/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label36.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 16:10:22,518 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 16:10:22,521 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 16:10:22,569 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 16:10:22,570 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-10 16:10:22,571 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-10 16:10:22,572 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-10 16:10:22,573 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-10 16:10:22,575 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-10 16:10:22,596 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-10 16:10:22,598 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-10 16:10:22,599 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 16:10:22,600 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 16:10:22,601 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 16:10:22,601 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 16:10:22,602 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 16:10:22,615 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 16:10:22,623 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 16:10:22,626 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 16:10:22,629 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 16:10:22,632 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 16:10:22,634 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 16:10:22,641 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 16:10:22,641 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 16:10:22,642 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 16:10:22,643 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 16:10:22,644 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 16:10:22,644 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 16:10:22,645 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 16:10:22,645 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 16:10:22,647 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 16:10:22,647 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 16:10:22,649 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 16:10:22,649 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 16:10:22,650 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-10 16:10:22,650 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-10 16:10:22,650 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-10 16:10:22,651 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-10 16:10:22,651 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 16:10:22,652 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf
[2022-01-10 16:10:22,679 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 16:10:22,680 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 16:10:22,680 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 16:10:22,680 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 16:10:22,682 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 16:10:22,682 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 16:10:22,682 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 16:10:22,682 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 16:10:22,683 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 16:10:22,683 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 16:10:22,684 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 16:10:22,684 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 16:10:22,684 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 16:10:22,684 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 16:10:22,684 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 16:10:22,684 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 16:10:22,685 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 16:10:22,685 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 16:10:22,685 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 16:10:22,685 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 16:10:22,685 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 16:10:22,686 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 16:10:22,686 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 16:10:22,687 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 16:10:22,687 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 16:10:22,687 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 16:10:22,687 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 16:10:22,687 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 16:10:22,687 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 16:10:22,688 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 16:10:22,688 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 16:10:22,688 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 16:10:22,689 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 16:10:22,689 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_LAZY
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 16:10:22,918 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 16:10:22,944 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 16:10:22,946 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 16:10:22,947 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 16:10:22,947 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 16:10:22,948 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label36.c
[2022-01-10 16:10:23,011 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbe52ec43/426204f7cb804b91878b6dfd0346f296/FLAG9d2fc6aac
[2022-01-10 16:10:23,758 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 16:10:23,759 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label36.c
[2022-01-10 16:10:23,809 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbe52ec43/426204f7cb804b91878b6dfd0346f296/FLAG9d2fc6aac
[2022-01-10 16:10:24,279 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbe52ec43/426204f7cb804b91878b6dfd0346f296
[2022-01-10 16:10:24,281 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 16:10:24,283 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 16:10:24,286 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 16:10:24,286 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 16:10:24,289 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 16:10:24,290 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:10:24" (1/1) ...
[2022-01-10 16:10:24,294 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eaf4b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:24, skipping insertion in model container
[2022-01-10 16:10:24,294 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:10:24" (1/1) ...
[2022-01-10 16:10:24,299 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 16:10:24,491 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 16:10:26,001 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label36.c[376862,376875]
[2022-01-10 16:10:26,022 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 16:10:26,032 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 16:10:26,831 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label36.c[376862,376875]
[2022-01-10 16:10:26,843 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 16:10:26,920 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 16:10:26,920 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:26 WrapperNode
[2022-01-10 16:10:26,921 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 16:10:26,922 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 16:10:26,922 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 16:10:26,922 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 16:10:26,928 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:26" (1/1) ...
[2022-01-10 16:10:27,023 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:26" (1/1) ...
[2022-01-10 16:10:27,397 INFO  L137                Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 12337
[2022-01-10 16:10:27,397 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 16:10:27,398 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 16:10:27,398 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 16:10:27,398 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 16:10:27,405 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:26" (1/1) ...
[2022-01-10 16:10:27,406 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:26" (1/1) ...
[2022-01-10 16:10:27,472 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:26" (1/1) ...
[2022-01-10 16:10:27,472 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:26" (1/1) ...
[2022-01-10 16:10:27,668 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:26" (1/1) ...
