/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/eca-rers2012/Problem10_label48.c


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-11 04:12:11,496 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-11 04:12:11,497 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-11 04:12:11,549 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-11 04:12:11,550 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-11 04:12:11,550 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-11 04:12:11,551 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-11 04:12:11,553 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-11 04:12:11,554 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-11 04:12:11,554 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-11 04:12:11,555 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-01-11 04:12:11,556 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-11 04:12:11,556 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-11 04:12:11,557 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-11 04:12:11,557 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-11 04:12:11,558 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-11 04:12:11,559 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-11 04:12:11,566 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-11 04:12:11,569 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-11 04:12:11,574 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-11 04:12:11,576 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-11 04:12:11,580 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-11 04:12:11,582 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-11 04:12:11,582 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-11 04:12:11,586 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-11 04:12:11,586 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-11 04:12:11,586 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-11 04:12:11,587 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-11 04:12:11,587 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-11 04:12:11,588 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-11 04:12:11,588 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-11 04:12:11,588 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-11 04:12:11,589 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-11 04:12:11,589 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-11 04:12:11,590 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-11 04:12:11,590 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-11 04:12:11,590 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-11 04:12:11,590 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-11 04:12:11,590 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-11 04:12:11,591 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-11 04:12:11,591 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-11 04:12:11,595 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 04:12:11,618 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-11 04:12:11,618 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-11 04:12:11,618 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-11 04:12:11,618 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-11 04:12:11,619 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-11 04:12:11,619 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-11 04:12:11,619 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-11 04:12:11,619 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-11 04:12:11,619 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-11 04:12:11,619 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-11 04:12:11,619 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-11 04:12:11,619 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-11 04:12:11,620 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-11 04:12:11,620 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-11 04:12:11,620 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-11 04:12:11,620 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-11 04:12:11,620 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-11 04:12:11,620 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-11 04:12:11,620 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-11 04:12:11,620 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-11 04:12:11,620 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-11 04:12:11,620 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 04:12:11,620 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-11 04:12:11,620 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-11 04:12:11,621 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-11 04:12:11,621 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-11 04:12:11,621 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-11 04:12:11,621 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-11 04:12:11,621 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-11 04:12:11,621 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-11 04:12:11,621 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-11 04:12:11,621 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-11 04:12:11,622 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-11 04:12:11,622 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-11 04:12:11,781 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-11 04:12:11,798 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-11 04:12:11,800 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-11 04:12:11,801 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-11 04:12:11,801 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-11 04:12:11,802 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label48.c
[2022-01-11 04:12:11,860 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b69ffa9d/79789ed8dd844f79991c2e2ccd537100/FLAGe5675a6fe
[2022-01-11 04:12:12,245 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-11 04:12:12,245 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label48.c
[2022-01-11 04:12:12,253 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b69ffa9d/79789ed8dd844f79991c2e2ccd537100/FLAGe5675a6fe
[2022-01-11 04:12:12,659 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b69ffa9d/79789ed8dd844f79991c2e2ccd537100
[2022-01-11 04:12:12,661 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-11 04:12:12,662 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-11 04:12:12,663 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-11 04:12:12,663 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-11 04:12:12,665 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-11 04:12:12,665 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 04:12:12" (1/1) ...
[2022-01-11 04:12:12,666 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4114528c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:12, skipping insertion in model container
[2022-01-11 04:12:12,666 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 04:12:12" (1/1) ...
[2022-01-11 04:12:12,676 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-11 04:12:12,702 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-11 04:12:12,846 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/Problem10_label48.c[1104,1117]
[2022-01-11 04:12:12,968 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 04:12:12,975 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-11 04:12:12,987 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/Problem10_label48.c[1104,1117]
[2022-01-11 04:12:13,061 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 04:12:13,070 INFO  L208         MainTranslator]: Completed translation
[2022-01-11 04:12:13,070 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13 WrapperNode
[2022-01-11 04:12:13,071 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-11 04:12:13,071 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-11 04:12:13,071 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-11 04:12:13,071 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-11 04:12:13,076 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ...
[2022-01-11 04:12:13,101 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ...
[2022-01-11 04:12:13,144 INFO  L137                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 595
[2022-01-11 04:12:13,144 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-11 04:12:13,145 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-11 04:12:13,145 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-11 04:12:13,145 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-11 04:12:13,153 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ...
[2022-01-11 04:12:13,153 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ...
[2022-01-11 04:12:13,157 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ...
[2022-01-11 04:12:13,157 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ...
[2022-01-11 04:12:13,188 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ...
[2022-01-11 04:12:13,206 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ...
[2022-01-11 04:12:13,211 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ...
[2022-01-11 04:12:13,217 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-11 04:12:13,218 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-11 04:12:13,218 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-11 04:12:13,218 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-11 04:12:13,229 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (1/1) ...
[2022-01-11 04:12:13,234 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 04:12:13,241 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 04:12:13,249 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 04:12:13,256 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 04:12:13,272 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-11 04:12:13,272 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-11 04:12:13,272 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-11 04:12:13,272 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-11 04:12:13,312 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-11 04:12:13,313 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-11 04:12:14,918 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-11 04:12:14,923 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-11 04:12:14,924 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2022-01-11 04:12:14,925 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 04:12:14 BoogieIcfgContainer
[2022-01-11 04:12:14,925 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-11 04:12:14,926 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-11 04:12:14,926 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-11 04:12:14,926 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-11 04:12:14,928 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 04:12:14" (1/1) ...
[2022-01-11 04:12:15,169 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 04:12:15 BasicIcfg
[2022-01-11 04:12:15,169 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-11 04:12:15,172 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-11 04:12:15,172 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-11 04:12:15,174 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-11 04:12:15,175 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 04:12:12" (1/4) ...
