/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/loop-invgen/apache-escape-absolute.i


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-11 02:02:09,760 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-11 02:02:09,761 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-11 02:02:09,818 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-11 02:02:09,818 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-11 02:02:09,819 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-11 02:02:09,821 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-11 02:02:09,826 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-11 02:02:09,827 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-11 02:02:09,832 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2022-01-11 02:02:09,834 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-11 02:02:09,834 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-11 02:02:09,836 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-11 02:02:09,837 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-11 02:02:09,839 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-11 02:02:09,839 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-11 02:02:09,840 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-11 02:02:09,843 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-11 02:02:09,846 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-11 02:02:09,847 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-11 02:02:09,848 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-11 02:02:09,849 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-11 02:02:09,850 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-11 02:02:09,853 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-11 02:02:09,853 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-11 02:02:09,853 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-11 02:02:09,853 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-11 02:02:09,854 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-11 02:02:09,854 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-11 02:02:09,854 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-11 02:02:09,855 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-11 02:02:09,855 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-11 02:02:09,855 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-11 02:02:09,856 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-11 02:02:09,856 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-11 02:02:09,856 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-11 02:02:09,857 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-11 02:02:09,857 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-11 02:02:09,857 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-11 02:02:09,858 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-11 02:02:09,862 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 02:02:09,885 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-11 02:02:09,885 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-11 02:02:09,885 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-11 02:02:09,885 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-11 02:02:09,886 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-11 02:02:09,886 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-11 02:02:09,886 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-11 02:02:09,886 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-11 02:02:09,886 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-11 02:02:09,886 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-11 02:02:09,887 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-11 02:02:09,887 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-11 02:02:09,887 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-11 02:02:09,887 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-11 02:02:09,887 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-11 02:02:09,888 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-11 02:02:09,888 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-11 02:02:09,888 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-11 02:02:09,888 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-11 02:02:09,888 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-11 02:02:09,888 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-11 02:02:09,889 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:02:09,889 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-11 02:02:09,889 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-11 02:02:09,889 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-11 02:02:09,889 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-11 02:02:09,889 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-11 02:02:09,889 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-11 02:02:09,889 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-11 02:02:09,890 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-11 02:02:09,890 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-11 02:02:09,890 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-11 02:02:09,890 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-11 02:02:09,890 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-11 02:02:10,115 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-11 02:02:10,135 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-11 02:02:10,137 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-11 02:02:10,137 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-11 02:02:10,138 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-11 02:02:10,139 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i
[2022-01-11 02:02:10,182 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/039b08c1a/0d6ab15b6d5f4aeb88c7dd3c6be220e3/FLAGaba008458
[2022-01-11 02:02:10,547 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-11 02:02:10,547 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i
[2022-01-11 02:02:10,555 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/039b08c1a/0d6ab15b6d5f4aeb88c7dd3c6be220e3/FLAGaba008458
[2022-01-11 02:02:10,978 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/039b08c1a/0d6ab15b6d5f4aeb88c7dd3c6be220e3
[2022-01-11 02:02:10,980 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-11 02:02:10,983 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-11 02:02:10,985 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-11 02:02:10,985 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-11 02:02:10,987 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-11 02:02:10,988 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:02:10" (1/1) ...
[2022-01-11 02:02:10,989 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3ace82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:02:10, skipping insertion in model container
[2022-01-11 02:02:10,989 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:02:10" (1/1) ...
[2022-01-11 02:02:10,993 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-11 02:02:11,005 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-11 02:02:11,123 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i[893,906]
[2022-01-11 02:02:11,151 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:02:11,159 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-11 02:02:11,171 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i[893,906]
[2022-01-11 02:02:11,189 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-11 02:02:11,199 INFO  L208         MainTranslator]: Completed translation
[2022-01-11 02:02:11,199 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:02:11 WrapperNode
[2022-01-11 02:02:11,199 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-11 02:02:11,200 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-11 02:02:11,200 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-11 02:02:11,201 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-11 02:02:11,206 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:02:11" (1/1) ...
[2022-01-11 02:02:11,220 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:02:11" (1/1) ...
[2022-01-11 02:02:11,239 INFO  L137                Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 207
[2022-01-11 02:02:11,239 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-11 02:02:11,240 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-11 02:02:11,240 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-11 02:02:11,240 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-11 02:02:11,245 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:02:11" (1/1) ...
[2022-01-11 02:02:11,245 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:02:11" (1/1) ...
[2022-01-11 02:02:11,256 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:02:11" (1/1) ...
[2022-01-11 02:02:11,256 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:02:11" (1/1) ...
[2022-01-11 02:02:11,265 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:02:11" (1/1) ...
[2022-01-11 02:02:11,268 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:02:11" (1/1) ...
[2022-01-11 02:02:11,269 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:02:11" (1/1) ...
[2022-01-11 02:02:11,271 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-11 02:02:11,271 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-11 02:02:11,271 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-11 02:02:11,271 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-11 02:02:11,280 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:02:11" (1/1) ...
[2022-01-11 02:02:11,285 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-11 02:02:11,293 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:02:11,302 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 02:02:11,304 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 02:02:11,325 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-11 02:02:11,325 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-11 02:02:11,325 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-11 02:02:11,325 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-11 02:02:11,365 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-11 02:02:11,366 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-11 02:02:11,608 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-11 02:02:11,613 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-11 02:02:11,613 INFO  L299             CfgBuilder]: Removed 2 assume(true) statements.
[2022-01-11 02:02:11,614 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:02:11 BoogieIcfgContainer
[2022-01-11 02:02:11,614 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-11 02:02:11,615 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-11 02:02:11,615 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-11 02:02:11,622 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-11 02:02:11,624 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:02:11" (1/1) ...
[2022-01-11 02:02:11,717 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:02:11 BasicIcfg
[2022-01-11 02:02:11,717 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-11 02:02:11,718 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-11 02:02:11,718 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-11 02:02:11,720 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-11 02:02:11,720 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:02:10" (1/4) ...
[2022-01-11 02:02:11,720 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e15eb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:02:11, skipping insertion in model container
[2022-01-11 02:02:11,720 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:02:11" (2/4) ...
[2022-01-11 02:02:11,721 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e15eb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:02:11, skipping insertion in model container
[2022-01-11 02:02:11,721 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:02:11" (3/4) ...
[2022-01-11 02:02:11,721 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e15eb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:02:11, skipping insertion in model container
[2022-01-11 02:02:11,721 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:02:11" (4/4) ...
[2022-01-11 02:02:11,721 INFO  L111   eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.iTransformedIcfg
[2022-01-11 02:02:11,725 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-11 02:02:11,725 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations.
[2022-01-11 02:02:11,751 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-11 02:02:11,756 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 02:02:11,756 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 18 error locations.
[2022-01-11 02:02:11,765 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 95 states, 76 states have (on average 1.6973684210526316) internal successors, (129), 94 states have internal predecessors, (129), 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 02:02:11,767 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-01-11 02:02:11,768 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:02:11,768 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:02:11,768 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] ===
[2022-01-11 02:02:11,771 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:02:11,771 INFO  L85        PathProgramCache]: Analyzing trace with hash 517342936, now seen corresponding path program 1 times
[2022-01-11 02:02:11,776 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:02:11,777 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920718425]
[2022-01-11 02:02:11,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:02:11,777 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:02:11,862 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:02:12,068 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 02:02:12,069 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:02:12,069 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920718425]
[2022-01-11 02:02:12,069 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920718425] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:02:12,069 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:02:12,070 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-11 02:02:12,071 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449787241]
[2022-01-11 02:02:12,071 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:02:12,073 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-11 02:02:12,074 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:02:12,103 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-11 02:02:12,104 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2022-01-11 02:02:12,105 INFO  L87              Difference]: Start difference. First operand  has 95 states, 76 states have (on average 1.6973684210526316) internal successors, (129), 94 states have internal predecessors, (129), 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 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:02:12,441 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:02:12,441 INFO  L93              Difference]: Finished difference Result 197 states and 252 transitions.
[2022-01-11 02:02:12,443 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-01-11 02:02:12,444 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11
[2022-01-11 02:02:12,444 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:02:12,449 INFO  L225             Difference]: With dead ends: 197
[2022-01-11 02:02:12,449 INFO  L226             Difference]: Without dead ends: 89
[2022-01-11 02:02:12,451 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72
[2022-01-11 02:02:12,453 INFO  L933         BasicCegarLoop]: 100 mSDtfsCounter, 170 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-11 02:02:12,454 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 204 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-11 02:02:12,467 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2022-01-11 02:02:12,495 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89.
