/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 19:43:14,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 19:43:14,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 19:43:14,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 19:43:14,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 19:43:14,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 19:43:14,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 19:43:14,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 19:43:14,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 19:43:14,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 19:43:14,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 19:43:14,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 19:43:14,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 19:43:14,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 19:43:14,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 19:43:14,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 19:43:14,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 19:43:14,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 19:43:14,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 19:43:14,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 19:43:14,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 19:43:14,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 19:43:14,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 19:43:14,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 19:43:14,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 19:43:14,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 19:43:14,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 19:43:14,270 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 19:43:14,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 19:43:14,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 19:43:14,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 19:43:14,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 19:43:14,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 19:43:14,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 19:43:14,271 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 19:43:14,271 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 19:43:14,271 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 19:43:14,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 19:43:14,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 19:43:14,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 19:43:14,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 19:43:14,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 19:43:14,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:43:14,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 19:43:14,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 19:43:14,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 19:43:14,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 19:43:14,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 19:43:14,273 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 19:43:14,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 19:43:14,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 19:43:14,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 19:43:14,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 19:43:14,275 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 19:43:14,275 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 19:43:14,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 19:43:14,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 19:43:14,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 19:43:14,471 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 19:43:14,472 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 19:43:14,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-01-10 19:43:14,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/001bd580e/0ff1b268961d4d1783a4c841e095b1d1/FLAG09c8a6c2d [2022-01-10 19:43:15,139 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 19:43:15,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-01-10 19:43:15,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/001bd580e/0ff1b268961d4d1783a4c841e095b1d1/FLAG09c8a6c2d [2022-01-10 19:43:15,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/001bd580e/0ff1b268961d4d1783a4c841e095b1d1 [2022-01-10 19:43:15,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 19:43:15,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 19:43:15,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 19:43:15,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 19:43:15,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 19:43:15,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:43:15" (1/1) ... [2022-01-10 19:43:15,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c5fbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:15, skipping insertion in model container [2022-01-10 19:43:15,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:43:15" (1/1) ... [2022-01-10 19:43:15,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 19:43:15,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 19:43:15,859 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[6524,6537] [2022-01-10 19:43:15,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[13814,13827] [2022-01-10 19:43:16,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:43:16,479 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 19:43:16,500 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[6524,6537] [2022-01-10 19:43:16,511 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[13814,13827] [2022-01-10 19:43:16,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 19:43:16,902 INFO L208 MainTranslator]: Completed translation [2022-01-10 19:43:16,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:16 WrapperNode [2022-01-10 19:43:16,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 19:43:16,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 19:43:16,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 19:43:16,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 19:43:16,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:16" (1/1) ... [2022-01-10 19:43:16,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:16" (1/1) ... [2022-01-10 19:43:17,086 INFO L137 Inliner]: procedures = 36, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4956 [2022-01-10 19:43:17,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 19:43:17,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 19:43:17,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 19:43:17,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 19:43:17,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:16" (1/1) ... [2022-01-10 19:43:17,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:16" (1/1) ... [2022-01-10 19:43:17,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:16" (1/1) ... [2022-01-10 19:43:17,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:16" (1/1) ... [2022-01-10 19:43:17,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:16" (1/1) ... [2022-01-10 19:43:17,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:16" (1/1) ... [2022-01-10 19:43:17,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:16" (1/1) ... [2022-01-10 19:43:17,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 19:43:17,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 19:43:17,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 19:43:17,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 19:43:17,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:16" (1/1) ... [2022-01-10 19:43:17,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 19:43:17,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 19:43:17,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 19:43:17,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 19:43:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 19:43:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 19:43:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 19:43:17,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 19:43:17,437 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 19:43:17,438 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 19:43:40,018 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 19:43:40,039 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 19:43:40,039 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 19:43:40,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:43:40 BoogieIcfgContainer [2022-01-10 19:43:40,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 19:43:40,042 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 19:43:40,043 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 19:43:40,043 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 19:43:40,045 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:43:40" (1/1) ... [2022-01-10 19:43:41,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:43:41 BasicIcfg [2022-01-10 19:43:41,022 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 19:43:41,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 19:43:41,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 19:43:41,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 19:43:41,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:43:15" (1/4) ... [2022-01-10 19:43:41,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380d284f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:43:41, skipping insertion in