/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 OctagonDomain -i ../sv-benchmarks/c/forester-heap/dll-circular-1.i


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-02 21:31:47,083 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-02 21:31:47,085 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-02 21:31:47,108 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-02 21:31:47,109 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-02 21:31:47,110 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-02 21:31:47,111 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-02 21:31:47,113 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-02 21:31:47,114 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-02 21:31:47,115 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-02 21:31:47,116 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-02 21:31:47,117 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-02 21:31:47,117 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-04-02 21:31:47,118 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-04-02 21:31:47,119 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-02 21:31:47,120 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-02 21:31:47,121 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-02 21:31:47,121 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-02 21:31:47,123 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-02 21:31:47,124 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-02 21:31:47,126 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-02 21:31:47,127 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-02 21:31:47,127 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-02 21:31:47,128 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-02 21:31:47,131 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-04-02 21:31:47,132 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-04-02 21:31:47,132 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-04-02 21:31:47,133 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-04-02 21:31:47,133 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-04-02 21:31:47,134 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-02 21:31:47,134 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-04-02 21:31:47,135 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-04-02 21:31:47,135 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-02 21:31:47,136 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-02 21:31:47,136 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-04-02 21:31:47,137 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-04-02 21:31:47,137 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-04-02 21:31:47,137 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-04-02 21:31:47,138 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2023-04-02 21:31:47,138 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2023-04-02 21:31:47,139 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-02 21:31:47,141 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
[2023-04-02 21:31:47,172 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-02 21:31:47,172 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-02 21:31:47,172 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-02 21:31:47,173 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-02 21:31:47,173 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-02 21:31:47,174 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-02 21:31:47,174 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-02 21:31:47,174 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-02 21:31:47,174 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-02 21:31:47,174 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-02 21:31:47,175 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-02 21:31:47,175 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-02 21:31:47,175 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-02 21:31:47,175 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-02 21:31:47,175 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-02 21:31:47,175 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-02 21:31:47,176 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-02 21:31:47,176 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-02 21:31:47,176 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-02 21:31:47,176 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-02 21:31:47,177 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-02 21:31:47,177 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-02 21:31:47,177 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-02 21:31:47,177 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-02 21:31:47,177 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-02 21:31:47,177 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-02 21:31:47,177 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-02 21:31:47,177 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-02 21:31:47,177 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-02 21:31:47,178 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-02 21:31:47,178 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-02 21:31:47,178 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-02 21:31:47,178 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-02 21:31:47,178 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-02 21:31:47,178 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-02 21:31:47,179 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-02 21:31:47,179 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-02 21:31:47,179 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-02 21:31:47,179 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-02 21:31:47,179 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-02 21:31:47,179 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-02 21:31:47,179 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-02 21:31:47,429 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-02 21:31:47,448 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-02 21:31:47,451 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-02 21:31:47,452 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-02 21:31:47,452 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-02 21:31:47,454 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-circular-1.i
[2023-04-02 21:31:48,597 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-02 21:31:48,813 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-02 21:31:48,814 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-circular-1.i
[2023-04-02 21:31:48,832 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79448259/d0b2666d56e64919bc716ea8ee1bf0d6/FLAG3154ef1be
[2023-04-02 21:31:49,177 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79448259/d0b2666d56e64919bc716ea8ee1bf0d6
[2023-04-02 21:31:49,179 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-02 21:31:49,181 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-02 21:31:49,184 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-02 21:31:49,184 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-02 21:31:49,191 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-02 21:31:49,192 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:31:49" (1/1) ...
[2023-04-02 21:31:49,194 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54d32093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:31:49, skipping insertion in model container
[2023-04-02 21:31:49,194 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:31:49" (1/1) ...
[2023-04-02 21:31:49,201 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-02 21:31:49,233 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-02 21:31:49,442 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/forester-heap/dll-circular-1.i[22365,22378]
[2023-04-02 21:31:49,447 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/forester-heap/dll-circular-1.i[22471,22484]
[2023-04-02 21:31:49,449 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/forester-heap/dll-circular-1.i[22595,22608]
[2023-04-02 21:31:49,452 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-02 21:31:49,461 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-02 21:31:49,501 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/forester-heap/dll-circular-1.i[22365,22378]
[2023-04-02 21:31:49,502 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/forester-heap/dll-circular-1.i[22471,22484]
[2023-04-02 21:31:49,503 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/forester-heap/dll-circular-1.i[22595,22608]
[2023-04-02 21:31:49,505 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-02 21:31:49,538 INFO  L208         MainTranslator]: Completed translation
[2023-04-02 21:31:49,538 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:31:49 WrapperNode
[2023-04-02 21:31:49,539 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-02 21:31:49,540 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-02 21:31:49,540 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-02 21:31:49,540 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-02 21:31:49,550 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:31:49" (1/1) ...
[2023-04-02 21:31:49,550 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:31:49" (1/1) ...
[2023-04-02 21:31:49,571 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:31:49" (1/1) ...
[2023-04-02 21:31:49,572 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:31:49" (1/1) ...
[2023-04-02 21:31:49,587 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:31:49" (1/1) ...
[2023-04-02 21:31:49,592 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:31:49" (1/1) ...
[2023-04-02 21:31:49,594 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:31:49" (1/1) ...
[2023-04-02 21:31:49,596 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:31:49" (1/1) ...
[2023-04-02 21:31:49,600 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-02 21:31:49,601 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-02 21:31:49,602 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-02 21:31:49,602 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-02 21:31:49,602 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:31:49" (1/1) ...
[2023-04-02 21:31:49,608 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-02 21:31:49,627 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-02 21:31:49,644 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)
[2023-04-02 21:31:49,646 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
[2023-04-02 21:31:49,672 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-02 21:31:49,672 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-02 21:31:49,672 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-02 21:31:49,672 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-02 21:31:49,673 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2023-04-02 21:31:49,673 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2023-04-02 21:31:49,673 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2023-04-02 21:31:49,673 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2023-04-02 21:31:49,673 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2023-04-02 21:31:49,673 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2023-04-02 21:31:49,673 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2023-04-02 21:31:49,673 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2023-04-02 21:31:49,673 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2023-04-02 21:31:49,673 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2023-04-02 21:31:49,673 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2023-04-02 21:31:49,674 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2023-04-02 21:31:49,674 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2023-04-02 21:31:49,674 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2023-04-02 21:31:49,674 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2023-04-02 21:31:49,674 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2023-04-02 21:31:49,674 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2023-04-02 21:31:49,674 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2023-04-02 21:31:49,674 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2023-04-02 21:31:49,674 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2023-04-02 21:31:49,674 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2023-04-02 21:31:49,674 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2023-04-02 21:31:49,674 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2023-04-02 21:31:49,675 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2023-04-02 21:31:49,675 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2023-04-02 21:31:49,675 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2023-04-02 21:31:49,675 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2023-04-02 21:31:49,675 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2023-04-02 21:31:49,675 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2023-04-02 21:31:49,675 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2023-04-02 21:31:49,675 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2023-04-02 21:31:49,675 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2023-04-02 21:31:49,676 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2023-04-02 21:31:49,676 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2023-04-02 21:31:49,676 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2023-04-02 21:31:49,676 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2023-04-02 21:31:49,676 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2023-04-02 21:31:49,676 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2023-04-02 21:31:49,676 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2023-04-02 21:31:49,676 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2023-04-02 21:31:49,676 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2023-04-02 21:31:49,677 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2023-04-02 21:31:49,694 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2023-04-02 21:31:49,694 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2023-04-02 21:31:49,694 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2023-04-02 21:31:49,694 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2023-04-02 21:31:49,695 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2023-04-02 21:31:49,695 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2023-04-02 21:31:49,695 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2023-04-02 21:31:49,695 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2023-04-02 21:31:49,696 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2023-04-02 21:31:49,696 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2023-04-02 21:31:49,697 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2023-04-02 21:31:49,697 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2023-04-02 21:31:49,697 INFO  L130     BoogieDeclarations]: Found specification of procedure cfree
[2023-04-02 21:31:49,697 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2023-04-02 21:31:49,697 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2023-04-02 21:31:49,697 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2023-04-02 21:31:49,697 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2023-04-02 21:31:49,697 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-02 21:31:49,697 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2023-04-02 21:31:49,698 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2023-04-02 21:31:49,698 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2023-04-02 21:31:49,698 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2023-04-02 21:31:49,698 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2023-04-02 21:31:49,698 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2023-04-02 21:31:49,698 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2023-04-02 21:31:49,698 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2023-04-02 21:31:49,698 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2023-04-02 21:31:49,698 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2023-04-02 21:31:49,698 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2023-04-02 21:31:49,699 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2023-04-02 21:31:49,699 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2023-04-02 21:31:49,699 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2023-04-02 21:31:49,699 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2023-04-02 21:31:49,700 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2023-04-02 21:31:49,700 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2023-04-02 21:31:49,700 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2023-04-02 21:31:49,700 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2023-04-02 21:31:49,700 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2023-04-02 21:31:49,701 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2023-04-02 21:31:49,701 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2023-04-02 21:31:49,701 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2023-04-02 21:31:49,701 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2023-04-02 21:31:49,701 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2023-04-02 21:31:49,701 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2023-04-02 21:31:49,701 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2023-04-02 21:31:49,702 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2023-04-02 21:31:49,702 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2023-04-02 21:31:49,702 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2023-04-02 21:31:49,702 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2023-04-02 21:31:49,702 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2023-04-02 21:31:49,702 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2023-04-02 21:31:49,702 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2023-04-02 21:31:49,702 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2023-04-02 21:31:49,702 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2023-04-02 21:31:49,702 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2023-04-02 21:31:49,702 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2023-04-02 21:31:49,703 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2023-04-02 21:31:49,704 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2023-04-02 21:31:49,704 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2023-04-02 21:31:49,704 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2023-04-02 21:31:49,704 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2023-04-02 21:31:49,704 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-04-02 21:31:49,704 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-02 21:31:49,704 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2023-04-02 21:31:49,704 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert
[2023-04-02 21:31:49,704 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-02 21:31:49,708 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-02 21:31:49,713 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-02 21:31:49,713 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-04-02 21:31:49,713 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2023-04-02 21:31:49,714 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-02 21:31:49,714 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2023-04-02 21:31:49,717 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-02 21:31:49,717 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-02 21:31:49,720 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-02 21:31:49,720 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-02 21:31:49,720 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-02 21:31:49,925 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-02 21:31:49,952 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-02 21:31:50,149 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-02 21:31:50,180 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-02 21:31:50,180 INFO  L302             CfgBuilder]: Removed 9 assume(true) statements.
[2023-04-02 21:31:50,182 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:31:50 BoogieIcfgContainer
[2023-04-02 21:31:50,182 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-02 21:31:50,184 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-02 21:31:50,184 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-02 21:31:50,187 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-02 21:31:50,188 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:31:49" (1/3) ...
[2023-04-02 21:31:50,188 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b484b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:31:50, skipping insertion in model container
[2023-04-02 21:31:50,188 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:31:49" (2/3) ...
[2023-04-02 21:31:50,189 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b484b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:31:50, skipping insertion in model container
[2023-04-02 21:31:50,189 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:31:50" (3/3) ...
[2023-04-02 21:31:50,194 INFO  L112   eAbstractionObserver]: Analyzing ICFG dll-circular-1.i
[2023-04-02 21:31:50,210 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-02 21:31:50,210 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations.
[2023-04-02 21:31:50,254 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-02 21:31:50,260 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;@5117a3eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-02 21:31:50,260 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2023-04-02 21:31:50,264 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 35 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 30 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-04-02 21:31:50,270 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2023-04-02 21:31:50,270 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 21:31:50,271 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-02 21:31:50,271 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 21:31:50,276 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 21:31:50,276 INFO  L85        PathProgramCache]: Analyzing trace with hash -130707835, now seen corresponding path program 1 times
[2023-04-02 21:31:50,285 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 21:31:50,285 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002147431]
[2023-04-02 21:31:50,285 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 21:31:50,286 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 21:31:50,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 21:31:50,480 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-02 21:31:50,481 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 21:31:50,481 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002147431]
[2023-04-02 21:31:50,482 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002147431] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 21:31:50,482 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 21:31:50,483 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-04-02 21:31:50,484 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515021240]
[2023-04-02 21:31:50,485 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 21:31:50,489 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-04-02 21:31:50,490 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 21:31:50,536 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-04-02 21:31:50,537 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-04-02 21:31:50,539 INFO  L87              Difference]: Start difference. First operand  has 35 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 30 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-02 21:31:50,569 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 21:31:50,570 INFO  L93              Difference]: Finished difference Result 65 states and 99 transitions.
[2023-04-02 21:31:50,571 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-04-02 21:31:50,572 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9
[2023-04-02 21:31:50,572 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 21:31:50,578 INFO  L225             Difference]: With dead ends: 65
[2023-04-02 21:31:50,579 INFO  L226             Difference]: Without dead ends: 28
[2023-04-02 21:31:50,581 INFO  L412           NwaCegarLoop]: 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
[2023-04-02 21:31:50,584 INFO  L413           NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-04-02 21:31:50,585 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-04-02 21:31:50,599 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2023-04-02 21:31:50,610 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2023-04-02 21:31:50,611 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 24 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-02 21:31:50,614 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions.
[2023-04-02 21:31:50,616 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9
[2023-04-02 21:31:50,617 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 21:31:50,618 INFO  L495      AbstractCegarLoop]: Abstraction has 28 states and 32 transitions.
[2023-04-02 21:31:50,618 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-02 21:31:50,619 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions.
[2023-04-02 21:31:50,620 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2023-04-02 21:31:50,620 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 21:31:50,620 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-02 21:31:50,620 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-02 21:31:50,620 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 21:31:50,621 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 21:31:50,621 INFO  L85        PathProgramCache]: Analyzing trace with hash 202056055, now seen corresponding path program 1 times
[2023-04-02 21:31:50,622 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 21:31:50,623 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397749139]
[2023-04-02 21:31:50,623 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 21:31:50,623 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 21:31:50,667 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 21:31:50,994 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-02 21:31:50,994 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 21:31:50,994 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397749139]
[2023-04-02 21:31:50,995 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397749139] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 21:31:50,995 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 21:31:50,995 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-04-02 21:31:50,996 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074801004]
[2023-04-02 21:31:50,996 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 21:31:50,997 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-04-02 21:31:51,000 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 21:31:51,001 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-04-02 21:31:51,002 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-04-02 21:31:51,002 INFO  L87              Difference]: Start difference. First operand 28 states and 32 transitions. Second operand  has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-02 21:31:51,064 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 21:31:51,064 INFO  L93              Difference]: Finished difference Result 43 states and 48 transitions.
[2023-04-02 21:31:51,064 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-04-02 21:31:51,065 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10
[2023-04-02 21:31:51,065 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 21:31:51,066 INFO  L225             Difference]: With dead ends: 43
[2023-04-02 21:31:51,066 INFO  L226             Difference]: Without dead ends: 39
[2023-04-02 21:31:51,066 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-04-02 21:31:51,069 INFO  L413           NwaCegarLoop]: 21 mSDtfsCounter, 20 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-04-02 21:31:51,070 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 46 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-04-02 21:31:51,072 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2023-04-02 21:31:51,080 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30.
[2023-04-02 21:31:51,081 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-02 21:31:51,082 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions.
[2023-04-02 21:31:51,082 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 10
[2023-04-02 21:31:51,083 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 21:31:51,083 INFO  L495      AbstractCegarLoop]: Abstraction has 30 states and 35 transitions.
[2023-04-02 21:31:51,083 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-02 21:31:51,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions.
[2023-04-02 21:31:51,084 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2023-04-02 21:31:51,085 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 21:31:51,085 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-02 21:31:51,085 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-02 21:31:51,085 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 21:31:51,087 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 21:31:51,087 INFO  L85        PathProgramCache]: Analyzing trace with hash -1412533624, now seen corresponding path program 1 times
[2023-04-02 21:31:51,087 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 21:31:51,087 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097759132]
[2023-04-02 21:31:51,087 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 21:31:51,087 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 21:31:51,136 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-02 21:31:51,194 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-02 21:31:51,197 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-02 21:31:51,198 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097759132]
[2023-04-02 21:31:51,198 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097759132] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-02 21:31:51,199 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-02 21:31:51,199 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-04-02 21:31:51,200 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692636361]
[2023-04-02 21:31:51,200 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-02 21:31:51,201 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-04-02 21:31:51,201 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-02 21:31:51,201 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-04-02 21:31:51,204 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-02 21:31:51,204 INFO  L87              Difference]: Start difference. First operand 30 states and 35 transitions. Second operand  has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-02 21:31:51,243 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-02 21:31:51,244 INFO  L93              Difference]: Finished difference Result 71 states and 83 transitions.
[2023-04-02 21:31:51,244 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-04-02 21:31:51,244 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13
[2023-04-02 21:31:51,245 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-02 21:31:51,246 INFO  L225             Difference]: With dead ends: 71
[2023-04-02 21:31:51,246 INFO  L226             Difference]: Without dead ends: 50
[2023-04-02 21:31:51,247 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-04-02 21:31:51,248 INFO  L413           NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-04-02 21:31:51,248 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 46 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-04-02 21:31:51,249 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2023-04-02 21:31:51,256 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37.
[2023-04-02 21:31:51,256 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-02 21:31:51,258 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions.
[2023-04-02 21:31:51,258 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 13
[2023-04-02 21:31:51,258 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-02 21:31:51,258 INFO  L495      AbstractCegarLoop]: Abstraction has 37 states and 44 transitions.
[2023-04-02 21:31:51,258 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-02 21:31:51,259 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions.
[2023-04-02 21:31:51,259 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2023-04-02 21:31:51,259 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-02 21:31:51,259 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-02 21:31:51,259 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-02 21:31:51,260 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-02 21:31:51,260 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-02 21:31:51,260 INFO  L85        PathProgramCache]: Analyzing trace with hash -1040469136, now seen corresponding path program 1 times
[2023-04-02 21:31:51,260 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-02 21:31:51,261 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347383370]
[2023-04-02 21:31:51,261 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-02 21:31:51,261 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-02 21:31:51,292 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-04-02 21:31:51,293 INFO  L356             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-04-02 21:31:51,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-04-02 21:31:51,350 INFO  L130   FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace
[2023-04-02 21:31:51,350 INFO  L360         BasicCegarLoop]: Counterexample is feasible
[2023-04-02 21:31:51,351 INFO  L805   garLoopResultBuilder]: Registering result UNSAFE for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining)
[2023-04-02 21:31:51,353 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining)
[2023-04-02 21:31:51,353 INFO  L805   garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining)
[2023-04-02 21:31:51,354 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-02 21:31:51,356 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2023-04-02 21:31:51,361 INFO  L178   ceAbstractionStarter]: Computing trace abstraction results
[2023-04-02 21:31:51,385 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 09:31:51 BoogieIcfgContainer
[2023-04-02 21:31:51,386 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-04-02 21:31:51,386 INFO  L158              Benchmark]: Toolchain (without parser) took 2205.35ms. Allocated memory was 190.8MB in the beginning and 278.9MB in the end (delta: 88.1MB). Free memory was 133.9MB in the beginning and 155.3MB in the end (delta: -21.4MB). Peak memory consumption was 67.4MB. Max. memory is 8.0GB.
[2023-04-02 21:31:51,386 INFO  L158              Benchmark]: CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-04-02 21:31:51,387 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 355.35ms. Allocated memory is still 190.8MB. Free memory was 133.6MB in the beginning and 116.3MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB.
[2023-04-02 21:31:51,387 INFO  L158              Benchmark]: Boogie Preprocessor took 61.02ms. Allocated memory is still 190.8MB. Free memory was 116.3MB in the beginning and 113.4MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB.
[2023-04-02 21:31:51,387 INFO  L158              Benchmark]: RCFGBuilder took 581.07ms. Allocated memory was 190.8MB in the beginning and 278.9MB in the end (delta: 88.1MB). Free memory was 113.4MB in the beginning and 230.8MB in the end (delta: -117.4MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB.
[2023-04-02 21:31:51,388 INFO  L158              Benchmark]: TraceAbstraction took 1201.55ms. Allocated memory is still 278.9MB. Free memory was 230.3MB in the beginning and 155.3MB in the end (delta: 75.0MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB.
[2023-04-02 21:31:51,389 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 355.35ms. Allocated memory is still 190.8MB. Free memory was 133.6MB in the beginning and 116.3MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 61.02ms. Allocated memory is still 190.8MB. Free memory was 116.3MB in the beginning and 113.4MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB.
 * RCFGBuilder took 581.07ms. Allocated memory was 190.8MB in the beginning and 278.9MB in the end (delta: 88.1MB). Free memory was 113.4MB in the beginning and 230.8MB in the end (delta: -117.4MB). Peak memory consumption was 10.8MB. Max. memory is 8.0GB.
 * TraceAbstraction took 1201.55ms. Allocated memory is still 278.9MB. Free memory was 230.3MB in the beginning and 155.3MB in the end (delta: 75.0MB). Peak memory consumption was 74.4MB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - CounterExampleResult [Line: 1034]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L997]               SLL* head = malloc(sizeof(SLL));
[L998]               head->next = head
[L999]               head->data = 0
[L1001]              SLL* x = head;
[L1002]              int state = 1;
         VAL         [head={-1:0}, state=1, x={-1:0}]
[L1005]  COND FALSE  !(__VERIFIER_nondet_int())
[L1027]              x->data = state
[L1029]  EXPR        head->next
[L1029]              x = head->next
[L1030]  COND FALSE  !(!(((void*)0) != x))
         VAL         [head={-1:0}, state=1, x={-1:0}]
[L1032]  EXPR        x->data
         VAL         [head={-1:0}, state=1, x->data=1, x={-1:0}]
[L1032]  COND TRUE   x->data != 0
[L1034]  EXPR        x->next
[L1034]  EXPR        x->next->data
[L1034]  EXPR        x->next->data != 0 && x->data > x->next->data
[L1034]  EXPR        x->data
[L1034]  EXPR        x->next
[L1034]  EXPR        x->next->data
[L1034]  EXPR        x->next->data != 0 && x->data > x->next->data
         VAL         [head={-1:0}, state=1, x->data=1, x->next->data != 0 && x->data > x->next->data=0, x->next->data=1, x->next->data=1, x->next={-1:0}, x->next={-1:0}, x={-1:0}]
[L1034]  COND TRUE   !(x->next->data != 0 && x->data > x->next->data)
[L1034]              reach_error()
         VAL         [head={-1:0}, state=1, x={-1:0}]

  - UnprovableResult [Line: 1025]: Unable to prove that call to reach_error is unreachable
    Unable to prove that call to reach_error is unreachable
 Reason: Not analyzed. 
  - UnprovableResult [Line: 1030]: Unable to prove that call to reach_error is unreachable
    Unable to prove that call to reach_error is unreachable
 Reason: Not analyzed. 
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 37 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 83 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=3, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2023-04-02 21:31:51,407 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...