/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_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:40:23,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:40:23,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:40:23,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:40:23,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:40:23,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:40:23,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:40:23,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:40:23,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:40:23,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:40:23,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:40:23,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:40:23,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:40:23,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:40:23,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:40:23,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:40:23,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:40:23,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:40:23,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:40:23,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:40:23,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:40:23,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:40:23,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:40:23,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:40:23,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:40:23,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:40:23,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:40:23,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:40:23,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:40:23,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:40:23,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:40:23,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:40:23,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:40:23,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:40:23,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:40:23,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:40:23,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:40:23,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:40:23,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:40:23,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:40:23,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:40:23,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:40:23,436 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:40:23,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:40:23,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:40:23,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:40:23,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:40:23,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:40:23,437 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:40:23,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:40:23,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:40:23,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:40:23,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:40:23,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:40:23,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:40:23,439 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:40:23,439 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:40:23,439 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:40:23,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:40:23,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:40:23,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:40:23,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:40:23,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:40:23,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:40:23,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:40:23,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:40:23,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:40:23,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:40:23,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:40:23,440 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:40:23,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:40:23,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:40:23,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:40:23,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:40:23,441 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:40:23,442 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:40:23,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:40:23,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:40:23,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:40:23,641 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:40:23,641 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:40:23,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-11 06:40:23,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ddd5956/45d252f57af1464e9034ad7640a6bc83/FLAGaf154d5b1 [2022-01-11 06:40:24,058 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:40:24,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-11 06:40:24,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ddd5956/45d252f57af1464e9034ad7640a6bc83/FLAGaf154d5b1 [2022-01-11 06:40:24,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ddd5956/45d252f57af1464e9034ad7640a6bc83 [2022-01-11 06:40:24,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:40:24,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:40:24,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:40:24,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:40:24,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:40:24,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:40:24" (1/1) ... [2022-01-11 06:40:24,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@420010d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:24, skipping insertion in model container [2022-01-11 06:40:24,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:40:24" (1/1) ... [2022-01-11 06:40:24,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:40:24,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:40:24,301 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.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[7979,7992] [2022-01-11 06:40:24,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:40:24,355 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:40:24,399 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.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[7979,7992] [2022-01-11 06:40:24,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:40:24,449 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:40:24,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:24 WrapperNode [2022-01-11 06:40:24,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:40:24,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:40:24,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:40:24,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:40:24,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:24" (1/1) ... [2022-01-11 06:40:24,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:24" (1/1) ... [2022-01-11 06:40:24,485 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 613 [2022-01-11 06:40:24,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:40:24,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:40:24,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:40:24,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:40:24,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:24" (1/1) ... [2022-01-11 06:40:24,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:24" (1/1) ... [2022-01-11 06:40:24,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:24" (1/1) ... [2022-01-11 06:40:24,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:24" (1/1) ... [2022-01-11 06:40:24,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:24" (1/1) ... [2022-01-11 06:40:24,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:24" (1/1) ... [2022-01-11 06:40:24,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:24" (1/1) ... [2022-01-11 06:40:24,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:40:24,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:40:24,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:40:24,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:40:24,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:24" (1/1) ... [2022-01-11 06:40:24,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:40:24,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:40:24,547 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 06:40:24,554 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 06:40:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:40:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:40:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:40:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:40:24,708 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:40:24,709 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:40:25,258 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:40:25,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:40:25,266 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:40:25,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:40:25 BoogieIcfgContainer [2022-01-11 06:40:25,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:40:25,270 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:40:25,270 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:40:25,276 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:40:25,278 