[2022-01-10 16:10:27,716 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:26" (1/1) ...
[2022-01-10 16:10:27,740 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:26" (1/1) ...
[2022-01-10 16:10:27,801 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 16:10:27,803 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 16:10:27,803 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 16:10:27,803 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 16:10:27,804 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:26" (1/1) ...
[2022-01-10 16:10:27,811 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 16:10:27,821 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 16:10:27,841 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 16:10:27,862 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 16:10:27,882 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 16:10:27,882 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 16:10:27,882 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 16:10:27,882 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 16:10:27,974 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 16:10:27,976 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 16:10:36,463 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 16:10:36,491 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 16:10:36,492 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-10 16:10:36,497 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:10:36 BoogieIcfgContainer
[2022-01-10 16:10:36,497 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 16:10:36,498 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 16:10:36,498 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 16:10:36,499 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 16:10:36,501 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:10:36" (1/1) ...
[2022-01-10 16:10:38,396 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 04:10:38 BasicIcfg
[2022-01-10 16:10:38,396 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 16:10:38,542 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 16:10:38,542 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 16:10:38,545 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 16:10:38,545 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:10:24" (1/4) ...
[2022-01-10 16:10:38,546 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ceaff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:10:38, skipping insertion in model container
[2022-01-10 16:10:38,546 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:26" (2/4) ...
[2022-01-10 16:10:38,546 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ceaff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:10:38, skipping insertion in model container
[2022-01-10 16:10:38,547 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:10:36" (3/4) ...
[2022-01-10 16:10:38,547 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ceaff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 04:10:38, skipping insertion in model container
[2022-01-10 16:10:38,547 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 04:10:38" (4/4) ...
[2022-01-10 16:10:38,548 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label36.cTransformedIcfg
[2022-01-10 16:10:38,558 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 16:10:38,558 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-10 16:10:38,609 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 16:10:38,616 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 16:10:38,617 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-10 16:10:38,667 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 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 16:10:38,759 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1653
[2022-01-10 16:10:38,759 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 16:10:38,761 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 16:10:38,762 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 16:10:38,766 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 16:10:38,766 INFO  L85        PathProgramCache]: Analyzing trace with hash -1153616070, now seen corresponding path program 1 times
[2022-01-10 16:10:38,773 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 16:10:38,774 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335464505]
[2022-01-10 16:10:38,774 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 16:10:38,775 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 16:10:40,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 16:10:41,660 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 16:10:41,661 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 16:10:41,661 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335464505]
[2022-01-10 16:10:41,662 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335464505] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 16:10:41,662 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 16:10:41,662 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 16:10:41,664 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152212739]
[2022-01-10 16:10:41,664 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 16:10:41,671 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 16:10:41,672 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 16:10:41,697 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 16:10:41,698 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 16:10:41,705 INFO  L87              Difference]: Start difference. First operand  has 2185 states, 2183 states have (on average 1.8708199725148877) internal successors, (4084), 2184 states have internal predecessors, (4084), 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 3 states, 3 states have (on average 550.6666666666666) internal successors, (1652), 2 states have internal predecessors, (1652), 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 16:10:50,156 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 16:10:50,157 INFO  L93              Difference]: Finished difference Result 6263 states and 11838 transitions.
[2022-01-10 16:10:50,158 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 16:10:50,160 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 550.6666666666666) internal successors, (1652), 2 states have internal predecessors, (1652), 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 1652
[2022-01-10 16:10:50,166 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 16:10:50,209 INFO  L225             Difference]: With dead ends: 6263
[2022-01-10 16:10:50,209 INFO  L226             Difference]: Without dead ends: 4014
[2022-01-10 16:10:50,220 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:10:50,223 INFO  L933         BasicCegarLoop]: 1391 mSDtfsCounter, 380 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 5307 mSolverCounterSat, 2416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 7723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2416 IncrementalHoareTripleChecker+Valid, 5307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time
[2022-01-10 16:10:50,224 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 1617 Invalid, 7723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2416 Valid, 5307 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time]
[2022-01-10 16:10:50,248 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4014 states.
