/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/loop-zilu/benchmark34_conjunctive.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 20:25:52,436 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 20:25:52,444 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 20:25:52,473 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 20:25:52,473 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 20:25:52,475 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 20:25:52,478 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 20:25:52,480 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 20:25:52,481 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 20:25:52,488 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 20:25:52,491 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 20:25:52,493 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 20:25:52,494 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 20:25:52,495 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 20:25:52,495 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 20:25:52,499 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 20:25:52,502 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 20:25:52,502 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 20:25:52,504 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 20:25:52,505 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 20:25:52,505 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 20:25:52,510 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 20:25:52,510 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 20:25:52,510 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 20:25:52,511 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 20:25:52,511 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 20:25:52,512 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 20:25:52,512 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 20:25:52,512 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 20:25:52,513 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 20:25:52,513 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 20:25:52,514 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 20:25:52,514 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 20:25:52,514 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 20:25:52,514 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 20:25:52,514 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 20:25:52,515 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 20:25:52,516 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 20:25:52,533 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 20:25:52,534 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 20:25:52,534 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 20:25:52,534 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 20:25:52,535 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 20:25:52,535 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 20:25:52,535 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 20:25:52,535 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 20:25:52,535 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 20:25:52,536 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 20:25:52,536 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 20:25:52,536 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 20:25:52,536 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 20:25:52,536 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 20:25:52,536 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 20:25:52,537 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 20:25:52,537 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 20:25:52,537 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 20:25:52,537 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 20:25:52,537 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 20:25:52,537 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 20:25:52,537 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:25:52,537 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 20:25:52,538 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 20:25:52,538 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 20:25:52,538 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 20:25:52,538 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 20:25:52,538 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 20:25:52,538 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 20:25:52,538 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 20:25:52,538 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 20:25:52,538 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 20:25:52,539 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 20:25:52,539 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 20:25:52,702 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 20:25:52,717 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 20:25:52,718 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 20:25:52,719 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 20:25:52,720 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 20:25:52,720 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark34_conjunctive.i
[2022-01-10 20:25:52,771 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc87eb29/4325033186ed45ec91954f61d7dede89/FLAG11d4e4c9f
[2022-01-10 20:25:53,060 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 20:25:53,060 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark34_conjunctive.i
[2022-01-10 20:25:53,068 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc87eb29/4325033186ed45ec91954f61d7dede89/FLAG11d4e4c9f
[2022-01-10 20:25:53,483 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc87eb29/4325033186ed45ec91954f61d7dede89
[2022-01-10 20:25:53,485 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 20:25:53,486 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 20:25:53,487 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 20:25:53,487 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 20:25:53,493 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 20:25:53,494 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:25:53" (1/1) ...
[2022-01-10 20:25:53,494 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c09d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:25:53, skipping insertion in model container
[2022-01-10 20:25:53,495 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:25:53" (1/1) ...
[2022-01-10 20:25:53,499 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 20:25:53,507 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 20:25:53,613 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark34_conjunctive.i[873,886]
[2022-01-10 20:25:53,620 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:25:53,626 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 20:25:53,642 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark34_conjunctive.i[873,886]
[2022-01-10 20:25:53,649 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:25:53,657 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 20:25:53,657 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:25:53 WrapperNode
[2022-01-10 20:25:53,658 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 20:25:53,658 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 20:25:53,658 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 20:25:53,658 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 20:25:53,663 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:25:53" (1/1) ...
[2022-01-10 20:25:53,668 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:25:53" (1/1) ...
[2022-01-10 20:25:53,677 INFO  L137                Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34
[2022-01-10 20:25:53,678 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 20:25:53,678 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 20:25:53,678 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 20:25:53,678 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 20:25:53,683 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:25:53" (1/1) ...
[2022-01-10 20:25:53,683 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:25:53" (1/1) ...
[2022-01-10 20:25:53,684 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:25:53" (1/1) ...
[2022-01-10 20:25:53,684 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:25:53" (1/1) ...
[2022-01-10 20:25:53,687 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:25:53" (1/1) ...
[2022-01-10 20:25:53,689 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:25:53" (1/1) ...
[2022-01-10 20:25:53,689 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:25:53" (1/1) ...
[2022-01-10 20:25:53,690 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 20:25:53,691 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 20:25:53,691 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 20:25:53,691 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 20:25:53,692 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:25:53" (1/1) ...
