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


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 21:10:39,629 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 21:10:39,631 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 21:10:39,678 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 21:10:39,678 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 21:10:39,679 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 21:10:39,680 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 21:10:39,681 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 21:10:39,682 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 21:10:39,682 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-10 21:10:39,683 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-10 21:10:39,683 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-10 21:10:39,684 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 21:10:39,684 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 21:10:39,685 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 21:10:39,685 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 21:10:39,686 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 21:10:39,686 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 21:10:39,688 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 21:10:39,689 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 21:10:39,690 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 21:10:39,693 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 21:10:39,694 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 21:10:39,695 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 21:10:39,699 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 21:10:39,700 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 21:10:39,700 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 21:10:39,700 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 21:10:39,701 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 21:10:39,701 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 21:10:39,701 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 21:10:39,702 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 21:10:39,702 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 21:10:39,702 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 21:10:39,703 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 21:10:39,703 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 21:10:39,703 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 21:10:39,704 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 21:10:39,704 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 21:10:39,704 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 21:10:39,705 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 21:10:39,706 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf
[2022-01-10 21:10:39,727 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 21:10:39,728 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 21:10:39,728 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 21:10:39,728 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 21:10:39,729 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 21:10:39,729 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 21:10:39,729 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 21:10:39,729 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 21:10:39,730 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 21:10:39,730 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 21:10:39,730 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 21:10:39,730 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 21:10:39,730 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 21:10:39,731 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 21:10:39,731 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 21:10:39,731 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 21:10:39,731 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 21:10:39,731 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 21:10:39,731 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 21:10:39,731 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 21:10:39,731 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 21:10:39,732 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 21:10:39,732 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 21:10:39,732 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 21:10:39,732 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 21:10:39,733 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 21:10:39,733 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 21:10:39,733 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 21:10:39,733 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 21:10:39,733 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 21:10:39,733 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 21:10:39,733 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 21:10:39,734 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 21:10:39,734 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_NONE
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 21:10:39,894 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 21:10:39,907 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 21:10:39,908 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 21:10:39,909 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 21:10:39,911 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 21:10:39,912 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_seq_init_ground.i
[2022-01-10 21:10:39,974 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/423be76e8/77986451b6184da39b06fcf7cd0fa7cb/FLAG3911a2e0f
[2022-01-10 21:10:40,353 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 21:10:40,353 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_seq_init_ground.i
[2022-01-10 21:10:40,357 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/423be76e8/77986451b6184da39b06fcf7cd0fa7cb/FLAG3911a2e0f
[2022-01-10 21:10:40,367 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/423be76e8/77986451b6184da39b06fcf7cd0fa7cb
[2022-01-10 21:10:40,369 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 21:10:40,369 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 21:10:40,381 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 21:10:40,381 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 21:10:40,383 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 21:10:40,384 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:10:40" (1/1) ...
[2022-01-10 21:10:40,384 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f25fed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:10:40, skipping insertion in model container
[2022-01-10 21:10:40,384 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:10:40" (1/1) ...
[2022-01-10 21:10:40,388 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 21:10:40,396 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 21:10:40,518 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_seq_init_ground.i[817,830]
[2022-01-10 21:10:40,525 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 21:10:40,538 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 21:10:40,545 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_seq_init_ground.i[817,830]
[2022-01-10 21:10:40,549 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 21:10:40,557 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 21:10:40,557 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:10:40 WrapperNode
[2022-01-10 21:10:40,557 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 21:10:40,558 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 21:10:40,558 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 21:10:40,558 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 21:10:40,562 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:10:40" (1/1) ...
[2022-01-10 21:10:40,567 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:10:40" (1/1) ...
[2022-01-10 21:10:40,577 INFO  L137                Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46
[2022-01-10 21:10:40,578 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 21:10:40,578 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 21:10:40,578 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 21:10:40,578 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 21:10:40,582 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:10:40" (1/1) ...
[2022-01-10 21:10:40,583 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:10:40" (1/1) ...
[2022-01-10 21:10:40,585 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:10:40" (1/1) ...