model container [2022-01-10 19:43:41,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:43:16" (2/4) ... [2022-01-10 19:43:41,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380d284f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:43:41, skipping insertion in model container [2022-01-10 19:43:41,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:43:40" (3/4) ... [2022-01-10 19:43:41,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380d284f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:43:41, skipping insertion in model container [2022-01-10 19:43:41,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:43:41" (4/4) ... [2022-01-10 19:43:41,027 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label02.cTransformedIcfg [2022-01-10 19:43:41,031 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 19:43:41,031 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 19:43:41,079 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 19:43:41,085 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 19:43:41,085 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 19:43:41,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:41,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 19:43:41,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:43:41,117 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] [2022-01-10 19:43:41,118 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:43:41,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:43:41,121 INFO L85 PathProgramCache]: Analyzing trace with hash 248887764, now seen corresponding path program 1 times [2022-01-10 19:43:41,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:43:41,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439449631] [2022-01-10 19:43:41,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:43:41,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:43:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:43:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:43:41,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:43:41,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439449631] [2022-01-10 19:43:41,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439449631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:43:41,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:43:41,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:43:41,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031781336] [2022-01-10 19:43:41,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:43:41,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 19:43:41,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:43:41,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 19:43:41,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 19:43:41,344 INFO L87 Difference]: Start difference. First operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 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 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:43:41,407 INFO L93 Difference]: Finished difference Result 1732 states and 3290 transitions. [2022-01-10 19:43:41,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 19:43:41,409 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2022-01-10 19:43:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:43:41,428 INFO L225 Difference]: With dead ends: 1732 [2022-01-10 19:43:41,429 INFO L226 Difference]: Without dead ends: 812 [2022-01-10 19:43:41,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 19:43:41,438 INFO L933 BasicCegarLoop]: 1597 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:43:41,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:43:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-01-10 19:43:41,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-01-10 19:43:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8925925925925926) internal successors, (1533), 811 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1533 transitions. [2022-01-10 19:43:41,504 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1533 transitions. Word has length 26 [2022-01-10 19:43:41,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:43:41,504 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1533 transitions. [2022-01-10 19:43:41,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:41,505 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1533 transitions. [2022-01-10 19:43:41,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 19:43:41,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:43:41,506 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] [2022-01-10 19:43:41,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 19:43:41,507 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:43:41,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:43:41,508 INFO L85 PathProgramCache]: Analyzing trace with hash -159936461, now seen corresponding path program 1 times [2022-01-10 19:43:41,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:43:41,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176101734] [2022-01-10 19:43:41,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:43:41,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:43:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:43:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:43:41,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:43:41,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176101734] [2022-01-10 19:43:41,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176101734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:43:41,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:43:41,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:43:41,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377405745] [2022-01-10 19:43:41,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:43:41,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:43:41,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:43:41,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:43:41,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:43:41,795 INFO L87 Difference]: Start difference. First operand 812 states and 1533 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:41,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:43:41,879 INFO L93 Difference]: Finished difference Result 852 states and 1593 transitions. [2022-01-10 19:43:41,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 19:43:41,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2022-01-10 19:43:41,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:43:41,882 INFO L225 Difference]: With dead ends: 852 [2022-01-10 19:43:41,882 INFO L226 Difference]: Without dead ends: 812 [2022-01-10 19:43:41,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 19:43:41,884 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 3 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6105 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:43:41,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6105 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:43:41,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-01-10 19:43:41,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-01-10 19:43:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8728395061728396) internal successors, (1517), 811 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:41,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1517 transitions. [2022-01-10 19:43:41,897 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1517 transitions. Word has length 26 [2022-01-10 19:43:41,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:43:41,898 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1517 transitions. [2022-01-10 19:43:41,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:41,899 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1517 transitions. [2022-01-10 19:43:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 19:43:41,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:43:41,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:43:41,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 19:43:41,909 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:43:41,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:43:41,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1943656073, now seen corresponding path program 1 times [2022-01-10 19:43:41,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:43:41,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412981914] [2022-01-10 19:43:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:43:41,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:43:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:43:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:43:42,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:43:42,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412981914] [2022-01-10 19:43:42,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412981914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:43:42,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:43:42,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:43:42,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397150308] [2022-01-10 19:43:42,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:43:42,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:43:42,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:43:42,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:43:42,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:43:42,028 