/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 EqDomain -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 12:24:54,144 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 12:24:54,145 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-04-01 12:24:54,175 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 12:24:54,178 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 12:24:54,181 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-01 12:24:54,184 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-01 12:24:54,185 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-01 12:24:54,189 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-01 12:24:54,190 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-01 12:24:54,192 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-01 12:24:54,192 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2023-04-01 12:24:54,196 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 12:24:54,197 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 12:24:54,197 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 12:24:54,198 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2023-04-01 12:24:54,203 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-01 12:24:54,204 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-01 12:24:54,205 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 12:24:54,206 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 12:24:54,212 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 12:24:54,214 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2023-04-01 12:24:54,216 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 12:24:54,216 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
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[2023-04-01 12:24:54,217 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 12:24:54,218 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 12:24:54,219 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 12:24:54,247 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 12:24:54,247 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 12:24:54,247 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 12:24:54,247 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 12:24:54,248 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 12:24:54,248 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 12:24:54,248 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 12:24:54,248 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 12:24:54,248 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 12:24:54,248 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 12:24:54,249 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 12:24:54,249 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 12:24:54,249 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 12:24:54,249 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 12:24:54,249 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 12:24:54,249 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 12:24:54,250 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 12:24:54,250 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 12:24:54,250 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 12:24:54,250 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 12:24:54,250 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 12:24:54,250 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 12:24:54,250 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 12:24:54,251 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 12:24:54,251 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 12:24:54,251 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 12:24:54,251 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 12:24:54,251 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 12:24:54,251 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 12:24:54,251 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 12:24:54,251 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 12:24:54,252 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 12:24:54,252 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 12:24:54,252 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 12:24:54,252 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 12:24:54,252 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 12:24:54,252 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 12:24:54,252 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 12:24:54,252 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 12:24:54,252 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 12:24:54,252 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 12:24:54,253 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain
[2023-04-01 12:24:54,448 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 12:24:54,464 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 12:24:54,465 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 12:24:54,468 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 12:24:54,469 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 12:24:54,470 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c
[2023-04-01 12:24:55,561 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 12:24:55,739 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 12:24:55,739 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c
[2023-04-01 12:24:55,754 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33e8c3985/325e33fcd61747d98e55ead2b067a2b6/FLAG04263c99f
[2023-04-01 12:24:55,765 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33e8c3985/325e33fcd61747d98e55ead2b067a2b6
[2023-04-01 12:24:55,767 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 12:24:55,768 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 12:24:55,768 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 12:24:55,768 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 12:24:55,772 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 12:24:55,773 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:24:55" (1/1) ...
[2023-04-01 12:24:55,774 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ecf2be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:24:55, skipping insertion in model container
[2023-04-01 12:24:55,774 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:24:55" (1/1) ...
[2023-04-01 12:24:55,778 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 12:24:55,811 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 12:24:55,953 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/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c[11233,11246]
[2023-04-01 12:24:55,956 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 12:24:55,964 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 12:24:56,011 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/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c[11233,11246]
[2023-04-01 12:24:56,011 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 12:24:56,022 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 12:24:56,023 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:24:56 WrapperNode
[2023-04-01 12:24:56,023 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 12:24:56,023 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 12:24:56,024 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 12:24:56,024 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 12:24:56,032 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:24:56" (1/1) ...
[2023-04-01 12:24:56,032 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:24:56" (1/1) ...
[2023-04-01 12:24:56,038 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:24:56" (1/1) ...
[2023-04-01 12:24:56,038 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:24:56" (1/1) ...
[2023-04-01 12:24:56,045 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:24:56" (1/1) ...
[2023-04-01 12:24:56,050 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:24:56" (1/1) ...
[2023-04-01 12:24:56,052 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:24:56" (1/1) ...
[2023-04-01 12:24:56,053 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:24:56" (1/1) ...
[2023-04-01 12:24:56,056 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 12:24:56,071 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 12:24:56,071 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 12:24:56,073 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 12:24:56,074 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:24:56" (1/1) ...