[2022-01-10 21:10:40,585 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:10:40" (1/1) ...
[2022-01-10 21:10:40,589 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:10:40" (1/1) ...
[2022-01-10 21:10:40,591 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:10:40" (1/1) ...
[2022-01-10 21:10:40,592 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:10:40" (1/1) ...
[2022-01-10 21:10:40,593 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 21:10:40,593 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 21:10:40,593 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 21:10:40,593 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 21:10:40,594 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:10:40" (1/1) ...
[2022-01-10 21:10:40,602 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 21:10:40,608 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:10:40,617 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-10 21:10:40,624 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-10 21:10:40,653 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 21:10:40,653 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 21:10:40,653 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-01-10 21:10:40,653 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2022-01-10 21:10:40,654 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 21:10:40,654 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 21:10:40,654 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-10 21:10:40,654 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2022-01-10 21:10:40,702 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 21:10:40,703 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 21:10:40,810 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 21:10:40,814 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 21:10:40,814 INFO  L299             CfgBuilder]: Removed 2 assume(true) statements.
[2022-01-10 21:10:40,815 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:10:40 BoogieIcfgContainer
[2022-01-10 21:10:40,815 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 21:10:40,816 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 21:10:40,816 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 21:10:40,816 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 21:10:40,818 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:10:40" (1/1) ...
[2022-01-10 21:10:40,894 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:10:40 BasicIcfg
[2022-01-10 21:10:40,894 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 21:10:40,895 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 21:10:40,896 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 21:10:40,897 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 21:10:40,898 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:10:40" (1/4) ...
[2022-01-10 21:10:40,898 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480c2f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:10:40, skipping insertion in model container
[2022-01-10 21:10:40,898 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:10:40" (2/4) ...
[2022-01-10 21:10:40,898 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480c2f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:10:40, skipping insertion in model container
[2022-01-10 21:10:40,898 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:10:40" (3/4) ...
[2022-01-10 21:10:40,899 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480c2f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:10:40, skipping insertion in model container
[2022-01-10 21:10:40,899 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:10:40" (4/4) ...
[2022-01-10 21:10:40,899 INFO  L111   eAbstractionObserver]: Analyzing ICFG standard_seq_init_ground.iTransformedIcfg
[2022-01-10 21:10:40,903 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 21:10:40,903 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 21:10:40,929 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 21:10:40,933 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-01-10 21:10:40,933 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 21:10:40,940 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:10:40,943 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-01-10 21:10:40,943 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:10:40,943 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:10:40,944 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:10:40,947 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:10:40,947 INFO  L85        PathProgramCache]: Analyzing trace with hash -1741482575, now seen corresponding path program 1 times
[2022-01-10 21:10:40,952 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:10:40,952 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334920530]
[2022-01-10 21:10:40,952 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:10:40,953 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:10:41,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:10:41,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 21:10:41,046 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:10:41,046 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334920530]
[2022-01-10 21:10:41,046 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334920530] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 21:10:41,046 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 21:10:41,047 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 21:10:41,048 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902142015]
[2022-01-10 21:10:41,048 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 21:10:41,050 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 21:10:41,050 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:10:41,066 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 21:10:41,067 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 21:10:41,068 INFO  L87              Difference]: Start difference. First operand  has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:10:41,082 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:10:41,082 INFO  L93              Difference]: Finished difference Result 25 states and 31 transitions.
[2022-01-10 21:10:41,083 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 21:10:41,084 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7
[2022-01-10 21:10:41,084 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:10:41,088 INFO  L225             Difference]: With dead ends: 25
[2022-01-10 21:10:41,088 INFO  L226             Difference]: Without dead ends: 10
[2022-01-10 21:10:41,090 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 21:10:41,094 INFO  L933         BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 21:10:41,095 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 21:10:41,106 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2022-01-10 21:10:41,120 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10.
[2022-01-10 21:10:41,121 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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 21:10:41,122 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions.
[2022-01-10 21:10:41,123 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7
[2022-01-10 21:10:41,123 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:10:41,123 INFO  L470      AbstractCegarLoop]: Abstraction has 10 states and 11 transitions.
