/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 OctagonDomain -i ../sv-benchmarks/c/loops-crafted-1/sumt8.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 05:07:19,963 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 05:07:19,965 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-01 05:07:20,000 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-01 05:07:20,000 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 05:07:20,002 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 05:07:20,004 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-01 05:07:20,006 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-01 05:07:20,007 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-01 05:07:20,011 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-01 05:07:20,012 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-01 05:07:20,014 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-01 05:07:20,014 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-04-01 05:07:20,016 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-04-01 05:07:20,019 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-01 05:07:20,020 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 05:07:20,020 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 05:07:20,021 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 05:07:20,022 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-01 05:07:20,026 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-01 05:07:20,027 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-01 05:07:20,028 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-01 05:07:20,028 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 05:07:20,029 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 05:07:20,035 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 05:07:20,036 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-04-01 05:07:20,038 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-01 05:07:20,038 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2023-04-01 05:07:20,039 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 05:07:20,039 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-01 05:07:20,040 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-04-01 05:07:20,040 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2023-04-01 05:07:20,041 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 05:07:20,041 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 05:07:20,042 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
[2023-04-01 05:07:20,065 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 05:07:20,065 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 05:07:20,065 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 05:07:20,066 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 05:07:20,066 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 05:07:20,067 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 05:07:20,067 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 05:07:20,067 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 05:07:20,067 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 05:07:20,067 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 05:07:20,067 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 05:07:20,068 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 05:07:20,068 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 05:07:20,068 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 05:07:20,068 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 05:07:20,068 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 05:07:20,068 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 05:07:20,068 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 05:07:20,068 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 05:07:20,069 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 05:07:20,069 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 05:07:20,069 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 05:07:20,069 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 05:07:20,069 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 05:07:20,069 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 05:07:20,069 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 05:07:20,069 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 05:07:20,069 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 05:07:20,069 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 05:07:20,069 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 05:07:20,070 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 05:07:20,070 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 05:07:20,070 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 05:07:20,070 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 05:07:20,070 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 05:07:20,070 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 05:07:20,070 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 05:07:20,070 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 05:07:20,070 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 05:07:20,070 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 05:07:20,071 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 05:07:20,071 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-01 05:07:20,293 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 05:07:20,311 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 05:07:20,312 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 05:07:20,313 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 05:07:20,314 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 05:07:20,315 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/sumt8.c
[2023-04-01 05:07:21,181 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 05:07:21,349 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 05:07:21,350 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/sumt8.c
[2023-04-01 05:07:21,354 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e228a7eb4/5026d5370f34442ab64f635a67f8bd8f/FLAGeaa639ead
[2023-04-01 05:07:21,372 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e228a7eb4/5026d5370f34442ab64f635a67f8bd8f
[2023-04-01 05:07:21,374 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 05:07:21,375 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 05:07:21,377 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 05:07:21,378 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 05:07:21,380 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 05:07:21,380 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:07:21" (1/1) ...
[2023-04-01 05:07:21,381 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60507fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:07:21, skipping insertion in model container
[2023-04-01 05:07:21,382 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:07:21" (1/1) ...
[2023-04-01 05:07:21,386 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 05:07:21,404 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 05:07:21,527 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/loops-crafted-1/sumt8.c[403,416]
[2023-04-01 05:07:21,543 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 05:07:21,558 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 05:07:21,568 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/loops-crafted-1/sumt8.c[403,416]
[2023-04-01 05:07:21,573 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 05:07:21,587 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 05:07:21,587 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:07:21 WrapperNode
[2023-04-01 05:07:21,587 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 05:07:21,588 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 05:07:21,588 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 05:07:21,588 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 05:07:21,597 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:07:21" (1/1) ...
[2023-04-01 05:07:21,597 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:07:21" (1/1) ...
[2023-04-01 05:07:21,617 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:07:21" (1/1) ...
[2023-04-01 05:07:21,617 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:07:21" (1/1) ...
[2023-04-01 05:07:21,624 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:07:21" (1/1) ...
[2023-04-01 05:07:21,631 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:07:21" (1/1) ...
[2023-04-01 05:07:21,632 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:07:21" (1/1) ...
[2023-04-01 05:07:21,632 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:07:21" (1/1) ...
[2023-04-01 05:07:21,633 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 05:07:21,634 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 05:07:21,634 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 05:07:21,634 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 05:07:21,635 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:07:21" (1/1) ...
