/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/array-fpi/res2o.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-03-31 21:02:30,372 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-03-31 21:02:30,373 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-03-31 21:02:30,399 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-03-31 21:02:30,400 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-03-31 21:02:30,401 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-03-31 21:02:30,402 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-03-31 21:02:30,403 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-03-31 21:02:30,404 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-03-31 21:02:30,404 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-03-31 21:02:30,411 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-03-31 21:02:30,411 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-03-31 21:02:30,416 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-03-31 21:02:30,416 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-03-31 21:02:30,417 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-03-31 21:02:30,417 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-03-31 21:02:30,418 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-03-31 21:02:30,418 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2023-03-31 21:02:30,426 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-03-31 21:02:30,427 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-03-31 21:02:30,434 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-03-31 21:02:30,434 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-03-31 21:02:30,438 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-03-31 21:02:30,439 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-03-31 21:02:30,442 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf
[2023-03-31 21:02:30,459 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-03-31 21:02:30,459 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-03-31 21:02:30,459 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-03-31 21:02:30,459 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-03-31 21:02:30,460 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-03-31 21:02:30,460 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-03-31 21:02:30,460 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-03-31 21:02:30,460 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-03-31 21:02:30,460 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-03-31 21:02:30,460 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-03-31 21:02:30,460 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-03-31 21:02:30,460 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-03-31 21:02:30,460 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-03-31 21:02:30,463 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-03-31 21:02:30,463 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-03-31 21:02:30,463 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-03-31 21:02:30,463 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-03-31 21:02:30,463 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-03-31 21:02:30,464 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-03-31 21:02:30,464 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-03-31 21:02:30,464 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-03-31 21:02:30,464 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-03-31 21:02:30,464 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-03-31 21:02:30,465 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-03-31 21:02:30,465 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-03-31 21:02:30,465 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-03-31 21:02:30,465 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-03-31 21:02:30,465 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-03-31 21:02:30,465 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-03-31 21:02:30,466 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-03-31 21:02:30,466 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-03-31 21:02:30,466 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-03-31 21:02:30,466 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-31 21:02:30,466 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-03-31 21:02:30,466 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-03-31 21:02:30,466 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-03-31 21:02:30,467 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-03-31 21:02:30,467 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-03-31 21:02:30,467 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-03-31 21:02:30,467 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-03-31 21:02:30,467 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-03-31 21:02:30,467 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain
[2023-03-31 21:02:30,638 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-03-31 21:02:30,659 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-03-31 21:02:30,660 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-03-31 21:02:30,661 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-03-31 21:02:30,662 INFO  L275        PluginConnector]: CDTParser initialized
[2023-03-31 21:02:30,663 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/res2o.c
[2023-03-31 21:02:31,610 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-03-31 21:02:31,814 INFO  L351              CDTParser]: Found 1 translation units.
[2023-03-31 21:02:31,814 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/res2o.c
[2023-03-31 21:02:31,823 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b415e65ed/03b078c357a745b28988ece8e27933f8/FLAGed5cb8321
[2023-03-31 21:02:32,220 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b415e65ed/03b078c357a745b28988ece8e27933f8
[2023-03-31 21:02:32,223 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-03-31 21:02:32,224 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-03-31 21:02:32,225 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-03-31 21:02:32,225 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-03-31 21:02:32,227 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-03-31 21:02:32,227 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:02:32" (1/1) ...
[2023-03-31 21:02:32,228 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7640fa8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:02:32, skipping insertion in model container
[2023-03-31 21:02:32,228 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:02:32" (1/1) ...
[2023-03-31 21:02:32,232 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-03-31 21:02:32,241 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-03-31 21:02:32,335 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/res2o.c[588,601]
[2023-03-31 21:02:32,348 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-31 21:02:32,356 INFO  L203         MainTranslator]: Completed pre-run
[2023-03-31 21:02:32,365 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/res2o.c[588,601]
[2023-03-31 21:02:32,373 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-03-31 21:02:32,385 INFO  L208         MainTranslator]: Completed translation
[2023-03-31 21:02:32,385 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:02:32 WrapperNode
[2023-03-31 21:02:32,385 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-03-31 21:02:32,386 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-03-31 21:02:32,386 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-03-31 21:02:32,386 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-03-31 21:02:32,395 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:02:32" (1/1) ...
[2023-03-31 21:02:32,395 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:02:32" (1/1) ...
[2023-03-31 21:02:32,407 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:02:32" (1/1) ...
[2023-03-31 21:02:32,407 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:02:32" (1/1) ...
[2023-03-31 21:02:32,412 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:02:32" (1/1) ...
[2023-03-31 21:02:32,415 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:02:32" (1/1) ...
[2023-03-31 21:02:32,416 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:02:32" (1/1) ...
[2023-03-31 21:02:32,416 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:02:32" (1/1) ...
[2023-03-31 21:02:32,418 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-03-31 21:02:32,418 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-03-31 21:02:32,418 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-03-31 21:02:32,418 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-03-31 21:02:32,419 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:02:32" (1/1) ...
[2023-03-31 21:02:32,423 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-03-31 21:02:32,438 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 21:02:32,447 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)
[2023-03-31 21:02:32,468 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
[2023-03-31 21:02:32,484 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-03-31 21:02:32,485 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-03-31 21:02:32,485 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-03-31 21:02:32,485 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-03-31 21:02:32,485 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-03-31 21:02:32,485 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-03-31 21:02:32,485 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-03-31 21:02:32,485 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-03-31 21:02:32,485 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-03-31 21:02:32,485 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-03-31 21:02:32,485 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-03-31 21:02:32,486 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-03-31 21:02:32,486 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-03-31 21:02:32,486 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2023-03-31 21:02:32,486 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-03-31 21:02:32,486 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-03-31 21:02:32,486 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-03-31 21:02:32,486 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-03-31 21:02:32,486 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-03-31 21:02:32,486 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-03-31 21:02:32,486 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-03-31 21:02:32,486 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-03-31 21:02:32,487 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-03-31 21:02:32,533 INFO  L236             CfgBuilder]: Building ICFG
[2023-03-31 21:02:32,534 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-03-31 21:02:32,683 INFO  L277             CfgBuilder]: Performing block encoding
[2023-03-31 21:02:32,746 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-03-31 21:02:32,746 INFO  L302             CfgBuilder]: Removed 6 assume(true) statements.
[2023-03-31 21:02:32,748 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:02:32 BoogieIcfgContainer
[2023-03-31 21:02:32,748 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-03-31 21:02:32,750 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-03-31 21:02:32,750 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-03-31 21:02:32,752 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-03-31 21:02:32,752 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 09:02:32" (1/3) ...
[2023-03-31 21:02:32,752 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e31acd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:02:32, skipping insertion in model container
[2023-03-31 21:02:32,752 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:02:32" (2/3) ...
[2023-03-31 21:02:32,753 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e31acd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:02:32, skipping insertion in model container
[2023-03-31 21:02:32,753 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:02:32" (3/3) ...
[2023-03-31 21:02:32,753 INFO  L112   eAbstractionObserver]: Analyzing ICFG res2o.c
[2023-03-31 21:02:32,764 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-03-31 21:02:32,764 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-03-31 21:02:32,793 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-03-31 21:02:32,798 INFO  L357      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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d2d64d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-03-31 21:02:32,798 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-03-31 21:02:32,803 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 28 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2023-03-31 21:02:32,808 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2023-03-31 21:02:32,808 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 21:02:32,808 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 21:02:32,808 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 21:02:32,812 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 21:02:32,812 INFO  L85        PathProgramCache]: Analyzing trace with hash 1698240331, now seen corresponding path program 1 times
[2023-03-31 21:02:32,818 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-03-31 21:02:32,818 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496766502]
[2023-03-31 21:02:32,818 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 21:02:32,819 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 21:02:32,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 21:02:33,061 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 21:02:33,062 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-03-31 21:02:33,062 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496766502]
[2023-03-31 21:02:33,062 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496766502] provided 1 perfect and 0 imperfect interpolant sequences
[2023-03-31 21:02:33,063 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-03-31 21:02:33,063 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-03-31 21:02:33,064 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183330021]
[2023-03-31 21:02:33,064 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-03-31 21:02:33,067 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-03-31 21:02:33,067 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-03-31 21:02:33,110 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-03-31 21:02:33,110 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-03-31 21:02:33,111 INFO  L87              Difference]: Start difference. First operand  has 28 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand  has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-31 21:02:33,213 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-31 21:02:33,213 INFO  L93              Difference]: Finished difference Result 55 states and 73 transitions.
[2023-03-31 21:02:33,216 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-03-31 21:02:33,217 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20
[2023-03-31 21:02:33,217 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-31 21:02:33,221 INFO  L225             Difference]: With dead ends: 55
[2023-03-31 21:02:33,221 INFO  L226             Difference]: Without dead ends: 27
[2023-03-31 21:02:33,222 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-03-31 21:02:33,225 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 26 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-03-31 21:02:33,225 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 42 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-03-31 21:02:33,237 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2023-03-31 21:02:33,262 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2023-03-31 21:02:33,264 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-31 21:02:33,265 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions.
[2023-03-31 21:02:33,266 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 20
[2023-03-31 21:02:33,266 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-31 21:02:33,266 INFO  L495      AbstractCegarLoop]: Abstraction has 27 states and 32 transitions.
[2023-03-31 21:02:33,267 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-31 21:02:33,267 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions.
[2023-03-31 21:02:33,267 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2023-03-31 21:02:33,267 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 21:02:33,267 INFO  L195           NwaCegarLoop]: 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]
[2023-03-31 21:02:33,268 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-03-31 21:02:33,268 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 21:02:33,268 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 21:02:33,268 INFO  L85        PathProgramCache]: Analyzing trace with hash -1845636993, now seen corresponding path program 1 times
[2023-03-31 21:02:33,269 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-03-31 21:02:33,269 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718072794]
[2023-03-31 21:02:33,269 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 21:02:33,269 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 21:02:33,384 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 21:02:35,115 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 21:02:35,115 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-03-31 21:02:35,115 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718072794]
[2023-03-31 21:02:35,115 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718072794] provided 0 perfect and 1 imperfect interpolant sequences
[2023-03-31 21:02:35,116 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916561856]
[2023-03-31 21:02:35,116 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 21:02:35,116 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 21:02:35,116 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 21:02:35,118 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)
[2023-03-31 21:02:35,119 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-03-31 21:02:35,183 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 21:02:35,185 INFO  L262         TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 63 conjunts are in the unsatisfiable core
[2023-03-31 21:02:35,191 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-31 21:02:35,243 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:35,252 INFO  L321             Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2023-03-31 21:02:35,252 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19
[2023-03-31 21:02:35,264 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2023-03-31 21:02:35,329 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18
[2023-03-31 21:02:35,452 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:35,459 INFO  L321             Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2023-03-31 21:02:35,459 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28
[2023-03-31 21:02:35,585 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:35,586 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:35,589 INFO  L321             Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2023-03-31 21:02:35,589 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 38
[2023-03-31 21:02:35,745 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:35,746 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:35,749 INFO  L321             Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2023-03-31 21:02:35,750 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 46
[2023-03-31 21:02:35,901 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:35,902 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:35,904 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 36
[2023-03-31 21:02:36,039 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:36,040 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:36,042 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36
[2023-03-31 21:02:36,121 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:36,122 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:36,123 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 15
[2023-03-31 21:02:36,186 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 21:02:36,186 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-03-31 21:02:41,420 INFO  L173   IndexEqualityManager]: detected equality via solver
[2023-03-31 21:02:41,421 INFO  L173   IndexEqualityManager]: detected equality via solver
[2023-03-31 21:02:41,421 INFO  L173   IndexEqualityManager]: detected equality via solver
[2023-03-31 21:02:41,422 INFO  L173   IndexEqualityManager]: detected equality via solver
[2023-03-31 21:02:41,423 INFO  L173   IndexEqualityManager]: detected equality via solver
[2023-03-31 21:02:41,439 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 21:02:41,439 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916561856] provided 0 perfect and 2 imperfect interpolant sequences
[2023-03-31 21:02:41,439 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1773489088]
[2023-03-31 21:02:41,461 INFO  L159        IcfgInterpreter]: Started Sifa with 21 locations of interest
[2023-03-31 21:02:41,462 INFO  L166        IcfgInterpreter]: Building call graph
[2023-03-31 21:02:41,464 INFO  L171        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2023-03-31 21:02:41,467 INFO  L176        IcfgInterpreter]: Starting interpretation
[2023-03-31 21:02:41,467 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2023-03-31 21:02:41,508 INFO  L197        IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs
[2023-03-31 21:02:41,630 INFO  L197        IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs
[2023-03-31 21:02:41,640 INFO  L197        IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 24 for LOIs
[2023-03-31 21:02:41,643 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs
[2023-03-31 21:02:41,648 INFO  L180        IcfgInterpreter]: Interpretation finished
[2023-03-31 21:02:42,480 INFO  L133             SifaRunner]: Sifa could not show that error location is unreachable, found '361#(and (<= 0 ~N~0) (<= ~N~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (exists ((|v_main_~#sum~0.base_BEFORE_CALL_1| Int)) (and (< (* 3 ~N~0) (select (select |#memory_int| |v_main_~#sum~0.base_BEFORE_CALL_1|) 0)) (<= 0 |v_main_~#sum~0.base_BEFORE_CALL_1|))) (= |#NULL.base| 0))' at error location
[2023-03-31 21:02:42,481 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED
[2023-03-31 21:02:42,481 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-03-31 21:02:42,481 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 44
[2023-03-31 21:02:42,481 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895364354]
[2023-03-31 21:02:42,481 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-03-31 21:02:42,482 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 44 states
[2023-03-31 21:02:42,482 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-03-31 21:02:42,483 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2023-03-31 21:02:42,485 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=2999, Unknown=2, NotChecked=0, Total=3306
[2023-03-31 21:02:42,485 INFO  L87              Difference]: Start difference. First operand 27 states and 32 transitions. Second operand  has 44 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 42 states have internal predecessors, (48), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2023-03-31 21:02:43,857 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-31 21:02:43,857 INFO  L93              Difference]: Finished difference Result 37 states and 44 transitions.
[2023-03-31 21:02:43,860 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2023-03-31 21:02:43,860 INFO  L78                 Accepts]: Start accepts. Automaton has  has 44 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 42 states have internal predecessors, (48), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26
[2023-03-31 21:02:43,860 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-31 21:02:43,861 INFO  L225             Difference]: With dead ends: 37
[2023-03-31 21:02:43,861 INFO  L226             Difference]: Without dead ends: 32
[2023-03-31 21:02:43,863 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=518, Invalid=4592, Unknown=2, NotChecked=0, Total=5112
[2023-03-31 21:02:43,863 INFO  L413           NwaCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-03-31 21:02:43,864 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 115 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-03-31 21:02:43,864 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2023-03-31 21:02:43,868 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31.
[2023-03-31 21:02:43,868 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-31 21:02:43,890 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions.
[2023-03-31 21:02:43,890 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 26
[2023-03-31 21:02:43,890 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-31 21:02:43,890 INFO  L495      AbstractCegarLoop]: Abstraction has 31 states and 38 transitions.
[2023-03-31 21:02:43,891 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 44 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 42 states have internal predecessors, (48), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2023-03-31 21:02:43,891 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions.
[2023-03-31 21:02:43,891 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2023-03-31 21:02:43,892 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 21:02:43,892 INFO  L195           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 21:02:43,899 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-03-31 21:02:44,092 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 21:02:44,093 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 21:02:44,093 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 21:02:44,093 INFO  L85        PathProgramCache]: Analyzing trace with hash 2122855433, now seen corresponding path program 2 times
[2023-03-31 21:02:44,093 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-03-31 21:02:44,093 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466849379]
[2023-03-31 21:02:44,093 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 21:02:44,094 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 21:02:44,107 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 21:02:44,222 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-03-31 21:02:44,222 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-03-31 21:02:44,222 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466849379]
[2023-03-31 21:02:44,222 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466849379] provided 0 perfect and 1 imperfect interpolant sequences
[2023-03-31 21:02:44,222 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874196774]
[2023-03-31 21:02:44,223 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-03-31 21:02:44,223 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 21:02:44,223 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 21:02:44,224 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-03-31 21:02:44,226 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-03-31 21:02:44,281 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2023-03-31 21:02:44,282 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-03-31 21:02:44,282 INFO  L262         TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-03-31 21:02:44,283 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-31 21:02:44,332 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-03-31 21:02:44,332 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-03-31 21:02:44,402 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2023-03-31 21:02:44,403 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874196774] provided 0 perfect and 2 imperfect interpolant sequences
[2023-03-31 21:02:44,403 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [974914259]
[2023-03-31 21:02:44,406 INFO  L159        IcfgInterpreter]: Started Sifa with 21 locations of interest
[2023-03-31 21:02:44,406 INFO  L166        IcfgInterpreter]: Building call graph
[2023-03-31 21:02:44,406 INFO  L171        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2023-03-31 21:02:44,406 INFO  L176        IcfgInterpreter]: Starting interpretation
[2023-03-31 21:02:44,406 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2023-03-31 21:02:44,444 INFO  L197        IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs
[2023-03-31 21:02:44,563 INFO  L197        IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs
[2023-03-31 21:02:44,572 INFO  L197        IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 24 for LOIs
[2023-03-31 21:02:44,577 INFO  L197        IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs
[2023-03-31 21:02:44,582 INFO  L180        IcfgInterpreter]: Interpretation finished
[2023-03-31 21:02:44,977 INFO  L133             SifaRunner]: Sifa could not show that error location is unreachable, found '695#(and (<= 0 ~N~0) (exists ((|v_main_~#sum~0.base_BEFORE_CALL_2| Int)) (and (<= 0 |v_main_~#sum~0.base_BEFORE_CALL_2|) (< (* 3 ~N~0) (select (select |#memory_int| |v_main_~#sum~0.base_BEFORE_CALL_2|) 0)))) (<= ~N~0 2147483647) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location
[2023-03-31 21:02:44,977 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED
[2023-03-31 21:02:44,977 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-03-31 21:02:44,977 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14
[2023-03-31 21:02:44,977 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391130864]
[2023-03-31 21:02:44,977 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-03-31 21:02:44,978 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2023-03-31 21:02:44,978 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-03-31 21:02:44,978 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2023-03-31 21:02:44,979 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756
[2023-03-31 21:02:44,979 INFO  L87              Difference]: Start difference. First operand 31 states and 38 transitions. Second operand  has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-03-31 21:02:45,169 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-03-31 21:02:45,169 INFO  L93              Difference]: Finished difference Result 61 states and 82 transitions.
[2023-03-31 21:02:45,169 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-03-31 21:02:45,169 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27
[2023-03-31 21:02:45,169 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-03-31 21:02:45,170 INFO  L225             Difference]: With dead ends: 61
[2023-03-31 21:02:45,170 INFO  L226             Difference]: Without dead ends: 33
[2023-03-31 21:02:45,170 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122
[2023-03-31 21:02:45,171 INFO  L413           NwaCegarLoop]: 12 mSDtfsCounter, 30 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-03-31 21:02:45,171 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 55 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-03-31 21:02:45,172 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2023-03-31 21:02:45,176 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2023-03-31 21:02:45,176 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2023-03-31 21:02:45,176 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions.
[2023-03-31 21:02:45,176 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 27
[2023-03-31 21:02:45,176 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-03-31 21:02:45,177 INFO  L495      AbstractCegarLoop]: Abstraction has 33 states and 38 transitions.
[2023-03-31 21:02:45,177 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2023-03-31 21:02:45,177 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions.
[2023-03-31 21:02:45,177 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2023-03-31 21:02:45,177 INFO  L187           NwaCegarLoop]: Found error trace
[2023-03-31 21:02:45,177 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-03-31 21:02:45,186 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-03-31 21:02:45,378 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2023-03-31 21:02:45,378 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-03-31 21:02:45,378 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-03-31 21:02:45,379 INFO  L85        PathProgramCache]: Analyzing trace with hash 680721227, now seen corresponding path program 3 times
[2023-03-31 21:02:45,379 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-03-31 21:02:45,379 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846246223]
[2023-03-31 21:02:45,379 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-03-31 21:02:45,379 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-03-31 21:02:45,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-03-31 21:02:47,775 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 21:02:47,775 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-03-31 21:02:47,775 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846246223]
[2023-03-31 21:02:47,776 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846246223] provided 0 perfect and 1 imperfect interpolant sequences
[2023-03-31 21:02:47,776 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769753254]
[2023-03-31 21:02:47,776 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-03-31 21:02:47,776 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-03-31 21:02:47,776 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-03-31 21:02:47,777 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-03-31 21:02:47,781 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-03-31 21:02:47,897 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-03-31 21:02:47,897 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2023-03-31 21:02:47,898 INFO  L262         TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 93 conjunts are in the unsatisfiable core
[2023-03-31 21:02:47,903 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-03-31 21:02:47,914 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2023-03-31 21:02:47,936 INFO  L321             Elim1Store]: treesize reduction 7, result has 12.5 percent of original size
[2023-03-31 21:02:47,936 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27
[2023-03-31 21:02:47,995 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:47,995 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23
[2023-03-31 21:02:48,085 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:48,086 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37
[2023-03-31 21:02:48,308 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:48,311 INFO  L321             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-03-31 21:02:48,311 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 47
[2023-03-31 21:02:48,428 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:48,430 INFO  L321             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-03-31 21:02:48,430 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 57
[2023-03-31 21:02:48,697 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:48,699 INFO  L321             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-03-31 21:02:48,700 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 67
[2023-03-31 21:02:48,832 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:48,835 INFO  L321             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-03-31 21:02:48,835 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 77
[2023-03-31 21:02:49,129 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:49,134 INFO  L321             Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2023-03-31 21:02:49,134 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 92
[2023-03-31 21:02:49,348 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:49,364 INFO  L321             Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2023-03-31 21:02:49,365 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 6 case distinctions, treesize of input 89 treesize of output 101
[2023-03-31 21:02:49,680 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:49,685 INFO  L321             Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2023-03-31 21:02:49,685 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 103
[2023-03-31 21:02:50,045 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:50,049 INFO  L321             Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2023-03-31 21:02:50,050 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 104
[2023-03-31 21:02:50,366 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:50,370 INFO  L321             Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2023-03-31 21:02:50,371 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 105
[2023-03-31 21:02:50,521 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:50,526 INFO  L321             Elim1Store]: treesize reduction 32, result has 3.0 percent of original size
[2023-03-31 21:02:50,526 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 106
[2023-03-31 21:02:51,018 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2023-03-31 21:02:51,029 INFO  L321             Elim1Store]: treesize reduction 26, result has 21.2 percent of original size
[2023-03-31 21:02:51,029 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 37
[2023-03-31 21:02:51,179 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-03-31 21:02:51,179 INFO  L327         TraceCheckSpWp]: Computing backward predicates...