[2022-01-10 16:10:50,370 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4014 to 3931.
[2022-01-10 16:10:50,381 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 3931 states, 3930 states have (on average 1.7063613231552164) internal successors, (6706), 3930 states have internal predecessors, (6706), 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 16:10:50,395 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 6706 transitions.
[2022-01-10 16:10:50,397 INFO  L78                 Accepts]: Start accepts. Automaton has 3931 states and 6706 transitions. Word has length 1652
[2022-01-10 16:10:50,401 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 16:10:50,402 INFO  L470      AbstractCegarLoop]: Abstraction has 3931 states and 6706 transitions.
[2022-01-10 16:10:50,403 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 550.6666666666666) internal successors, (1652), 2 states have internal predecessors, (1652), 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 16:10:50,404 INFO  L276                IsEmpty]: Start isEmpty. Operand 3931 states and 6706 transitions.
[2022-01-10 16:10:50,464 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1661
[2022-01-10 16:10:50,465 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 16:10:50,465 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 16:10:50,466 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 16:10:50,466 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 16:10:50,468 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 16:10:50,468 INFO  L85        PathProgramCache]: Analyzing trace with hash -130623333, now seen corresponding path program 1 times
[2022-01-10 16:10:50,469 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 16:10:50,469 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518092540]
[2022-01-10 16:10:50,469 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 16:10:50,469 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 16:10:51,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 16:10:51,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 16:10:51,762 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 16:10:51,762 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518092540]
[2022-01-10 16:10:51,762 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518092540] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 16:10:51,762 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 16:10:51,763 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 16:10:51,763 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071392034]
[2022-01-10 16:10:51,763 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 16:10:51,767 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 16:10:51,767 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 16:10:51,768 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 16:10:51,768 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 16:10:51,769 INFO  L87              Difference]: Start difference. First operand 3931 states and 6706 transitions. Second operand  has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 2 states have internal predecessors, (1660), 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 16:10:59,656 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 16:10:59,657 INFO  L93              Difference]: Finished difference Result 11297 states and 19424 transitions.
[2022-01-10 16:10:59,663 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 16:10:59,664 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 2 states have internal predecessors, (1660), 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 1660
[2022-01-10 16:10:59,665 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 16:10:59,697 INFO  L225             Difference]: With dead ends: 11297
[2022-01-10 16:10:59,697 INFO  L226             Difference]: Without dead ends: 7368
[2022-01-10 16:10:59,711 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:10:59,713 INFO  L933         BasicCegarLoop]: 1926 mSDtfsCounter, 1889 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 5713 mSolverCounterSat, 1409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 7122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1409 IncrementalHoareTripleChecker+Valid, 5713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time
[2022-01-10 16:10:59,714 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [1889 Valid, 2235 Invalid, 7122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1409 Valid, 5713 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time]
[2022-01-10 16:10:59,728 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7368 states.
[2022-01-10 16:10:59,869 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7368 to 7361.
[2022-01-10 16:10:59,882 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 7361 states, 7360 states have (on average 1.5039402173913043) internal successors, (11069), 7360 states have internal predecessors, (11069), 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 16:10:59,900 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7361 states to 7361 states and 11069 transitions.
[2022-01-10 16:10:59,901 INFO  L78                 Accepts]: Start accepts. Automaton has 7361 states and 11069 transitions. Word has length 1660
[2022-01-10 16:10:59,901 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 16:10:59,901 INFO  L470      AbstractCegarLoop]: Abstraction has 7361 states and 11069 transitions.
[2022-01-10 16:10:59,902 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 553.3333333333334) internal successors, (1660), 2 states have internal predecessors, (1660), 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 16:10:59,902 INFO  L276                IsEmpty]: Start isEmpty. Operand 7361 states and 11069 transitions.
