/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_SUM.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-11 02:10:30,133 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-11 02:10:30,134 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-11 02:10:30,162 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-11 02:10:30,162 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-11 02:10:30,163 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-11 02:10:30,164 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-11 02:10:30,165 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-11 02:10:30,166 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-11 02:10:30,169 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-11 02:10:30,172 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-11 02:10:30,173 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-11 02:10:30,183 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-11 02:10:30,183 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-11 02:10:30,184 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-11 02:10:30,184 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-11 02:10:30,185 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-11 02:10:30,186 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-11 02:10:30,187 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-11 02:10:30,188 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-11 02:10:30,191 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-11 02:10:30,199 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-11 02:10:30,200 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-11 02:10:30,207 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-11 02:10:30,207 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-11 02:10:30,207 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-11 02:10:30,207 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-11 02:10:30,208 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-11 02:10:30,208 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-11 02:10:30,208 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-11 02:10:30,209 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-11 02:10:30,209 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-11 02:10:30,210 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-11 02:10:30,210 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-11 02:10:30,211 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-11 02:10:30,211 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-11 02:10:30,211 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-11 02:10:30,212 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-11 02:10:30,212 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-11 02:10:30,215 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf
[2022-01-11 02:10:30,231 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-11 02:10:30,231 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-11 02:10:30,231 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-11 02:10:30,231 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-11 02:10:30,232 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-11 02:10:30,232 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-11 02:10:30,232 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-11 02:10:30,233 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-11 02:10:30,233 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-11 02:10:30,233 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-11 02:10:30,233 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-11 02:10:30,234 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-11 02:10:30,234 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-11 02:10:30,234 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-11 02:10:30,234 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-11 02:10:30,234 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-11 02:10:30,234 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-11 02:10:30,234 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-11 02:10:30,234 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-11 02:10:30,234 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-11 02:10:30,234 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-11 02:10:30,235 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:10:30,235 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-11 02:10:30,235 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-11 02:10:30,235 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-11 02:10:30,235 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-11 02:10:30,235 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-11 02:10:30,235 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-11 02:10:30,235 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-11 02:10:30,235 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-11 02:10:30,235 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-11 02:10:30,236 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-11 02:10:30,237 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-11 02:10:30,237 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_SUM
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-11 02:10:30,435 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-11 02:10:30,458 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-11 02:10:30,459 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-11 02:10:30,460 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-11 02:10:30,462 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-11 02:10:30,463 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c
[2022-01-11 02:10:30,517 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd158114/2b9c98bfc07c40c1979d5bfbab0af0c5/FLAG63bb22a8f
[2022-01-11 02:10:30,807 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-11 02:10:30,808 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c
[2022-01-11 02:10:30,814 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd158114/2b9c98bfc07c40c1979d5bfbab0af0c5/FLAG63bb22a8f
[2022-01-11 02:10:31,263 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfd158114/2b9c98bfc07c40c1979d5bfbab0af0c5
[2022-01-11 02:10:31,265 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-11 02:10:31,266 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-11 02:10:31,267 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-11 02:10:31,267 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-11 02:10:31,269 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-11 02:10:31,269 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:10:31" (1/1) ...
[2022-01-11 02:10:31,270 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a341ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:10:31, skipping insertion in model container
[2022-01-11 02:10:31,270 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:10:31" (1/1) ...
[2022-01-11 02:10:31,275 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-11 02:10:31,283 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-11 02:10:31,417 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c[403,416]
[2022-01-11 02:10:31,448 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:10:31,465 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-11 02:10:31,475 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c[403,416]
[2022-01-11 02:10:31,479 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:10:31,488 INFO  L208         MainTranslator]: Completed translation
[2022-01-11 02:10:31,488 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:10:31 WrapperNode
[2022-01-11 02:10:31,488 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-11 02:10:31,489 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-11 02:10:31,489 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-11 02:10:31,489 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-11 02:10:31,494 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:10:31" (1/1) ...
[2022-01-11 02:10:31,498 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:10:31" (1/1) ...
[2022-01-11 02:10:31,508 INFO  L137                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40
[2022-01-11 02:10:31,508 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-11 02:10:31,509 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-11 02:10:31,509 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-11 02:10:31,509 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-11 02:10:31,514 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:10:31" (1/1) ...
[2022-01-11 02:10:31,514 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:10:31" (1/1) ...
[2022-01-11 02:10:31,515 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:10:31" (1/1) ...
[2022-01-11 02:10:31,515 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:10:31" (1/1) ...
[2022-01-11 02:10:31,517 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:10:31" (1/1) ...
[2022-01-11 02:10:31,519 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:10:31" (1/1) ...