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:40:25" (1/1) ... [2022-01-11 06:40:25,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:40:25 BasicIcfg [2022-01-11 06:40:25,666 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:40:25,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:40:25,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:40:25,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:40:25,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:40:24" (1/4) ... [2022-01-11 06:40:25,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b7d0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:40:25, skipping insertion in model container [2022-01-11 06:40:25,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:40:24" (2/4) ... [2022-01-11 06:40:25,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b7d0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:40:25, skipping insertion in model container [2022-01-11 06:40:25,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:40:25" (3/4) ... [2022-01-11 06:40:25,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b7d0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:40:25, skipping insertion in model container [2022-01-11 06:40:25,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:40:25" (4/4) ... [2022-01-11 06:40:25,674 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 06:40:25,677 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:40:25,677 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:40:25,720 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:40:25,727 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 06:40:25,727 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:40:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7567567567567568) internal successors, (260), 149 states have internal predecessors, (260), 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 06:40:25,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 06:40:25,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:25,748 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] [2022-01-11 06:40:25,748 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:25,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash -490617956, now seen corresponding path program 1 times [2022-01-11 06:40:25,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:25,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786431436] [2022-01-11 06:40:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:25,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:26,283 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 06:40:26,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:26,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786431436] [2022-01-11 06:40:26,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786431436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:26,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:26,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:40:26,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771033069] [2022-01-11 06:40:26,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:26,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:40:26,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:26,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:40:26,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:40:26,306 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7567567567567568) internal successors, (260), 149 states have internal predecessors, (260), 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 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 06:40:27,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:27,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:40:27,754 INFO L93 Difference]: Finished difference Result 295 states and 489 transitions. [2022-01-11 06:40:27,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:40:27,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-01-11 06:40:27,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:40:27,765 INFO L225 Difference]: With dead ends: 295 [2022-01-11 06:40:27,765 INFO L226 Difference]: Without dead ends: 225 [2022-01-11 06:40:27,766 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 06:40:27,770 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 122 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-11 06:40:27,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 548 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-11 06:40:27,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-11 06:40:27,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2022-01-11 06:40:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.445945945945946) internal successors, (321), 222 states have internal predecessors, (321), 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 06:40:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 321 transitions. [2022-01-11 06:40:27,844 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 321 transitions. Word has length 76 [2022-01-11 06:40:27,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:40:27,845 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 321 transitions. [2022-01-11 06:40:27,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 06:40:27,845 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 321 transitions. [2022-01-11 06:40:27,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 06:40:27,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:27,849 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] [2022-01-11 06:40:27,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:40:27,849 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:27,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:27,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1329387357, now seen corresponding path program 1 times [2022-01-11 06:40:27,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:27,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628449878] [2022-01-11 06:40:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:27,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:28,340 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 06:40:28,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:28,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628449878] [2022-01-11 06:40:28,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628449878] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:28,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:28,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 06:40:28,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327068189] [2022-01-11 06:40:28,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:28,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 06:40:28,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:28,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 06:40:28,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:40:28,342 INFO L87 Difference]: Start difference. First operand 223 states and 321 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 06:40:30,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:33,456 WARN L534 Checker$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 06:40:37,037 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:39,110 WARN L534 Checker$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 06:40:41,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:43,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:43,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:40:43,716 INFO L93 Difference]: Finished difference Result 1384 states and 2125 transitions. [2022-01-11 06:40:43,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 06:40:43,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 78 [2022-01-11 06:40:43,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:40:43,723 INFO L225 Difference]: With dead ends: 1384 [2022-01-11 06:40:43,723 INFO L226 Difference]: Without dead ends: 1203 [2022-01-11 06:40:43,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-11 06:40:43,728 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1528 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 19 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-01-11 06:40:43,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 1326 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 726 Invalid, 6 Unknown, 0 Unchecked, 14.8s Time] [2022-01-11 06:40:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-01-11 06:40:43,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 552. [2022-01-11 06:40:43,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 1.5045372050816697) internal successors, (829), 551 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 06:40:43,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 829 transitions. [2022-01-11 06:40:43,876 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 829 transitions. Word has length 78 [2022-01-11 06:40:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:40:43,877 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 829 transitions. [2022-01-11 06:40:43,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 06:40:43,877 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 829 transitions. [2022-01-11 06:40:43,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 06:40:43,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:43,879 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] [2022-01-11 06:40:43,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:40:43,879 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:43,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:43,879 INFO L85 PathProgramCache]: Analyzing trace with hash 86489708, now seen corresponding path program 1 times [2022-01-11 