[2023-04-01 12:24:56,078 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 12:24:56,087 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 12:24:56,100 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 12:24:56,102 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 12:24:56,124 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 12:24:56,124 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 12:24:56,124 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 12:24:56,125 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-04-01 12:24:56,125 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-01 12:24:56,125 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-01 12:24:56,125 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-01 12:24:56,125 INFO  L138     BoogieDeclarations]: Found implementation of procedure node4
[2023-04-01 12:24:56,125 INFO  L138     BoogieDeclarations]: Found implementation of procedure node5
[2023-04-01 12:24:56,125 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-01 12:24:56,125 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-01 12:24:56,125 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 12:24:56,125 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-01 12:24:56,125 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 12:24:56,126 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 12:24:56,126 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 12:24:56,126 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 12:24:56,126 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-01 12:24:56,126 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-01 12:24:56,126 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-01 12:24:56,126 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-04-01 12:24:56,126 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-01 12:24:56,126 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-01 12:24:56,126 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-01 12:24:56,126 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-01 12:24:56,127 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-01 12:24:56,127 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2023-04-01 12:24:56,127 INFO  L130     BoogieDeclarations]: Found specification of procedure node5
[2023-04-01 12:24:56,127 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-01 12:24:56,127 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-01 12:24:56,127 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 12:24:56,127 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 12:24:56,127 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 12:24:56,127 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 12:24:56,127 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 12:24:56,127 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 12:24:56,127 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 12:24:56,239 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 12:24:56,240 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 12:24:56,550 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 12:24:56,906 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 12:24:56,906 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 12:24:56,908 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:24:56 BoogieIcfgContainer
[2023-04-01 12:24:56,908 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 12:24:56,911 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 12:24:56,911 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 12:24:56,913 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 12:24:56,914 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:24:55" (1/3) ...
[2023-04-01 12:24:56,914 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4ed3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:24:56, skipping insertion in model container
[2023-04-01 12:24:56,915 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:24:56" (2/3) ...
[2023-04-01 12:24:56,915 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4ed3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:24:56, skipping insertion in model container
[2023-04-01 12:24:56,915 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:24:56" (3/3) ...
[2023-04-01 12:24:56,916 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c
[2023-04-01 12:24:56,929 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 12:24:56,929 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 12:24:56,971 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 12:24:56,978 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;@5caf7a0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 12:24:56,979 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 12:24:56,983 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 50 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11)
[2023-04-01 12:24:56,988 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2023-04-01 12:24:56,988 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 12:24:56,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 12:24:56,989 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 12:24:56,993 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 12:24:56,993 INFO  L85        PathProgramCache]: Analyzing trace with hash 593746526, now seen corresponding path program 1 times
[2023-04-01 12:24:56,999 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 12:24:56,999 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376119592]
[2023-04-01 12:24:57,000 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 12:24:57,000 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 12:24:57,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 12:24:59,757 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 12:24:59,758 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 12:24:59,758 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376119592]
[2023-04-01 12:24:59,759 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376119592] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 12:24:59,759 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 12:24:59,759 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25
[2023-04-01 12:24:59,761 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009870530]
[2023-04-01 12:24:59,761 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 12:24:59,764 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2023-04-01 12:24:59,764 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 12:24:59,799 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2023-04-01 12:24:59,800 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600
[2023-04-01 12:24:59,802 INFO  L87              Difference]: Start difference. First operand  has 50 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand  has 25 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 10 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2023-04-01 12:25:01,021 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 12:25:01,021 INFO  L93              Difference]: Finished difference Result 127 states and 142 transitions.
[2023-04-01 12:25:01,022 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. 
[2023-04-01 12:25:01,024 INFO  L78                 Accepts]: Start accepts. Automaton has  has 25 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 10 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 40
[2023-04-01 12:25:01,024 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 12:25:01,029 INFO  L225             Difference]: With dead ends: 127
[2023-04-01 12:25:01,029 INFO  L226             Difference]: Without dead ends: 81
[2023-04-01 12:25:01,032 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=471, Invalid=1979, Unknown=0, NotChecked=0, Total=2450
[2023-04-01 12:25:01,034 INFO  L413           NwaCegarLoop]: 26 mSDtfsCounter, 424 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-04-01 12:25:01,035 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 149 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-04-01 12:25:01,048 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2023-04-01 12:25:01,070 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69.
[2023-04-01 12:25:01,071 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 69 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 36 states have internal predecessors, (39), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (17), 15 states have call predecessors, (17), 16 states have call successors, (17)
[2023-04-01 12:25:01,072 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions.
