/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_NONE.epf -i ../../../trunk/examples/svcomp/array-examples/standard_copy9_ground-1.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 21:07:04,671 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 21:07:04,682 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 21:07:04,728 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 21:07:04,728 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 21:07:04,731 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 21:07:04,735 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 21:07:04,739 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 21:07:04,741 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 21:07:04,741 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-10 21:07:04,742 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-10 21:07:04,743 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 21:07:04,743 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 21:07:04,744 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 21:07:04,745 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 21:07:04,746 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 21:07:04,746 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 21:07:04,747 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 21:07:04,748 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 21:07:04,749 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 21:07:04,750 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 21:07:04,756 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 21:07:04,757 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 21:07:04,759 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 21:07:04,769 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 21:07:04,770 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 21:07:04,770 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 21:07:04,771 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 21:07:04,771 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 21:07:04,772 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 21:07:04,772 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 21:07:04,773 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 21:07:04,773 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 21:07:04,774 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 21:07:04,774 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 21:07:04,775 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 21:07:04,775 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 21:07:04,775 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 21:07:04,776 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 21:07:04,776 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 21:07:04,777 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 21:07:04,780 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf
[2022-01-10 21:07:04,811 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 21:07:04,813 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 21:07:04,814 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 21:07:04,814 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 21:07:04,815 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 21:07:04,815 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 21:07:04,815 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 21:07:04,815 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 21:07:04,815 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 21:07:04,816 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 21:07:04,816 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 21:07:04,816 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 21:07:04,817 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 21:07:04,817 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 21:07:04,817 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 21:07:04,817 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 21:07:04,817 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 21:07:04,817 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 21:07:04,817 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 21:07:04,817 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 21:07:04,818 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 21:07:04,819 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 21:07:04,819 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 21:07:04,819 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 21:07:04,819 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 21:07:04,819 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 21:07:04,819 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 21:07:04,819 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 21:07:04,820 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 21:07:04,820 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 21:07:04,820 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 21:07:04,820 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 21:07:04,822 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 21:07:04,822 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_NONE
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 21:07:05,053 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 21:07:05,069 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 21:07:05,071 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 21:07:05,072 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 21:07:05,075 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 21:07:05,075 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy9_ground-1.i
[2022-01-10 21:07:05,132 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0be52dd/e50ac3f437ec4dcca6d2b38e18d98245/FLAG177e62ef4
[2022-01-10 21:07:05,524 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 21:07:05,524 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy9_ground-1.i
[2022-01-10 21:07:05,531 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0be52dd/e50ac3f437ec4dcca6d2b38e18d98245/FLAG177e62ef4
[2022-01-10 21:07:05,541 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0be52dd/e50ac3f437ec4dcca6d2b38e18d98245
[2022-01-10 21:07:05,543 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 21:07:05,544 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 21:07:05,545 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 21:07:05,546 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 21:07:05,549 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 21:07:05,549 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:07:05" (1/1) ...
[2022-01-10 21:07:05,550 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26cb08d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:07:05, skipping insertion in model container
[2022-01-10 21:07:05,550 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:07:05" (1/1) ...
[2022-01-10 21:07:05,556 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 21:07:05,569 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 21:07:05,723 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy9_ground-1.i[816,829]
[2022-01-10 21:07:05,746 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 21:07:05,754 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 21:07:05,764 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy9_ground-1.i[816,829]
[2022-01-10 21:07:05,780 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 21:07:05,795 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 21:07:05,796 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:07:05 WrapperNode
[2022-01-10 21:07:05,796 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 21:07:05,796 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 21:07:05,797 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 21:07:05,797 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 21:07:05,802 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:07:05" (1/1) ...
[2022-01-10 21:07:05,810 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:07:05" (1/1) ...
[2022-01-10 21:07:05,831 INFO  L137                Inliner]: procedures = 18, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 193
[2022-01-10 21:07:05,831 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 21:07:05,832 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 21:07:05,832 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 21:07:05,832 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 21:07:05,839 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:07:05" (1/1) ...
[2022-01-10 21:07:05,839 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:07:05" (1/1) ...
[2022-01-10 21:07:05,843 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:07:05" (1/1) ...
[2022-01-10 21:07:05,843 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:07:05" (1/1) ...
[2022-01-10 21:07:05,852 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:07:05" (1/1) ...
[2022-01-10 21:07:05,858 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:07:05" (1/1) ...
[2022-01-10 21:07:05,860 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:07:05" (1/1) ...
[2022-01-10 21:07:05,862 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 21:07:05,863 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 21:07:05,863 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 21:07:05,863 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 21:07:05,867 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:07:05" (1/1) ...
[2022-01-10 21:07:05,872 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 21:07:05,881 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:07:05,893 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 21:07:05,896 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 21:07:05,931 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 21:07:05,931 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 21:07:05,932 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-10 21:07:05,932 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-01-10 21:07:05,932 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 21:07:05,932 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 21:07:05,932 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-10 21:07:05,932 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2022-01-10 21:07:05,990 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 21:07:05,992 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 21:07:06,356 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 21:07:06,362 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 21:07:06,362 INFO  L299             CfgBuilder]: Removed 11 assume(true) statements.
[2022-01-10 21:07:06,364 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:07:06 BoogieIcfgContainer
[2022-01-10 21:07:06,364 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 21:07:06,365 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 21:07:06,365 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 21:07:06,366 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 21:07:06,368 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:07:06" (1/1) ...
[2022-01-10 21:07:06,520 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:07:06 BasicIcfg
[2022-01-10 21:07:06,520 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 21:07:06,521 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 21:07:06,522 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 21:07:06,524 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 21:07:06,524 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:07:05" (1/4) ...
[2022-01-10 21:07:06,525 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aaf440e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:07:06, skipping insertion in model container
[2022-01-10 21:07:06,525 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:07:05" (2/4) ...
[2022-01-10 21:07:06,525 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aaf440e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:07:06, skipping insertion in model container
[2022-01-10 21:07:06,525 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:07:06" (3/4) ...
[2022-01-10 21:07:06,526 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aaf440e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:07:06, skipping insertion in model container
[2022-01-10 21:07:06,526 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:07:06" (4/4) ...
[2022-01-10 21:07:06,536 INFO  L111   eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-1.iTransformedIcfg
[2022-01-10 21:07:06,541 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 21:07:06,541 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 21:07:06,601 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 21:07:06,610 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 21:07:06,610 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 21:07:06,626 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 42 states, 40 states have (on average 1.6) internal successors, (64), 41 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:07:06,631 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-01-10 21:07:06,631 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:07:06,632 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:07:06,633 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:07:06,638 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:07:06,639 INFO  L85        PathProgramCache]: Analyzing trace with hash 767431332, now seen corresponding path program 1 times
[2022-01-10 21:07:06,646 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:07:06,647 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970683955]
[2022-01-10 21:07:06,648 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:07:06,648 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:07:06,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:07:06,867 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 21:07:06,868 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:07:06,868 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970683955]
[2022-01-10 21:07:06,868 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970683955] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 21:07:06,869 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 21:07:06,869 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 21:07:06,870 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926573340]
[2022-01-10 21:07:06,872 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 21:07:06,876 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 21:07:06,876 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:07:06,904 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 21:07:06,905 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 21:07:06,906 INFO  L87              Difference]: Start difference. First operand  has 42 states, 40 states have (on average 1.6) internal successors, (64), 41 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 21:07:06,921 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:07:06,921 INFO  L93              Difference]: Finished difference Result 80 states and 122 transitions.
[2022-01-10 21:07:06,922 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 21:07:06,924 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 25
[2022-01-10 21:07:06,924 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:07:06,930 INFO  L225             Difference]: With dead ends: 80
[2022-01-10 21:07:06,930 INFO  L226             Difference]: Without dead ends: 38
[2022-01-10 21:07:06,933 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 21:07:06,937 INFO  L933         BasicCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 21:07:06,938 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 21:07:06,950 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2022-01-10 21:07:06,971 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38.
[2022-01-10 21:07:06,973 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 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 21:07:06,975 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions.
[2022-01-10 21:07:06,976 INFO  L78                 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 25
[2022-01-10 21:07:06,977 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:07:06,977 INFO  L470      AbstractCegarLoop]: Abstraction has 38 states and 48 transitions.
[2022-01-10 21:07:06,978 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 21:07:06,979 INFO  L276                IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions.
[2022-01-10 21:07:06,981 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2022-01-10 21:07:06,981 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:07:06,981 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:07:06,981 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 21:07:06,982 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:07:06,984 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:07:06,984 INFO  L85        PathProgramCache]: Analyzing trace with hash -1256958099, now seen corresponding path program 1 times
[2022-01-10 21:07:06,985 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:07:06,985 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610968972]
[2022-01-10 21:07:06,986 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:07:06,986 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:07:07,158 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:07:07,277 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 21:07:07,278 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:07:07,278 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610968972]
[2022-01-10 21:07:07,278 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610968972] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 21:07:07,278 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 21:07:07,278 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 21:07:07,279 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245473773]
[2022-01-10 21:07:07,279 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 21:07:07,281 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 21:07:07,281 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:07:07,281 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 21:07:07,281 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 21:07:07,282 INFO  L87              Difference]: Start difference. First operand 38 states and 48 transitions. Second operand  has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 21:07:07,318 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:07:07,319 INFO  L93              Difference]: Finished difference Result 74 states and 94 transitions.
[2022-01-10 21:07:07,321 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 21:07:07,321 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25
[2022-01-10 21:07:07,321 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:07:07,322 INFO  L225             Difference]: With dead ends: 74
[2022-01-10 21:07:07,322 INFO  L226             Difference]: Without dead ends: 40
[2022-01-10 21:07:07,325 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 21:07:07,326 INFO  L933         BasicCegarLoop]: 46 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 21:07:07,327 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 90 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 21:07:07,330 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2022-01-10 21:07:07,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39.
[2022-01-10 21:07:07,338 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 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 21:07:07,339 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions.
[2022-01-10 21:07:07,339 INFO  L78                 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 25
[2022-01-10 21:07:07,339 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:07:07,339 INFO  L470      AbstractCegarLoop]: Abstraction has 39 states and 49 transitions.
[2022-01-10 21:07:07,340 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 21:07:07,340 INFO  L276                IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions.
[2022-01-10 21:07:07,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2022-01-10 21:07:07,340 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:07:07,341 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:07:07,341 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 21:07:07,341 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:07:07,341 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:07:07,342 INFO  L85        PathProgramCache]: Analyzing trace with hash -321605653, now seen corresponding path program 1 times
[2022-01-10 21:07:07,342 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:07:07,342 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150099138]
[2022-01-10 21:07:07,342 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:07:07,342 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:07:07,466 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:07:07,535 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-10 21:07:07,535 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:07:07,535 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150099138]
[2022-01-10 21:07:07,536 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150099138] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 21:07:07,536 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 21:07:07,536 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 21:07:07,536 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562609573]
[2022-01-10 21:07:07,536 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 21:07:07,537 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 21:07:07,537 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:07:07,538 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 21:07:07,538 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 21:07:07,538 INFO  L87              Difference]: Start difference. First operand 39 states and 49 transitions. Second operand  has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 21:07:07,704 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:07:07,705 INFO  L93              Difference]: Finished difference Result 88 states and 115 transitions.
[2022-01-10 21:07:07,706 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 21:07:07,707 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27
[2022-01-10 21:07:07,707 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:07:07,707 INFO  L225             Difference]: With dead ends: 88
[2022-01-10 21:07:07,708 INFO  L226             Difference]: Without dead ends: 57
[2022-01-10 21:07:07,708 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 21:07:07,709 INFO  L933         BasicCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 21:07:07,709 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 41 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 21:07:07,710 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2022-01-10 21:07:07,717 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48.
[2022-01-10 21:07:07,718 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 48 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 47 states have internal predecessors, (58), 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 21:07:07,718 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions.
[2022-01-10 21:07:07,718 INFO  L78                 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 27
[2022-01-10 21:07:07,719 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:07:07,719 INFO  L470      AbstractCegarLoop]: Abstraction has 48 states and 58 transitions.
[2022-01-10 21:07:07,719 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 21:07:07,719 INFO  L276                IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions.
[2022-01-10 21:07:07,720 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2022-01-10 21:07:07,720 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:07:07,720 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:07:07,720 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-10 21:07:07,720 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:07:07,721 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:07:07,721 INFO  L85        PathProgramCache]: Analyzing trace with hash 1270917817, now seen corresponding path program 1 times
[2022-01-10 21:07:07,721 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:07:07,721 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955911140]
[2022-01-10 21:07:07,721 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:07:07,721 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:07:07,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:07:07,966 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-01-10 21:07:07,966 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:07:07,966 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955911140]
[2022-01-10 21:07:07,966 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955911140] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 21:07:07,967 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957812916]
[2022-01-10 21:07:07,967 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:07:07,967 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:07:07,967 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:07:07,972 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 21:07:08,005 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 21:07:08,236 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:07:08,240 INFO  L263         TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-01-10 21:07:08,245 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:07:08,500 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-01-10 21:07:08,500 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 21:07:08,611 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-01-10 21:07:08,611 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957812916] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 21:07:08,612 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 21:07:08,612 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-01-10 21:07:08,612 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760592857]
[2022-01-10 21:07:08,612 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 21:07:08,614 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-10 21:07:08,614 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:07:08,614 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-10 21:07:08,615 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-10 21:07:08,615 INFO  L87              Difference]: Start difference. First operand 48 states and 58 transitions. Second operand  has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:07:08,710 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:07:08,710 INFO  L93              Difference]: Finished difference Result 97 states and 119 transitions.
[2022-01-10 21:07:08,713 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 21:07:08,713 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45
[2022-01-10 21:07:08,713 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:07:08,714 INFO  L225             Difference]: With dead ends: 97
[2022-01-10 21:07:08,714 INFO  L226             Difference]: Without dead ends: 54
[2022-01-10 21:07:08,714 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2022-01-10 21:07:08,715 INFO  L933         BasicCegarLoop]: 46 mSDtfsCounter, 5 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 21:07:08,715 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 178 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 21:07:08,716 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2022-01-10 21:07:08,720 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54.
[2022-01-10 21:07:08,720 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 54 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:07:08,721 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions.
[2022-01-10 21:07:08,721 INFO  L78                 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 45
[2022-01-10 21:07:08,721 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:07:08,721 INFO  L470      AbstractCegarLoop]: Abstraction has 54 states and 64 transitions.
[2022-01-10 21:07:08,721 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:07:08,721 INFO  L276                IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions.
[2022-01-10 21:07:08,722 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2022-01-10 21:07:08,722 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:07:08,722 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:07:08,751 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 21:07:08,947 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 21:07:08,948 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:07:08,948 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:07:08,949 INFO  L85        PathProgramCache]: Analyzing trace with hash 100916403, now seen corresponding path program 2 times
[2022-01-10 21:07:08,949 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:07:08,949 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678311131]
[2022-01-10 21:07:08,949 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:07:08,949 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:07:09,059 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:07:09,118 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-01-10 21:07:09,119 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:07:09,119 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678311131]
[2022-01-10 21:07:09,119 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678311131] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 21:07:09,119 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450887018]
[2022-01-10 21:07:09,119 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 21:07:09,119 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:07:09,120 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:07:09,121 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 21:07:09,122 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 21:07:09,777 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 21:07:09,778 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 21:07:09,782 INFO  L263         TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 21:07:09,787 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:07:09,932 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2022-01-10 21:07:09,937 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 21:07:10,048 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-01-10 21:07:10,048 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [450887018] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 21:07:10,048 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 21:07:10,049 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9
[2022-01-10 21:07:10,049 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905382771]
[2022-01-10 21:07:10,049 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 21:07:10,050 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-01-10 21:07:10,050 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:07:10,051 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-01-10 21:07:10,051 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2022-01-10 21:07:10,051 INFO  L87              Difference]: Start difference. First operand 54 states and 64 transitions. Second operand  has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 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 21:07:10,862 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:07:10,862 INFO  L93              Difference]: Finished difference Result 147 states and 192 transitions.
[2022-01-10 21:07:10,863 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-01-10 21:07:10,863 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 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 51
[2022-01-10 21:07:10,863 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:07:10,864 INFO  L225             Difference]: With dead ends: 147
[2022-01-10 21:07:10,864 INFO  L226             Difference]: Without dead ends: 108
[2022-01-10 21:07:10,865 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2022-01-10 21:07:10,865 INFO  L933         BasicCegarLoop]: 28 mSDtfsCounter, 77 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-10 21:07:10,866 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 107 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2022-01-10 21:07:10,866 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2022-01-10 21:07:10,877 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108.
[2022-01-10 21:07:10,877 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 108 states, 107 states have (on average 1.102803738317757) internal successors, (118), 107 states have internal predecessors, (118), 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 21:07:10,878 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions.
[2022-01-10 21:07:10,878 INFO  L78                 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 51
[2022-01-10 21:07:10,879 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:07:10,879 INFO  L470      AbstractCegarLoop]: Abstraction has 108 states and 118 transitions.
[2022-01-10 21:07:10,879 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 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 21:07:10,879 INFO  L276                IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions.
[2022-01-10 21:07:10,881 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2022-01-10 21:07:10,881 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:07:10,881 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:07:10,908 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-10 21:07:11,097 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:07:11,097 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:07:11,098 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:07:11,098 INFO  L85        PathProgramCache]: Analyzing trace with hash 382746781, now seen corresponding path program 3 times
[2022-01-10 21:07:11,098 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:07:11,098 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660401226]
[2022-01-10 21:07:11,098 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:07:11,098 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:07:11,679 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:07:11,783 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked.
[2022-01-10 21:07:11,783 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:07:11,783 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660401226]
[2022-01-10 21:07:11,783 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660401226] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 21:07:11,783 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663014752]
[2022-01-10 21:07:11,784 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-10 21:07:11,784 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:07:11,784 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:07:11,788 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 21:07:11,813 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-10 21:08:05,369 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2022-01-10 21:08:05,370 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 21:08:05,428 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 75 conjunts are in the unsatisfiable core
[2022-01-10 21:08:05,433 INFO  L286         TraceCheckSpWp]: Computing forward predicates...