06:40:43,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:43,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715275672] [2022-01-11 06:40:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:43,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:44,288 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 06:40:44,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:44,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715275672] [2022-01-11 06:40:44,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715275672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:44,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:44,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 06:40:44,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167498187] [2022-01-11 06:40:44,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:44,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 06:40:44,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:44,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 06:40:44,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:40:44,290 INFO L87 Difference]: Start difference. First operand 552 states and 829 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2022-01-11 06:40:46,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:48,918 WARN L534 Checker$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 06:40:53,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:56,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:40:58,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:40:58,002 INFO L93 Difference]: Finished difference Result 3032 states and 4696 transitions. [2022-01-11 06:40:58,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 06:40:58,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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 [2022-01-11 06:40:58,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:40:58,013 INFO L225 Difference]: With dead ends: 3032 [2022-01-11 06:40:58,014 INFO L226 Difference]: Without dead ends: 2594 [2022-01-11 06:40:58,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-11 06:40:58,017 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1403 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 18 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-01-11 06:40:58,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1403 Valid, 1199 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 609 Invalid, 4 Unknown, 0 Unchecked, 12.5s Time] [2022-01-11 06:40:58,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2594 states. [2022-01-11 06:40:58,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2594 to 1598. [2022-01-11 06:40:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1597 states have (on average 1.5397620538509706) internal successors, (2459), 1597 states have internal predecessors, (2459), 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 06:40:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2459 transitions. [2022-01-11 06:40:58,597 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2459 transitions. Word has length 79 [2022-01-11 06:40:58,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:40:58,598 INFO L470 AbstractCegarLoop]: Abstraction has 1598 states and 2459 transitions. [2022-01-11 06:40:58,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2022-01-11 06:40:58,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2459 transitions. [2022-01-11 06:40:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 06:40:58,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:40:58,600 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] [2022-01-11 06:40:58,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:40:58,600 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:40:58,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:40:58,600 INFO L85 PathProgramCache]: Analyzing trace with hash 848482701, now seen corresponding path program 1 times [2022-01-11 06:40:58,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:40:58,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947232115] [2022-01-11 06:40:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:40:58,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:40:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:40:58,971 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 06:40:58,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:40:58,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947232115] [2022-01-11 06:40:58,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947232115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:40:58,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:40:58,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 06:40:58,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254301404] [2022-01-11 06:40:58,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:40:58,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 06:40:58,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:40:58,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 06:40:58,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:40:58,973 INFO L87 Difference]: Start difference. First operand 1598 states and 2459 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2022-01-11 06:41:02,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:04,561 WARN L534 Checker$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 06:41:09,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:12,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:14,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:16,364 WARN L534 Checker$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 06:41:19,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:22,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:24,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:24,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:41:24,741 INFO L93 Difference]: Finished difference Result 7624 states and 11877 transitions. [2022-01-11 06:41:24,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 06:41:24,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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 [2022-01-11 06:41:24,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:41:24,767 INFO L225 Difference]: With dead ends: 7624 [2022-01-11 06:41:24,767 INFO L226 Difference]: Without dead ends: 6199 [2022-01-11 06:41:24,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-11 06:41:24,770 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 852 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 15 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2022-01-11 06:41:24,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 1975 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1104 Invalid, 9 Unknown, 0 Unchecked, 22.8s Time] [2022-01-11 06:41:24,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6199 states. [2022-01-11 06:41:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6199 to 2712. [2022-01-11 06:41:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 2711 states have (on average 1.549981556621173) internal successors, (4202), 2711 states have internal predecessors, (4202), 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 06:41:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 4202 transitions. [2022-01-11 06:41:26,005 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 4202 transitions. Word has length 79 [2022-01-11 06:41:26,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:41:26,005 INFO L470 AbstractCegarLoop]: Abstraction has 2712 states and 4202 transitions. [2022-01-11 06:41:26,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2022-01-11 06:41:26,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 4202 transitions. [2022-01-11 06:41:26,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 06:41:26,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:41:26,007 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] [2022-01-11 06:41:26,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:41:26,007 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:41:26,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:41:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash 973361246, now seen corresponding path program 1 times [2022-01-11 06:41:26,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:41:26,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917385804] [2022-01-11 06:41:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:41:26,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:41:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:41:26,407 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 06:41:26,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:41:26,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917385804] [2022-01-11 06:41:26,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917385804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:41:26,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:41:26,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 06:41:26,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603365337] [2022-01-11 06:41:26,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:41:26,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 06:41:26,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:41:26,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 06:41:26,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:41:26,409 INFO L87 Difference]: Start difference. First operand 2712 states and 4202 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 06:41:28,907 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 06:41:31,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:41:34,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []