:56,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:48:56,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:48:56,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:48:56,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:48:56,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:48:56,582 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:48:56,583 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:48:56,583 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:48:56,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:48:56,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:48:56,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:48:56,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:48:56,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:48:56,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:48:56,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:48:56,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:48:56,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:48:56,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:48:56,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:48:56,584 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:48:56,584 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:48:56,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:48:56,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:48:56,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:48:56,586 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:48:56,586 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:48:56,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:48:56,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:48:56,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:48:56,850 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:48:56,851 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:48:56,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-11 00:48:56,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2f79f8f/786054415cbc45909fb5d0057bb2d3d5/FLAGf3edc1bb5 [2022-01-11 00:48:57,386 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:48:57,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-01-11 00:48:57,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2f79f8f/786054415cbc45909fb5d0057bb2d3d5/FLAGf3edc1bb5 [2022-01-11 00:48:57,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2f79f8f/786054415cbc45909fb5d0057bb2d3d5 [2022-01-11 00:48:57,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:48:57,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:48:57,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:48:57,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:48:57,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:48:57,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:48:57" (1/1) ... [2022-01-11 00:48:57,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd6244a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:48:57, skipping insertion in model container [2022-01-11 00:48:57,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:48:57" (1/1) ... [2022-01-11 00:48:57,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:48:57,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:48:58,141 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7180,7193] [2022-01-11 00:48:58,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9491,9504] [2022-01-11 00:48:58,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:48:58,174 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:48:58,220 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7180,7193] [2022-01-11 00:48:58,228 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9491,9504] [2022-01-11 00:48:58,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:48:58,251 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:48:58,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:48:58 WrapperNode [2022-01-11 00:48:58,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:48:58,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:48:58,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:48:58,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:48:58,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:48:58" (1/1) ... [2022-01-11 00:48:58,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:48:58" (1/1) ... [2022-01-11 00:48:58,306 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 454 [2022-01-11 00:48:58,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:48:58,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:48:58,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:48:58,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:48:58,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:48:58" (1/1) ... [2022-01-11 00:48:58,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:48:58" (1/1) ... [2022-01-11 00:48:58,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:48:58" (1/1) ... [2022-01-11 00:48:58,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:48:58" (1/1) ... [2022-01-11 00:48:58,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:48:58" (1/1) ... [2022-01-11 00:48:58,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:48:58" (1/1) ... [2022-01-11 00:48:58,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:48:58" (1/1) ... [2022-01-11 00:48:58,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:48:58,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:48:58,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:48:58,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:48:58,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:48:58" (1/1) ... [2022-01-11 00:48:58,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:48:58,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:48:58,387 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) [2022-01-11 00:48:58,389 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 [2022-01-11 00:48:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:48:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:48:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:48:58,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:48:58,582 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:48:58,584 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:48:59,093 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:48:59,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:48:59,104 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 00:48:59,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:48:59 BoogieIcfgContainer [2022-01-11 00:48:59,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:48:59,107 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:48:59,107 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:48:59,108 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:48:59,111 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:48:59" (1/1) ... [2022-01-11 00:48:59,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:48:59 BasicIcfg [2022-01-11 00:48:59,513 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:48:59,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:48:59,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:48:59,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:48:59,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:48:57" (1/4) ... [2022-01-11 00:48:59,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf6b5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:48:59, skipping insertion in model container [2022-01-11 00:48:59,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:48:58" (2/4) ... [2022-01-11 00:48:59,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf6b5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:48:59, skipping insertion in model container [2022-01-11 00:48:59,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:48:59" (3/4) ... [2022-01-11 00:48:59,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf6b5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:48:59, skipping insertion in model container [2022-01-11 00:48:59,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:48:59" (4/4) ... [2022-01-11 00:48:59,522 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 00:48:59,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:48:59,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 00:48:59,577 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:48:59,589 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 [2022-01-11 00:48:59,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 00:48:59,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 103 states have (on average 1.7572815533980584) internal successors, (181), 105 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:48:59,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-11 00:48:59,609 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:48:59,610 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] [2022-01-11 00:48:59,610 