[2022-01-11 02:02:12,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 89 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 88 states have internal predecessors, (92), 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 02:02:12,503 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions.
[2022-01-11 02:02:12,504 INFO  L78                 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 11
[2022-01-11 02:02:12,504 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:02:12,505 INFO  L470      AbstractCegarLoop]: Abstraction has 89 states and 92 transitions.
[2022-01-11 02:02:12,505 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-11 02:02:12,505 INFO  L276                IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions.
[2022-01-11 02:02:12,505 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-01-11 02:02:12,506 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:02:12,506 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:02:12,506 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-11 02:02:12,507 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] ===
[2022-01-11 02:02:12,513 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:02:12,513 INFO  L85        PathProgramCache]: Analyzing trace with hash -1049602725, now seen corresponding path program 1 times
[2022-01-11 02:02:12,513 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:02:12,514 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501936805]
[2022-01-11 02:02:12,514 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:02:12,514 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:02:12,553 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:02:12,633 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 02:02:12,634 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:02:12,634 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501936805]
[2022-01-11 02:02:12,634 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501936805] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:02:12,634 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:02:12,634 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-11 02:02:12,634 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265749522]
[2022-01-11 02:02:12,634 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:02:12,635 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-11 02:02:12,635 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:02:12,636 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-11 02:02:12,636 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2022-01-11 02:02:12,636 INFO  L87              Difference]: Start difference. First operand 89 states and 92 transitions. Second operand  has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 02:02:12,809 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:02:12,809 INFO  L93              Difference]: Finished difference Result 118 states and 123 transitions.
[2022-01-11 02:02:12,810 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-01-11 02:02:12,810 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2022-01-11 02:02:12,810 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:02:12,811 INFO  L225             Difference]: With dead ends: 118
[2022-01-11 02:02:12,811 INFO  L226             Difference]: Without dead ends: 116
[2022-01-11 02:02:12,812 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72
[2022-01-11 02:02:12,813 INFO  L933         BasicCegarLoop]: 74 mSDtfsCounter, 181 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-11 02:02:12,813 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 196 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-11 02:02:12,814 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2022-01-11 02:02:12,824 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 87.
[2022-01-11 02:02:12,824 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 87 states, 71 states have (on average 1.267605633802817) internal successors, (90), 86 states have internal predecessors, (90), 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 02:02:12,825 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions.
[2022-01-11 02:02:12,825 INFO  L78                 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 13
[2022-01-11 02:02:12,825 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:02:12,825 INFO  L470      AbstractCegarLoop]: Abstraction has 87 states and 90 transitions.
[2022-01-11 02:02:12,825 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 02:02:12,825 INFO  L276                IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions.
[2022-01-11 02:02:12,826 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-01-11 02:02:12,826 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:02:12,826 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:02:12,826 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-11 02:02:12,826 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] ===
[2022-01-11 02:02:12,826 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:02:12,827 INFO  L85        PathProgramCache]: Analyzing trace with hash -1351554736, now seen corresponding path program 1 times
[2022-01-11 02:02:12,827 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:02:12,827 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898160380]
[2022-01-11 02:02:12,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:02:12,827 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:02:12,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:02:13,106 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 02:02:13,107 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:02:13,107 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898160380]
[2022-01-11 02:02:13,108 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898160380] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:02:13,108 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:02:13,108 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2022-01-11 02:02:13,108 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582034049]
[2022-01-11 02:02:13,109 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:02:13,109 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-01-11 02:02:13,109 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:02:13,109 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-01-11 02:02:13,110 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-01-11 02:02:13,110 INFO  L87              Difference]: Start difference. First operand 87 states and 90 transitions. Second operand  has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 02:02:13,607 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:02:13,607 INFO  L93              Difference]: Finished difference Result 116 states and 121 transitions.
[2022-01-11 02:02:13,607 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-01-11 02:02:13,607 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 02:02:13,607 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:02:13,608 INFO  L225             Difference]: With dead ends: 116
[2022-01-11 02:02:13,608 INFO  L226             Difference]: Without dead ends: 108
[2022-01-11 02:02:13,608 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182
[2022-01-11 02:02:13,609 INFO  L933         BasicCegarLoop]: 64 mSDtfsCounter, 314 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-01-11 02:02:13,610 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 178 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-01-11 02:02:13,610 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2022-01-11 02:02:13,629 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 95.
