/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/loops-crafted-1/loopv3.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 14:31:05,936 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 14:31:05,938 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 14:31:06,007 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 14:31:06,008 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 14:31:06,009 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 14:31:06,010 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 14:31:06,013 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 14:31:06,015 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 14:31:06,017 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 14:31:06,018 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 14:31:06,018 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 14:31:06,019 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 14:31:06,020 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 14:31:06,021 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 14:31:06,021 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 14:31:06,022 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 14:31:06,023 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 14:31:06,025 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 14:31:06,026 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 14:31:06,027 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 14:31:06,028 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 14:31:06,028 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 14:31:06,030 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 14:31:06,031 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 14:31:06,031 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 14:31:06,032 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 14:31:06,032 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 14:31:06,033 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 14:31:06,033 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 14:31:06,033 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 14:31:06,034 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 14:31:06,035 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 14:31:06,035 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 14:31:06,036 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 14:31:06,036 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 14:31:06,036 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 14:31:06,037 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 14:31:06,037 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 14:31:06,038 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 14:31:06,043 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 14:31:06,065 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 14:31:06,066 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 14:31:06,066 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 14:31:06,066 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 14:31:06,067 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 14:31:06,067 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 14:31:06,067 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 14:31:06,067 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 14:31:06,068 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 14:31:06,068 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 14:31:06,068 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 14:31:06,068 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 14:31:06,068 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 14:31:06,068 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 14:31:06,068 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 14:31:06,069 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 14:31:06,069 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 14:31:06,069 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 14:31:06,069 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 14:31:06,069 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 14:31:06,069 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 14:31:06,069 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 14:31:06,069 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 14:31:06,070 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 14:31:06,070 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 14:31:06,070 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 14:31:06,070 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 14:31:06,070 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 14:31:06,070 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 14:31:06,071 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 14:31:06,071 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 14:31:06,072 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 14:31:06,074 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 14:31:06,074 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 14:31:06,295 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 14:31:06,314 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 14:31:06,317 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 14:31:06,317 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 14:31:06,318 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 14:31:06,319 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv3.c
[2022-01-10 14:31:06,373 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5264d1542/cd37dc5a452d458bacfbf2e7b2b73f93/FLAG6dbcb610f
[2022-01-10 14:31:06,708 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 14:31:06,708 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c
[2022-01-10 14:31:06,712 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5264d1542/cd37dc5a452d458bacfbf2e7b2b73f93/FLAG6dbcb610f
[2022-01-10 14:31:07,143 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5264d1542/cd37dc5a452d458bacfbf2e7b2b73f93
[2022-01-10 14:31:07,145 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 14:31:07,146 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 14:31:07,149 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 14:31:07,149 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 14:31:07,152 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 14:31:07,152 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:31:07" (1/1) ...
[2022-01-10 14:31:07,153 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e97140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:07, skipping insertion in model container
[2022-01-10 14:31:07,153 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:31:07" (1/1) ...
[2022-01-10 14:31:07,159 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 14:31:07,169 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 14:31:07,293 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469]
[2022-01-10 14:31:07,300 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 14:31:07,321 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 14:31:07,352 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469]
[2022-01-10 14:31:07,354 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 14:31:07,363 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 14:31:07,363 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:07 WrapperNode
[2022-01-10 14:31:07,363 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 14:31:07,364 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 14:31:07,364 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 14:31:07,364 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 14:31:07,370 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:07" (1/1) ...
[2022-01-10 14:31:07,376 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:07" (1/1) ...
[2022-01-10 14:31:07,389 INFO  L137                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34
[2022-01-10 14:31:07,389 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 14:31:07,390 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 14:31:07,390 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 14:31:07,390 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 14:31:07,396 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:07" (1/1) ...
[2022-01-10 14:31:07,396 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:07" (1/1) ...
[2022-01-10 14:31:07,398 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:07" (1/1) ...
[2022-01-10 14:31:07,398 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:07" (1/1) ...
[2022-01-10 14:31:07,401 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:07" (1/1) ...
[2022-01-10 14:31:07,403 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:07" (1/1) ...
[2022-01-10 14:31:07,404 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:07" (1/1) ...