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:48:59,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:48:59,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1186396954, now seen corresponding path program 1 times [2022-01-11 00:48:59,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:48:59,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987808340] [2022-01-11 00:48:59,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:48:59,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:48:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:49:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:49:00,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:49:00,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987808340] [2022-01-11 00:49:00,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987808340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:49:00,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:49:00,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:49:00,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999343327] [2022-01-11 00:49:00,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:49:00,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:49:00,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:49:00,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:49:00,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:49:00,255 INFO L87 Difference]: Start difference. First operand has 106 states, 103 states have (on average 1.7572815533980584) internal successors, (181), 105 states have internal predecessors, (181), 0 states have call successors, (0), 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) [2022-01-11 00:49:00,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:49:00,765 INFO L93 Difference]: Finished difference Result 204 states and 332 transitions. [2022-01-11 00:49:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:49:00,768 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 [2022-01-11 00:49:00,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:49:00,777 INFO L225 Difference]: With dead ends: 204 [2022-01-11 00:49:00,777 INFO L226 Difference]: Without dead ends: 153 [2022-01-11 00:49:00,780 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 [2022-01-11 00:49:00,785 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 95 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 00:49:00,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 351 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 00:49:00,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-01-11 00:49:00,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2022-01-11 00:49:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 149 states have (on average 1.4228187919463087) internal successors, (212), 150 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:49:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 212 transitions. [2022-01-11 00:49:00,844 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 212 transitions. Word has length 48 [2022-01-11 00:49:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:49:00,845 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 212 transitions. [2022-01-11 00:49:00,846 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) [2022-01-11 00:49:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 212 transitions. [2022-01-11 00:49:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-11 00:49:00,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:49:00,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:49:00,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:49:00,848 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:49:00,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:49:00,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1877353874, now seen corresponding path program 1 times [2022-01-11 00:49:00,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:49:00,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661323322] [2022-01-11 00:49:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:49:00,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:49:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:49:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:49:01,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:49:01,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661323322] [2022-01-11 00:49:01,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661323322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:49:01,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:49:01,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:49:01,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818631749] [2022-01-11 00:49:01,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:49:01,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:49:01,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:49:01,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:49:01,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:49:01,095 INFO L87 Difference]: Start difference. First operand 151 states and 212 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:49:01,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:49:01,319 INFO L93 Difference]: Finished difference Result 276 states and 401 transitions. [2022-01-11 00:49:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:49:01,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-01-11 00:49:01,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:49:01,325 INFO L225 Difference]: With dead ends: 276 [2022-01-11 00:49:01,325 INFO L226 Difference]: Without dead ends: 195 [2022-01-11 00:49:01,326 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 [2022-01-11 00:49:01,327 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:49:01,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 301 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:49:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-01-11 00:49:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2022-01-11 00:49:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 191 states have (on average 1.4397905759162304) internal successors, (275), 192 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:49:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 275 transitions. [2022-01-11 00:49:01,408 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 275 transitions. Word has length 49 [2022-01-11 00:49:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:49:01,408 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 275 transitions. [2022-01-11 00:49:01,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:49:01,409 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 275 transitions. [2022-01-11 00:49:01,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-11 00:49:01,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:49:01,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:49:01,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:49:01,417 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:49:01,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:49:01,418 INFO L85 PathProgramCache]: Analyzing trace with hash 728594009, now seen corresponding path program 1 times [2022-01-11 00:49:01,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:49:01,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264977567] [2022-01-11 00:49:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:49:01,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:49:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:49:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:49:01,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:49:01,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264977567] [2022-01-11 00:49:01,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264977567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:49:01,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:49:01,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 00:49:01,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545918617] [2022-01-11 00:49:01,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:49:01,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 00:49:01,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:49:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 00:49:01,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:49:01,811 INFO L87 Difference]: Start difference. First operand 193 states and 275 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:49:05,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:08,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:11,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:13,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:15,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:49:15,818 INFO L93 Difference]: Finished difference Result 1246 states and 1840 transitions. [2022-01-11 00:49:15,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 00:49:15,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-01-11 00:49:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:49:15,822 INFO L225 