[2022-01-10 21:10:41,124 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:10:41,124 INFO  L276                IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions.
[2022-01-10 21:10:41,125 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-01-10 21:10:41,125 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:10:41,125 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:10:41,125 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 21:10:41,125 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:10:41,128 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:10:41,128 INFO  L85        PathProgramCache]: Analyzing trace with hash -1740559054, now seen corresponding path program 1 times
[2022-01-10 21:10:41,128 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:10:41,129 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057451820]
[2022-01-10 21:10:41,129 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:10:41,129 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:10:41,209 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:10:41,284 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 21:10:41,285 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:10:41,285 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057451820]
[2022-01-10 21:10:41,285 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057451820] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 21:10:41,285 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 21:10:41,285 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 21:10:41,285 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030235491]
[2022-01-10 21:10:41,286 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 21:10:41,286 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 21:10:41,286 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:10:41,287 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 21:10:41,287 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 21:10:41,287 INFO  L87              Difference]: Start difference. First operand 10 states and 11 transitions. Second operand  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:10:41,318 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:10:41,318 INFO  L93              Difference]: Finished difference Result 18 states and 20 transitions.
[2022-01-10 21:10:41,319 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 21:10:41,319 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7
[2022-01-10 21:10:41,319 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:10:41,319 INFO  L225             Difference]: With dead ends: 18
[2022-01-10 21:10:41,320 INFO  L226             Difference]: Without dead ends: 11
[2022-01-10 21:10:41,322 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 21:10:41,323 INFO  L933         BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 21:10:41,323 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 21:10:41,324 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11 states.
[2022-01-10 21:10:41,325 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11.
[2022-01-10 21:10:41,325 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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 21:10:41,326 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions.
[2022-01-10 21:10:41,326 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7
[2022-01-10 21:10:41,326 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:10:41,326 INFO  L470      AbstractCegarLoop]: Abstraction has 11 states and 12 transitions.
[2022-01-10 21:10:41,326 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:10:41,326 INFO  L276                IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions.
[2022-01-10 21:10:41,326 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-01-10 21:10:41,326 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:10:41,327 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:10:41,327 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 21:10:41,329 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:10:41,330 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:10:41,330 INFO  L85        PathProgramCache]: Analyzing trace with hash 1903934951, now seen corresponding path program 1 times
[2022-01-10 21:10:41,330 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:10:41,330 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715829377]
[2022-01-10 21:10:41,330 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:10:41,330 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:10:41,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:10:41,407 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 21:10:41,407 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:10:41,408 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715829377]
[2022-01-10 21:10:41,408 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715829377] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 21:10:41,408 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14448783]
[2022-01-10 21:10:41,408 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:10:41,408 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:10:41,408 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:10:41,410 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 21:10:41,416 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-10 21:10:41,513 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:10:41,514 INFO  L263         TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-01-10 21:10:41,517 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:10:41,710 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 21:10:41,710 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 21:10:41,767 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 21:10:41,767 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [14448783] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 21:10:41,769 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 21:10:41,769 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-01-10 21:10:41,769 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565580151]
[2022-01-10 21:10:41,769 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 21:10:41,769 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-01-10 21:10:41,769 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:10:41,770 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-01-10 21:10:41,771 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-01-10 21:10:41,771 INFO  L87              Difference]: Start difference. First operand 11 states and 12 transitions. Second operand  has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:10:41,932 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:10:41,933 INFO  L93              Difference]: Finished difference Result 21 states and 25 transitions.
[2022-01-10 21:10:41,933 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 21:10:41,933 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2022-01-10 21:10:41,933 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:10:41,933 INFO  L225             Difference]: With dead ends: 21
[2022-01-10 21:10:41,934 INFO  L226             Difference]: Without dead ends: 14
[2022-01-10 21:10:41,934 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2022-01-10 21:10:41,934 INFO  L933         BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 21:10:41,935 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 21:10:41,935 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2022-01-10 21:10:41,937 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2022-01-10 21:10:41,937 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:10:41,938 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions.
