/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/combinations/gcd_2+newton_2_6.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 07:54:31,095 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 07:54:31,097 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 07:54:31,149 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 07:54:31,150 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 07:54:31,151 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 07:54:31,152 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 07:54:31,175 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 07:54:31,176 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 07:54:31,177 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 07:54:31,177 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 07:54:31,178 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 07:54:31,179 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 07:54:31,180 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 07:54:31,180 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 07:54:31,182 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 07:54:31,183 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 07:54:31,185 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 07:54:31,186 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 07:54:31,187 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 07:54:31,187 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 07:54:31,189 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2022-01-10 07:54:31,190 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 07:54:31,191 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 07:54:31,191 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 07:54:31,192 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 07:54:31,192 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 07:54:31,193 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 07:54:31,193 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 07:54:31,194 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 07:54:31,195 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 07:54:31,195 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 07:54:31,195 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 07:54:31,196 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 07:54:31,196 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 07:54:31,197 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 07:54:31,198 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2022-01-10 07:54:31,215 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 07:54:31,216 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 07:54:31,216 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 07:54:31,216 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 07:54:31,217 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 07:54:31,217 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 07:54:31,218 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 07:54:31,218 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 07:54:31,218 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 07:54:31,218 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 07:54:31,219 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 07:54:31,219 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 07:54:31,219 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 07:54:31,219 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 07:54:31,220 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 07:54:31,220 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 07:54:31,220 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 07:54:31,220 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 07:54:31,221 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 07:54:31,221 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 07:54:31,221 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 07:54:31,221 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 07:54:31,221 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 07:54:31,222 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 07:54:31,222 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 07:54:31,222 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 07:54:31,222 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 07:54:31,222 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 07:54:31,223 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 07:54:31,223 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 07:54:31,223 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 07:54:31,223 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 07:54:31,223 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 07:54:31,224 INFO  L138        SettingsManager]:  * Logic for external solver=AUFBV
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 07:54:31,454 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 07:54:31,473 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 07:54:31,475 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 07:54:31,476 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 07:54:31,476 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 07:54:31,477 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/gcd_2+newton_2_6.i
[2022-01-10 07:54:31,533 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c386be32/8c14cf0d488d4a59b02bfd6226ef33a2/FLAG9b305de17
[2022-01-10 07:54:31,940 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 07:54:31,941 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_2+newton_2_6.i
[2022-01-10 07:54:31,947 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c386be32/8c14cf0d488d4a59b02bfd6226ef33a2/FLAG9b305de17
[2022-01-10 07:54:32,370 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c386be32/8c14cf0d488d4a59b02bfd6226ef33a2
[2022-01-10 07:54:32,372 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 07:54:32,373 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 07:54:32,375 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 07:54:32,375 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 07:54:32,378 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 07:54:32,378 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:54:32" (1/1) ...
[2022-01-10 07:54:32,379 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ee480c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:32, skipping insertion in model container
[2022-01-10 07:54:32,379 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:54:32" (1/1) ...
[2022-01-10 07:54:32,385 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 07:54:32,399 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 07:54:32,535 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_2_6.i[1226,1239]
[2022-01-10 07:54:32,554 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_2_6.i[2841,2854]
[2022-01-10 07:54:32,557 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 07:54:32,567 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 07:54:32,576 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_2_6.i[1226,1239]
[2022-01-10 07:54:32,585 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_2_6.i[2841,2854]
[2022-01-10 07:54:32,586 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 07:54:32,597 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 07:54:32,598 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:32 WrapperNode
[2022-01-10 07:54:32,598 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 07:54:32,599 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 07:54:32,599 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 07:54:32,599 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 07:54:32,607 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:32" (1/1) ...
[2022-01-10 07:54:32,615 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:32" (1/1) ...
[2022-01-10 07:54:32,633 INFO  L137                Inliner]: procedures = 28, calls = 16, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 72
[2022-01-10 07:54:32,634 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 07:54:32,634 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 07:54:32,634 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 07:54:32,634 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 07:54:32,641 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:32" (1/1) ...
[2022-01-10 07:54:32,642 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:32" (1/1) ...
[2022-01-10 07:54:32,645 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:32" (1/1) ...
[2022-01-10 07:54:32,646 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:32" (1/1) ...
[2022-01-10 07:54:32,651 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:32" (1/1) ...
[2022-01-10 07:54:32,655 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:32" (1/1) ...
[2022-01-10 07:54:32,657 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:32" (1/1) ...
[2022-01-10 07:54:32,659 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 07:54:32,660 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 07:54:32,660 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 07:54:32,660 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 07:54:32,671 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:32" (1/1) ...
[2022-01-10 07:54:32,677 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 07:54:32,691 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 07:54:32,724 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 07:54:32,739 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 07:54:32,767 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 07:54:32,767 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 07:54:32,767 INFO  L130     BoogieDeclarations]: Found specification of procedure fp
[2022-01-10 07:54:32,768 INFO  L138     BoogieDeclarations]: Found implementation of procedure fp
[2022-01-10 07:54:32,768 INFO  L130     BoogieDeclarations]: Found specification of procedure f
[2022-01-10 07:54:32,769 INFO  L138     BoogieDeclarations]: Found implementation of procedure f
[2022-01-10 07:54:32,769 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 07:54:32,770 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 07:54:32,838 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 07:54:32,839 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 07:54:32,983 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 07:54:32,988 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 07:54:32,988 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 07:54:32,990 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:54:32 BoogieIcfgContainer
[2022-01-10 07:54:32,990 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 07:54:32,991 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 07:54:32,991 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 07:54:32,994 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 07:54:32,994 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:54:32" (1/3) ...
[2022-01-10 07:54:32,995 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72990f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:54:32, skipping insertion in model container
[2022-01-10 07:54:32,995 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:32" (2/3) ...
[2022-01-10 07:54:32,995 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72990f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:54:32, skipping insertion in model container
[2022-01-10 07:54:32,996 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:54:32" (3/3) ...
[2022-01-10 07:54:32,997 INFO  L111   eAbstractionObserver]: Analyzing ICFG gcd_2+newton_2_6.i
[2022-01-10 07:54:33,001 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 07:54:33,002 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2022-01-10 07:54:33,059 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 07:54:33,065 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 07:54:33,065 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2022-01-10 07:54:33,101 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-10 07:54:33,105 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 07:54:33,106 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 07:54:33,106 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 07:54:33,119 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 07:54:33,124 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 07:54:33,124 INFO  L85        PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times
[2022-01-10 07:54:33,134 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 07:54:33,134 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677904908]
[2022-01-10 07:54:33,135 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 07:54:33,141 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 07:54:33,141 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 07:54:33,147 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 07:54:33,195 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2022-01-10 07:54:33,241 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 07:54:33,246 INFO  L263         TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-01-10 07:54:33,250 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 07:54:33,375 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 07:54:33,376 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 07:54:33,376 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 07:54:33,376 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677904908]
[2022-01-10 07:54:33,377 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [677904908] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 07:54:33,377 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 07:54:33,377 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 07:54:33,378 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432505851]
[2022-01-10 07:54:33,379 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 07:54:33,382 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 07:54:33,382 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 07:54:33,408 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 07:54:33,409 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 07:54:33,411 INFO  L87              Difference]: Start difference. First operand  has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 07:54:33,431 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 07:54:33,431 INFO  L93              Difference]: Finished difference Result 68 states and 84 transitions.
[2022-01-10 07:54:33,432 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 07:54:33,433 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 07:54:33,433 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 07:54:33,438 INFO  L225             Difference]: With dead ends: 68
[2022-01-10 07:54:33,438 INFO  L226             Difference]: Without dead ends: 30
[2022-01-10 07:54:33,441 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 07:54:33,443 INFO  L933         BasicCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 07:54:33,444 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time]
[2022-01-10 07:54:33,457 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2022-01-10 07:54:33,477 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2022-01-10 07:54:33,478 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-10 07:54:33,481 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions.
[2022-01-10 07:54:33,482 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11
[2022-01-10 07:54:33,482 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 07:54:33,482 INFO  L470      AbstractCegarLoop]: Abstraction has 30 states and 34 transitions.
[2022-01-10 07:54:33,483 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 07:54:33,483 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions.
[2022-01-10 07:54:33,485 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 07:54:33,485 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 07:54:33,485 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 07:54:33,494 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0
[2022-01-10 07:54:33,694 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 07:54:33,694 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 07:54:33,695 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 07:54:33,695 INFO  L85        PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times
[2022-01-10 07:54:33,696 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 07:54:33,698 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905076998]
[2022-01-10 07:54:33,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 07:54:33,698 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 07:54:33,699 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 07:54:33,700 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 07:54:33,702 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2022-01-10 07:54:33,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 07:54:33,741 INFO  L263         TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-01-10 07:54:33,742 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 07:54:33,818 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 07:54:33,819 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 07:54:33,819 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 07:54:33,819 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905076998]
[2022-01-10 07:54:33,819 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [905076998] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 07:54:33,819 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 07:54:33,819 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 07:54:33,820 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215142374]
[2022-01-10 07:54:33,820 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 07:54:33,821 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 07:54:33,821 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 07:54:33,822 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 07:54:33,822 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 07:54:33,822 INFO  L87              Difference]: Start difference. First operand 30 states and 34 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 07:54:33,892 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 07:54:33,893 INFO  L93              Difference]: Finished difference Result 37 states and 41 transitions.
[2022-01-10 07:54:33,893 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 07:54:33,893 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 07:54:33,894 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 07:54:33,894 INFO  L225             Difference]: With dead ends: 37
[2022-01-10 07:54:33,894 INFO  L226             Difference]: Without dead ends: 31
[2022-01-10 07:54:33,895 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-10 07:54:33,896 INFO  L933         BasicCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 07:54:33,897 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 84 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 07:54:33,897 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2022-01-10 07:54:33,900 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30.
[2022-01-10 07:54:33,901 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-10 07:54:33,902 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions.
[2022-01-10 07:54:33,902 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 11
[2022-01-10 07:54:33,902 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 07:54:33,902 INFO  L470      AbstractCegarLoop]: Abstraction has 30 states and 34 transitions.
[2022-01-10 07:54:33,903 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 07:54:33,903 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions.
[2022-01-10 07:54:33,903 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-10 07:54:33,903 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 07:54:33,904 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 07:54:33,914 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2022-01-10 07:54:34,111 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 07:54:34,112 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 07:54:34,112 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 07:54:34,112 INFO  L85        PathProgramCache]: Analyzing trace with hash 149955676, now seen corresponding path program 1 times
[2022-01-10 07:54:34,113 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 07:54:34,113 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063002802]
[2022-01-10 07:54:34,113 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 07:54:34,113 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 07:54:34,114 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 07:54:34,117 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 07:54:34,117 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2022-01-10 07:54:34,209 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 07:54:34,212 INFO  L263         TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-01-10 07:54:34,213 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 07:54:34,280 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 07:54:34,280 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 07:54:34,281 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 07:54:34,281 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063002802]
[2022-01-10 07:54:34,281 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063002802] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 07:54:34,281 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 07:54:34,281 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 07:54:34,281 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230093177]
[2022-01-10 07:54:34,281 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 07:54:34,282 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 07:54:34,282 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 07:54:34,282 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 07:54:34,283 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 07:54:34,283 INFO  L87              Difference]: Start difference. First operand 30 states and 34 transitions. Second operand  has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 07:54:34,328 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 07:54:34,329 INFO  L93              Difference]: Finished difference Result 38 states and 42 transitions.