Difference]: With dead ends: 1246 [2022-01-11 00:49:15,823 INFO L226 Difference]: Without dead ends: 1080 [2022-01-11 00:49:15,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-11 00:49:15,825 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 583 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 16 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:49:15,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 1329 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 620 Invalid, 5 Unknown, 0 Unchecked, 13.3s Time] [2022-01-11 00:49:15,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2022-01-11 00:49:16,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 609. [2022-01-11 00:49:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 607 states have (on average 1.471169686985173) internal successors, (893), 608 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:49:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 893 transitions. [2022-01-11 00:49:16,005 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 893 transitions. Word has length 50 [2022-01-11 00:49:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:49:16,006 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 893 transitions. [2022-01-11 00:49:16,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:49:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 893 transitions. [2022-01-11 00:49:16,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 00:49:16,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:49:16,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:49:16,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:49:16,014 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:49:16,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:49:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1028201207, now seen corresponding path program 1 times [2022-01-11 00:49:16,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:49:16,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129548116] [2022-01-11 00:49:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:49:16,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:49:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:49:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:49:16,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:49:16,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129548116] [2022-01-11 00:49:16,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129548116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:49:16,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:49:16,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 00:49:16,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308302257] [2022-01-11 00:49:16,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:49:16,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 00:49:16,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:49:16,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 00:49:16,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:49:16,443 INFO L87 Difference]: Start difference. First operand 609 states and 893 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:49:19,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:22,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:26,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:28,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:30,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:33,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:33,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:49:33,703 INFO L93 Difference]: Finished difference Result 3589 states and 5361 transitions. [2022-01-11 00:49:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 00:49:33,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-11 00:49:33,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:49:33,715 INFO L225 Difference]: With dead ends: 3589 [2022-01-11 00:49:33,716 INFO L226 Difference]: Without dead ends: 3084 [2022-01-11 00:49:33,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-01-11 00:49:33,718 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 863 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 17 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-01-11 00:49:33,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 882 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 502 Invalid, 6 Unknown, 0 Unchecked, 15.6s Time] [2022-01-11 00:49:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2022-01-11 00:49:34,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 1987. [2022-01-11 00:49:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1985 states have (on average 1.4770780856423174) internal successors, (2932), 1986 states have internal predecessors, (2932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:49:34,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2932 transitions. [2022-01-11 00:49:34,486 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2932 transitions. Word has length 51 [2022-01-11 00:49:34,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:49:34,487 INFO L470 AbstractCegarLoop]: Abstraction has 1987 states and 2932 transitions. [2022-01-11 00:49:34,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:49:34,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2932 transitions. [2022-01-11 00:49:34,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 00:49:34,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:49:34,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:49:34,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:49:34,488 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:49:34,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:49:34,489 INFO L85 PathProgramCache]: Analyzing trace with hash 852479048, now seen corresponding path program 1 times [2022-01-11 00:49:34,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:49:34,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327346635] [2022-01-11 00:49:34,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:49:34,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:49:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:49:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:49:34,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:49:34,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327346635] [2022-01-11 00:49:34,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327346635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:49:34,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:49:34,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 00:49:34,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253524573] [2022-01-11 00:49:34,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:49:34,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 00:49:34,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:49:34,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 00:49:34,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:49:34,959 INFO L87 Difference]: Start difference. First operand 1987 states and 2932 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:49:37,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:39,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:42,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:44,244 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:47,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:50,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:53,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:57,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 00:49:57,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:49:57,403 INFO L93 Difference]: Finished difference Result 7310 states and 10889 transitions. [2022-01-11 00:49:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 00:49:57,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-11 00:49:57,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:49:57,423 INFO L225 Difference]: With dead ends: 7310 [2022-01-11 00:49:57,424 INFO L226 Difference]: Without dead ends: 5523 [2022-01-11 00:49:57,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-11 00:49:57,427 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 869 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 19 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2022-01-11 00:49:57,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 807 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 386 Invalid, 8 Unknown, 0 Unchecked, 19.7s Time] [2022-01-11 00:49:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2022-01-11 00:49:58,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 3140. [2022-01-11 00:49:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3140 states, 3138 states have (on average 1.489802421924793) internal successors, (4675), 3139 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:49:58,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 4675 transitions. [2022-01-11 00:49:58,872 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 