/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/eca-rers2012/Problem12_label26.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-03-31 21:59:05,602 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-03-31 21:59:05,603 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-03-31 21:59:05,637 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-03-31 21:59:05,638 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-03-31 21:59:05,639 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-03-31 21:59:05,640 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-03-31 21:59:05,646 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-03-31 21:59:05,648 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-03-31 21:59:05,653 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-03-31 21:59:05,654 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-03-31 21:59:05,656 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-03-31 21:59:05,657 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-03-31 21:59:05,660 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-03-31 21:59:05,661 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-03-31 21:59:05,663 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-03-31 21:59:05,664 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-03-31 21:59:05,664 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-03-31 21:59:05,667 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-03-31 21:59:05,671 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-03-31 21:59:05,672 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-03-31 21:59:05,673 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-03-31 21:59:05,675 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-03-31 21:59:05,676 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-03-31 21:59:05,683 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-03-31 21:59:05,684 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-03-31 21:59:05,684 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-03-31 21:59:05,685 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-03-31 21:59:05,686 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-03-31 21:59:05,686 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-03-31 21:59:05,687 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-03-31 21:59:05,687 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-03-31 21:59:05,689 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-03-31 21:59:05,689 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-03-31 21:59:05,690 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-03-31 21:59:05,690 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-03-31 21:59:05,691 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-03-31 21:59:05,691 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-03-31 21:59:05,691 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2023-03-31 21:59:05,692 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2023-03-31 21:59:05,692 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-03-31 21:59:05,694 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf
[2023-03-31 21:59:05,727 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-03-31 21:59:05,727 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-03-31 21:59:05,728 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-03-31 21:59:05,728 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-03-31 21:59:05,728 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-03-31 21:59:05,729 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-03-31 21:59:05,729 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-03-31 21:59:05,729 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-03-31 21:59:05,729 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-03-31 21:59:05,729 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-03-31 21:59:05,730 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-03-31 21:59:05,730 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-03-31 21:59:05,730 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-03-31 21:59:05,730 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-03-31 21:59:05,730 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-03-31 21:59:05,731 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-03-31 21:59:05,731 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-03-31 21:59:05,731 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-03-31 21:59:05,731 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-03-31 21:59:05,732 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-03-31 21:59:05,732 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-03-31 21:59:05,732 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-03-31 21:59:05,732 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-03-31 21:59:05,732 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-03-31 21:59:05,732 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-03-31 21:59:05,733 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-03-31 21:59:05,733 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-03-31 21:59:05,733 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-03-31 21:59:05,733 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-03-31 21:59:05,733 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-03-31 21:59:05,733 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-03-31 21:59:05,734 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-03-31 21:59:05,734 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-31 21:59:05,734 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-03-31 21:59:05,734 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-03-31 21:59:05,734 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-03-31 21:59:05,734 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-03-31 21:59:05,735 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-03-31 21:59:05,735 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-03-31 21:59:05,735 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-03-31 21:59:05,735 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-03-31 21:59:05,735 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain
[2023-03-31 21:59:05,959 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-03-31 21:59:05,983 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-03-31 21:59:05,985 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-03-31 21:59:05,986 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-03-31 21:59:05,987 INFO  L275        PluginConnector]: CDTParser initialized
[2023-03-31 21:59:05,987 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label26.c
[2023-03-31 21:59:07,154 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-03-31 21:59:07,624 INFO  L351              CDTParser]: Found 1 translation units.
[2023-03-31 21:59:07,624 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label26.c
[2023-03-31 21:59:07,657 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c02398f5c/cf1a339e69e346868bd821f00101c415/FLAGa18cffed4
[2023-03-31 21:59:07,671 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c02398f5c/cf1a339e69e346868bd821f00101c415
[2023-03-31 21:59:07,673 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-03-31 21:59:07,675 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-03-31 21:59:07,677 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-03-31 21:59:07,678 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-03-31 21:59:07,680 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-03-31 21:59:07,681 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:59:07" (1/1) ...
[2023-03-31 21:59:07,682 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb5226b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:59:07, skipping insertion in model container
[2023-03-31 21:59:07,683 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:59:07" (1/1) ...
[2023-03-31 21:59:07,689 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-03-31 21:59:07,807 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-03-31 21:59:07,992 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label26.c[5703,5716]
[2023-03-31 21:59:08,747 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-31 21:59:08,758 INFO  L203         MainTranslator]: Completed pre-run
[2023-03-31 21:59:08,784 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label26.c[5703,5716]
[2023-03-31 21:59:09,145 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-31 21:59:09,165 INFO  L208         MainTranslator]: Completed translation
[2023-03-31 21:59:09,165 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:59:09 WrapperNode
[2023-03-31 21:59:09,165 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-03-31 21:59:09,167 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-03-31 21:59:09,167 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-03-31 21:59:09,167 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-03-31 21:59:09,176 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:59:09" (1/1) ...
