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


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


This is Ultimate 0.2.2-dev-a10ec3b
[2022-01-10 20:15:29,338 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-01-10 20:15:29,340 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-10 20:15:29,392 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-10 20:15:29,392 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2022-01-10 20:15:29,394 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2022-01-10 20:15:29,399 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-10 20:15:29,401 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-10 20:15:29,402 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-10 20:15:29,402 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-10 20:15:29,403 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-10 20:15:29,404 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-10 20:15:29,405 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-10 20:15:29,406 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-10 20:15:29,407 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-10 20:15:29,408 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-01-10 20:15:29,408 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-10 20:15:29,410 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-10 20:15:29,410 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-10 20:15:29,410 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-10 20:15:29,411 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-10 20:15:29,411 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-10 20:15:29,412 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-10 20:15:29,412 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-10 20:15:29,413 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-10 20:15:29,413 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-10 20:15:29,413 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-10 20:15:29,414 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-10 20:15:29,414 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-10 20:15:29,415 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2022-01-10 20:15:29,415 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-01-10 20:15:29,416 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-01-10 20:15:29,417 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf
[2022-01-10 20:15:29,431 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-01-10 20:15:29,432 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-10 20:15:29,432 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-01-10 20:15:29,432 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-01-10 20:15:29,433 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-01-10 20:15:29,433 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-01-10 20:15:29,433 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-01-10 20:15:29,433 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-10 20:15:29,433 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-01-10 20:15:29,433 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-01-10 20:15:29,433 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-01-10 20:15:29,434 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-10 20:15:29,434 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-01-10 20:15:29,434 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-01-10 20:15:29,434 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2022-01-10 20:15:29,434 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2022-01-10 20:15:29,434 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-01-10 20:15:29,434 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-01-10 20:15:29,434 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-10 20:15:29,435 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-01-10 20:15:29,435 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-01-10 20:15:29,435 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:15:29,435 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-10 20:15:29,435 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-01-10 20:15:29,435 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-01-10 20:15:29,435 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-01-10 20:15:29,435 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-01-10 20:15:29,436 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-01-10 20:15:29,436 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2022-01-10 20:15:29,436 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-01-10 20:15:29,436 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-01-10 20:15:29,436 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-01-10 20:15:29,437 INFO  L136        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-10 20:15:29,437 INFO  L138        SettingsManager]:  * TransformationType=BV_TO_INT_NONE
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-10 20:15:29,588 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-10 20:15:29,606 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-10 20:15:29,608 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-10 20:15:29,608 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-01-10 20:15:29,612 INFO  L275        PluginConnector]: CDTParser initialized
[2022-01-10 20:15:29,613 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c
[2022-01-10 20:15:29,654 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8930de17f/4087cb06a77546688445dc41805f7e5b/FLAG5bf655bbc
[2022-01-10 20:15:30,067 INFO  L306              CDTParser]: Found 1 translation units.
[2022-01-10 20:15:30,068 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c
[2022-01-10 20:15:30,079 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8930de17f/4087cb06a77546688445dc41805f7e5b/FLAG5bf655bbc
[2022-01-10 20:15:30,087 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8930de17f/4087cb06a77546688445dc41805f7e5b
[2022-01-10 20:15:30,089 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-10 20:15:30,090 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-01-10 20:15:30,103 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-10 20:15:30,103 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-10 20:15:30,105 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-10 20:15:30,106 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:15:30" (1/1) ...
[2022-01-10 20:15:30,106 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@871358d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:15:30, skipping insertion in model container
[2022-01-10 20:15:30,107 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:15:30" (1/1) ...
[2022-01-10 20:15:30,111 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-01-10 20:15:30,177 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-01-10 20:15:30,448 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/id_build.i.p+nlh-reducer.c[32736,32749]
[2022-01-10 20:15:30,453 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/id_build.i.p+nlh-reducer.c[33038,33051]
[2022-01-10 20:15:30,481 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:15:30,493 INFO  L203         MainTranslator]: Completed pre-run
[2022-01-10 20:15:30,629 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/id_build.i.p+nlh-reducer.c[32736,32749]
[2022-01-10 20:15:30,633 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/id_build.i.p+nlh-reducer.c[33038,33051]
[2022-01-10 20:15:30,693 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-01-10 20:15:30,706 INFO  L208         MainTranslator]: Completed translation
[2022-01-10 20:15:30,707 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:15:30 WrapperNode
[2022-01-10 20:15:30,709 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-10 20:15:30,710 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-01-10 20:15:30,710 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-01-10 20:15:30,710 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-01-10 20:15:30,717 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:15:30" (1/1) ...
[2022-01-10 20:15:30,747 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:15:30" (1/1) ...