[2022-01-10 07:54:34,329 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 07:54:34,329 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 07:54:34,329 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 07:54:34,332 INFO  L225             Difference]: With dead ends: 38
[2022-01-10 07:54:34,332 INFO  L226             Difference]: Without dead ends: 30
[2022-01-10 07:54:34,332 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 07:54:34,333 INFO  L933         BasicCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 07:54:34,334 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 84 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 07:54:34,334 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2022-01-10 07:54:34,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2022-01-10 07:54:34,337 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-10 07:54:34,338 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions.
[2022-01-10 07:54:34,338 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12
[2022-01-10 07:54:34,338 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 07:54:34,338 INFO  L470      AbstractCegarLoop]: Abstraction has 30 states and 33 transitions.
[2022-01-10 07:54:34,338 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 07:54:34,339 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions.
[2022-01-10 07:54:34,339 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-10 07:54:34,339 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 07:54:34,339 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 07:54:34,351 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2022-01-10 07:54:34,540 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 07:54:34,540 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 07:54:34,541 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 07:54:34,541 INFO  L85        PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times
[2022-01-10 07:54:34,541 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 07:54:34,541 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958306277]
[2022-01-10 07:54:34,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 07:54:34,542 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 07:54:34,542 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 07:54:34,543 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 07:54:34,544 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2022-01-10 07:54:34,584 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 07:54:34,587 INFO  L263         TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 07:54:34,588 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 07:54:34,731 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 07:54:34,731 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 07:54:34,903 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 07:54:34,903 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 07:54:34,903 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958306277]
[2022-01-10 07:54:34,904 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958306277] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 07:54:34,904 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 07:54:34,904 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2022-01-10 07:54:34,904 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361996439]
[2022-01-10 07:54:34,904 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 07:54:34,905 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-01-10 07:54:34,905 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 07:54:34,905 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-01-10 07:54:34,906 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182
[2022-01-10 07:54:34,906 INFO  L87              Difference]: Start difference. First operand 30 states and 33 transitions. Second operand  has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 07:54:35,778 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 07:54:35,778 INFO  L93              Difference]: Finished difference Result 47 states and 52 transitions.
[2022-01-10 07:54:35,779 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2022-01-10 07:54:35,779 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12
[2022-01-10 07:54:35,779 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 07:54:35,780 INFO  L225             Difference]: With dead ends: 47
[2022-01-10 07:54:35,780 INFO  L226             Difference]: Without dead ends: 33
[2022-01-10 07:54:35,782 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600
[2022-01-10 07:54:35,783 INFO  L933         BasicCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-01-10 07:54:35,784 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 174 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-01-10 07:54:35,784 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2022-01-10 07:54:35,787 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2022-01-10 07:54:35,788 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-01-10 07:54:35,788 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions.
[2022-01-10 07:54:35,788 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 12
[2022-01-10 07:54:35,789 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 07:54:35,789 INFO  L470      AbstractCegarLoop]: Abstraction has 33 states and 36 transitions.
[2022-01-10 07:54:35,789 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 07:54:35,789 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions.
[2022-01-10 07:54:35,790 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-10 07:54:35,790 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 07:54:35,790 INFO  L514         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 07:54:35,799 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0
[2022-01-10 07:54:35,999 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2022-01-10 07:54:36,000 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 07:54:36,000 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 07:54:36,000 INFO  L85        PathProgramCache]: Analyzing trace with hash -2084161321, now seen corresponding path program 2 times
[2022-01-10 07:54:36,001 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 07:54:36,001 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293883867]
[2022-01-10 07:54:36,001 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 07:54:36,001 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 07:54:36,002 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 07:54:36,002 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2022-01-10 07:54:36,003 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2022-01-10 07:54:38,199 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 07:54:38,199 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 07:54:38,212 WARN  L261         TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-01-10 07:54:38,214 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 07:55:33,492 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 07:55:33,493 INFO  L328         TraceCheckSpWp]: Computing backward predicates...