[2022-01-10 14:31:07,406 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 14:31:07,406 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 14:31:07,406 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 14:31:07,407 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 14:31:07,411 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:07" (1/1) ...
[2022-01-10 14:31:07,418 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 14:31:07,429 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 14:31:07,440 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 14:31:07,445 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 14:31:07,469 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 14:31:07,469 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 14:31:07,469 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 14:31:07,469 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 14:31:07,512 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 14:31:07,514 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 14:31:07,590 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 14:31:07,594 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 14:31:07,595 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 14:31:07,596 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:31:07 BoogieIcfgContainer
[2022-01-10 14:31:07,596 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 14:31:07,597 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 14:31:07,597 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 14:31:07,598 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 14:31:07,600 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:31:07" (1/1) ...
[2022-01-10 14:31:07,648 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:31:07 BasicIcfg
[2022-01-10 14:31:07,648 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 14:31:07,650 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 14:31:07,650 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 14:31:07,652 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 14:31:07,652 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:31:07" (1/4) ...
[2022-01-10 14:31:07,653 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cedb153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:31:07, skipping insertion in model container
[2022-01-10 14:31:07,653 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:31:07" (2/4) ...
[2022-01-10 14:31:07,653 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cedb153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:31:07, skipping insertion in model container
[2022-01-10 14:31:07,654 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:31:07" (3/4) ...
[2022-01-10 14:31:07,654 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cedb153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:31:07, skipping insertion in model container
[2022-01-10 14:31:07,654 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:31:07" (4/4) ...
[2022-01-10 14:31:07,655 INFO  L111   eAbstractionObserver]: Analyzing ICFG loopv3.cTransformedIcfg
[2022-01-10 14:31:07,659 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 14:31:07,659 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 14:31:07,690 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 14:31:07,696 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 14:31:07,696 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 14:31:07,706 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 14:31:07,709 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 14:31:07,709 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:31:07,710 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 14:31:07,710 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:31:07,714 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:31:07,715 INFO  L85        PathProgramCache]: Analyzing trace with hash 1953496263, now seen corresponding path program 1 times
[2022-01-10 14:31:07,721 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:31:07,722 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61738713]
[2022-01-10 14:31:07,722 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:31:07,723 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:31:07,794 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:31:07,830 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 14:31:07,830 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:31:07,831 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61738713]
[2022-01-10 14:31:07,831 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61738713] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 14:31:07,831 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 14:31:07,832 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 14:31:07,833 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424002911]
[2022-01-10 14:31:07,833 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 14:31:07,837 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 14:31:07,837 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 14:31:07,859 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 14:31:07,860 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 14:31:07,862 INFO  L87              Difference]: Start difference. First operand  has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 14:31:07,872 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 14:31:07,872 INFO  L93              Difference]: Finished difference Result 20 states and 23 transitions.
[2022-01-10 14:31:07,873 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 14:31:07,874 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6
[2022-01-10 14:31:07,874 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 14:31:07,879 INFO  L225             Difference]: With dead ends: 20
[2022-01-10 14:31:07,880 INFO  L226             Difference]: Without dead ends: 8
[2022-01-10 14:31:07,882 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 14:31:07,885 INFO  L933         BasicCegarLoop]: 13 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, 13 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 14:31:07,886 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 14:31:07,899 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8 states.
[2022-01-10 14:31:07,908 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8.
[2022-01-10 14:31:07,909 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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 14:31:07,909 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions.
[2022-01-10 14:31:07,910 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6
[2022-01-10 14:31:07,911 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 14:31:07,911 INFO  L470      AbstractCegarLoop]: Abstraction has 8 states and 9 transitions.
[2022-01-10 14:31:07,911 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 14:31:07,911 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions.