[2022-01-10 20:15:30,798 INFO  L137                Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1403
[2022-01-10 20:15:30,798 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-01-10 20:15:30,799 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-10 20:15:30,799 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-10 20:15:30,799 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-01-10 20:15:30,805 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:15:30" (1/1) ...
[2022-01-10 20:15:30,805 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:15:30" (1/1) ...
[2022-01-10 20:15:30,810 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:15:30" (1/1) ...
[2022-01-10 20:15:30,811 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:15:30" (1/1) ...
[2022-01-10 20:15:30,828 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:15:30" (1/1) ...
[2022-01-10 20:15:30,846 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:15:30" (1/1) ...
[2022-01-10 20:15:30,850 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:15:30" (1/1) ...
[2022-01-10 20:15:30,854 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-10 20:15:30,855 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-10 20:15:30,855 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-01-10 20:15:30,855 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-01-10 20:15:30,856 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:15:30" (1/1) ...
[2022-01-10 20:15:30,877 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-10 20:15:30,883 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:15:30,896 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-01-10 20:15:30,933 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-01-10 20:15:30,945 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-10 20:15:30,945 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2022-01-10 20:15:30,945 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-10 20:15:30,945 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-10 20:15:31,059 INFO  L234             CfgBuilder]: Building ICFG
[2022-01-10 20:15:31,060 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-10 20:15:32,119 INFO  L275             CfgBuilder]: Performing block encoding
[2022-01-10 20:15:32,126 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-10 20:15:32,127 INFO  L299             CfgBuilder]: Removed 0 assume(true) statements.
[2022-01-10 20:15:32,131 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:15:32 BoogieIcfgContainer
[2022-01-10 20:15:32,131 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-10 20:15:32,132 INFO  L113        PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-10 20:15:32,132 INFO  L271        PluginConnector]: Initializing IcfgTransformer...
[2022-01-10 20:15:32,133 INFO  L275        PluginConnector]: IcfgTransformer initialized
[2022-01-10 20:15:32,140 INFO  L185        PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:15:32" (1/1) ...
[2022-01-10 20:15:32,415 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:15:32 BasicIcfg
[2022-01-10 20:15:32,415 INFO  L132        PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-10 20:15:32,418 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-10 20:15:32,418 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-01-10 20:15:32,420 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-01-10 20:15:32,420 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:15:30" (1/4) ...
[2022-01-10 20:15:32,421 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f64fe4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:15:32, skipping insertion in model container
[2022-01-10 20:15:32,421 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:15:30" (2/4) ...
[2022-01-10 20:15:32,421 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f64fe4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:15:32, skipping insertion in model container
[2022-01-10 20:15:32,421 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:15:32" (3/4) ...
[2022-01-10 20:15:32,422 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f64fe4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:15:32, skipping insertion in model container
[2022-01-10 20:15:32,422 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:15:32" (4/4) ...
[2022-01-10 20:15:32,423 INFO  L111   eAbstractionObserver]: Analyzing ICFG id_build.i.p+nlh-reducer.cTransformedIcfg
[2022-01-10 20:15:32,428 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-01-10 20:15:32,428 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2022-01-10 20:15:32,469 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-10 20:15:32,476 INFO  L339      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-01-10 20:15:32,476 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2022-01-10 20:15:32,490 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 251 states, 248 states have (on average 1.9596774193548387) internal successors, (486), 250 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:15:32,501 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 138
[2022-01-10 20:15:32,501 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:15:32,502 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:15:32,502 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:15:32,506 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:15:32,507 INFO  L85        PathProgramCache]: Analyzing trace with hash -687598878, now seen corresponding path program 1 times
[2022-01-10 20:15:32,512 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:15:32,516 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926102394]
[2022-01-10 20:15:32,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:15:32,517 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:15:32,935 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:15:33,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:15:33,235 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:15:33,236 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926102394]
[2022-01-10 20:15:33,236 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926102394] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:15:33,236 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:15:33,236 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-10 20:15:33,237 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617079377]
[2022-01-10 20:15:33,238 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:15:33,241 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 20:15:33,242 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:15:33,262 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 20:15:33,263 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-01-10 20:15:33,266 INFO  L87              Difference]: Start difference. First operand  has 251 states, 248 states have (on average 1.9596774193548387) internal successors, (486), 250 states have internal predecessors, (486), 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 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:15:34,597 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 20:15:43,620 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 20:15:47,731 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 20:15:50,253 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:15:50,254 INFO  L93              Difference]: Finished difference Result 281 states and 518 transitions.