[2022-01-11 02:10:31,520 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:10:31" (1/1) ...
[2022-01-11 02:10:31,521 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-11 02:10:31,521 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-11 02:10:31,522 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-11 02:10:31,522 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-11 02:10:31,525 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:10:31" (1/1) ...
[2022-01-11 02:10:31,529 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:10:31,535 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:10:31,544 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)
[2022-01-11 02:10:31,550 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
[2022-01-11 02:10:31,566 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-11 02:10:31,566 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-11 02:10:31,566 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-11 02:10:31,566 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-11 02:10:31,602 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-11 02:10:31,603 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-11 02:10:31,672 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-11 02:10:31,675 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-11 02:10:31,676 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-11 02:10:31,677 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:10:31 BoogieIcfgContainer
[2022-01-11 02:10:31,677 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-11 02:10:31,677 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-11 02:10:31,677 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-11 02:10:31,678 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-11 02:10:31,680 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:10:31" (1/1) ...
[2022-01-11 02:10:31,713 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:10:31 BasicIcfg
[2022-01-11 02:10:31,714 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-11 02:10:31,715 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-11 02:10:31,715 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-11 02:10:31,717 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-11 02:10:31,717 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:10:31" (1/4) ...
[2022-01-11 02:10:31,717 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f79c312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:10:31, skipping insertion in model container
[2022-01-11 02:10:31,717 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:10:31" (2/4) ...
[2022-01-11 02:10:31,718 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f79c312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:10:31, skipping insertion in model container
[2022-01-11 02:10:31,718 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:10:31" (3/4) ...
[2022-01-11 02:10:31,718 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f79c312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:10:31, skipping insertion in model container
[2022-01-11 02:10:31,718 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:10:31" (4/4) ...
[2022-01-11 02:10:31,719 INFO  L111   eAbstractionObserver]: Analyzing ICFG sumt2.cTransformedIcfg
[2022-01-11 02:10:31,722 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-11 02:10:31,722 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-11 02:10:31,748 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-11 02:10:31,753 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
[2022-01-11 02:10:31,753 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-11 02:10:31,761 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:10:31,764 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-01-11 02:10:31,764 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:10:31,764 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:10:31,764 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:10:31,767 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:10:31,768 INFO  L85        PathProgramCache]: Analyzing trace with hash 1637351921, now seen corresponding path program 1 times
[2022-01-11 02:10:31,774 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:10:31,774 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190481616]
[2022-01-11 02:10:31,774 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:10:31,775 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:10:31,844 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:10:31,986 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:10:31,986 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:10:31,987 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190481616]
[2022-01-11 02:10:31,987 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190481616] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:10:31,987 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:10:31,987 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-01-11 02:10:31,988 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156288827]
[2022-01-11 02:10:31,989 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:10:31,991 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-01-11 02:10:31,992 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:10:32,019 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-01-11 02:10:32,021 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-01-11 02:10:32,022 INFO  L87              Difference]: Start difference. First operand  has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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)
[2022-01-11 02:10:32,094 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:10:32,095 INFO  L93              Difference]: Finished difference Result 36 states and 45 transitions.
[2022-01-11 02:10:32,096 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-01-11 02:10:32,097 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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
[2022-01-11 02:10:32,097 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:10:32,102 INFO  L225             Difference]: With dead ends: 36
[2022-01-11 02:10:32,102 INFO  L226             Difference]: Without dead ends: 12
[2022-01-11 02:10:32,104 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-01-11 02:10:32,108 INFO  L933         BasicCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-11 02:10:32,108 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 32 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-11 02:10:32,121 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2022-01-11 02:10:32,129 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2022-01-11 02:10:32,130 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:10:32,131 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions.
[2022-01-11 02:10:32,132 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7
[2022-01-11 02:10:32,132 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:10:32,132 INFO  L470      AbstractCegarLoop]: Abstraction has 12 states and 13 transitions.
[2022-01-11 02:10:32,132 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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)
[2022-01-11 02:10:32,133 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions.
