/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_3_4.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 07:54:37,525 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 07:54:37,526 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 07:54:37,583 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 07:54:37,583 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 07:54:37,584 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 07:54:37,585 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 07:54:37,587 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 07:54:37,588 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 07:54:37,589 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 07:54:37,590 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 07:54:37,591 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 07:54:37,591 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 07:54:37,592 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 07:54:37,593 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 07:54:37,594 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 07:54:37,595 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 07:54:37,596 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 07:54:37,598 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 07:54:37,599 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 07:54:37,600 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 07:54:37,601 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 07:54:37,602 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 07:54:37,604 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 07:54:37,605 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 07:54:37,605 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 07:54:37,606 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 07:54:37,606 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 07:54:37,607 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 07:54:37,607 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 07:54:37,608 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 07:54:37,608 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 07:54:37,609 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 07:54:37,610 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 07:54:37,610 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 07:54:37,611 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 07:54:37,611 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 07:54:37,611 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 07:54:37,612 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 07:54:37,613 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 07:54:37,635 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 07:54:37,636 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 07:54:37,636 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 07:54:37,636 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 07:54:37,637 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-01-10 07:54:37,637 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-01-10 07:54:37,637 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 07:54:37,638 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 07:54:37,638 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 07:54:37,638 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 07:54:37,638 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 07:54:37,638 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 07:54:37,639 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 07:54:37,639 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 07:54:37,639 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 07:54:37,639 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 07:54:37,639 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 07:54:37,640 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 07:54:37,640 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 07:54:37,640 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 07:54:37,640 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 07:54:37,640 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 07:54:37,640 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 07:54:37,641 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 07:54:37,641 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 07:54:37,641 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 07:54:37,641 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 07:54:37,641 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2022-01-10 07:54:37,642 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2022-01-10 07:54:37,642 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 07:54:37,642 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 07:54:37,642 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 07:54:37,642 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 07:54:37,643 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 07:54:37,837 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 07:54:37,856 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 07:54:37,857 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 07:54:37,858 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 07:54:37,860 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 07:54:37,862 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/gcd_2+newton_3_4.i
[2022-01-10 07:54:37,912 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d3259687/9220fcbd03c34c70be3d7ef6ecafc6e3/FLAG8d671e4f1
[2022-01-10 07:54:38,231 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 07:54:38,231 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_2+newton_3_4.i
[2022-01-10 07:54:38,237 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d3259687/9220fcbd03c34c70be3d7ef6ecafc6e3/FLAG8d671e4f1
[2022-01-10 07:54:38,661 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d3259687/9220fcbd03c34c70be3d7ef6ecafc6e3
[2022-01-10 07:54:38,664 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 07:54:38,664 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-10 07:54:38,668 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 07:54:38,668 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 07:54:38,674 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 07:54:38,675 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:54:38" (1/1) ...
[2022-01-10 07:54:38,677 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33773e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:38, skipping insertion in model container
[2022-01-10 07:54:38,677 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:54:38" (1/1) ...
[2022-01-10 07:54:38,682 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 07:54:38,693 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 07:54:38,809 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_4.i[1226,1239]
[2022-01-10 07:54:38,829 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_4.i[2862,2875]
[2022-01-10 07:54:38,830 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 07:54:38,850 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 07:54:38,865 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_4.i[1226,1239]
[2022-01-10 07:54:38,876 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_4.i[2862,2875]
[2022-01-10 07:54:38,877 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 07:54:38,892 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 07:54:38,893 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:38 WrapperNode
[2022-01-10 07:54:38,893 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 07:54:38,894 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 07:54:38,894 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 07:54:38,894 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 07:54:38,901 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:38" (1/1) ...
[2022-01-10 07:54:38,909 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:38" (1/1) ...
[2022-01-10 07:54:38,938 INFO  L137                Inliner]: procedures = 28, calls = 18, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 77
[2022-01-10 07:54:38,938 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 07:54:38,939 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 07:54:38,940 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 07:54:38,940 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 07:54:38,946 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:38" (1/1) ...
[2022-01-10 07:54:38,947 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:38" (1/1) ...
[2022-01-10 07:54:38,965 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:38" (1/1) ...
[2022-01-10 07:54:38,965 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:38" (1/1) ...
[2022-01-10 07:54:38,971 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:38" (1/1) ...
[2022-01-10 07:54:38,984 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:38" (1/1) ...
[2022-01-10 07:54:38,985 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:38" (1/1) ...
[2022-01-10 07:54:38,988 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 07:54:38,988 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 07:54:38,989 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 07:54:38,989 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 07:54:38,995 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:38" (1/1) ...
[2022-01-10 07:54:39,002 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 07:54:39,012 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 07:54:39,029 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 07:54:39,036 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 07:54:39,057 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 07:54:39,058 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 07:54:39,058 INFO  L130     BoogieDeclarations]: Found specification of procedure fp
[2022-01-10 07:54:39,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure fp
[2022-01-10 07:54:39,058 INFO  L130     BoogieDeclarations]: Found specification of procedure f
[2022-01-10 07:54:39,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure f
[2022-01-10 07:54:39,058 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 07:54:39,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 07:54:39,113 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 07:54:39,114 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 07:54:39,245 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 07:54:39,250 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 07:54:39,250 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 07:54:39,251 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:54:39 BoogieIcfgContainer
[2022-01-10 07:54:39,252 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 07:54:39,253 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 07:54:39,253 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 07:54:39,256 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 07:54:39,256 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:54:38" (1/3) ...
[2022-01-10 07:54:39,257 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701607e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:54:39, skipping insertion in model container
[2022-01-10 07:54:39,257 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:54:38" (2/3) ...
[2022-01-10 07:54:39,257 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701607e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:54:39, skipping insertion in model container
[2022-01-10 07:54:39,257 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:54:39" (3/3) ...
[2022-01-10 07:54:39,258 INFO  L111   eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_4.i
[2022-01-10 07:54:39,263 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 07:54:39,263 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2022-01-10 07:54:39,302 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 07:54:39,307 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 07:54:39,308 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2022-01-10 07:54:39,322 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-10 07:54:39,325 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 07:54:39,326 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 07:54:39,335 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 07:54:39,335 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 07:54:39,339 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 07:54:39,339 INFO  L85        PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times
[2022-01-10 07:54:39,348 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 07:54:39,349 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565145945]
[2022-01-10 07:54:39,349 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 07:54:39,353 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 07:54:39,359 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 07:54:39,377 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 07:54:39,383 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 07:54:39,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 07:54:39,457 INFO  L263         TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-01-10 07:54:39,461 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 07:54:39,616 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 07:54:39,616 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 07:54:39,617 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 07:54:39,617 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565145945]
[2022-01-10 07:54:39,618 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565145945] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 07:54:39,618 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 07:54:39,618 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 07:54:39,619 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263452717]
[2022-01-10 07:54:39,620 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 07:54:39,623 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 07:54:39,626 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 07:54:39,655 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 07:54:39,655 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 07:54:39,658 INFO  L87              Difference]: Start difference. First operand  has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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 07:54:39,694 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 07:54:39,694 INFO  L93              Difference]: Finished difference Result 74 states and 94 transitions.
[2022-01-10 07:54:39,695 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 07:54:39,696 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 07:54:39,697 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 07:54:39,703 INFO  L225             Difference]: With dead ends: 74
[2022-01-10 07:54:39,703 INFO  L226             Difference]: Without dead ends: 33
[2022-01-10 07:54:39,711 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 07:54:39,721 INFO  L933         BasicCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 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 07:54:39,722 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time]
[2022-01-10 07:54:39,736 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2022-01-10 07:54:39,758 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2022-01-10 07:54:39,760 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-10 07:54:39,761 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions.