[2022-01-10 14:31:07,911 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-01-10 14:31:07,911 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:31:07,912 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-01-10 14:31:07,912 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 14:31:07,912 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:31:07,913 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:31:07,913 INFO  L85        PathProgramCache]: Analyzing trace with hash 1953526054, now seen corresponding path program 1 times
[2022-01-10 14:31:07,913 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:31:07,913 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412068517]
[2022-01-10 14:31:07,914 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:31:07,914 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:31:07,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:31:08,057 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 14:31:08,058 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:31:08,058 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412068517]
[2022-01-10 14:31:08,058 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412068517] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 14:31:08,058 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 14:31:08,058 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 14:31:08,059 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297674313]
[2022-01-10 14:31:08,059 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 14:31:08,060 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 14:31:08,060 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 14:31:08,061 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 14:31:08,061 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 14:31:08,061 INFO  L87              Difference]: Start difference. First operand 8 states and 9 transitions. Second operand  has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 14:31:08,115 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 14:31:08,115 INFO  L93              Difference]: Finished difference Result 14 states and 16 transitions.
[2022-01-10 14:31:08,116 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 14:31:08,116 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 6
[2022-01-10 14:31:08,116 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 14:31:08,117 INFO  L225             Difference]: With dead ends: 14
[2022-01-10 14:31:08,118 INFO  L226             Difference]: Without dead ends: 10
[2022-01-10 14:31:08,118 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 14:31:08,119 INFO  L933         BasicCegarLoop]: 5 mSDtfsCounter, 10 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 7 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 14:31:08,120 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 14:31:08,120 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2022-01-10 14:31:08,123 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2022-01-10 14:31:08,123 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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 14:31:08,123 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions.
[2022-01-10 14:31:08,123 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6
[2022-01-10 14:31:08,124 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 14:31:08,124 INFO  L470      AbstractCegarLoop]: Abstraction has 9 states and 10 transitions.
[2022-01-10 14:31:08,124 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 14:31:08,124 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions.
[2022-01-10 14:31:08,124 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-01-10 14:31:08,124 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:31:08,125 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 14:31:08,125 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 14:31:08,125 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:31:08,125 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:31:08,126 INFO  L85        PathProgramCache]: Analyzing trace with hash 467229864, now seen corresponding path program 1 times
[2022-01-10 14:31:08,126 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:31:08,126 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021722690]
[2022-01-10 14:31:08,126 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:31:08,126 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:31:08,166 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:31:08,361 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:31:08,362 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:31:08,362 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021722690]
[2022-01-10 14:31:08,362 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021722690] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 14:31:08,362 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962879170]
[2022-01-10 14:31:08,363 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:31:08,363 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 14:31:08,363 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 14:31:08,364 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 14:31:08,379 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-10 14:31:08,471 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:31:08,472 INFO  L263         TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 14:31:08,476 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 14:31:09,251 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:31:09,252 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 14:31:09,413 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:31:09,414 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [962879170] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 14:31:09,414 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 14:31:09,414 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10
[2022-01-10 14:31:09,414 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072968741]
[2022-01-10 14:31:09,415 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 14:31:09,415 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-10 14:31:09,415 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 14:31:09,416 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-10 14:31:09,416 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2022-01-10 14:31:09,416 INFO  L87              Difference]: Start difference. First operand 9 states and 10 transitions. Second operand  has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 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 14:31:10,036 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 14:31:10,036 INFO  L93              Difference]: Finished difference Result 21 states and 29 transitions.
[2022-01-10 14:31:10,037 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-01-10 14:31:10,037 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 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 8
[2022-01-10 14:31:10,037 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 14:31:10,038 INFO  L225             Difference]: With dead ends: 21
[2022-01-10 14:31:10,038 INFO  L226             Difference]: Without dead ends: 17
[2022-01-10 14:31:10,038 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210
[2022-01-10 14:31:10,040 INFO  L933         BasicCegarLoop]: 4 mSDtfsCounter, 37 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-10 14:31:10,040 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 8 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-10 14:31:10,041 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2022-01-10 14:31:10,045 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15.
[2022-01-10 14:31:10,046 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 14:31:10,047 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions.
[2022-01-10 14:31:10,047 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8
[2022-01-10 14:31:10,047 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 14:31:10,047 INFO  L470      AbstractCegarLoop]: Abstraction has 15 states and 19 transitions.
[2022-01-10 14:31:10,048 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 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 14:31:10,048 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions.