4675 transitions. Word has length 51 [2022-01-11 00:49:58,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:49:58,872 INFO L470 AbstractCegarLoop]: Abstraction has 3140 states and 4675 transitions. [2022-01-11 00:49:58,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:49:58,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 4675 transitions. [2022-01-11 00:49:58,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 00:49:58,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:49:58,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:49:58,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:49:58,874 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:49:58,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:49:58,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2068565096, now seen corresponding path program 1 times [2022-01-11 00:49:58,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:49:58,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96051452] [2022-01-11 00:49:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:49:58,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:49:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:49:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:49:59,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:49:59,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96051452] [2022-01-11 00:49:59,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96051452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:49:59,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:49:59,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:49:59,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662716482] [2022-01-11 00:49:59,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:49:59,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:49:59,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:49:59,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:49:59,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:49:59,227 INFO L87 Difference]: Start difference. First operand 3140 states and 4675 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:50:01,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:50:01,170 INFO L93 Difference]: Finished difference Result 6153 states and 9220 transitions. [2022-01-11 00:50:01,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:50:01,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-11 00:50:01,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:50:01,181 INFO L225 Difference]: With dead ends: 6153 [2022-01-11 00:50:01,181 INFO L226 Difference]: Without dead ends: 3217 [2022-01-11 00:50:01,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:50:01,184 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 496 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:50:01,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 142 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 00:50:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2022-01-11 00:50:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 1071. [2022-01-11 00:50:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1069 states have (on average 1.4621141253507952) internal successors, (1563), 1070 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:50:01,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1563 transitions. [2022-01-11 00:50:01,658 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1563 transitions. Word has length 52 [2022-01-11 00:50:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:50:01,658 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 1563 transitions. [2022-01-11 00:50:01,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:50:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1563 transitions. [2022-01-11 00:50:01,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 00:50:01,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:50:01,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:50:01,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:50:01,660 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:50:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:50:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash 273394873, now seen corresponding path program 1 times [2022-01-11 00:50:01,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:50:01,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486427183] [2022-01-11 00:50:01,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:50:01,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:50:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:50:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:50:01,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:50:01,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486427183] [2022-01-11 00:50:01,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486427183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:50:01,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:50:01,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:50:01,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93912147] [2022-01-11 00:50:01,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:50:01,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:50:01,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:50:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:50:01,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:50:01,962 INFO L87 Difference]: Start difference. First operand 1071 states and 1563 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:50:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:50:02,872 INFO L93 Difference]: Finished difference Result 2166 states and 3208 transitions. [2022-01-11 00:50:02,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:50:02,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-01-11 00:50:02,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:50:02,876 INFO L225 Difference]: With dead ends: 2166 [2022-01-11 00:50:02,877 INFO L226 Difference]: Without dead ends: 1215 [2022-01-11 00:50:02,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:50:02,879 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 521 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:50:02,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 138 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:50:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-01-11 00:50:03,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 569. [2022-01-11 00:50:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 567 states have (on average 1.4620811287477955) internal successors, (829), 568 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:50:03,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 829 transitions. [2022-01-11 00:50:03,161 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 829 transitions. Word has length 52 [2022-01-11 00:50:03,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:50:03,162 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 829 transitions. [2022-01-11 00:50:03,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:50:03,162 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 829 transitions. [2022-01-11 00:50:03,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 00:50:03,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:50:03,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:50:03,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:50:03,163 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:50:03,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:50:03,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1555059366, now seen corresponding path program 1 times [2022-01-11 00:50:03,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:50:03,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234335476] [2022-01-11 00:50:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:50:03,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:50:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:50:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:50:03,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:50:03,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234335476] [2022-01-11 00:50:03,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234335476] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:50:03,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:50:03,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:50:03,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758828015] [2022-01-11 00:50:03,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:50:03,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:50:03,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:50:03,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:50:03,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:50:03,440 INFO L87 Difference]: Start difference. First operand 569 states and 829 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:50:05,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []