/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:10:38,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:10:38,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:10:38,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:10:38,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:10:38,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:10:38,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:10:38,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:10:38,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:10:38,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:10:38,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:10:38,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:10:38,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:10:38,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:10:38,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:10:38,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:10:38,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:10:38,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:10:38,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:10:38,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:10:38,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:10:38,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:10:38,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:10:38,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:10:38,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 13:10:38,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:10:38,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:10:38,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:10:38,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:10:38,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:10:38,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:10:38,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:10:38,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:10:38,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:10:38,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:10:38,106 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:10:38,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:10:38,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:10:38,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:10:38,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:10:38,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:10:38,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:10:38,107 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:10:38,107 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:10:38,107 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:10:38,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:10:38,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:10:38,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:10:38,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:10:38,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:10:38,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:10:38,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:10:38,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:10:38,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:10:38,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:10:38,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:10:38,108 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:10:38,108 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:10:38,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:10:38,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:10:38,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:10:38,109 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:10:38,109 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:10:38,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:10:38,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:10:38,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:10:38,265 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:10:38,265 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:10:38,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-10 13:10:38,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c779259/a4f11897f1e04a62999158dabe3ad3a1/FLAG1470b1197 [2022-01-10 13:10:38,649 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:10:38,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-01-10 13:10:38,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c779259/a4f11897f1e04a62999158dabe3ad3a1/FLAG1470b1197 [2022-01-10 13:10:39,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c779259/a4f11897f1e04a62999158dabe3ad3a1 [2022-01-10 13:10:39,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:10:39,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:10:39,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:10:39,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:10:39,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:10:39,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:10:39" (1/1) ... [2022-01-10 13:10:39,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4141eab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:39, skipping insertion in model container [2022-01-10 13:10:39,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:10:39" (1/1) ... [2022-01-10 13:10:39,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:10:39,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:10:39,364 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[6778,6791] [2022-01-10 13:10:39,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:10:39,417 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:10:39,460 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[6778,6791] [2022-01-10 13:10:39,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:10:39,502 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:10:39,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:39 WrapperNode [2022-01-10 13:10:39,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:10:39,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:10:39,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:10:39,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:10:39,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:39" (1/1) ... [2022-01-10 13:10:39,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:39" (1/1) ... [2022-01-10 13:10:39,554 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 514 [2022-01-10 13:10:39,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:10:39,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:10:39,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:10:39,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:10:39,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:39" (1/1) ... [2022-01-10 13:10:39,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:39" (1/1) ... [2022-01-10 13:10:39,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:39" (1/1) ... [2022-01-10 13:10:39,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:39" (1/1) ... [2022-01-10 13:10:39,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:39" (1/1) ... [2022-01-10 13:10:39,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:39" (1/1) ... [2022-01-10 13:10:39,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:39" (1/1) ... [2022-01-10 13:10:39,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:10:39,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:10:39,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:10:39,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:10:39,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:39" (1/1) ... [2022-01-10 13:10:39,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:10:39,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:10:39,614 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 13:10:39,616 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 13:10:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:10:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:10:39,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:10:39,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:10:39,729 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:10:39,730 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:10:40,072 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:10:40,078 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:10:40,078 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:10:40,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:10:40 BoogieIcfgContainer [2022-01-10 13:10:40,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:10:40,080 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:10:40,080 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:10:40,081 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:10:40,083 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:10:40" (1/1) ... [2022-01-10 13:10:40,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:10:40 BasicIcfg [2022-01-10 13:10:40,336 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:10:40,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:10:40,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:10:40,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:10:40,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:10:39" (1/4) ... [2022-01-10 13:10:40,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3732b7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:10:40, skipping insertion in model container [2022-01-10 13:10:40,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:10:39" (2/4) ... [2022-01-10 13:10:40,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3732b7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:10:40, skipping insertion in model container [2022-01-10 13:10:40,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:10:40" (3/4) ... [2022-01-10 13:10:40,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3732b7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:10:40, skipping insertion in model container [2022-01-10 13:10:40,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:10:40" (4/4) ... [2022-01-10 13:10:40,344 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 13:10:40,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:10:40,350 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:10:40,393 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:10:40,397 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 13:10:40,397 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:10:40,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 121 states have (on average 1.7520661157024793) internal successors, (212), 122 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:10:40,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 13:10:40,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:10:40,418 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] [2022-01-10 13:10:40,418 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:10:40,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:10:40,423 INFO L85 PathProgramCache]: Analyzing trace with hash -641070806, now seen corresponding path program 1 times [2022-01-10 13:10:40,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:10:40,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146890476] [2022-01-10 13:10:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:10:40,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:10:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:10:40,944 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 13:10:40,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:10:40,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146890476] [2022-01-10 13:10:40,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146890476] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:10:40,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:10:40,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:10:40,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073639029] [2022-01-10 13:10:40,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:10:40,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:10:40,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:10:40,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:10:40,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:10:40,980 INFO L87 Difference]: Start difference. First operand has 123 states, 121 states have (on average 1.7520661157024793) internal successors, (212), 122 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 13:10:41,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:10:41,394 INFO L93 Difference]: Finished difference Result 243 states and 400 transitions. [2022-01-10 13:10:41,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:10:41,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2022-01-10 13:10:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:10:41,405 INFO L225 Difference]: With dead ends: 243 [2022-01-10 13:10:41,405 INFO L226 Difference]: Without dead ends: 183 [2022-01-10 13:10:41,407 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 13:10:41,410 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 102 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 13:10:41,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 440 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 13:10:41,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-01-10 13:10:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2022-01-10 13:10:41,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4444444444444444) internal successors, (260), 180 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:10:41,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 260 transitions. [2022-01-10 13:10:41,481 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 260 transitions. Word has length 62 [2022-01-10 13:10:41,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:10:41,482 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 260 transitions. [2022-01-10 13:10:41,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 13:10:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 260 transitions. [2022-01-10 13:10:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 13:10:41,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:10:41,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:10:41,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:10:41,486 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:10:41,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:10:41,488 INFO L85 PathProgramCache]: Analyzing trace with hash -497729653, now seen corresponding path program 1 times [2022-01-10 13:10:41,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:10:41,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014433305] [2022-01-10 13:10:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:10:41,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:10:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:10:41,932 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 13:10:41,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:10:41,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014433305] [2022-01-10 13:10:41,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014433305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:10:41,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:10:41,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:10:41,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923300418] [2022-01-10 13:10:41,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:10:41,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:10:41,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:10:41,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:10:41,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:10:41,935 INFO L87 Difference]: Start difference. First operand 181 states and 260 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 13:10:44,317 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 13:10:46,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:10:48,819 WARN L534 Checker$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 13:10:52,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:10:55,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:10:57,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:10:59,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:01,393 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 13:11:01,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:01,698 INFO L93 Difference]: Finished difference Result 1126 states and 1712 transitions. [2022-01-10 13:11:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 13:11:01,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 64 [2022-01-10 13:11:01,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:01,703 INFO L225 Difference]: With dead ends: 1126 [2022-01-10 13:11:01,703 INFO L226 Difference]: Without dead ends: 979 [2022-01-10 13:11:01,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-01-10 13:11:01,705 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 1000 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 18 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:01,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 958 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 518 Invalid, 8 Unknown, 0 Unchecked, 19.1s Time] [2022-01-10 13:11:01,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2022-01-10 13:11:01,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 769. [2022-01-10 13:11:01,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 1.52734375) internal successors, (1173), 768 states have internal predecessors, (1173), 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 13:11:01,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1173 transitions. [2022-01-10 13:11:01,881 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1173 transitions. Word has length 64 [2022-01-10 13:11:01,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:01,886 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 1173 transitions. [2022-01-10 13:11:01,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 13:11:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1173 transitions. [2022-01-10 13:11:01,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 13:11:01,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:01,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:11:01,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:11:01,892 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:01,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:01,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1718243941, now seen corresponding path program 1 times [2022-01-10 13:11:01,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:01,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777334981] [2022-01-10 13:11:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:01,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:02,312 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 13:11:02,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:02,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777334981] [2022-01-10 13:11:02,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777334981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:02,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:02,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:11:02,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72637807] [2022-01-10 13:11:02,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:02,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:11:02,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:02,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:11:02,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:11:02,314 INFO L87 Difference]: Start difference. First operand 769 states and 1173 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 13:11:04,781 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 13:11:06,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:09,740 WARN L534 Checker$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 13:11:11,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:14,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:16,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:20,090 WARN L534 Checker$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 13:11:22,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:25,178 WARN L534 Checker$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 13:11:27,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:29,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:29,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:29,992 INFO L93 Difference]: Finished difference Result 5126 states and 7941 transitions. [2022-01-10 13:11:29,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 13:11:29,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 65 [2022-01-10 13:11:29,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:30,006 INFO L225 Difference]: With dead ends: 5126 [2022-01-10 13:11:30,007 INFO L226 Difference]: Without dead ends: 4398 [2022-01-10 13:11:30,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 13:11:30,010 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1195 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 19 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:30,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1195 Valid, 1010 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 599 Invalid, 11 Unknown, 0 Unchecked, 26.1s Time] [2022-01-10 13:11:30,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2022-01-10 13:11:30,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 1947. [2022-01-10 13:11:30,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1947 states, 1946 states have (on average 1.5328879753340185) internal successors, (2983), 1946 states have internal predecessors, (2983), 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 13:11:30,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2983 transitions. [2022-01-10 13:11:30,618 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2983 transitions. Word has length 65 [2022-01-10 13:11:30,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:30,621 INFO L470 AbstractCegarLoop]: Abstraction has 1947 states and 2983 transitions. [2022-01-10 13:11:30,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 13:11:30,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2983 transitions. [2022-01-10 13:11:30,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 13:11:30,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:30,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:11:30,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:11:30,623 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:30,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:30,623 INFO L85 PathProgramCache]: Analyzing trace with hash -348547514, now seen corresponding path program 1 times [2022-01-10 13:11:30,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:30,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661161354] [2022-01-10 13:11:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:30,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:30,962 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 13:11:30,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:30,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661161354] [2022-01-10 13:11:30,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661161354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:30,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:30,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 13:11:30,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045994917] [2022-01-10 13:11:30,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:30,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 13:11:30,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:30,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 13:11:30,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 13:11:30,964 INFO L87 Difference]: Start difference. First operand 1947 states and 2983 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 13:11:33,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:35,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:38,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:41,798 WARN L534 Checker$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 13:11:43,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:46,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:48,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:50,017 INFO L93 Difference]: Finished difference Result 6860 states and 10606 transitions. [2022-01-10 13:11:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 13:11:50,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 65 [2022-01-10 13:11:50,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:50,032 INFO L225 Difference]: With dead ends: 6860 [2022-01-10 13:11:50,032 INFO L226 Difference]: Without dead ends: 5053 [2022-01-10 13:11:50,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-01-10 13:11:50,036 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1316 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 21 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:50,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 731 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 420 Invalid, 7 Unknown, 0 Unchecked, 16.9s Time] [2022-01-10 13:11:50,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5053 states. [2022-01-10 13:11:50,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5053 to 2134. [2022-01-10 13:11:50,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 2133 states have (on average 1.53398968588842) internal successors, (3272), 2133 states have internal predecessors, (3272), 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 13:11:50,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 3272 transitions. [2022-01-10 13:11:50,780 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 3272 transitions. Word has length 65 [2022-01-10 13:11:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:50,781 INFO L470 AbstractCegarLoop]: Abstraction has 2134 states and 3272 transitions. [2022-01-10 13:11:50,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 13:11:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 3272 transitions. [2022-01-10 13:11:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 13:11:50,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:50,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:11:50,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:11:50,782 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:50,782 INFO L85 PathProgramCache]: Analyzing trace with hash -372842836, now seen corresponding path program 1 times [2022-01-10 13:11:50,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:50,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734051990] [2022-01-10 13:11:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:50,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:51,081 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 13:11:51,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:51,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734051990] [2022-01-10 13:11:51,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734051990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:51,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:51,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 13:11:51,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821670874] [2022-01-10 13:11:51,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:51,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 13:11:51,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:51,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 13:11:51,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:11:51,082 INFO L87 Difference]: Start difference. First operand 2134 states and 3272 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 13:11:53,551 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 []