INFO L87 Difference]: Start difference. First operand 812 states and 1517 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:42,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:43:42,056 INFO L93 Difference]: Finished difference Result 878 states and 1619 transitions. [2022-01-10 19:43:42,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:43:42,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-10 19:43:42,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:43:42,062 INFO L225 Difference]: With dead ends: 878 [2022-01-10 19:43:42,062 INFO L226 Difference]: Without dead ends: 842 [2022-01-10 19:43:42,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:43:42,067 INFO L933 BasicCegarLoop]: 1559 mSDtfsCounter, 1485 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:43:42,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1613 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:43:42,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-01-10 19:43:42,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2022-01-10 19:43:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.8627684964200477) internal successors, (1561), 839 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:42,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1561 transitions. [2022-01-10 19:43:42,082 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1561 transitions. Word has length 41 [2022-01-10 19:43:42,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:43:42,082 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1561 transitions. [2022-01-10 19:43:42,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:42,083 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1561 transitions. [2022-01-10 19:43:42,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 19:43:42,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:43:42,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:43:42,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 19:43:42,085 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:43:42,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:43:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash 406671256, now seen corresponding path program 1 times [2022-01-10 19:43:42,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:43:42,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959004672] [2022-01-10 19:43:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:43:42,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:43:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:43:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:43:42,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:43:42,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959004672] [2022-01-10 19:43:42,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959004672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:43:42,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:43:42,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:43:42,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548771964] [2022-01-10 19:43:42,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:43:42,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:43:42,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:43:42,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:43:42,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:43:42,174 INFO L87 Difference]: Start difference. First operand 840 states and 1561 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:43:42,196 INFO L93 Difference]: Finished difference Result 956 states and 1741 transitions. [2022-01-10 19:43:42,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:43:42,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-10 19:43:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:43:42,199 INFO L225 Difference]: With dead ends: 956 [2022-01-10 19:43:42,199 INFO L226 Difference]: Without dead ends: 892 [2022-01-10 19:43:42,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:43:42,205 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 1481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:43:42,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 1612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:43:42,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-01-10 19:43:42,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 890. [2022-01-10 19:43:42,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 888 states have (on average 1.8445945945945945) internal successors, (1638), 889 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1638 transitions. [2022-01-10 19:43:42,219 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1638 transitions. Word has length 41 [2022-01-10 19:43:42,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:43:42,219 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 1638 transitions. [2022-01-10 19:43:42,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:42,220 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1638 transitions. [2022-01-10 19:43:42,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 19:43:42,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:43:42,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:43:42,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 19:43:42,221 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:43:42,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:43:42,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1554600391, now seen corresponding path program 1 times [2022-01-10 19:43:42,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:43:42,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947403348] [2022-01-10 19:43:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:43:42,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:43:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:43:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:43:42,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:43:42,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947403348] [2022-01-10 19:43:42,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947403348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:43:42,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:43:42,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:43:42,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893226662] [2022-01-10 19:43:42,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:43:42,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:43:42,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:43:42,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:43:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:43:42,284 INFO L87 Difference]: Start difference. First operand 890 states and 1638 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:42,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:43:42,306 INFO L93 Difference]: Finished difference Result 1094 states and 1952 transitions. [2022-01-10 19:43:42,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:43:42,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-10 19:43:42,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:43:42,310 INFO L225 Difference]: With dead ends: 1094 [2022-01-10 19:43:42,310 INFO L226 Difference]: Without dead ends: 980 [2022-01-10 19:43:42,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:43:42,311 INFO L933 BasicCegarLoop]: 1549 mSDtfsCounter, 1477 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:43:42,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1477 Valid, 1611 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:43:42,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-01-10 19:43:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 978. [2022-01-10 19:43:42,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 976 states have (on average 1.8135245901639345) internal successors, (1770), 977 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1770 transitions. [2022-01-10 19:43:42,325 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1770 transitions. Word has length 41 [2022-01-10 19:43:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:43:42,325 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 1770 transitions. [2022-01-10 19:43:42,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1770 transitions. [2022-01-10 19:43:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 19:43:42,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:43:42,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 19:43:42,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 19:43:42,326 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:43:42,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:43:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash -731740838, now seen corresponding path program 1 times [2022-01-10 19:43:42,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:43:42,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300042976] [2022-01-10 19:43:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:43:42,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:43:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:43:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:43:42,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:43:42,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300042976] [2022-01-10 19:43:42,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300042976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:43:42,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:43:42,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:43:42,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119257960] [2022-01-10 