[2022-01-10 20:15:50,255 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 20:15:50,256 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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 137
[2022-01-10 20:15:50,256 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:15:50,263 INFO  L225             Difference]: With dead ends: 281
[2022-01-10 20:15:50,263 INFO  L226             Difference]: Without dead ends: 264
[2022-01-10 20:15:50,264 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-01-10 20:15:50,266 INFO  L933         BasicCegarLoop]: 491 mSDtfsCounter, 42 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time
[2022-01-10 20:15:50,267 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 1602 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 1 Unknown, 0 Unchecked, 16.9s Time]
[2022-01-10 20:15:50,278 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 264 states.
[2022-01-10 20:15:50,295 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 253.
[2022-01-10 20:15:50,296 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 253 states, 251 states have (on average 1.1633466135458168) internal successors, (292), 252 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:15:50,297 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 292 transitions.
[2022-01-10 20:15:50,297 INFO  L78                 Accepts]: Start accepts. Automaton has 253 states and 292 transitions. Word has length 137
[2022-01-10 20:15:50,298 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:15:50,298 INFO  L470      AbstractCegarLoop]: Abstraction has 253 states and 292 transitions.
[2022-01-10 20:15:50,298 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:15:50,298 INFO  L276                IsEmpty]: Start isEmpty. Operand 253 states and 292 transitions.
[2022-01-10 20:15:50,302 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2022-01-10 20:15:50,302 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:15:50,302 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:15:50,302 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-10 20:15:50,302 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:15:50,303 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:15:50,303 INFO  L85        PathProgramCache]: Analyzing trace with hash -1405722425, now seen corresponding path program 1 times
[2022-01-10 20:15:50,303 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:15:50,303 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507163250]
[2022-01-10 20:15:50,303 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:15:50,303 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:15:50,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:15:50,611 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:15:50,611 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:15:50,612 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507163250]
[2022-01-10 20:15:50,612 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507163250] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:15:50,613 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:15:50,613 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-10 20:15:50,613 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460306979]
[2022-01-10 20:15:50,613 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:15:50,615 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 20:15:50,615 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:15:50,616 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 20:15:50,616 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-01-10 20:15:50,616 INFO  L87              Difference]: Start difference. First operand 253 states and 292 transitions. Second operand  has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:15:56,885 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:15:56,886 INFO  L93              Difference]: Finished difference Result 270 states and 313 transitions.
[2022-01-10 20:15:56,886 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 20:15:56,886 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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 139
[2022-01-10 20:15:56,887 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:15:56,888 INFO  L225             Difference]: With dead ends: 270
[2022-01-10 20:15:56,888 INFO  L226             Difference]: Without dead ends: 268
[2022-01-10 20:15:56,888 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-01-10 20:15:56,889 INFO  L933         BasicCegarLoop]: 274 mSDtfsCounter, 43 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time
[2022-01-10 20:15:56,889 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 773 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time]
[2022-01-10 20:15:56,890 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 268 states.
[2022-01-10 20:15:56,898 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 258.
[2022-01-10 20:15:56,898 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 258 states, 256 states have (on average 1.16796875) internal successors, (299), 257 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:15:56,898 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 299 transitions.
[2022-01-10 20:15:56,899 INFO  L78                 Accepts]: Start accepts. Automaton has 258 states and 299 transitions. Word has length 139
[2022-01-10 20:15:56,899 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:15:56,899 INFO  L470      AbstractCegarLoop]: Abstraction has 258 states and 299 transitions.
[2022-01-10 20:15:56,899 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:15:56,899 INFO  L276                IsEmpty]: Start isEmpty. Operand 258 states and 299 transitions.
[2022-01-10 20:15:56,902 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2022-01-10 20:15:56,902 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:15:56,902 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:15:56,902 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-01-10 20:15:56,902 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:15:56,903 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:15:56,903 INFO  L85        PathProgramCache]: Analyzing trace with hash -1556573864, now seen corresponding path program 1 times
[2022-01-10 20:15:56,903 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:15:56,903 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87104320]
[2022-01-10 20:15:56,903 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:15:56,903 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:15:57,036 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:15:57,195 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:15:57,195 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:15:57,198 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87104320]
[2022-01-10 20:15:57,198 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87104320] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:15:57,198 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:15:57,199 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-10 20:15:57,199 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288985472]
[2022-01-10 20:15:57,199 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:15:57,200 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 20:15:57,201 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:15:57,201 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 20:15:57,201 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-01-10 20:15:57,201 INFO  L87              Difference]: Start difference. First operand 258 states and 299 transitions. Second operand  has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:16:02,855 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:16:02,856 INFO  L93              Difference]: Finished difference Result 268 states and 311 transitions.
[2022-01-10 20:16:02,856 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 20:16:02,856 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 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 140
[2022-01-10 20:16:02,857 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:16:02,858 INFO  L225             Difference]: With dead ends: 268
[2022-01-10 20:16:02,858 INFO  L226             Difference]: Without dead ends: 266
[2022-01-10 20:16:02,858 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-01-10 20:16:02,859 INFO  L933         BasicCegarLoop]: 260 mSDtfsCounter, 81 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time
[2022-01-10 20:16:02,859 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 696 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time]
[2022-01-10 20:16:02,860 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 266 states.