[2022-01-11 02:10:32,133 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2022-01-11 02:10:32,133 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:10:32,133 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:10:32,133 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-11 02:10:32,134 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:10:32,140 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:10:32,141 INFO  L85        PathProgramCache]: Analyzing trace with hash 1325260336, now seen corresponding path program 1 times
[2022-01-11 02:10:32,141 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:10:32,141 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700384987]
[2022-01-11 02:10:32,141 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:10:32,142 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:10:32,167 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:10:32,348 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:10:32,348 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:10:32,348 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700384987]
[2022-01-11 02:10:32,348 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700384987] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-11 02:10:32,348 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956737270]
[2022-01-11 02:10:32,348 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:10:32,349 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:10:32,349 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:10:32,350 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)
[2022-01-11 02:10:32,396 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-11 02:10:32,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:10:32,434 INFO  L263         TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 16 conjunts are in the unsatisfiable core
[2022-01-11 02:10:32,442 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:10:32,806 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:10:32,807 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 02:10:32,998 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:10:32,999 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [956737270] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 02:10:32,999 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-11 02:10:32,999 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16
[2022-01-11 02:10:33,000 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783504344]
[2022-01-11 02:10:33,000 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-11 02:10:33,000 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-01-11 02:10:33,000 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:10:33,001 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-01-11 02:10:33,001 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240
[2022-01-11 02:10:33,001 INFO  L87              Difference]: Start difference. First operand 12 states and 13 transitions. Second operand  has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:10:33,129 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:10:33,130 INFO  L93              Difference]: Finished difference Result 28 states and 33 transitions.
[2022-01-11 02:10:33,131 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-01-11 02:10:33,131 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2022-01-11 02:10:33,131 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:10:33,132 INFO  L225             Difference]: With dead ends: 28
[2022-01-11 02:10:33,132 INFO  L226             Difference]: Without dead ends: 17
[2022-01-11 02:10:33,132 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306
[2022-01-11 02:10:33,133 INFO  L933         BasicCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-11 02:10:33,133 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 30 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-11 02:10:33,134 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2022-01-11 02:10:33,136 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2022-01-11 02:10:33,136 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:10:33,136 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions.
[2022-01-11 02:10:33,136 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10
[2022-01-11 02:10:33,136 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:10:33,136 INFO  L470      AbstractCegarLoop]: Abstraction has 17 states and 18 transitions.
[2022-01-11 02:10:33,137 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:10:33,137 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions.
[2022-01-11 02:10:33,137 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-11 02:10:33,137 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:10:33,137 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:10:33,168 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-11 02:10:33,347 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:10:33,348 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:10:33,348 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:10:33,348 INFO  L85        PathProgramCache]: Analyzing trace with hash -1860893295, now seen corresponding path program 1 times
[2022-01-11 02:10:33,348 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:10:33,348 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136084261]
[2022-01-11 02:10:33,349 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:10:33,349 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:10:33,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:10:33,688 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:10:33,688 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:10:33,689 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136084261]
[2022-01-11 02:10:33,689 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136084261] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-11 02:10:33,689 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116498287]
[2022-01-11 02:10:33,689 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:10:33,689 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:10:33,689 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:10:33,690 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)
[2022-01-11 02:10:33,713 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-11 02:10:33,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:10:33,741 INFO  L263         TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 28 conjunts are in the unsatisfiable core
[2022-01-11 02:10:33,743 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:10:34,716 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:10:34,717 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 02:10:35,509 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:10:35,509 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116498287] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 02:10:35,509 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-11 02:10:35,509 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 27
[2022-01-11 02:10:35,509 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391832512]
[2022-01-11 02:10:35,509 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-11 02:10:35,510 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-01-11 02:10:35,510 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:10:35,511 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-01-11 02:10:35,511 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702
[2022-01-11 02:10:35,511 INFO  L87              Difference]: Start difference. First operand 17 states and 18 transitions. Second operand  has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 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)
[2022-01-11 02:10:43,351 WARN  L228               SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 61 DAG size of output: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-11 02:10:44,361 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:10:44,361 INFO  L93              Difference]: Finished difference Result 37 states and 47 transitions.
[2022-01-11 02:10:44,362 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2022-01-11 02:10:44,362 INFO  L78                 Accepts]: Start accepts. Automaton has  has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 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 16
[2022-01-11 02:10:44,363 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:10:44,364 INFO  L225             Difference]: With dead ends: 37
[2022-01-11 02:10:44,364 INFO  L226             Difference]: Without dead ends: 32
[2022-01-11 02:10:44,364 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=213, Invalid=843, Unknown=0, NotChecked=0, Total=1056
[2022-01-11 02:10:44,365 INFO  L933         BasicCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-11 02:10:44,365 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 36 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 93 Invalid, 0 Unknown, 23 Unchecked, 0.3s Time]
[2022-01-11 02:10:44,366 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2022-01-11 02:10:44,371 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2022-01-11 02:10:44,371 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 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)
[2022-01-11 02:10:44,371 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions.
[2022-01-11 02:10:44,371 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 16
[2022-01-11 02:10:44,372 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:10:44,372 INFO  L470      AbstractCegarLoop]: Abstraction has 32 states and 39 transitions.
[2022-01-11 02:10:44,372 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 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)
[2022-01-11 02:10:44,372 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions.