[2022-01-10 20:25:53,697 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:25:53,705 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:25:53,714 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 20:25:53,718 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 20:25:53,745 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 20:25:53,745 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 20:25:53,745 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 20:25:53,745 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 20:25:53,790 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 20:25:53,791 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 20:25:53,853 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 20:25:53,861 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 20:25:53,861 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 20:25:53,862 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:25:53 BoogieIcfgContainer
[2022-01-10 20:25:53,862 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 20:25:53,863 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 20:25:53,863 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 20:25:53,880 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 20:25:53,882 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:25:53" (1/1) ...
[2022-01-10 20:25:53,933 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:25:53 BasicIcfg
[2022-01-10 20:25:53,933 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 20:25:53,934 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 20:25:53,934 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 20:25:53,936 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 20:25:53,936 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:25:53" (1/4) ...
[2022-01-10 20:25:53,937 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f49485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:25:53, skipping insertion in model container
[2022-01-10 20:25:53,937 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:25:53" (2/4) ...
[2022-01-10 20:25:53,937 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f49485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:25:53, skipping insertion in model container
[2022-01-10 20:25:53,937 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:25:53" (3/4) ...
[2022-01-10 20:25:53,937 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f49485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:25:53, skipping insertion in model container
[2022-01-10 20:25:53,938 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:25:53" (4/4) ...
[2022-01-10 20:25:53,938 INFO  L111   eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.iTransformedIcfg
[2022-01-10 20:25:53,941 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 20:25:53,941 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 20:25:53,971 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 20:25:53,976 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 20:25:53,976 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 20:25:53,986 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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 20:25:53,988 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-01-10 20:25:53,989 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:25:53,989 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:25:53,989 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:25:53,992 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:25:53,993 INFO  L85        PathProgramCache]: Analyzing trace with hash 1973472424, now seen corresponding path program 1 times
[2022-01-10 20:25:54,000 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:25:54,001 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689198435]
[2022-01-10 20:25:54,001 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:25:54,001 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:25:54,064 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:25:54,095 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 20:25:54,096 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:25:54,096 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689198435]
[2022-01-10 20:25:54,097 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689198435] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:25:54,097 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:25:54,097 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 20:25:54,098 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651796457]
[2022-01-10 20:25:54,100 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:25:54,103 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-01-10 20:25:54,103 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:25:54,126 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-01-10 20:25:54,128 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-01-10 20:25:54,130 INFO  L87              Difference]: Start difference. First operand  has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 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) 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 20:25:54,137 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:25:54,137 INFO  L93              Difference]: Finished difference Result 20 states and 23 transitions.
[2022-01-10 20:25:54,140 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-01-10 20:25:54,141 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 20:25:54,141 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:25:54,145 INFO  L225             Difference]: With dead ends: 20
[2022-01-10 20:25:54,146 INFO  L226             Difference]: Without dead ends: 8
[2022-01-10 20:25:54,148 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 20:25:54,152 INFO  L933         BasicCegarLoop]: 13 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, 13 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 20:25:54,153 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 20:25:54,164 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8 states.
[2022-01-10 20:25:54,174 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8.
[2022-01-10 20:25:54,175 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 20:25:54,175 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions.
[2022-01-10 20:25:54,176 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7
[2022-01-10 20:25:54,176 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:25:54,176 INFO  L470      AbstractCegarLoop]: Abstraction has 8 states and 8 transitions.
[2022-01-10 20:25:54,176 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 20:25:54,178 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions.
[2022-01-10 20:25:54,178 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-01-10 20:25:54,178 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:25:54,178 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:25:54,178 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 20:25:54,178 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:25:54,179 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:25:54,179 INFO  L85        PathProgramCache]: Analyzing trace with hash 1973502215, now seen corresponding path program 1 times
[2022-01-10 20:25:54,179 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:25:54,179 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614359313]
[2022-01-10 20:25:54,179 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:25:54,179 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:25:54,200 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:25:54,256 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 20:25:54,257 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:25:54,257 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614359313]
[2022-01-10 20:25:54,257 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614359313] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:25:54,257 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:25:54,257 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 20:25:54,257 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122989812]
[2022-01-10 20:25:54,258 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:25:54,258 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 20:25:54,259 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:25:54,259 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 20:25:54,259 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 20:25:54,259 INFO  L87              Difference]: Start difference. First operand 8 states and 8 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 20:25:54,269 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:25:54,269 INFO  L93              Difference]: Finished difference Result 13 states and 13 transitions.
[2022-01-10 20:25:54,269 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 20:25:54,270 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 20:25:54,270 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:25:54,270 INFO  L225             Difference]: With dead ends: 13
[2022-01-10 20:25:54,270 INFO  L226             Difference]: Without dead ends: 9
[2022-01-10 20:25:54,270 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 20:25:54,271 INFO  L933         BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-10 20:25:54,272 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-10 20:25:54,272 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2022-01-10 20:25:54,274 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9.
[2022-01-10 20:25:54,274 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 20:25:54,274 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2022-01-10 20:25:54,274 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7
[2022-01-10 20:25:54,274 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:25:54,275 INFO  L470      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2022-01-10 20:25:54,275 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 20:25:54,275 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2022-01-10 20:25:54,275 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-01-10 20:25:54,275 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:25:54,275 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:25:54,275 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 20:25:54,276 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:25:54,276 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:25:54,276 INFO  L85        PathProgramCache]: Analyzing trace with hash 1049859691, now seen corresponding path program 1 times
[2022-01-10 20:25:54,276 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:25:54,276 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645489862]
[2022-01-10 20:25:54,276 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:25:54,277 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:25:54,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:25:54,455 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 20:25:54,456 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:25:54,456 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645489862]
[2022-01-10 20:25:54,456 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645489862] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 20:25:54,456 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814975906]
[2022-01-10 20:25:54,456 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:25:54,456 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:25:54,456 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:25:54,460 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 20:25:54,461 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 20:25:54,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:25:54,520 INFO  L263         TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-01-10 20:25:54,523 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-10 20:25:54,741 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 20:25:54,741 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-10 20:25:55,076 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 20:25:55,077 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [814975906] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-10 20:25:55,077 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-10 20:25:55,078 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10
[2022-01-10 20:25:55,080 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848223471]
[2022-01-10 20:25:55,080 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-10 20:25:55,081 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-10 20:25:55,081 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:25:55,081 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-10 20:25:55,082 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2022-01-10 20:25:55,082 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 20:25:55,228 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:25:55,228 INFO  L93              Difference]: Finished difference Result 17 states and 18 transitions.
[2022-01-10 20:25:55,229 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-01-10 20:25:55,229 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 20:25:55,229 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:25:55,229 INFO  L225             Difference]: With dead ends: 17
[2022-01-10 20:25:55,229 INFO  L226             Difference]: Without dead ends: 11
[2022-01-10 20:25:55,230 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182
[2022-01-10 20:25:55,231 INFO  L933         BasicCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-10 20:25:55,231 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-10 20:25:55,231 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11 states.
[2022-01-10 20:25:55,233 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11.
[2022-01-10 20:25:55,233 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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 20:25:55,233 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions.
[2022-01-10 20:25:55,234 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8
[2022-01-10 20:25:55,234 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:25:55,234 INFO  L470      AbstractCegarLoop]: Abstraction has 11 states and 11 transitions.
[2022-01-10 20:25:55,234 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 20:25:55,234 INFO  L276                IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions.
[2022-01-10 20:25:55,234 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2022-01-10 20:25:55,234 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:25:55,234 INFO  L514         BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:25:55,251 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-01-10 20:25:55,439 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 20:25:55,440 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:25:55,440 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:25:55,440 INFO  L85        PathProgramCache]: Analyzing trace with hash -375490069, now seen corresponding path program 2 times
[2022-01-10 20:25:55,440 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:25:55,441 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709216174]
[2022-01-10 20:25:55,441 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:25:55,441 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:25:55,486 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:25:56,076 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:25:56,077 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:25:56,077 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709216174]
[2022-01-10 20:25:56,077 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709216174] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 20:25:56,077 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921591245]
[2022-01-10 20:25:56,077 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-10 20:25:56,077 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:25:56,077 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:25:56,080 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 20:25:56,082 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 20:25:56,162 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-10 20:25:56,163 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-10 20:25:56,164 INFO  L263         TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 37 conjunts are in the unsatisfiable core
[2022-01-10 20:25:56,165 INFO  L286         TraceCheckSpWp]: Computing forward predicates...