[2022-01-10 20:16:02,866 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 258.
[2022-01-10 20:16:02,866 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 258 states, 256 states have (on average 1.1640625) internal successors, (298), 257 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:16:02,867 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 298 transitions.
[2022-01-10 20:16:02,867 INFO  L78                 Accepts]: Start accepts. Automaton has 258 states and 298 transitions. Word has length 140
[2022-01-10 20:16:02,871 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:16:02,871 INFO  L470      AbstractCegarLoop]: Abstraction has 258 states and 298 transitions.
[2022-01-10 20:16:02,871 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:16:02,871 INFO  L276                IsEmpty]: Start isEmpty. Operand 258 states and 298 transitions.
[2022-01-10 20:16:02,877 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2022-01-10 20:16:02,877 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:16:02,877 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:16:02,878 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-01-10 20:16:02,878 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:16:02,878 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:16:02,878 INFO  L85        PathProgramCache]: Analyzing trace with hash 2015517883, now seen corresponding path program 1 times
[2022-01-10 20:16:02,879 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:16:02,879 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522591563]
[2022-01-10 20:16:02,879 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:16:02,879 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:16:03,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:16:03,137 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:16:03,137 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:16:03,139 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522591563]
[2022-01-10 20:16:03,140 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522591563] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-10 20:16:03,140 INFO  L186   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-10 20:16:03,140 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-01-10 20:16:03,140 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193502099]
[2022-01-10 20:16:03,141 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-10 20:16:03,142 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-10 20:16:03,142 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-10 20:16:03,143 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-10 20:16:03,143 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-01-10 20:16:03,143 INFO  L87              Difference]: Start difference. First operand 258 states and 298 transitions. Second operand  has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:16:04,560 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 20:16:06,153 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 20:16:07,530 WARN  L534   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2022-01-10 20:16:22,037 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-10 20:16:22,037 INFO  L93              Difference]: Finished difference Result 271 states and 312 transitions.
[2022-01-10 20:16:22,039 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-01-10 20:16:22,039 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 141
[2022-01-10 20:16:22,039 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-10 20:16:22,040 INFO  L225             Difference]: With dead ends: 271
[2022-01-10 20:16:22,040 INFO  L226             Difference]: Without dead ends: 269
[2022-01-10 20:16:22,040 INFO  L932         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-01-10 20:16:22,041 INFO  L933         BasicCegarLoop]: 288 mSDtfsCounter, 21 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time
[2022-01-10 20:16:22,041 INFO  L934         BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 800 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time]
[2022-01-10 20:16:22,042 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 269 states.
[2022-01-10 20:16:22,050 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 253.
[2022-01-10 20:16:22,050 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 253 states, 251 states have (on average 1.159362549800797) internal successors, (291), 252 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:16:22,051 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 291 transitions.
[2022-01-10 20:16:22,051 INFO  L78                 Accepts]: Start accepts. Automaton has 253 states and 291 transitions. Word has length 141
[2022-01-10 20:16:22,051 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-01-10 20:16:22,051 INFO  L470      AbstractCegarLoop]: Abstraction has 253 states and 291 transitions.
[2022-01-10 20:16:22,051 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-01-10 20:16:22,052 INFO  L276                IsEmpty]: Start isEmpty. Operand 253 states and 291 transitions.
[2022-01-10 20:16:22,052 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2022-01-10 20:16:22,052 INFO  L506         BasicCegarLoop]: Found error trace
[2022-01-10 20:16:22,052 INFO  L514         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-01-10 20:16:22,052 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-01-10 20:16:22,053 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-10 20:16:22,053 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-01-10 20:16:22,053 INFO  L85        PathProgramCache]: Analyzing trace with hash 2016479108, now seen corresponding path program 1 times
[2022-01-10 20:16:22,053 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-10 20:16:22,053 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805101075]
[2022-01-10 20:16:22,053 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:16:22,053 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-10 20:16:22,419 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:16:22,803 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-01-10 20:16:22,803 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-10 20:16:22,803 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805101075]
[2022-01-10 20:16:22,803 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805101075] provided 0 perfect and 1 imperfect interpolant sequences
[2022-01-10 20:16:22,803 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144467804]
[2022-01-10 20:16:22,803 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-10 20:16:22,804 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-10 20:16:22,804 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-10 20:16:22,809 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-01-10 20:16:22,813 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-10 20:16:23,684 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-10 20:16:23,705 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 52 conjunts are in the unsatisfiable core
[2022-01-10 20:16:23,720 INFO  L286         TraceCheckSpWp]: Computing forward predicates...