[2022-01-10 21:10:41,938 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8
[2022-01-10 21:10:41,938 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:10:41,938 INFO  L470      AbstractCegarLoop]: Abstraction has 14 states and 15 transitions.
[2022-01-10 21:10:41,938 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:10:41,938 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions.
[2022-01-10 21:10:41,938 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-10 21:10:41,939 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:10:41,939 INFO  L514         BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:10:41,945 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-10 21:10:42,139 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:10:42,140 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:10:42,140 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:10:42,140 INFO  L85        PathProgramCache]: Analyzing trace with hash 1522152050, now seen corresponding path program 2 times
[2022-01-10 21:10:42,140 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:10:42,140 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488999111]
[2022-01-10 21:10:42,141 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:10:42,141 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:10:42,225 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:10:42,287 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 21:10:42,288 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:10:42,288 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488999111]
[2022-01-10 21:10:42,288 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488999111] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 21:10:42,288 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902856798]
[2022-01-10 21:10:42,288 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 21:10:42,288 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:10:42,288 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:10:42,289 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 21:10:42,326 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-10 21:10:42,788 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 21:10:42,789 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 21:10:42,790 INFO  L263         TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 15 conjunts are in the unsatisfiable core
[2022-01-10 21:10:42,791 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 21:10:46,186 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 21:10:46,186 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 21:10:46,546 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 21:10:46,546 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902856798] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 21:10:46,547 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 21:10:46,547 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16
[2022-01-10 21:10:46,547 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385292709]
[2022-01-10 21:10:46,547 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 21:10:46,547 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-01-10 21:10:46,547 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 21:10:46,548 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-01-10 21:10:46,548 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=161, Unknown=1, NotChecked=0, Total=240
[2022-01-10 21:10:46,548 INFO  L87              Difference]: Start difference. First operand 14 states and 15 transitions. Second operand  has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:10:54,745 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 21:10:54,745 INFO  L93              Difference]: Finished difference Result 26 states and 32 transitions.
[2022-01-10 21:10:54,746 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-01-10 21:10:54,746 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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 21:10:54,746 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 21:10:54,746 INFO  L225             Difference]: With dead ends: 26
[2022-01-10 21:10:54,746 INFO  L226             Difference]: Without dead ends: 19
[2022-01-10 21:10:54,747 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=120, Invalid=221, Unknown=1, NotChecked=0, Total=342
[2022-01-10 21:10:54,748 INFO  L933         BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2022-01-10 21:10:54,748 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 7 Unchecked, 0.7s Time]
[2022-01-10 21:10:54,748 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2022-01-10 21:10:54,751 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2022-01-10 21:10:54,751 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:10:54,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions.
[2022-01-10 21:10:54,752 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11
[2022-01-10 21:10:54,752 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 21:10:54,752 INFO  L470      AbstractCegarLoop]: Abstraction has 19 states and 20 transitions.
[2022-01-10 21:10:54,752 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 21:10:54,752 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions.
[2022-01-10 21:10:54,752 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-10 21:10:54,753 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 21:10:54,753 INFO  L514         BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 21:10:54,757 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-10 21:10:54,957 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2022-01-10 21:10:54,958 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 21:10:54,958 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 21:10:54,958 INFO  L85        PathProgramCache]: Analyzing trace with hash -725900441, now seen corresponding path program 3 times
[2022-01-10 21:10:54,958 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 21:10:54,959 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512655539]
[2022-01-10 21:10:54,959 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 21:10:54,959 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 21:10:55,070 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 21:10:55,228 INFO  L134       CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 21:10:55,228 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 21:10:55,228 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512655539]
[2022-01-10 21:10:55,229 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512655539] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 21:10:55,229 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331897865]
[2022-01-10 21:10:55,229 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-10 21:10:55,229 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 21:10:55,229 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 21:10:55,244 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 21:10:55,245 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-10 21:11:06,402 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2022-01-10 21:11:06,402 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 21:11:06,430 INFO  L263         TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 38 conjunts are in the unsatisfiable core
[2022-01-10 21:11:06,431 INFO  L286         TraceCheckSpWp]: Computing forward predicates...