[2022-01-11 02:02:13,629 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 95 states, 80 states have (on average 1.2625) internal successors, (101), 94 states have internal predecessors, (101), 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 02:02:13,630 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions.
[2022-01-11 02:02:13,630 INFO  L78                 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 16
[2022-01-11 02:02:13,630 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:02:13,631 INFO  L470      AbstractCegarLoop]: Abstraction has 95 states and 101 transitions.
[2022-01-11 02:02:13,631 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 02:02:13,631 INFO  L276                IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions.
[2022-01-11 02:02:13,631 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2022-01-11 02:02:13,631 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:02:13,631 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-11 02:02:13,632 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-11 02:02:13,632 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] ===
[2022-01-11 02:02:13,632 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:02:13,633 INFO  L85        PathProgramCache]: Analyzing trace with hash -1763935405, now seen corresponding path program 1 times
[2022-01-11 02:02:13,633 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:02:13,633 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571076203]
[2022-01-11 02:02:13,633 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:02:13,633 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:02:13,647 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:02:13,726 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 02:02:13,727 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:02:13,727 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571076203]
[2022-01-11 02:02:13,727 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571076203] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-11 02:02:13,727 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-11 02:02:13,727 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-01-11 02:02:13,727 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296137301]
[2022-01-11 02:02:13,728 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-11 02:02:13,728 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-01-11 02:02:13,728 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-11 02:02:13,728 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-01-11 02:02:13,728 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2022-01-11 02:02:13,729 INFO  L87              Difference]: Start difference. First operand 95 states and 101 transitions. Second operand  has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 02:02:13,860 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-11 02:02:13,860 INFO  L93              Difference]: Finished difference Result 115 states and 121 transitions.
[2022-01-11 02:02:13,860 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-01-11 02:02:13,860 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) Word has length 18
[2022-01-11 02:02:13,860 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-11 02:02:13,862 INFO  L225             Difference]: With dead ends: 115
[2022-01-11 02:02:13,862 INFO  L226             Difference]: Without dead ends: 109
[2022-01-11 02:02:13,862 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72
[2022-01-11 02:02:13,869 INFO  L933         BasicCegarLoop]: 68 mSDtfsCounter, 138 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-11 02:02:13,870 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 188 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-11 02:02:13,871 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2022-01-11 02:02:13,892 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99.
[2022-01-11 02:02:13,892 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 99 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 98 states have internal predecessors, (105), 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 02:02:13,893 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions.
[2022-01-11 02:02:13,893 INFO  L78                 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 18
[2022-01-11 02:02:13,893 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-11 02:02:13,893 INFO  L470      AbstractCegarLoop]: Abstraction has 99 states and 105 transitions.
[2022-01-11 02:02:13,893 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 02:02:13,893 INFO  L276                IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions.
[2022-01-11 02:02:13,894 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2022-01-11 02:02:13,894 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-11 02:02:13,894 INFO  L514         BasicCegarLoop]: trace histogram [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]
[2022-01-11 02:02:13,894 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-01-11 02:02:13,894 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 15 more)] ===
[2022-01-11 02:02:13,895 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-11 02:02:13,895 INFO  L85        PathProgramCache]: Analyzing trace with hash -126212597, now seen corresponding path program 1 times
[2022-01-11 02:02:13,895 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-11 02:02:13,896 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61935298]
[2022-01-11 02:02:13,896 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:02:13,896 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-11 02:02:13,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:02:14,363 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-11 02:02:14,363 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-11 02:02:14,363 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61935298]
[2022-01-11 02:02:14,363 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61935298] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-11 02:02:14,363 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654992581]
[2022-01-11 02:02:14,363 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-11 02:02:14,364 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-11 02:02:14,364 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-11 02:02:14,365 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 02:02:14,376 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 02:02:14,438 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-11 02:02:14,440 INFO  L263         TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 17 conjunts are in the unsatisfiable core
[2022-01-11 02:02:14,443 INFO  L286         TraceCheckSpWp]: Computing forward predicates...