19:43:42,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:43:42,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:43:42,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:43:42,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:43:42,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:43:42,511 INFO L87 Difference]: Start difference. First operand 978 states and 1770 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:43:43,055 INFO L93 Difference]: Finished difference Result 2190 states and 3624 transitions. [2022-01-10 19:43:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 19:43:43,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-10 19:43:43,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:43:43,063 INFO L225 Difference]: With dead ends: 2190 [2022-01-10 19:43:43,063 INFO L226 Difference]: Without dead ends: 1988 [2022-01-10 19:43:43,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:43:43,065 INFO L933 BasicCegarLoop]: 1513 mSDtfsCounter, 4644 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 19:43:43,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4644 Valid, 1934 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 19:43:43,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2022-01-10 19:43:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1178. [2022-01-10 19:43:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 1176 states have (on average 1.7534013605442176) internal successors, (2062), 1177 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:43,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 2062 transitions. [2022-01-10 19:43:43,156 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 2062 transitions. Word has length 41 [2022-01-10 19:43:43,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:43:43,157 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 2062 transitions. [2022-01-10 19:43:43,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 2062 transitions. [2022-01-10 19:43:43,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 19:43:43,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:43:43,159 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] [2022-01-10 19:43:43,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 19:43:43,159 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:43:43,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:43:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash 222947327, now seen corresponding path program 1 times [2022-01-10 19:43:43,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:43:43,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607543464] [2022-01-10 19:43:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:43:43,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:43:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:43:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:43:43,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:43:43,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607543464] [2022-01-10 19:43:43,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607543464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:43:43,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:43:43,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:43:43,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060323319] [2022-01-10 19:43:43,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:43:43,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:43:43,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:43:43,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:43:43,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:43:43,247 INFO L87 Difference]: Start difference. First operand 1178 states and 2062 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:43,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:43:43,375 INFO L93 Difference]: Finished difference Result 1806 states and 2980 transitions. [2022-01-10 19:43:43,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:43:43,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2022-01-10 19:43:43,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:43:43,382 INFO L225 Difference]: With dead ends: 1806 [2022-01-10 19:43:43,382 INFO L226 Difference]: Without dead ends: 1404 [2022-01-10 19:43:43,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:43:43,384 INFO L933 BasicCegarLoop]: 1556 mSDtfsCounter, 43 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3063 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:43:43,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 3063 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:43:43,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2022-01-10 19:43:43,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1402. [2022-01-10 19:43:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1400 states have (on average 1.6814285714285715) internal successors, (2354), 1401 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 2354 transitions. [2022-01-10 19:43:43,531 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 2354 transitions. Word has length 43 [2022-01-10 19:43:43,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:43:43,531 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 2354 transitions. [2022-01-10 19:43:43,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:43,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 2354 transitions. [2022-01-10 19:43:43,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 19:43:43,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:43:43,532 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] [2022-01-10 19:43:43,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 19:43:43,532 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:43:43,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:43:43,532 INFO L85 PathProgramCache]: Analyzing trace with hash 254347041, now seen corresponding path program 1 times [2022-01-10 19:43:43,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:43:43,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115225438] [2022-01-10 19:43:43,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:43:43,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:43:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:43:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:43:43,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:43:43,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115225438] [2022-01-10 19:43:43,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115225438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:43:43,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:43:43,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:43:43,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350955909] [2022-01-10 19:43:43,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:43:43,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:43:43,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:43:43,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:43:43,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:43:43,734 INFO L87 Difference]: Start difference. First operand 1402 states and 2354 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:44,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:43:44,350 INFO L93 Difference]: Finished difference Result 3286 states and 5036 transitions. [2022-01-10 19:43:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 19:43:44,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 43 [2022-01-10 19:43:44,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:43:44,358 INFO L225 Difference]: With dead ends: 3286 [2022-01-10 19:43:44,358 INFO L226 Difference]: Without dead ends: 2660 [2022-01-10 19:43:44,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:43:44,360 INFO L933 BasicCegarLoop]: 1514 mSDtfsCounter, 4635 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4635 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 19:43:44,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4635 Valid, 1929 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 19:43:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-01-10 19:43:44,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 1402. [2022-01-10 19:43:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1400 states have (on average 1.6757142857142857) internal successors, (2346), 1401 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:44,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 2346 transitions. [2022-01-10 19:43:44,505 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 2346 transitions. Word has length 43 [2022-01-10 19:43:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:43:44,506 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 2346 transitions. [2022-01-10 19:43:44,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:44,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 2346 transitions. [2022-01-10 19:43:44,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 19:43:44,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:43:44,506 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] [2022-01-10 19:43:44,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 19:43:44,506 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:43:44,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:43:44,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1638172406, now