[2022-01-11 04:12:15,175 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c3f8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 04:12:15, skipping insertion in model container
[2022-01-11 04:12:15,175 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 04:12:13" (2/4) ...
[2022-01-11 04:12:15,176 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c3f8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 04:12:15, skipping insertion in model container
[2022-01-11 04:12:15,176 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 04:12:14" (3/4) ...
[2022-01-11 04:12:15,176 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c3f8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 04:12:15, skipping insertion in model container
[2022-01-11 04:12:15,176 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 04:12:15" (4/4) ...
[2022-01-11 04:12:15,177 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem10_label48.cTransformedIcfg
[2022-01-11 04:12:15,180 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-11 04:12:15,181 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-11 04:12:15,233 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-11 04:12:15,239 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 04:12:15,239 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-11 04:12:15,253 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 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 04:12:15,257 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-01-11 04:12:15,257 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 04:12:15,257 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-01-11 04:12:15,258 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 04:12:15,261 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 04:12:15,261 INFO  L85        PathProgramCache]: Analyzing trace with hash 104943519, now seen corresponding path program 1 times
[2022-01-11 04:12:15,266 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 04:12:15,267 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052980511]
[2022-01-11 04:12:15,267 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 04:12:15,268 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 04:12:15,356 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 04:12:15,426 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 04:12:15,426 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 04:12:15,426 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052980511]
[2022-01-11 04:12:15,427 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052980511] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 04:12:15,427 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 04:12:15,428 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-11 04:12:15,429 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968547414]
[2022-01-11 04:12:15,430 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 04:12:15,433 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-11 04:12:15,433 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 04:12:15,457 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-11 04:12:15,458 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-11 04:12:15,461 INFO  L87              Difference]: Start difference. First operand  has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 04:12:17,686 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 04:12:19,870 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:12:22,022 WARN  L534   Checker$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 04:12:24,152 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:12:26,268 WARN  L534   Checker$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 04:12:28,442 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:12:30,607 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:12:32,763 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:12:34,912 WARN  L534   Checker$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 04:12:37,083 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:12:39,227 WARN  L534   Checker$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 04:12:41,394 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:12:43,512 WARN  L534   Checker$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 04:12:45,675 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:12:47,831 WARN  L534   Checker$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 04:12:49,983 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:12:52,188 WARN  L534   Checker$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 04:12:54,350 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:12:56,466 WARN  L534   Checker$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 04:12:58,622 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:13:00,833 WARN  L534   Checker$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 04:13:02,998 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:13:05,182 WARN  L534   Checker$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 04:13:07,354 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:13:09,486 WARN  L534   Checker$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 04:13:11,622 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:13:13,806 WARN  L534   Checker$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 04:13:15,973 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:13:18,109 WARN  L534   Checker$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 04:13:20,278 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:13:22,458 WARN  L534   Checker$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 04:13:24,644 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:13:26,823 WARN  L534   Checker$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 04:13:29,047 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-11 04:13:31,195 WARN  L534   Checker$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 04:13:31,563 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 04:13:31,563 INFO  L93              Difference]: Finished difference Result 552 states and 966 transitions.
[2022-01-11 04:13:31,565 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-01-11 04:13:31,566 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7
[2022-01-11 04:13:31,566 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 04:13:31,576 INFO  L225             Difference]: With dead ends: 552
[2022-01-11 04:13:31,576 INFO  L226             Difference]: Without dead ends: 282
[2022-01-11 04:13:31,578 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
[2022-01-11 04:13:31,580 INFO  L933         BasicCegarLoop]: 69 mSDtfsCounter, 165 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 105 mSolverCounterUnsat, 35 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 35 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.0s IncrementalHoareTripleChecker+Time
[2022-01-11 04:13:31,581 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 76 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 378 Invalid, 35 Unknown, 0 Unchecked, 76.0s Time]
[2022-01-11 04:13:31,609 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 282 states.
[2022-01-11 04:13:31,654 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282.
[2022-01-11 04:13:31,655 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 282 states, 281 states have (on average 1.5373665480427046) internal successors, (432), 281 states have internal predecessors, (432), 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 04:13:31,655 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 432 transitions.
[2022-01-11 04:13:31,656 INFO  L78                 Accepts]: Start accepts. Automaton has 282 states and 432 transitions. Word has length 7
[2022-01-11 04:13:31,656 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 04:13:31,657 INFO  L470      AbstractCegarLoop]: Abstraction has 282 states and 432 transitions.
[2022-01-11 04:13:31,657 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 04:13:31,657 INFO  L276                IsEmpty]: Start isEmpty. Operand 282 states and 432 transitions.
[2022-01-11 04:13:31,658 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2022-01-11 04:13:31,658 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 04:13:31,658 INFO  L514         BasicCegarLoop]: trace histogram [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]
[2022-01-11 04:13:31,659 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-11 04:13:31,659 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-11 04:13:31,664 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 04:13:31,664 INFO  L85        PathProgramCache]: Analyzing trace with hash 165742560, now seen corresponding path program 1 times
[2022-01-11 04:13:31,664 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 04:13:31,664 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327183256]
[2022-01-11 04:13:31,664 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 04:13:31,665 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 04:13:31,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 04:13:31,887 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-01-11 04:13:31,888 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 04:13:31,892 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327183256]
[2022-01-11 04:13:31,893 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327183256] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 04:13:31,893 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 04:13:31,893 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-01-11 04:13:31,893 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869669570]
[2022-01-11 04:13:31,893 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 04:13:31,894 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-11 04:13:31,894 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 04:13:31,895 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-11 04:13:31,895 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-11 04:13:31,895 INFO  L87              Difference]: Start difference. First operand 282 states and 432 transitions. Second operand  has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 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 04:13:34,006 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 []