[2023-04-01 05:07:21,656 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 05:07:21,665 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 05:07:21,678 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)
[2023-04-01 05:07:21,680 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
[2023-04-01 05:07:21,720 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 05:07:21,720 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 05:07:21,720 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 05:07:21,723 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-04-01 05:07:21,723 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-04-01 05:07:21,723 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 05:07:21,724 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 05:07:21,724 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 05:07:21,724 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 05:07:21,724 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 05:07:21,724 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-04-01 05:07:21,724 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-04-01 05:07:21,724 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2023-04-01 05:07:21,724 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 05:07:21,724 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 05:07:21,725 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 05:07:21,725 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 05:07:21,725 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 05:07:21,725 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 05:07:21,725 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 05:07:21,805 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 05:07:21,807 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 05:07:22,018 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 05:07:22,252 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 05:07:22,253 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 05:07:22,254 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:07:22 BoogieIcfgContainer
[2023-04-01 05:07:22,255 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 05:07:22,259 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 05:07:22,259 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 05:07:22,261 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 05:07:22,261 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:07:21" (1/3) ...
[2023-04-01 05:07:22,262 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae85622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:07:22, skipping insertion in model container
[2023-04-01 05:07:22,262 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:07:21" (2/3) ...
[2023-04-01 05:07:22,262 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae85622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:07:22, skipping insertion in model container
[2023-04-01 05:07:22,262 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:07:22" (3/3) ...
[2023-04-01 05:07:22,263 INFO  L112   eAbstractionObserver]: Analyzing ICFG sumt8.c
[2023-04-01 05:07:22,277 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 05:07:22,277 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 05:07:22,312 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 05:07:22,316 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;@3424dc5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 05:07:22,317 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 05:07:22,319 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 18 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2023-04-01 05:07:22,323 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2023-04-01 05:07:22,323 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 05:07:22,324 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 05:07:22,324 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 05:07:22,327 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 05:07:22,327 INFO  L85        PathProgramCache]: Analyzing trace with hash -1525849190, now seen corresponding path program 1 times
[2023-04-01 05:07:22,334 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 05:07:22,334 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422881620]
[2023-04-01 05:07:22,335 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 05:07:22,335 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 05:07:22,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 05:07:23,263 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 05:07:23,264 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 05:07:23,264 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422881620]
[2023-04-01 05:07:23,265 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422881620] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 05:07:23,265 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 05:07:23,265 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-04-01 05:07:23,266 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377160316]
[2023-04-01 05:07:23,267 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 05:07:23,270 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-04-01 05:07:23,270 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 05:07:23,292 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-04-01 05:07:23,292 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-04-01 05:07:23,294 INFO  L87              Difference]: Start difference. First operand  has 18 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand  has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 05:07:23,361 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 05:07:23,361 INFO  L93              Difference]: Finished difference Result 41 states and 49 transitions.
[2023-04-01 05:07:23,362 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-04-01 05:07:23,363 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2023-04-01 05:07:23,363 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 05:07:23,366 INFO  L225             Difference]: With dead ends: 41
[2023-04-01 05:07:23,366 INFO  L226             Difference]: Without dead ends: 21
[2023-04-01 05:07:23,368 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-04-01 05:07:23,370 INFO  L413           NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-04-01 05:07:23,371 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 47 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-04-01 05:07:23,381 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2023-04-01 05:07:23,390 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20.
[2023-04-01 05:07:23,391 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2023-04-01 05:07:23,392 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions.
[2023-04-01 05:07:23,392 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11
[2023-04-01 05:07:23,393 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 05:07:23,393 INFO  L495      AbstractCegarLoop]: Abstraction has 20 states and 20 transitions.
[2023-04-01 05:07:23,393 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2023-04-01 05:07:23,393 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions.
[2023-04-01 05:07:23,394 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2023-04-01 05:07:23,394 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 05:07:23,394 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 05:07:23,394 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 05:07:23,394 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 05:07:23,395 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 05:07:23,395 INFO  L85        PathProgramCache]: Analyzing trace with hash 1747439819, now seen corresponding path program 1 times
[2023-04-01 05:07:23,395 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 05:07:23,395 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216899423]
[2023-04-01 05:07:23,395 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 05:07:23,395 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 05:07:23,497 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 05:07:25,133 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 05:07:25,133 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 05:07:25,134 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216899423]
[2023-04-01 05:07:25,134 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216899423] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 05:07:25,134 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617317743]
[2023-04-01 05:07:25,134 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 05:07:25,135 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 05:07:25,135 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 05:07:25,148 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)
[2023-04-01 05:07:25,182 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-04-01 05:07:25,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 05:07:25,219 INFO  L262         TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 35 conjunts are in the unsatisfiable core
[2023-04-01 05:07:25,223 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 05:07:25,473 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 05:07:25,473 INFO  L327         TraceCheckSpWp]: Computing backward predicates...