[2022-01-11 02:10:44,372 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-11 02:10:44,372 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:10:44,373 INFO  L514         BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:10:44,406 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-11 02:10:44,573 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2022-01-11 02:10:44,573 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:10:44,574 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:10:44,574 INFO  L85        PathProgramCache]: Analyzing trace with hash -1832264144, now seen corresponding path program 2 times
[2022-01-11 02:10:44,574 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:10:44,574 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758340260]
[2022-01-11 02:10:44,574 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:10:44,574 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:10:44,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:10:44,629 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:10:44,629 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:10:44,629 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758340260]
[2022-01-11 02:10:44,629 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758340260] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-11 02:10:44,629 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593710893]
[2022-01-11 02:10:44,629 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-01-11 02:10:44,630 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:10:44,630 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:10:44,640 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-11 02:10:44,641 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-01-11 02:10:44,681 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-01-11 02:10:44,681 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-11 02:10:44,682 INFO  L263         TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-01-11 02:10:44,683 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:10:44,712 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:10:44,712 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-01-11 02:10:49,044 WARN  L860   $PredicateComparison]: unable to prove that (let ((.cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~l~0#1Int| 1) 4294967296))) (<= .cse0 (* (div .cse0 2) 2))) is different from true
[2022-01-11 02:11:08,376 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 5 not checked.
[2022-01-11 02:11:08,376 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [593710893] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-11 02:11:08,376 INFO  L186   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-01-11 02:11:08,377 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9
[2022-01-11 02:11:08,377 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788687253]
[2022-01-11 02:11:08,377 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-01-11 02:11:08,377 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-01-11 02:11:08,377 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:11:08,377 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-01-11 02:11:08,378 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=37, Unknown=3, NotChecked=12, Total=72
[2022-01-11 02:11:08,378 INFO  L87              Difference]: Start difference. First operand 32 states and 39 transitions. Second operand  has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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)
[2022-01-11 02:11:10,392 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 02:11:14,715 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 02:11:25,532 WARN  L228               SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-01-11 02:11:27,536 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 02:11:29,650 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 02:11:31,813 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 02:11:33,978 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 02:11:36,143 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 02:11:38,315 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 02:11:40,472 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 02:11:42,630 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 02:11:44,789 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 02:11:44,957 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:11:44,957 INFO  L93              Difference]: Finished difference Result 51 states and 62 transitions.
[2022-01-11 02:11:44,957 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-01-11 02:11:44,958 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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 16
[2022-01-11 02:11:44,958 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:11:44,958 INFO  L225             Difference]: With dead ends: 51
[2022-01-11 02:11:44,958 INFO  L226             Difference]: Without dead ends: 33
[2022-01-11 02:11:44,959 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=24, Invalid=47, Unknown=5, NotChecked=14, Total=90
[2022-01-11 02:11:44,961 INFO  L933         BasicCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 8 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time
[2022-01-11 02:11:44,961 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 28 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 64 Invalid, 11 Unknown, 21 Unchecked, 23.8s Time]
[2022-01-11 02:11:44,962 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2022-01-11 02:11:44,965 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29.
[2022-01-11 02:11:44,965 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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)
[2022-01-11 02:11:44,965 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions.
[2022-01-11 02:11:44,965 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16
[2022-01-11 02:11:44,966 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:11:44,966 INFO  L470      AbstractCegarLoop]: Abstraction has 29 states and 31 transitions.
[2022-01-11 02:11:44,966 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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)
[2022-01-11 02:11:44,966 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions.
[2022-01-11 02:11:44,966 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-01-11 02:11:44,966 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:11:44,966 INFO  L514         BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:11:44,985 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-01-11 02:11:45,167 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:11:45,167 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 02:11:45,167 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:11:45,168 INFO  L85        PathProgramCache]: Analyzing trace with hash -1782870225, now seen corresponding path program 3 times
[2022-01-11 02:11:45,168 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:11:45,168 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075998105]
[2022-01-11 02:11:45,168 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:11:45,168 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:11:45,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:11:45,578 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-01-11 02:11:45,579 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:11:45,579 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075998105]
[2022-01-11 02:11:45,579 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075998105] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-11 02:11:45,579 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565236889]
[2022-01-11 02:11:45,579 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-01-11 02:11:45,579 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:11:45,579 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:11:45,588 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-11 02:11:45,592 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-01-11 02:11:45,674 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2022-01-11 02:11:45,674 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-01-11 02:11:45,675 INFO  L263         TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 38 conjunts are in the unsatisfiable core
[2022-01-11 02:11:45,676 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-01-11 02:11:48,262 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:11:48,262 INFO  L328         TraceCheckSpWp]: Computing backward predicates...