seen corresponding path program 1 times [2022-01-10 19:43:44,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:43:44,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054577176] [2022-01-10 19:43:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:43:44,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:43:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:43:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:43:44,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:43:44,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054577176] [2022-01-10 19:43:44,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054577176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:43:44,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:43:44,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 19:43:44,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211389044] [2022-01-10 19:43:44,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:43:44,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:43:44,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:43:44,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:43:44,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:43:44,629 INFO L87 Difference]: Start difference. First operand 1402 states and 2346 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:46,650 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 [] [2022-01-10 19:43:46,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:43:46,968 INFO L93 Difference]: Finished difference Result 2212 states and 3498 transitions. [2022-01-10 19:43:46,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 19:43:46,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2022-01-10 19:43:46,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:43:46,973 INFO L225 Difference]: With dead ends: 2212 [2022-01-10 19:43:46,973 INFO L226 Difference]: Without dead ends: 1586 [2022-01-10 19:43:46,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:43:46,974 INFO L933 BasicCegarLoop]: 1532 mSDtfsCounter, 1469 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 19:43:46,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 1583 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 19:43:46,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2022-01-10 19:43:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1584. [2022-01-10 19:43:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1582 states have (on average 1.6434892541087232) internal successors, (2600), 1583 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2600 transitions. [2022-01-10 19:43:47,127 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2600 transitions. Word has length 44 [2022-01-10 19:43:47,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:43:47,127 INFO L470 AbstractCegarLoop]: Abstraction has 1584 states and 2600 transitions. [2022-01-10 19:43:47,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:47,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2600 transitions. [2022-01-10 19:43:47,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 19:43:47,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:43:47,128 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] [2022-01-10 19:43:47,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 19:43:47,128 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:43:47,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:43:47,128 INFO L85 PathProgramCache]: Analyzing trace with hash -730351263, now seen corresponding path program 1 times [2022-01-10 19:43:47,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:43:47,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254912552] [2022-01-10 19:43:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:43:47,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:43:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:43:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:43:47,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:43:47,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254912552] [2022-01-10 19:43:47,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254912552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:43:47,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:43:47,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 19:43:47,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985517468] [2022-01-10 19:43:47,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:43:47,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 19:43:47,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:43:47,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 19:43:47,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 19:43:47,233 INFO L87 Difference]: Start difference. First operand 1584 states and 2600 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:47,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 19:43:47,480 INFO L93 Difference]: Finished difference Result 1855 states and 2983 transitions. [2022-01-10 19:43:47,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 19:43:47,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 44 [2022-01-10 19:43:47,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 19:43:47,486 INFO L225 Difference]: With dead ends: 1855 [2022-01-10 19:43:47,486 INFO L226 Difference]: Without dead ends: 1853 [2022-01-10 19:43:47,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 19:43:47,487 INFO L933 BasicCegarLoop]: 1536 mSDtfsCounter, 179 mSDsluCounter, 4543 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 19:43:47,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 6079 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 19:43:47,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2022-01-10 19:43:47,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1608. [2022-01-10 19:43:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1606 states have (on average 1.62640099626401) internal successors, (2612), 1607 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:47,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2612 transitions. [2022-01-10 19:43:47,680 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2612 transitions. Word has length 44 [2022-01-10 19:43:47,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 19:43:47,681 INFO L470 AbstractCegarLoop]: Abstraction has 1608 states and 2612 transitions. [2022-01-10 19:43:47,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:47,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2612 transitions. [2022-01-10 19:43:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 19:43:47,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 19:43:47,681 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] [2022-01-10 19:43:47,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 19:43:47,682 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 19:43:47,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 19:43:47,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1408904162, now seen corresponding path program 1 times [2022-01-10 19:43:47,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 19:43:47,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282311076] [2022-01-10 19:43:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 19:43:47,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 19:43:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 19:43:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 19:43:47,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 19:43:47,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282311076] [2022-01-10 19:43:47,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282311076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 19:43:47,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 19:43:47,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 19:43:47,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565628332] [2022-01-10 19:43:47,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 19:43:47,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 19:43:47,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 19:43:47,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 19:43:47,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 19:43:47,754 INFO L87 Difference]: Start difference. First operand 1608 states and 2612 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 19:43:49,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:43:52,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:43:54,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:43:56,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:43:58,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:44:00,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:44:02,818 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:44:04,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:44:07,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:44:09,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:44:11,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:44:13,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:44:15,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:44:18,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:44:20,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:44:22,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:44:24,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 19:44:26,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []