/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/iftelse.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 08:40:05,991 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 08:40:05,992 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 08:40:06,017 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 08:40:06,017 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 08:40:06,018 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 08:40:06,019 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 08:40:06,021 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 08:40:06,021 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 08:40:06,022 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 08:40:06,023 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 08:40:06,040 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 08:40:06,041 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 08:40:06,041 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 08:40:06,042 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 08:40:06,043 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 08:40:06,044 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 08:40:06,045 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 08:40:06,045 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 08:40:06,046 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 08:40:06,047 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 08:40:06,047 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 08:40:06,049 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 08:40:06,049 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 08:40:06,049 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 08:40:06,049 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 08:40:06,050 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 08:40:06,050 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 08:40:06,050 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 08:40:06,051 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 08:40:06,051 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 08:40:06,052 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 08:40:06,052 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 08:40:06,052 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 08:40:06,053 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 08:40:06,053 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 08:40:06,053 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 08:40:06,054 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 08:40:06,055 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf
[2022-01-10 08:40:06,086 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 08:40:06,087 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 08:40:06,087 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 08:40:06,087 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 08:40:06,088 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 08:40:06,088 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 08:40:06,088 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 08:40:06,089 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 08:40:06,089 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 08:40:06,089 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 08:40:06,089 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 08:40:06,090 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 08:40:06,090 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 08:40:06,090 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 08:40:06,090 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 08:40:06,090 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 08:40:06,090 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 08:40:06,090 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 08:40:06,090 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 08:40:06,090 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 08:40:06,090 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 08:40:06,091 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 08:40:06,091 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 08:40:06,091 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 08:40:06,091 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 08:40:06,091 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 08:40:06,092 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 08:40:06,092 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 08:40:06,092 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 08:40:06,092 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 08:40:06,092 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 08:40:06,092 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 08:40:06,093 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 08:40:06,093 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_BITWISE
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 08:40:06,292 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 08:40:06,304 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 08:40:06,306 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 08:40:06,306 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 08:40:06,309 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 08:40:06,310 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/iftelse.c
[2022-01-10 08:40:06,360 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0d99cee/0d1909380df0417889f32b81fdfea852/FLAG40fadb092
[2022-01-10 08:40:06,741 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 08:40:06,742 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/iftelse.c
[2022-01-10 08:40:06,749 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0d99cee/0d1909380df0417889f32b81fdfea852/FLAG40fadb092
[2022-01-10 08:40:06,760 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff0d99cee/0d1909380df0417889f32b81fdfea852
[2022-01-10 08:40:06,763 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 08:40:06,765 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 08:40:06,766 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 08:40:06,766 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 08:40:06,768 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 08:40:06,769 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:40:06" (1/1) ...
[2022-01-10 08:40:06,769 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7056e710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:40:06, skipping insertion in model container
[2022-01-10 08:40:06,769 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:40:06" (1/1) ...
[2022-01-10 08:40:06,773 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 08:40:06,785 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 08:40:06,935 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/iftelse.c[406,419]
[2022-01-10 08:40:06,946 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 08:40:06,955 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 08:40:06,967 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/iftelse.c[406,419]
[2022-01-10 08:40:06,973 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 08:40:06,983 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 08:40:06,984 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:40:06 WrapperNode
[2022-01-10 08:40:06,984 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 08:40:06,986 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 08:40:06,986 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 08:40:06,986 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 08:40:06,991 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:40:06" (1/1) ...
[2022-01-10 08:40:06,997 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:40:06" (1/1) ...
[2022-01-10 08:40:07,008 INFO  L137                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41
[2022-01-10 08:40:07,009 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 08:40:07,009 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 08:40:07,009 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 08:40:07,009 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 08:40:07,014 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:40:06" (1/1) ...
[2022-01-10 08:40:07,015 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:40:06" (1/1) ...
[2022-01-10 08:40:07,027 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:40:06" (1/1) ...
[2022-01-10 08:40:07,027 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:40:06" (1/1) ...
[2022-01-10 08:40:07,036 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:40:06" (1/1) ...
[2022-01-10 08:40:07,042 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:40:06" (1/1) ...
[2022-01-10 08:40:07,043 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:40:06" (1/1) ...
[2022-01-10 08:40:07,044 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 08:40:07,044 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 08:40:07,044 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 08:40:07,044 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 08:40:07,045 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:40:06" (1/1) ...
[2022-01-10 08:40:07,050 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 08:40:07,058 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 08:40:07,085 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-10 08:40:07,111 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-10 08:40:07,118 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 08:40:07,118 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 08:40:07,118 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 08:40:07,119 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 08:40:07,161 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 08:40:07,162 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 08:40:07,254 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 08:40:07,268 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 08:40:07,268 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 08:40:07,269 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:40:07 BoogieIcfgContainer
[2022-01-10 08:40:07,269 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 08:40:07,270 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 08:40:07,270 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 08:40:07,274 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 08:40:07,276 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:40:07" (1/1) ...
[2022-01-10 08:40:07,311 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:40:07 BasicIcfg
[2022-01-10 08:40:07,311 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 08:40:07,312 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 08:40:07,312 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 08:40:07,314 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 08:40:07,314 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:40:06" (1/4) ...
[2022-01-10 08:40:07,315 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7921e67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:40:07, skipping insertion in model container
[2022-01-10 08:40:07,315 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:40:06" (2/4) ...
[2022-01-10 08:40:07,315 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7921e67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:40:07, skipping insertion in model container
[2022-01-10 08:40:07,315 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:40:07" (3/4) ...
[2022-01-10 08:40:07,315 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7921e67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:40:07, skipping insertion in model container
[2022-01-10 08:40:07,315 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:40:07" (4/4) ...
[2022-01-10 08:40:07,316 INFO  L111   eAbstractionObserver]: Analyzing ICFG iftelse.cTransformedIcfg
[2022-01-10 08:40:07,319 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 08:40:07,319 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 08:40:07,348 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 08:40:07,352 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-01-10 08:40:07,352 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 08:40:07,360 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 08:40:07,362 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-01-10 08:40:07,362 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 08:40:07,363 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 08:40:07,363 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 08:40:07,366 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 08:40:07,366 INFO  L85        PathProgramCache]: Analyzing trace with hash -366159190, now seen corresponding path program 1 times
[2022-01-10 08:40:07,371 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 08:40:07,372 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285665051]
[2022-01-10 08:40:07,372 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 08:40:07,372 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 08:40:07,471 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 08:40:07,627 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 08:40:07,628 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 08:40:07,628 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285665051]
[2022-01-10 08:40:07,628 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285665051] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 08:40:07,629 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 08:40:07,629 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-10 08:40:07,630 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102200034]
[2022-01-10 08:40:07,630 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 08:40:07,633 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-10 08:40:07,633 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 08:40:07,663 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-10 08:40:07,665 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-01-10 08:40:07,667 INFO  L87              Difference]: Start difference. First operand  has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 08:40:07,840 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 08:40:07,840 INFO  L93              Difference]: Finished difference Result 66 states and 88 transitions.
[2022-01-10 08:40:07,843 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-01-10 08:40:07,844 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2022-01-10 08:40:07,844 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 08:40:07,852 INFO  L225             Difference]: With dead ends: 66
[2022-01-10 08:40:07,852 INFO  L226             Difference]: Without dead ends: 27
[2022-01-10 08:40:07,855 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2022-01-10 08:40:07,859 INFO  L933         BasicCegarLoop]: 29 mSDtfsCounter, 47 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 08:40:07,859 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 99 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 08:40:07,871 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2022-01-10 08:40:07,879 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 14.
[2022-01-10 08:40:07,880 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 08:40:07,881 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions.
[2022-01-10 08:40:07,881 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8
[2022-01-10 08:40:07,881 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 08:40:07,882 INFO  L470      AbstractCegarLoop]: Abstraction has 14 states and 18 transitions.
[2022-01-10 08:40:07,882 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 08:40:07,882 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions.
[2022-01-10 08:40:07,882 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-01-10 08:40:07,882 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 08:40:07,882 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 08:40:07,883 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 08:40:07,883 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 08:40:07,883 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 08:40:07,884 INFO  L85        PathProgramCache]: Analyzing trace with hash -366129399, now seen corresponding path program 1 times
[2022-01-10 08:40:07,884 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 08:40:07,884 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531563021]
[2022-01-10 08:40:07,884 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 08:40:07,884 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 08:40:07,900 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 08:40:07,933 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 08:40:07,934 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 08:40:07,934 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531563021]
[2022-01-10 08:40:07,934 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531563021] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 08:40:07,934 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 08:40:07,935 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 08:40:07,935 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746712945]
[2022-01-10 08:40:07,935 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 08:40:07,936 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 08:40:07,937 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 08:40:07,937 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 08:40:07,938 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 08:40:07,938 INFO  L87              Difference]: Start difference. First operand 14 states and 18 transitions. Second operand  has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 08:40:07,966 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 08:40:07,966 INFO  L93              Difference]: Finished difference Result 27 states and 34 transitions.
[2022-01-10 08:40:07,967 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 08:40:07,967 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2022-01-10 08:40:07,967 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 08:40:07,968 INFO  L225             Difference]: With dead ends: 27
[2022-01-10 08:40:07,968 INFO  L226             Difference]: Without dead ends: 20
[2022-01-10 08:40:07,972 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 08:40:07,974 INFO  L933         BasicCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 08:40:07,974 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 08:40:07,977 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-01-10 08:40:07,981 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14.
[2022-01-10 08:40:07,982 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 08:40:07,983 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions.
[2022-01-10 08:40:07,983 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8
[2022-01-10 08:40:07,984 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 08:40:07,984 INFO  L470      AbstractCegarLoop]: Abstraction has 14 states and 17 transitions.
[2022-01-10 08:40:07,984 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 08:40:07,985 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions.
[2022-01-10 08:40:07,985 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 08:40:07,986 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 08:40:07,986 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 08:40:07,988 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 08:40:07,989 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 08:40:07,993 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 08:40:07,994 INFO  L85        PathProgramCache]: Analyzing trace with hash 990546961, now seen corresponding path program 1 times
[2022-01-10 08:40:07,994 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 08:40:07,994 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268569164]
[2022-01-10 08:40:07,994 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 08:40:07,994 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 08:40:08,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 08:40:08,046 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 08:40:08,047 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 08:40:08,047 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268569164]
[2022-01-10 08:40:08,047 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268569164] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 08:40:08,047 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 08:40:08,047 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 08:40:08,047 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781645046]
[2022-01-10 08:40:08,047 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 08:40:08,048 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 08:40:08,048 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 08:40:08,048 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 08:40:08,048 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 08:40:08,048 INFO  L87              Difference]: Start difference. First operand 14 states and 17 transitions. Second operand  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 08:40:08,067 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 08:40:08,067 INFO  L93              Difference]: Finished difference Result 21 states and 26 transitions.
[2022-01-10 08:40:08,068 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 08:40:08,068 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11
[2022-01-10 08:40:08,069 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 08:40:08,069 INFO  L225             Difference]: With dead ends: 21
[2022-01-10 08:40:08,069 INFO  L226             Difference]: Without dead ends: 14
[2022-01-10 08:40:08,069 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 08:40:08,070 INFO  L933         BasicCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 08:40:08,070 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 9 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 08:40:08,071 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2022-01-10 08:40:08,073 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2022-01-10 08:40:08,073 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 08:40:08,073 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions.
[2022-01-10 08:40:08,073 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11
[2022-01-10 08:40:08,073 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 08:40:08,073 INFO  L470      AbstractCegarLoop]: Abstraction has 14 states and 15 transitions.
[2022-01-10 08:40:08,074 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 08:40:08,074 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions.
[2022-01-10 08:40:08,074 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 08:40:08,074 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 08:40:08,074 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 08:40:08,074 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-10 08:40:08,074 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 08:40:08,075 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 08:40:08,075 INFO  L85        PathProgramCache]: Analyzing trace with hash -280563825, now seen corresponding path program 1 times
[2022-01-10 08:40:08,075 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 08:40:08,075 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396918634]
[2022-01-10 08:40:08,075 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 08:40:08,075 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 08:40:08,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 08:40:08,166 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 08:40:08,167 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 08:40:08,167 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396918634]
[2022-01-10 08:40:08,167 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396918634] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 08:40:08,167 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686206306]
[2022-01-10 08:40:08,167 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 08:40:08,167 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 08:40:08,167 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 08:40:08,169 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 08:40:08,170 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-10 08:40:08,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 08:40:08,220 INFO  L263         TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core
[2022-01-10 08:40:08,225 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 08:40:18,907 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 08:40:18,907 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 08:40:19,098 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 08:40:19,098 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [686206306] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 08:40:19,098 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 08:40:19,098 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 16
[2022-01-10 08:40:19,099 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861467442]
[2022-01-10 08:40:19,099 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 08:40:19,099 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-01-10 08:40:19,099 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 08:40:19,099 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-01-10 08:40:19,100 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240
[2022-01-10 08:40:19,100 INFO  L87              Difference]: Start difference. First operand 14 states and 15 transitions. Second operand  has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 08:40:19,441 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 08:40:19,441 INFO  L93              Difference]: Finished difference Result 31 states and 35 transitions.
[2022-01-10 08:40:19,441 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-01-10 08:40:19,441 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2022-01-10 08:40:19,441 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 08:40:19,442 INFO  L225             Difference]: With dead ends: 31
[2022-01-10 08:40:19,442 INFO  L226             Difference]: Without dead ends: 24
[2022-01-10 08:40:19,442 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380
[2022-01-10 08:40:19,443 INFO  L933         BasicCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 08:40:19,443 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 72 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 64 Invalid, 0 Unknown, 3 Unchecked, 0.1s Time]
[2022-01-10 08:40:19,443 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2022-01-10 08:40:19,446 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19.
[2022-01-10 08:40:19,446 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 08:40:19,446 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions.
[2022-01-10 08:40:19,446 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13
[2022-01-10 08:40:19,446 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 08:40:19,446 INFO  L470      AbstractCegarLoop]: Abstraction has 19 states and 21 transitions.
[2022-01-10 08:40:19,447 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 08:40:19,447 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions.
[2022-01-10 08:40:19,447 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 08:40:19,447 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 08:40:19,447 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 08:40:19,467 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-10 08:40:19,659 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 08:40:19,660 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 08:40:19,660 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 08:40:19,660 INFO  L85        PathProgramCache]: Analyzing trace with hash -280534034, now seen corresponding path program 1 times
[2022-01-10 08:40:19,660 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 08:40:19,660 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397914228]
[2022-01-10 08:40:19,660 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 08:40:19,661 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 08:40:19,684 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 08:40:19,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 08:40:19,866 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 08:40:19,866 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397914228]
[2022-01-10 08:40:19,866 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397914228] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 08:40:19,866 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880953285]
[2022-01-10 08:40:19,866 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 08:40:19,867 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 08:40:19,867 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 08:40:19,868 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 08:40:19,869 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-10 08:40:19,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 08:40:19,905 INFO  L263         TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 16 conjunts are in the unsatisfiable core
[2022-01-10 08:40:19,907 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 08:40:26,615 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 08:40:26,615 INFO  L328         TraceCheckSpWp]: Computing backward predicates...