/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/eca-rers2012/Problem10_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 04:12:11,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 04:12:11,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 04:12:11,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 04:12:11,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 04:12:11,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 04:12:11,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 04:12:11,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 04:12:11,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 04:12:11,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 04:12:11,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 04:12:11,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 04:12:11,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 04:12:11,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 04:12:11,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 04:12:11,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 04:12:11,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 04:12:11,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 04:12:11,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 04:12:11,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 04:12:11,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 04:12:11,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 04:12:11,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 04:12:11,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 04:12:11,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 04:12:11,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 04:12:11,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 04:12:11,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 04:12:11,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 04:12:11,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 04:12:11,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 04:12:11,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 04:12:11,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 04:12:11,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 04:12:11,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 04:12:11,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 04:12:11,595 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 04:12:11,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 04:12:11,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 04:12:11,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 04:12:11,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 04:12:11,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 04:12:11,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 04:12:11,619 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 04:12:11,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 04:12:11,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 04:12:11,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 04:12:11,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 04:12:11,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 04:12:11,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 04:12:11,620 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 04:12:11,620 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 04:12:11,620 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 04:12:11,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 04:12:11,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 04:12:11,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 04:12:11,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 04:12:11,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 04:12:11,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 04:12:11,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 04:12:11,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 04:12:11,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 04:12:11,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 04:12:11,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 04:12:11,621 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 04:12:11,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 04:12:11,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 04:12:11,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 04:12:11,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 04:12:11,622 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 04:12:11,622 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 04:12:11,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 04:12:11,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 04:12:11,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 04:12:11,801 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 04:12:11,801 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 04:12:11,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label48.c [2022-01-11 04:12:11,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b69ffa9d/79789ed8dd844f79991c2e2ccd537100/FLAGe5675a6fe [2022-01-11 04:12:12,245 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 04:12:12,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label48.c [2022-01-11 04:12:12,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b69ffa9d/79789ed8dd844f79991c2e2ccd537100/FLAGe5675a6fe [2022-01-11 04:12:12,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b69ffa9d/79789ed8dd844f79991c2e2ccd537100 [2022-01-11 04:12:12,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 04:12:12,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 04:12:12,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 04:12:12,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 04:12:12,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 04:12:12,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 04:12:12" (1/1) ... [2022-01-11 04:12:12,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4114528c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:12, skipping insertion in model container [2022-01-11 04:12:12,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 04:12:12" (1/1) ... [2022-01-11 04:12:12,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 04:12:12,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 04:12:12,846 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label48.c[1104,1117] [2022-01-11 04:12:12,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 04:12:12,975 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 04:12:12,987 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label48.c[1104,1117] [2022-01-11 04:12:13,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 04:12:13,070 INFO L208 MainTranslator]: Completed translation [2022-01-11 04:12:13,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13 WrapperNode [2022-01-11 04:12:13,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 04:12:13,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 04:12:13,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 04:12:13,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 04:12:13,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ... [2022-01-11 04:12:13,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ... [2022-01-11 04:12:13,144 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 595 [2022-01-11 04:12:13,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 04:12:13,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 04:12:13,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 04:12:13,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 04:12:13,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ... [2022-01-11 04:12:13,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ... [2022-01-11 04:12:13,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ... [2022-01-11 04:12:13,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ... [2022-01-11 04:12:13,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ... [2022-01-11 04:12:13,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ... [2022-01-11 04:12:13,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ... [2022-01-11 04:12:13,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 04:12:13,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 04:12:13,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 04:12:13,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 04:12:13,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ... [2022-01-11 04:12:13,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 04:12:13,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 04:12:13,249 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 04:12:13,256 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 04:12:13,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 04:12:13,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 04:12:13,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 04:12:13,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 04:12:13,312 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 04:12:13,313 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 04:12:14,918 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 04:12:14,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 04:12:14,924 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 04:12:14,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 04:12:14 BoogieIcfgContainer [2022-01-11 04:12:14,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 04:12:14,926 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 04:12:14,926 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 04:12:14,926 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 04:12:14,928 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 04:12:14" (1/1) ... [2022-01-11 04:12:15,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 