[2022-01-10 14:31:10,048 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-10 14:31:10,048 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:31:10,049 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1]
[2022-01-10 14:31:10,067 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-10 14:31:10,260 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 14:31:10,260 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:31:10,261 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:31:10,261 INFO  L85        PathProgramCache]: Analyzing trace with hash -443577298, now seen corresponding path program 2 times
[2022-01-10 14:31:10,261 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:31:10,262 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710562828]
[2022-01-10 14:31:10,262 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:31:10,262 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:31:10,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:31:10,578 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:31:10,578 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:31:10,578 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710562828]
[2022-01-10 14:31:10,578 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710562828] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 14:31:10,579 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790666591]
[2022-01-10 14:31:10,579 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 14:31:10,579 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 14:31:10,579 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 14:31:10,584 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 14:31:10,620 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-10 14:31:10,700 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 14:31:10,700 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 14:31:10,702 INFO  L263         TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core
[2022-01-10 14:31:10,703 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 14:31:25,131 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:31:25,132 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 14:31:32,076 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:31:32,076 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [790666591] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 14:31:32,077 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 14:31:32,077 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18
[2022-01-10 14:31:32,077 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604179900]
[2022-01-10 14:31:32,077 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 14:31:32,077 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2022-01-10 14:31:32,078 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 14:31:32,078 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2022-01-10 14:31:32,079 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=231, Unknown=8, NotChecked=0, Total=342
[2022-01-10 14:31:32,079 INFO  L87              Difference]: Start difference. First operand 15 states and 19 transitions. Second operand  has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 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 14:31:57,206 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 14:31:59,312 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 14:32:01,424 WARN  L534   Checker$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 14:32:02,005 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 14:32:02,005 INFO  L93              Difference]: Finished difference Result 46 states and 64 transitions.
[2022-01-10 14:32:02,007 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2022-01-10 14:32:02,008 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 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 14
[2022-01-10 14:32:02,008 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 14:32:02,009 INFO  L225             Difference]: With dead ends: 46
[2022-01-10 14:32:02,009 INFO  L226             Difference]: Without dead ends: 42
[2022-01-10 14:32:02,009 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 42.4s TimeCoverageRelationStatistics Valid=215, Invalid=472, Unknown=15, NotChecked=0, Total=702
[2022-01-10 14:32:02,010 INFO  L933         BasicCegarLoop]: 7 mSDtfsCounter, 21 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time
[2022-01-10 14:32:02,011 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 38 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 103 Invalid, 3 Unknown, 81 Unchecked, 7.9s Time]
[2022-01-10 14:32:02,011 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2022-01-10 14:32:02,022 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36.
[2022-01-10 14:32:02,022 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36 states, 35 states have (on average 1.457142857142857) internal successors, (51), 35 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 14:32:02,023 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions.
[2022-01-10 14:32:02,023 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 14
[2022-01-10 14:32:02,023 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 14:32:02,023 INFO  L470      AbstractCegarLoop]: Abstraction has 36 states and 51 transitions.
[2022-01-10 14:32:02,024 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 18 states have internal predecessors, (34), 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 14:32:02,024 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions.
[2022-01-10 14:32:02,024 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-01-10 14:32:02,024 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 14:32:02,024 INFO  L514         BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 14:32:02,031 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-10 14:32:02,229 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2022-01-10 14:32:02,229 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 14:32:02,230 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 14:32:02,230 INFO  L85        PathProgramCache]: Analyzing trace with hash -442653777, now seen corresponding path program 1 times
[2022-01-10 14:32:02,230 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 14:32:02,230 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588352247]
[2022-01-10 14:32:02,230 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:32:02,230 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 14:32:02,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:32:02,446 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:32:02,446 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 14:32:02,446 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588352247]
[2022-01-10 14:32:02,446 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588352247] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 14:32:02,446 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994284500]
[2022-01-10 14:32:02,446 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 14:32:02,447 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 14:32:02,447 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 14:32:02,452 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 14:32:02,468 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-10 14:32:02,576 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 14:32:02,577 INFO  L263         TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjunts are in the unsatisfiable core
[2022-01-10 14:32:02,579 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 14:32:14,402 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 14:32:14,403 INFO  L328         TraceCheckSpWp]: Computing backward predicates...