[2023-04-01 12:25:01,073 INFO  L78                 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 40
[2023-04-01 12:25:01,073 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 12:25:01,073 INFO  L495      AbstractCegarLoop]: Abstraction has 69 states and 73 transitions.
[2023-04-01 12:25:01,074 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 25 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 10 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2023-04-01 12:25:01,074 INFO  L276                IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions.
[2023-04-01 12:25:01,075 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2023-04-01 12:25:01,075 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 12:25:01,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 12:25:01,075 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 12:25:01,075 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 12:25:01,076 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 12:25:01,076 INFO  L85        PathProgramCache]: Analyzing trace with hash -1773538697, now seen corresponding path program 1 times
[2023-04-01 12:25:01,076 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 12:25:01,076 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741495285]
[2023-04-01 12:25:01,076 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 12:25:01,076 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 12:25:01,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 12:25:01,389 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 12:25:01,389 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 12:25:01,390 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741495285]
[2023-04-01 12:25:01,390 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741495285] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 12:25:01,391 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 12:25:01,391 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-04-01 12:25:01,391 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002114311]
[2023-04-01 12:25:01,392 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 12:25:01,395 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-04-01 12:25:01,395 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 12:25:01,403 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-04-01 12:25:01,404 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110
[2023-04-01 12:25:01,404 INFO  L87              Difference]: Start difference. First operand 69 states and 73 transitions. Second operand  has 11 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9)
[2023-04-01 12:25:01,665 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 12:25:01,665 INFO  L93              Difference]: Finished difference Result 137 states and 148 transitions.
[2023-04-01 12:25:01,665 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-04-01 12:25:01,665 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 42
[2023-04-01 12:25:01,666 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 12:25:01,667 INFO  L225             Difference]: With dead ends: 137
[2023-04-01 12:25:01,667 INFO  L226             Difference]: Without dead ends: 101
[2023-04-01 12:25:01,667 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272
[2023-04-01 12:25:01,668 INFO  L413           NwaCegarLoop]: 25 mSDtfsCounter, 76 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-04-01 12:25:01,668 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 108 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-04-01 12:25:01,669 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2023-04-01 12:25:01,681 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 72.
[2023-04-01 12:25:01,681 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 72 states, 38 states have (on average 1.131578947368421) internal successors, (43), 39 states have internal predecessors, (43), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16)
[2023-04-01 12:25:01,697 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions.
[2023-04-01 12:25:01,697 INFO  L78                 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 42
[2023-04-01 12:25:01,697 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 12:25:01,697 INFO  L495      AbstractCegarLoop]: Abstraction has 72 states and 76 transitions.
[2023-04-01 12:25:01,697 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9)
[2023-04-01 12:25:01,698 INFO  L276                IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions.
[2023-04-01 12:25:01,698 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2023-04-01 12:25:01,698 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 12:25:01,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 12:25:01,698 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-01 12:25:01,699 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 12:25:01,699 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 12:25:01,699 INFO  L85        PathProgramCache]: Analyzing trace with hash -1887313434, now seen corresponding path program 1 times
[2023-04-01 12:25:01,699 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 12:25:01,699 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167678713]
[2023-04-01 12:25:01,699 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 12:25:01,699 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 12:25:01,771 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 12:25:03,328 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 12:25:03,328 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 12:25:03,328 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167678713]
[2023-04-01 12:25:03,328 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167678713] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 12:25:03,328 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 12:25:03,328 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23
[2023-04-01 12:25:03,328 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479471547]
[2023-04-01 12:25:03,329 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 12:25:03,329 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2023-04-01 12:25:03,329 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 12:25:03,330 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2023-04-01 12:25:03,330 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506
[2023-04-01 12:25:03,330 INFO  L87              Difference]: Start difference. First operand 72 states and 76 transitions. Second operand  has 23 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9)
[2023-04-01 12:25:04,136 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 12:25:04,137 INFO  L93              Difference]: Finished difference Result 137 states and 146 transitions.
[2023-04-01 12:25:04,137 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2023-04-01 12:25:04,137 INFO  L78                 Accepts]: Start accepts. Automaton has  has 23 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 42
[2023-04-01 12:25:04,138 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 12:25:04,138 INFO  L225             Difference]: With dead ends: 137
[2023-04-01 12:25:04,138 INFO  L226             Difference]: Without dead ends: 101
[2023-04-01 12:25:04,139 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=336, Invalid=1070, Unknown=0, NotChecked=0, Total=1406
[2023-04-01 12:25:04,140 INFO  L413           NwaCegarLoop]: 25 mSDtfsCounter, 376 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-04-01 12:25:04,140 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 158 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-04-01 12:25:04,141 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2023-04-01 12:25:04,181 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 72.
