/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/combinations/gcd_2+newton_3_1.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 19:38:41,716 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 19:38:41,718 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 19:38:41,783 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 19:38:41,783 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 19:38:41,785 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 19:38:41,788 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 19:38:41,796 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 19:38:41,798 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 19:38:41,799 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 19:38:41,801 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 19:38:41,801 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 19:38:41,802 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 19:38:41,803 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 19:38:41,806 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 19:38:41,806 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 19:38:41,808 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 19:38:41,809 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 19:38:41,809 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 19:38:41,813 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 19:38:41,814 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 19:38:41,814 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 19:38:41,815 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 19:38:41,815 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 19:38:41,815 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 19:38:41,816 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 19:38:41,816 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 19:38:41,817 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 19:38:41,818 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 19:38:41,818 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 19:38:41,819 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 19:38:41,819 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 19:38:41,819 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 19:38:41,819 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 19:38:41,820 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 19:38:41,821 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf
[2022-01-10 19:38:41,845 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 19:38:41,846 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 19:38:41,846 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 19:38:41,846 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 19:38:41,847 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 19:38:41,847 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 19:38:41,847 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 19:38:41,847 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 19:38:41,847 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 19:38:41,848 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 19:38:41,848 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 19:38:41,848 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 19:38:41,848 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 19:38:41,848 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 19:38:41,849 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 19:38:41,849 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 19:38:41,849 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 19:38:41,849 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 19:38:41,849 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 19:38:41,849 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 19:38:41,849 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 19:38:41,850 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 19:38:41,850 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 19:38:41,850 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 19:38:41,850 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 19:38:41,850 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 19:38:41,850 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 19:38:41,850 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 19:38:41,851 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 19:38:41,851 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 19:38:41,851 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 19:38:41,851 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 19:38:41,851 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 19:38:41,852 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_LAZY
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 19:38:42,030 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 19:38:42,043 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 19:38:42,045 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 19:38:42,046 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 19:38:42,046 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 19:38:42,047 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/gcd_2+newton_3_1.i
[2022-01-10 19:38:42,085 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cc9d25db/7a01c0395b504932b18ca4c2b1f996af/FLAG28e658796
[2022-01-10 19:38:42,461 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 19:38:42,461 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_2+newton_3_1.i
[2022-01-10 19:38:42,473 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cc9d25db/7a01c0395b504932b18ca4c2b1f996af/FLAG28e658796
[2022-01-10 19:38:42,485 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cc9d25db/7a01c0395b504932b18ca4c2b1f996af
[2022-01-10 19:38:42,487 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 19:38:42,489 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 19:38:42,491 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 19:38:42,491 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 19:38:42,494 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 19:38:42,495 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:38:42" (1/1) ...
[2022-01-10 19:38:42,495 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae3b0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:42, skipping insertion in model container
[2022-01-10 19:38:42,495 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:38:42" (1/1) ...
[2022-01-10 19:38:42,500 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 19:38:42,515 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 19:38:42,680 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_2+newton_3_1.i[1226,1239]
[2022-01-10 19:38:42,716 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_2+newton_3_1.i[2862,2875]
[2022-01-10 19:38:42,721 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 19:38:42,731 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 19:38:42,746 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_2+newton_3_1.i[1226,1239]
[2022-01-10 19:38:42,767 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_2+newton_3_1.i[2862,2875]
[2022-01-10 19:38:42,768 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 19:38:42,786 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 19:38:42,787 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:42 WrapperNode
[2022-01-10 19:38:42,787 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 19:38:42,788 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 19:38:42,788 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 19:38:42,788 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 19:38:42,793 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:42" (1/1) ...
[2022-01-10 19:38:42,808 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:42" (1/1) ...
[2022-01-10 19:38:42,833 INFO  L137                Inliner]: procedures = 28, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 95
[2022-01-10 19:38:42,833 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 19:38:42,834 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 19:38:42,834 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 19:38:42,834 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 19:38:42,840 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:42" (1/1) ...
[2022-01-10 19:38:42,840 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:42" (1/1) ...
[2022-01-10 19:38:42,848 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:42" (1/1) ...
[2022-01-10 19:38:42,848 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:42" (1/1) ...
[2022-01-10 19:38:42,858 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:42" (1/1) ...
[2022-01-10 19:38:42,865 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:42" (1/1) ...
[2022-01-10 19:38:42,870 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:42" (1/1) ...
[2022-01-10 19:38:42,872 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 19:38:42,873 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 19:38:42,873 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 19:38:42,873 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 19:38:42,878 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:42" (1/1) ...
[2022-01-10 19:38:42,884 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 19:38:42,892 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 19:38:42,902 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 19:38:42,919 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 19:38:42,946 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 19:38:42,947 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 19:38:42,947 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 19:38:42,947 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 19:38:42,997 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 19:38:42,998 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 19:38:43,193 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 19:38:43,197 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 19:38:43,197 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 19:38:43,199 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:38:43 BoogieIcfgContainer
[2022-01-10 19:38:43,199 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 19:38:43,199 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 19:38:43,199 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 19:38:43,200 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 19:38:43,203 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:38:43" (1/1) ...
[2022-01-10 19:38:43,304 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:38:43 BasicIcfg
[2022-01-10 19:38:43,304 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 19:38:43,305 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 19:38:43,305 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 19:38:43,307 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 19:38:43,307 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:38:42" (1/4) ...
[2022-01-10 19:38:43,308 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686a5476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:38:43, skipping insertion in model container
[2022-01-10 19:38:43,308 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:38:42" (2/4) ...
[2022-01-10 19:38:43,308 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686a5476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:38:43, skipping insertion in model container
[2022-01-10 19:38:43,308 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:38:43" (3/4) ...
[2022-01-10 19:38:43,308 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686a5476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 07:38:43, skipping insertion in model container
[2022-01-10 19:38:43,308 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 07:38:43" (4/4) ...
[2022-01-10 19:38:43,309 INFO  L111   eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_1.iTransformedIcfg
[2022-01-10 19:38:43,313 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 19:38:43,313 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2022-01-10 19:38:43,357 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 19:38:43,363 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 19:38:43,363 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2022-01-10 19:38:43,374 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 31 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 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 19:38:43,377 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 19:38:43,378 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 19:38:43,378 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 19:38:43,378 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 19:38:43,382 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 19:38:43,382 INFO  L85        PathProgramCache]: Analyzing trace with hash -1763821818, now seen corresponding path program 1 times
[2022-01-10 19:38:43,388 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 19:38:43,388 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082982313]
[2022-01-10 19:38:43,388 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 19:38:43,389 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 19:38:43,495 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 19:38:43,551 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 19:38:43,552 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 19:38:43,552 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082982313]
[2022-01-10 19:38:43,554 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082982313] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 19:38:43,554 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 19:38:43,554 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 19:38:43,555 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087646451]
[2022-01-10 19:38:43,556 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 19:38:43,558 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 19:38:43,559 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 19:38:43,575 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 19:38:43,576 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 19:38:43,578 INFO  L87              Difference]: Start difference. First operand  has 31 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 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 5.5) internal successors, (11), 2 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 19:38:43,591 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 19:38:43,591 INFO  L93              Difference]: Finished difference Result 55 states and 65 transitions.
[2022-01-10 19:38:43,593 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 19:38:43,594 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 19:38:43,594 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 19:38:43,599 INFO  L225             Difference]: With dead ends: 55
[2022-01-10 19:38:43,599 INFO  L226             Difference]: Without dead ends: 23
[2022-01-10 19:38:43,602 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 19:38:43,606 INFO  L933         BasicCegarLoop]: 35 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, 35 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 19:38:43,607 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 19:38:43,618 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2022-01-10 19:38:43,627 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2022-01-10 19:38:43,628 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 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 19:38:43,628 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions.
[2022-01-10 19:38:43,630 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 11
[2022-01-10 19:38:43,630 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 19:38:43,630 INFO  L470      AbstractCegarLoop]: Abstraction has 23 states and 25 transitions.
[2022-01-10 19:38:43,631 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 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 19:38:43,632 INFO  L276                IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions.
[2022-01-10 19:38:43,632 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 19:38:43,633 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 19:38:43,633 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 19:38:43,633 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 19:38:43,633 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 19:38:43,635 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 19:38:43,635 INFO  L85        PathProgramCache]: Analyzing trace with hash -1735192667, now seen corresponding path program 1 times
[2022-01-10 19:38:43,635 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 19:38:43,635 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005428026]
[2022-01-10 19:38:43,635 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 19:38:43,636 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 19:38:43,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 19:38:44,086 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 19:38:44,087 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 19:38:44,087 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005428026]
[2022-01-10 19:38:44,088 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005428026] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 19:38:44,088 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 19:38:44,088 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-10 19:38:44,088 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190950004]
[2022-01-10 19:38:44,089 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 19:38:44,090 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-10 19:38:44,090 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 19:38:44,091 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-10 19:38:44,094 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2022-01-10 19:38:44,095 INFO  L87              Difference]: Start difference. First operand 23 states and 25 transitions. Second operand  has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 19:38:46,136 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 19:38:46,435 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 19:38:46,435 INFO  L93              Difference]: Finished difference Result 30 states and 32 transitions.
[2022-01-10 19:38:46,439 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 19:38:46,439 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 19:38:46,439 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 19:38:46,440 INFO  L225             Difference]: With dead ends: 30
[2022-01-10 19:38:46,440 INFO  L226             Difference]: Without dead ends: 24
[2022-01-10 19:38:46,440 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2022-01-10 19:38:46,441 INFO  L933         BasicCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time
[2022-01-10 19:38:46,441 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 94 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time]
[2022-01-10 19:38:46,442 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2022-01-10 19:38:46,444 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2022-01-10 19:38:46,444 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 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 19:38:46,444 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions.
[2022-01-10 19:38:46,445 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 11
[2022-01-10 19:38:46,445 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 19:38:46,445 INFO  L470      AbstractCegarLoop]: Abstraction has 24 states and 26 transitions.
[2022-01-10 19:38:46,445 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 19:38:46,445 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions.
[2022-01-10 19:38:46,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 19:38:46,446 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 19:38:46,446 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 19:38:46,446 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 19:38:46,446 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 19:38:46,446 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 19:38:46,446 INFO  L85        PathProgramCache]: Analyzing trace with hash 1672270948, now seen corresponding path program 1 times
[2022-01-10 19:38:46,447 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 19:38:46,447 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165038615]
[2022-01-10 19:38:46,447 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 19:38:46,447 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 19:38:46,497 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 19:38:46,667 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 19:38:46,668 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 19:38:46,668 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165038615]
[2022-01-10 19:38:46,668 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165038615] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 19:38:46,668 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 19:38:46,668 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 19:38:46,668 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237632236]
[2022-01-10 19:38:46,668 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 19:38:46,669 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 19:38:46,669 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 19:38:46,669 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 19:38:46,669 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 19:38:46,670 INFO  L87              Difference]: Start difference. First operand 24 states and 26 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 19:38:48,687 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 19:38:49,370 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 19:38:49,370 INFO  L93              Difference]: Finished difference Result 31 states and 33 transitions.
[2022-01-10 19:38:49,371 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-10 19:38:49,371 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 19:38:49,371 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 19:38:49,371 INFO  L225             Difference]: With dead ends: 31
[2022-01-10 19:38:49,371 INFO  L226             Difference]: Without dead ends: 24
[2022-01-10 19:38:49,372 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 19:38:49,372 INFO  L933         BasicCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time
[2022-01-10 19:38:49,373 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 55 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time]
[2022-01-10 19:38:49,373 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2022-01-10 19:38:49,375 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2022-01-10 19:38:49,375 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 24 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 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 19:38:49,376 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2022-01-10 19:38:49,376 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11
[2022-01-10 19:38:49,376 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 19:38:49,376 INFO  L470      AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2022-01-10 19:38:49,376 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 19:38:49,376 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2022-01-10 19:38:49,376 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-10 19:38:49,376 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 19:38:49,376 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 19:38:49,377 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-10 19:38:49,377 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 19:38:49,377 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 19:38:49,377 INFO  L85        PathProgramCache]: Analyzing trace with hash -1451658415, now seen corresponding path program 1 times
[2022-01-10 19:38:49,377 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 19:38:49,377 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401614483]
[2022-01-10 19:38:49,377 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 19:38:49,378 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 19:38:49,392 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 19:38:49,393 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959031347]
[2022-01-10 19:38:49,393 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 19:38:49,393 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 19:38:49,393 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 19:38:49,394 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 19:38:49,396 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 19:38:49,473 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 19:38:49,475 INFO  L263         TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-01-10 19:38:49,481 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 19:38:49,555 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 19:38:49,556 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 19:38:49,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 19:38:49,887 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 19:38:49,887 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401614483]
[2022-01-10 19:38:49,887 WARN  L312   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-10 19:38:49,887 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959031347]
[2022-01-10 19:38:49,887 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959031347] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 19:38:49,887 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 19:38:49,888 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2022-01-10 19:38:49,888 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021229528]
[2022-01-10 19:38:49,888 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 19:38:49,888 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-01-10 19:38:49,888 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 19:38:49,889 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-01-10 19:38:49,889 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2022-01-10 19:38:49,889 INFO  L87              Difference]: Start difference. First operand 24 states and 25 transitions. Second operand  has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 19:38:51,908 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 19:38:54,243 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 19:38:56,567 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-01-10 19:38:57,172 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 19:38:57,172 INFO  L93              Difference]: Finished difference Result 31 states and 32 transitions.
[2022-01-10 19:38:57,173 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-01-10 19:38:57,173 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 12
[2022-01-10 19:38:57,173 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 19:38:57,173 INFO  L225             Difference]: With dead ends: 31
[2022-01-10 19:38:57,173 INFO  L226             Difference]: Without dead ends: 25
[2022-01-10 19:38:57,174 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182
[2022-01-10 19:38:57,174 INFO  L933         BasicCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time
[2022-01-10 19:38:57,175 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 173 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 3 Unknown, 0 Unchecked, 7.2s Time]
[2022-01-10 19:38:57,175 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2022-01-10 19:38:57,177 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2022-01-10 19:38:57,177 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 25 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 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 19:38:57,177 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions.
[2022-01-10 19:38:57,177 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 12
[2022-01-10 19:38:57,178 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 19:38:57,178 INFO  L470      AbstractCegarLoop]: Abstraction has 25 states and 26 transitions.
[2022-01-10 19:38:57,178 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 19:38:57,178 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions.
[2022-01-10 19:38:57,178 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-10 19:38:57,178 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 19:38:57,178 INFO  L514         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 19:38:57,198 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 19:38:57,387 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 19:38:57,388 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 19:38:57,388 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 19:38:57,388 INFO  L85        PathProgramCache]: Analyzing trace with hash -1252031195, now seen corresponding path program 2 times
[2022-01-10 19:38:57,388 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 19:38:57,388 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087937111]
[2022-01-10 19:38:57,389 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 19:38:57,389 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 19:38:57,399 ERROR L247   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-10 19:38:57,400 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665079699]
[2022-01-10 19:38:57,400 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 19:38:57,400 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 19:38:57,400 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 19:38:57,407 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 19:38:57,409 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 19:38:57,652 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 19:38:57,653 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 19:38:57,656 INFO  L263         TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 24 conjunts are in the unsatisfiable core
[2022-01-10 19:38:57,659 INFO  L286         TraceCheckSpWp]: Computing forward predicates...