[2022-01-10 16:10:59,932 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1668
[2022-01-10 16:10:59,933 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 16:10:59,934 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 16:10:59,937 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 16:10:59,937 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 16:10:59,944 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 16:10:59,944 INFO  L85        PathProgramCache]: Analyzing trace with hash -1716288533, now seen corresponding path program 1 times
[2022-01-10 16:10:59,944 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 16:10:59,944 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573685001]
[2022-01-10 16:10:59,945 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 16:10:59,945 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 16:11:00,385 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 16:11:00,864 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 16:11:00,865 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 16:11:00,865 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573685001]
[2022-01-10 16:11:00,866 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573685001] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 16:11:00,866 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 16:11:00,866 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-10 16:11:00,866 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978326789]
[2022-01-10 16:11:00,866 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 16:11:00,868 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 16:11:00,868 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 16:11:00,869 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 16:11:00,869 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 16:11:00,870 INFO  L87              Difference]: Start difference. First operand 7361 states and 11069 transitions. Second operand  has 3 states, 3 states have (on average 555.6666666666666) internal successors, (1667), 3 states have internal predecessors, (1667), 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 16:11:07,750 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 16:11:07,751 INFO  L93              Difference]: Finished difference Result 18147 states and 28138 transitions.
[2022-01-10 16:11:07,751 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-10 16:11:07,752 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 555.6666666666666) internal successors, (1667), 3 states have internal predecessors, (1667), 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 1667
[2022-01-10 16:11:07,752 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 16:11:07,781 INFO  L225             Difference]: With dead ends: 18147
[2022-01-10 16:11:07,782 INFO  L226             Difference]: Without dead ends: 10788
[2022-01-10 16:11:07,794 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 16:11:07,795 INFO  L933         BasicCegarLoop]: 3466 mSDtfsCounter, 2273 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 4729 mSolverCounterSat, 2212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2273 SdHoareTripleChecker+Valid, 3713 SdHoareTripleChecker+Invalid, 6941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2212 IncrementalHoareTripleChecker+Valid, 4729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time
[2022-01-10 16:11:07,795 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [2273 Valid, 3713 Invalid, 6941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2212 Valid, 4729 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time]
[2022-01-10 16:11:07,808 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10788 states.
[2022-01-10 16:11:07,947 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10788 to 10782.
[2022-01-10 16:11:07,974 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10782 states, 10781 states have (on average 1.4245431778128188) internal successors, (15358), 10781 states have internal predecessors, (15358), 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 16:11:07,995 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10782 states to 10782 states and 15358 transitions.
[2022-01-10 16:11:07,996 INFO  L78                 Accepts]: Start accepts. Automaton has 10782 states and 15358 transitions. Word has length 1667
[2022-01-10 16:11:07,996 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 16:11:07,996 INFO  L470      AbstractCegarLoop]: Abstraction has 10782 states and 15358 transitions.
[2022-01-10 16:11:07,997 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 555.6666666666666) internal successors, (1667), 3 states have internal predecessors, (1667), 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 16:11:07,997 INFO  L276                IsEmpty]: Start isEmpty. Operand 10782 states and 15358 transitions.
[2022-01-10 16:11:08,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1689
[2022-01-10 16:11:08,030 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 16:11:08,031 INFO  L514         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 16:11:08,031 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-10 16:11:08,031 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 16:11:08,032 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 16:11:08,033 INFO  L85        PathProgramCache]: Analyzing trace with hash -1637521032, now seen corresponding path program 1 times
[2022-01-10 16:11:08,033 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 16:11:08,033 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499361393]
[2022-01-10 16:11:08,033 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 16:11:08,033 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 16:11:08,395 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 16:11:08,817 INFO  L134       CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 16:11:08,817 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 16:11:08,817 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499361393]
[2022-01-10 16:11:08,817 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499361393] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 16:11:08,817 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 16:11:08,817 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-10 16:11:08,818 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369479473]
[2022-01-10 16:11:08,818 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 16:11:08,819 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-10 16:11:08,819 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 16:11:08,820 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-10 16:11:08,820 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-10 16:11:08,820 INFO  L87              Difference]: Start difference. First operand 10782 states and 15358 transitions. Second operand  has 3 states, 3 states have (on average 562.6666666666666) internal successors, (1688), 2 states have internal predecessors, (1688), 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)