04:12:15 BasicIcfg [2022-01-11 04:12:15,169 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 04:12:15,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 04:12:15,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 04:12:15,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 04:12:15,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 04:12:12" (1/4) ... [2022-01-11 04:12:15,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c3f8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 04:12:15, skipping insertion in model container [2022-01-11 04:12:15,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (2/4) ... [2022-01-11 04:12:15,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c3f8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 04:12:15, skipping insertion in model container [2022-01-11 04:12:15,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 04:12:14" (3/4) ... [2022-01-11 04:12:15,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c3f8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 04:12:15, skipping insertion in model container [2022-01-11 04:12:15,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 04:12:15" (4/4) ... [2022-01-11 04:12:15,177 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label48.cTransformedIcfg [2022-01-11 04:12:15,180 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 04:12:15,181 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 04:12:15,233 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 04:12:15,239 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 04:12:15,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 04:12:15,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 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 04:12:15,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-11 04:12:15,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 04:12:15,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-11 04:12:15,258 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 04:12:15,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 04:12:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash 104943519, now seen corresponding path program 1 times [2022-01-11 04:12:15,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 04:12:15,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052980511] [2022-01-11 04:12:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 04:12:15,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 04:12:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 04:12:15,426 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 04:12:15,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 04:12:15,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052980511] [2022-01-11 04:12:15,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052980511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 04:12:15,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 04:12:15,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 04:12:15,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968547414] [2022-01-11 04:12:15,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 04:12:15,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 04:12:15,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 04:12:15,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 04:12:15,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 04:12:15,461 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 04:12:17,686 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 04:12:19,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:12:22,022 WARN L534 Checker$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 04:12:24,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:12:26,268 WARN L534 Checker$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 04:12:28,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:12:30,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:12:32,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:12:34,912 WARN L534 Checker$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 04:12:37,083 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:12:39,227 WARN L534 Checker$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 04:12:41,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:12:43,512 WARN L534 Checker$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 04:12:45,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:12:47,831 WARN L534 Checker$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 04:12:49,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:12:52,188 WARN L534 Checker$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 04:12:54,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:12:56,466 WARN L534 Checker$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 04:12:58,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:13:00,833 WARN L534 Checker$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 04:13:02,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:13:05,182 WARN L534 Checker$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 04:13:07,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:13:09,486 WARN L534 Checker$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 04:13:11,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:13:13,806 WARN L534 Checker$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 04:13:15,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:13:18,109 WARN L534 Checker$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 04:13:20,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:13:22,458 WARN L534 Checker$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 04:13:24,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:13:26,823 WARN L534 Checker$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 04:13:29,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 04:13:31,195 WARN L534 Checker$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 04:13:31,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 04:13:31,563 INFO L93 Difference]: Finished difference Result 552 states and 966 transitions. [2022-01-11 04:13:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 04:13:31,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-01-11 04:13:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 04:13:31,576 INFO L225 Difference]: With dead ends: 552 [2022-01-11 04:13:31,576 INFO L226 Difference]: Without dead ends: 282 [2022-01-11 04:13:31,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 04:13:31,580 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 165 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 105 mSolverCounterUnsat, 35 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 35 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.0s IncrementalHoareTripleChecker+Time [2022-01-11 04:13:31,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 76 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 378 Invalid, 35 Unknown, 0 Unchecked, 76.0s Time] [2022-01-11 04:13:31,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-11 04:13:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-01-11 04:13:31,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.5373665480427046) internal successors, (432), 281 states have internal predecessors, (432), 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 04:13:31,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 432 transitions. [2022-01-11 04:13:31,656 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 432 transitions. Word has length 7 [2022-01-11 04:13:31,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 04:13:31,657 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 432 transitions. [2022-01-11 04:13:31,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 04:13:31,657 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 432 transitions. [2022-01-11 04:13:31,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 04:13:31,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 04:13:31,658 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:31,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 04:13:31,659 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 04:13:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 04:13:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash 165742560, now seen corresponding path program 1 times [2022-01-11 04:13:31,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 04:13:31,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327183256] [2022-01-11 04:13:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 04:13:31,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 04:13:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 04:13:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 04:13:31,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 04:13:31,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327183256] [2022-01-11 04:13:31,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327183256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 04:13:31,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 04:13:31,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 04:13:31,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869669570] [2022-01-11 04:13:31,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 04:13:31,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 04:13:31,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 04:13:31,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 04:13:31,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 04:13:31,895 INFO L87 Difference]: Start difference. First operand 282 states and 432 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 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 04:13:34,006 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 []