[2023-04-01 12:25:04,181 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 72 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16)
[2023-04-01 12:25:04,183 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions.
[2023-04-01 12:25:04,183 INFO  L78                 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 42
[2023-04-01 12:25:04,183 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 12:25:04,184 INFO  L495      AbstractCegarLoop]: Abstraction has 72 states and 75 transitions.
[2023-04-01 12:25:04,185 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 23 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 9 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9)
[2023-04-01 12:25:04,186 INFO  L276                IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions.
[2023-04-01 12:25:04,187 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2023-04-01 12:25:04,187 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 12:25:04,188 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 12:25:04,188 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-01 12:25:04,188 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 12:25:04,189 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 12:25:04,189 INFO  L85        PathProgramCache]: Analyzing trace with hash 798510064, now seen corresponding path program 1 times
[2023-04-01 12:25:04,190 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 12:25:04,190 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118530861]
[2023-04-01 12:25:04,190 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 12:25:04,190 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 12:25:04,207 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 12:25:04,921 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 12:25:04,921 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 12:25:04,921 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118530861]
[2023-04-01 12:25:04,921 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118530861] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 12:25:04,922 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 12:25:04,922 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2023-04-01 12:25:04,922 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40731639]
[2023-04-01 12:25:04,922 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 12:25:04,922 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-04-01 12:25:04,922 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 12:25:04,923 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-04-01 12:25:04,923 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156
[2023-04-01 12:25:04,923 INFO  L87              Difference]: Start difference. First operand 72 states and 75 transitions. Second operand  has 13 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)
[2023-04-01 12:25:05,179 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 12:25:05,179 INFO  L93              Difference]: Finished difference Result 112 states and 125 transitions.
[2023-04-01 12:25:05,179 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2023-04-01 12:25:05,180 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 43
[2023-04-01 12:25:05,182 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 12:25:05,185 INFO  L225             Difference]: With dead ends: 112
[2023-04-01 12:25:05,185 INFO  L226             Difference]: Without dead ends: 110
[2023-04-01 12:25:05,186 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462
[2023-04-01 12:25:05,193 INFO  L413           NwaCegarLoop]: 52 mSDtfsCounter, 39 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-01 12:25:05,194 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 568 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-01 12:25:05,197 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2023-04-01 12:25:05,215 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 81.
[2023-04-01 12:25:05,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 46 states have internal predecessors, (48), 18 states have call successors, (18), 18 states have call predecessors, (18), 18 states have return successors, (18), 16 states have call predecessors, (18), 17 states have call successors, (18)
[2023-04-01 12:25:05,216 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions.
[2023-04-01 12:25:05,216 INFO  L78                 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 43
[2023-04-01 12:25:05,216 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 12:25:05,216 INFO  L495      AbstractCegarLoop]: Abstraction has 81 states and 84 transitions.
[2023-04-01 12:25:05,216 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)
[2023-04-01 12:25:05,216 INFO  L276                IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions.
[2023-04-01 12:25:05,217 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2023-04-01 12:25:05,217 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 12:25:05,217 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1]
[2023-04-01 12:25:05,217 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-01 12:25:05,217 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 12:25:05,218 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 12:25:05,218 INFO  L85        PathProgramCache]: Analyzing trace with hash -452782545, now seen corresponding path program 1 times
[2023-04-01 12:25:05,218 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 12:25:05,218 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969729968]
[2023-04-01 12:25:05,218 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 12:25:05,218 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 12:25:05,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 12:25:12,083 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-04-01 12:25:12,083 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 12:25:12,084 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969729968]
[2023-04-01 12:25:12,084 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969729968] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 12:25:12,084 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120492856]
[2023-04-01 12:25:12,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 12:25:12,084 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 12:25:12,084 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 12:25:12,089 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 12:25:12,091 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 12:25:12,316 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 12:25:12,323 INFO  L262         TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 190 conjunts are in the unsatisfiable core
[2023-04-01 12:25:12,335 INFO  L285         TraceCheckSpWp]: Computing forward predicates...