[2022-01-10 07:54:39,762 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11
[2022-01-10 07:54:39,763 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 07:54:39,763 INFO  L470      AbstractCegarLoop]: Abstraction has 33 states and 39 transitions.
[2022-01-10 07:54:39,763 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 07:54:39,763 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions.
[2022-01-10 07:54:39,765 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 07:54:39,765 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 07:54:39,765 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 07:54:39,776 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 07:54:39,979 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 07:54:39,980 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 07:54:39,983 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 07:54:39,983 INFO  L85        PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times
[2022-01-10 07:54:39,985 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 07:54:39,986 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204658850]
[2022-01-10 07:54:39,986 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 07:54:39,986 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 07:54:39,987 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 07:54:39,988 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 07:54:39,990 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 07:54:40,033 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 07:54:40,036 INFO  L263         TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-01-10 07:54:40,037 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 07:54:40,102 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 07:54:40,103 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 07:54:40,103 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 07:54:40,103 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204658850]
[2022-01-10 07:54:40,103 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204658850] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 07:54:40,103 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 07:54:40,103 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 07:54:40,104 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981054252]
[2022-01-10 07:54:40,104 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 07:54:40,105 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 07:54:40,105 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 07:54:40,105 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 07:54:40,105 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 07:54:40,106 INFO  L87              Difference]: Start difference. First operand 33 states and 39 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 07:54:40,185 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 07:54:40,186 INFO  L93              Difference]: Finished difference Result 40 states and 46 transitions.
[2022-01-10 07:54:40,187 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 07:54:40,187 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 07:54:40,187 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 07:54:40,188 INFO  L225             Difference]: With dead ends: 40
[2022-01-10 07:54:40,188 INFO  L226             Difference]: Without dead ends: 34
[2022-01-10 07:54:40,188 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 07:54:40,189 INFO  L933         BasicCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 99 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 07:54:40,190 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 99 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 07:54:40,192 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2022-01-10 07:54:40,196 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33.
[2022-01-10 07:54:40,197 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-10 07:54:40,197 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions.
[2022-01-10 07:54:40,198 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11
[2022-01-10 07:54:40,198 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 07:54:40,198 INFO  L470      AbstractCegarLoop]: Abstraction has 33 states and 39 transitions.
[2022-01-10 07:54:40,198 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 07:54:40,198 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions.
[2022-01-10 07:54:40,201 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-10 07:54:40,201 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 07:54:40,201 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 07:54:40,212 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 07:54:40,410 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 07:54:40,410 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 07:54:40,411 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 07:54:40,411 INFO  L85        PathProgramCache]: Analyzing trace with hash 149955676, now seen corresponding path program 1 times
[2022-01-10 07:54:40,411 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 07:54:40,411 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3097008]
[2022-01-10 07:54:40,411 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 07:54:40,411 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 07:54:40,412 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 07:54:40,413 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 07:54:40,414 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 07:54:40,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 07:54:40,461 INFO  L263         TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-01-10 07:54:40,462 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 07:54:40,502 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 07:54:40,503 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-01-10 07:54:40,503 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 07:54:40,503 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3097008]
[2022-01-10 07:54:40,503 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [3097008] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 07:54:40,503 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 07:54:40,504 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-10 07:54:40,504 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133803984]
[2022-01-10 07:54:40,504 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 07:54:40,504 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-10 07:54:40,504 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 07:54:40,505 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-10 07:54:40,505 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-10 07:54:40,505 INFO  L87              Difference]: Start difference. First operand 33 states and 39 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 07:54:40,542 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 07:54:40,542 INFO  L93              Difference]: Finished difference Result 41 states and 47 transitions.