[2023-03-31 21:59:09,177 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:59:09" (1/1) ...
[2023-03-31 21:59:09,225 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:59:09" (1/1) ...
[2023-03-31 21:59:09,226 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:59:09" (1/1) ...
[2023-03-31 21:59:09,325 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:59:09" (1/1) ...
[2023-03-31 21:59:09,345 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:59:09" (1/1) ...
[2023-03-31 21:59:09,382 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:59:09" (1/1) ...
[2023-03-31 21:59:09,398 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:59:09" (1/1) ...
[2023-03-31 21:59:09,428 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-03-31 21:59:09,430 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-03-31 21:59:09,430 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-03-31 21:59:09,430 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-03-31 21:59:09,432 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:59:09" (1/1) ...
[2023-03-31 21:59:09,438 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-31 21:59:09,446 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 21:59:09,462 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)
[2023-03-31 21:59:09,480 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
[2023-03-31 21:59:09,495 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-03-31 21:59:09,496 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-03-31 21:59:09,496 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-03-31 21:59:09,496 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2023-03-31 21:59:09,496 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2023-03-31 21:59:09,496 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2023-03-31 21:59:09,496 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2023-03-31 21:59:09,496 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-03-31 21:59:09,496 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2023-03-31 21:59:09,496 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2023-03-31 21:59:09,496 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2023-03-31 21:59:09,496 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2023-03-31 21:59:09,496 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-03-31 21:59:09,497 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-03-31 21:59:09,497 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-03-31 21:59:09,497 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-03-31 21:59:09,497 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-03-31 21:59:09,497 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-03-31 21:59:09,497 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-03-31 21:59:09,497 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-03-31 21:59:09,497 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-03-31 21:59:09,497 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-03-31 21:59:09,497 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-03-31 21:59:09,497 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-03-31 21:59:09,497 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-03-31 21:59:09,629 INFO  L236             CfgBuilder]: Building ICFG
[2023-03-31 21:59:09,631 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-03-31 21:59:13,205 INFO  L277             CfgBuilder]: Performing block encoding
[2023-03-31 21:59:13,759 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-03-31 21:59:13,760 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-03-31 21:59:13,763 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:59:13 BoogieIcfgContainer
[2023-03-31 21:59:13,763 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-03-31 21:59:13,765 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-03-31 21:59:13,765 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-03-31 21:59:13,767 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-03-31 21:59:13,768 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 09:59:07" (1/3) ...
[2023-03-31 21:59:13,768 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8d7a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:59:13, skipping insertion in model container
[2023-03-31 21:59:13,768 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:59:09" (2/3) ...
[2023-03-31 21:59:13,769 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8d7a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:59:13, skipping insertion in model container
[2023-03-31 21:59:13,769 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:59:13" (3/3) ...
[2023-03-31 21:59:13,770 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem12_label26.c
[2023-03-31 21:59:13,784 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-03-31 21:59:13,785 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-03-31 21:59:13,854 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-03-31 21:59:13,863 INFO  L357      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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@797bafc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-03-31 21:59:13,863 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-03-31 21:59:13,871 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 694 states, 680 states have (on average 1.9764705882352942) internal successors, (1344), 681 states have internal predecessors, (1344), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2023-03-31 21:59:13,877 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2023-03-31 21:59:13,877 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 21:59:13,877 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 21:59:13,878 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 21:59:13,882 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 21:59:13,882 INFO  L85        PathProgramCache]: Analyzing trace with hash 636343553, now seen corresponding path program 1 times
[2023-03-31 21:59:13,890 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-03-31 21:59:13,890 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27399372]
[2023-03-31 21:59:13,891 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 21:59:13,891 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 21:59:13,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 21:59:14,202 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 21:59:14,203 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-03-31 21:59:14,203 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27399372]
[2023-03-31 21:59:14,204 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27399372] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-31 21:59:14,204 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-31 21:59:14,204 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-03-31 21:59:14,205 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618735020]
[2023-03-31 21:59:14,206 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-31 21:59:14,208 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-03-31 21:59:14,209 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-03-31 21:59:14,230 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-03-31 21:59:14,231 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-03-31 21:59:14,234 INFO  L87              Difference]: Start difference. First operand  has 694 states, 680 states have (on average 1.9764705882352942) internal successors, (1344), 681 states have internal predecessors, (1344), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-31 21:59:17,687 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-31 21:59:17,687 INFO  L93              Difference]: Finished difference Result 2068 states and 4065 transitions.
[2023-03-31 21:59:17,688 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-03-31 21:59:17,689 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2023-03-31 21:59:17,690 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-31 21:59:17,709 INFO  L225             Difference]: With dead ends: 2068
[2023-03-31 21:59:17,709 INFO  L226             Difference]: Without dead ends: 1371
[2023-03-31 21:59:17,718 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-03-31 21:59:17,721 INFO  L413           NwaCegarLoop]: 101 mSDtfsCounter, 718 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time
[2023-03-31 21:59:17,722 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 126 Invalid, 2931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time]
[2023-03-31 21:59:17,739 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1371 states.
[2023-03-31 21:59:17,823 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1367.
[2023-03-31 21:59:17,826 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1367 states, 1349 states have (on average 1.9310600444773907) internal successors, (2605), 1349 states have internal predecessors, (2605), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14)
[2023-03-31 21:59:17,835 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 2628 transitions.
[2023-03-31 21:59:17,837 INFO  L78                 Accepts]: Start accepts. Automaton has 1367 states and 2628 transitions. Word has length 11
[2023-03-31 21:59:17,837 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-31 21:59:17,837 INFO  L495      AbstractCegarLoop]: Abstraction has 1367 states and 2628 transitions.
[2023-03-31 21:59:17,837 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-03-31 21:59:17,838 INFO  L276                IsEmpty]: Start isEmpty. Operand 1367 states and 2628 transitions.
[2023-03-31 21:59:17,839 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2023-03-31 21:59:17,839 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 21:59:17,839 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 21:59:17,839 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-03-31 21:59:17,839 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 21:59:17,840 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 21:59:17,840 INFO  L85        PathProgramCache]: Analyzing trace with hash -1562293180, now seen corresponding path program 1 times
[2023-03-31 21:59:17,840 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-03-31 21:59:17,840 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891278147]
[2023-03-31 21:59:17,840 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 21:59:17,840 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 21:59:17,874 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 21:59:18,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 21:59:18,048 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-03-31 21:59:18,048 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891278147]
[2023-03-31 21:59:18,048 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891278147] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-31 21:59:18,048 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-31 21:59:18,048 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-03-31 21:59:18,048 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864755517]
[2023-03-31 21:59:18,049 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-31 21:59:18,050 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-03-31 21:59:18,050 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-03-31 21:59:18,050 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-03-31 21:59:18,050 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-03-31 21:59:18,051 INFO  L87              Difference]: Start difference. First operand 1367 states and 2628 transitions. Second operand  has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-31 21:59:22,448 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-31 21:59:22,449 INFO  L93              Difference]: Finished difference Result 4145 states and 7983 transitions.
[2023-03-31 21:59:22,449 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-03-31 21:59:22,450 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21
[2023-03-31 21:59:22,450 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-31 21:59:22,466 INFO  L225             Difference]: With dead ends: 4145
[2023-03-31 21:59:22,466 INFO  L226             Difference]: Without dead ends: 2783
[2023-03-31 21:59:22,476 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-03-31 21:59:22,481 INFO  L413           NwaCegarLoop]: 30 mSDtfsCounter, 2704 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4011 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2704 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 4681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 4011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2023-03-31 21:59:22,485 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2704 Valid, 89 Invalid, 4681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 4011 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time]
[2023-03-31 21:59:22,489 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2783 states.
[2023-03-31 21:59:22,589 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2754.
[2023-03-31 21:59:22,593 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2754 states, 2712 states have (on average 1.6950589970501475) internal successors, (4597), 2716 states have internal predecessors, (4597), 15 states have call successors, (15), 15 states have call predecessors, (15), 26 states have return successors, (62), 22 states have call predecessors, (62), 14 states have call successors, (62)
[2023-03-31 21:59:22,605 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 4674 transitions.
[2023-03-31 21:59:22,605 INFO  L78                 Accepts]: Start accepts. Automaton has 2754 states and 4674 transitions. Word has length 21
[2023-03-31 21:59:22,606 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-31 21:59:22,606 INFO  L495      AbstractCegarLoop]: Abstraction has 2754 states and 4674 transitions.
[2023-03-31 21:59:22,606 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-31 21:59:22,606 INFO  L276                IsEmpty]: Start isEmpty. Operand 2754 states and 4674 transitions.
[2023-03-31 21:59:22,607 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2023-03-31 21:59:22,607 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 21:59:22,607 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 21:59:22,608 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-03-31 21:59:22,608 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 21:59:22,608 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 21:59:22,608 INFO  L85        PathProgramCache]: Analyzing trace with hash -829035240, now seen corresponding path program 1 times
[2023-03-31 21:59:22,608 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-03-31 21:59:22,609 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827803467]
[2023-03-31 21:59:22,609 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 21:59:22,609 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 21:59:22,647 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 21:59:22,841 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 21:59:22,841 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-03-31 21:59:22,841 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827803467]
[2023-03-31 21:59:22,841 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827803467] provided 0 perfect and 1 imperfect interpolant sequences
[2023-03-31 21:59:22,842 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585275273]
[2023-03-31 21:59:22,842 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 21:59:22,842 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 21:59:22,842 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 21:59:22,845 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)
[2023-03-31 21:59:22,847 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-03-31 21:59:22,931 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 21:59:22,933 INFO  L262         TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-03-31 21:59:22,938 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-31 21:59:23,007 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-03-31 21:59:23,007 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-03-31 21:59:23,121 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-03-31 21:59:23,122 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585275273] provided 1 perfect and 1 imperfect interpolant sequences
[2023-03-31 21:59:23,122 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-03-31 21:59:23,122 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 10
[2023-03-31 21:59:23,122 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500375425]
[2023-03-31 21:59:23,122 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-31 21:59:23,123 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-03-31 21:59:23,123 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-03-31 21:59:23,123 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-03-31 21:59:23,123 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2023-03-31 21:59:23,124 INFO  L87              Difference]: Start difference. First operand 2754 states and 4674 transitions. Second operand  has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-31 21:59:26,701 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-31 21:59:26,701 INFO  L93              Difference]: Finished difference Result 8312 states and 14286 transitions.
[2023-03-31 21:59:26,703 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-03-31 21:59:26,703 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27
[2023-03-31 21:59:26,704 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-31 21:59:26,728 INFO  L225             Difference]: With dead ends: 8312
[2023-03-31 21:59:26,728 INFO  L226             Difference]: Without dead ends: 5563
[2023-03-31 21:59:26,735 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2023-03-31 21:59:26,736 INFO  L413           NwaCegarLoop]: 27 mSDtfsCounter, 2196 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 1175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 3638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1175 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2023-03-31 21:59:26,736 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2196 Valid, 50 Invalid, 3638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1175 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2023-03-31 21:59:26,742 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5563 states.
[2023-03-31 21:59:26,871 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 5402.
[2023-03-31 21:59:26,882 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 5402 states, 5300 states have (on average 1.4671698113207547) internal successors, (7776), 5316 states have internal predecessors, (7776), 27 states have call successors, (27), 27 states have call predecessors, (27), 74 states have return successors, (298), 58 states have call predecessors, (298), 26 states have call successors, (298)
[2023-03-31 21:59:26,903 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 8101 transitions.
[2023-03-31 21:59:26,904 INFO  L78                 Accepts]: Start accepts. Automaton has 5402 states and 8101 transitions. Word has length 27
[2023-03-31 21:59:26,904 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-31 21:59:26,905 INFO  L495      AbstractCegarLoop]: Abstraction has 5402 states and 8101 transitions.
[2023-03-31 21:59:26,905 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-31 21:59:26,905 INFO  L276                IsEmpty]: Start isEmpty. Operand 5402 states and 8101 transitions.
[2023-03-31 21:59:26,913 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2023-03-31 21:59:26,913 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 21:59:26,914 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 21:59:26,925 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-03-31 21:59:27,120 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 21:59:27,121 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 21:59:27,121 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 21:59:27,122 INFO  L85        PathProgramCache]: Analyzing trace with hash 1444938249, now seen corresponding path program 1 times
[2023-03-31 21:59:27,122 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-03-31 21:59:27,122 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544058135]
[2023-03-31 21:59:27,122 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 21:59:27,122 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 21:59:27,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 21:59:27,442 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 21:59:27,443 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-03-31 21:59:27,443 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544058135]
[2023-03-31 21:59:27,443 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544058135] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-31 21:59:27,443 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-31 21:59:27,443 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-03-31 21:59:27,443 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453277989]
[2023-03-31 21:59:27,443 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-31 21:59:27,444 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-03-31 21:59:27,445 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-03-31 21:59:27,445 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-03-31 21:59:27,446 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-03-31 21:59:27,446 INFO  L87              Difference]: Start difference. First operand 5402 states and 8101 transitions. Second operand  has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-31 21:59:31,153 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-31 21:59:31,154 INFO  L93              Difference]: Finished difference Result 16668 states and 26548 transitions.
[2023-03-31 21:59:31,154 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-03-31 21:59:31,154 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72
[2023-03-31 21:59:31,155 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-31 21:59:31,216 INFO  L225             Difference]: With dead ends: 16668
[2023-03-31 21:59:31,216 INFO  L226             Difference]: Without dead ends: 11271
[2023-03-31 21:59:31,232 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2023-03-31 21:59:31,237 INFO  L413           NwaCegarLoop]: 42 mSDtfsCounter, 2478 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 3795 mSolverCounterSat, 1089 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2478 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 4884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1089 IncrementalHoareTripleChecker+Valid, 3795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time
[2023-03-31 21:59:31,238 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2478 Valid, 101 Invalid, 4884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1089 Valid, 3795 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time]
[2023-03-31 21:59:31,251 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11271 states.
[2023-03-31 21:59:31,551 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11271 to 11096.
[2023-03-31 21:59:31,572 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11096 states, 10779 states have (on average 1.4043974394656276) internal successors, (15138), 10858 states have internal predecessors, (15138), 51 states have call successors, (51), 51 states have call predecessors, (51), 265 states have return successors, (1566), 186 states have call predecessors, (1566), 50 states have call successors, (1566)
[2023-03-31 21:59:31,597 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11096 states to 11096 states and 16755 transitions.
[2023-03-31 21:59:31,597 INFO  L78                 Accepts]: Start accepts. Automaton has 11096 states and 16755 transitions. Word has length 72
[2023-03-31 21:59:31,598 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-31 21:59:31,598 INFO  L495      AbstractCegarLoop]: Abstraction has 11096 states and 16755 transitions.
[2023-03-31 21:59:31,598 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-31 21:59:31,598 INFO  L276                IsEmpty]: Start isEmpty. Operand 11096 states and 16755 transitions.
[2023-03-31 21:59:31,601 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2023-03-31 21:59:31,601 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 21:59:31,601 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 21:59:31,602 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-03-31 21:59:31,602 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 21:59:31,602 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 21:59:31,602 INFO  L85        PathProgramCache]: Analyzing trace with hash -1540168278, now seen corresponding path program 1 times
[2023-03-31 21:59:31,602 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-03-31 21:59:31,602 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036766851]
[2023-03-31 21:59:31,602 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 21:59:31,603 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 21:59:31,644 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 21:59:31,786 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 21:59:31,789 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-03-31 21:59:31,789 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036766851]
[2023-03-31 21:59:31,790 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036766851] provided 0 perfect and 1 imperfect interpolant sequences
[2023-03-31 21:59:31,790 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586785891]
[2023-03-31 21:59:31,790 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 21:59:31,791 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 21:59:31,791 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 21:59:31,793 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)
[2023-03-31 21:59:31,818 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-03-31 21:59:31,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 21:59:31,913 INFO  L262         TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-03-31 21:59:31,917 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-31 21:59:32,020 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 21:59:32,020 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-03-31 21:59:32,217 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 21:59:32,218 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586785891] provided 0 perfect and 2 imperfect interpolant sequences
[2023-03-31 21:59:32,218 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [853106515]
[2023-03-31 21:59:32,246 INFO  L159        IcfgInterpreter]: Started Sifa with 56 locations of interest
[2023-03-31 21:59:32,246 INFO  L166        IcfgInterpreter]: Building call graph
[2023-03-31 21:59:32,249 INFO  L171        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2023-03-31 21:59:32,254 INFO  L176        IcfgInterpreter]: Starting interpretation
[2023-03-31 21:59:32,254 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2023-03-31 21:59:32,449 INFO  L197        IcfgInterpreter]: Interpreting procedure main with input of size 52 for LOIs
[2023-03-31 21:59:32,615 WARN  L137   XnfTransformerHelper]: expecting exponential blowup for input size 39
[2023-03-31 21:59:32,860 WARN  L137   XnfTransformerHelper]: expecting exponential blowup for input size 22
[2023-03-31 21:59:33,648 INFO  L197        IcfgInterpreter]: Interpreting procedure calculate_output with input of size 49 for LOIs
[2023-03-31 21:59:33,837 WARN  L137   XnfTransformerHelper]: expecting exponential blowup for input size 39
[2023-03-31 21:59:35,786 WARN  L137   XnfTransformerHelper]: expecting exponential blowup for input size 22
[2023-03-31 21:59:36,953 WARN  L176   XnfTransformerHelper]: Simplifying disjunction of 112545 conjuctions. This might take some time...