[2022-01-10 07:54:40,543 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-01-10 07:54:40,543 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 07:54:40,543 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 07:54:40,544 INFO  L225             Difference]: With dead ends: 41
[2022-01-10 07:54:40,544 INFO  L226             Difference]: Without dead ends: 33
[2022-01-10 07:54:40,544 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 07:54:40,545 INFO  L933         BasicCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 99 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 07:54:40,546 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 99 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 07:54:40,546 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2022-01-10 07:54:40,549 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2022-01-10 07:54:40,550 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-10 07:54:40,550 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions.
[2022-01-10 07:54:40,551 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12
[2022-01-10 07:54:40,551 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 07:54:40,551 INFO  L470      AbstractCegarLoop]: Abstraction has 33 states and 38 transitions.
[2022-01-10 07:54:40,551 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 07:54:40,551 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions.
[2022-01-10 07:54:40,551 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-01-10 07:54:40,552 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 07:54:40,552 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 07:54:40,563 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 07:54:40,761 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 07:54:40,761 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 07:54:40,762 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 07:54:40,762 INFO  L85        PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times
[2022-01-10 07:54:40,762 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 07:54:40,763 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381110145]
[2022-01-10 07:54:40,763 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 07:54:40,763 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 07:54:40,763 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 07:54:40,764 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 07:54:40,766 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 07:54:40,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 07:54:40,820 INFO  L263         TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-10 07:54:40,821 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 07:54:40,997 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 07:54:40,997 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 07:54:41,140 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 07:54:41,141 INFO  L139   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2022-01-10 07:54:41,141 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381110145]
[2022-01-10 07:54:41,141 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381110145] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 07:54:41,141 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-10 07:54:41,141 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2022-01-10 07:54:41,141 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896250260]
[2022-01-10 07:54:41,142 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-10 07:54:41,142 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2022-01-10 07:54:41,142 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2022-01-10 07:54:41,143 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2022-01-10 07:54:41,143 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182
[2022-01-10 07:54:41,143 INFO  L87              Difference]: Start difference. First operand 33 states and 38 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 07:54:41,816 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 07:54:41,816 INFO  L93              Difference]: Finished difference Result 50 states and 57 transitions.
[2022-01-10 07:54:41,817 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2022-01-10 07:54:41,817 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 07:54:41,817 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 07:54:41,818 INFO  L225             Difference]: With dead ends: 50
[2022-01-10 07:54:41,818 INFO  L226             Difference]: Without dead ends: 36
[2022-01-10 07:54:41,819 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600
[2022-01-10 07:54:41,819 INFO  L933         BasicCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2022-01-10 07:54:41,820 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 297 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2022-01-10 07:54:41,820 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2022-01-10 07:54:41,823 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2022-01-10 07:54:41,824 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-01-10 07:54:41,824 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions.
[2022-01-10 07:54:41,824 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 12
[2022-01-10 07:54:41,825 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 07:54:41,825 INFO  L470      AbstractCegarLoop]: Abstraction has 36 states and 41 transitions.
[2022-01-10 07:54:41,825 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 07:54:41,825 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions.
[2022-01-10 07:54:41,826 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-01-10 07:54:41,826 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 07:54:41,826 INFO  L514         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 07:54:41,843 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2022-01-10 07:54:42,035 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 07:54:42,035 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 07:54:42,036 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 07:54:42,036 INFO  L85        PathProgramCache]: Analyzing trace with hash -2084161321, now seen corresponding path program 2 times
[2022-01-10 07:54:42,036 INFO  L121   FreeRefinementEngine]: Executing refinement strategy WOLF
[2022-01-10 07:54:42,036 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331295123]
[2022-01-10 07:54:42,036 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 07:54:42,037 INFO  L168          SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2022-01-10 07:54:42,037 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2022-01-10 07:54:42,038 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 07:54:42,041 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 07:54:43,781 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 07:54:43,781 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 07:54:43,794 WARN  L261         TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-01-10 07:54:43,795 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 07:55:44,467 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 07:55:44,468 INFO  L328         TraceCheckSpWp]: Computing backward predicates...