/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/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-03 01:49:59,277 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-03 01:49:59,278 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-03 01:49:59,307 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-03 01:49:59,307 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-03 01:49:59,309 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-03 01:49:59,312 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-03 01:49:59,314 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-03 01:49:59,315 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-03 01:49:59,318 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-03 01:49:59,320 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-03 01:49:59,321 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-03 01:49:59,321 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-04-03 01:49:59,323 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-04-03 01:49:59,323 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-03 01:49:59,324 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-03 01:49:59,325 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-03 01:49:59,325 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-03 01:49:59,327 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-03 01:49:59,330 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-03 01:49:59,331 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-03 01:49:59,331 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-03 01:49:59,332 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-03 01:49:59,333 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-03 01:49:59,339 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-03 01:49:59,339 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-04-03 01:49:59,341 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-03 01:49:59,341 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2023-04-03 01:49:59,342 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-03 01:49:59,343 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-03 01:49:59,344 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2023-04-03 01:49:59,344 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-03 01:49:59,345 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-03 01:49:59,346 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
[2023-04-03 01:49:59,368 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-03 01:49:59,369 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-03 01:49:59,369 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-03 01:49:59,369 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-03 01:49:59,370 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-03 01:49:59,370 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-03 01:49:59,370 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-03 01:49:59,370 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-03 01:49:59,370 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-03 01:49:59,370 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-03 01:49:59,371 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-03 01:49:59,371 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-03 01:49:59,371 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-03 01:49:59,371 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-03 01:49:59,371 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-03 01:49:59,371 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-03 01:49:59,371 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-03 01:49:59,371 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-03 01:49:59,372 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-03 01:49:59,372 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-03 01:49:59,372 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-03 01:49:59,372 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-03 01:49:59,372 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-03 01:49:59,372 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-03 01:49:59,372 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-03 01:49:59,372 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-03 01:49:59,373 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-03 01:49:59,373 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-03 01:49:59,373 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-03 01:49:59,373 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-03 01:49:59,373 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-03 01:49:59,373 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-03 01:49:59,373 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-03 01:49:59,373 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-03 01:49:59,373 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-03 01:49:59,373 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-03 01:49:59,373 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-03 01:49:59,374 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-03 01:49:59,374 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-03 01:49:59,374 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-03 01:49:59,374 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-03 01:49:59,374 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-03 01:49:59,557 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-03 01:49:59,581 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-03 01:49:59,583 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-03 01:49:59,584 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-03 01:49:59,585 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-03 01:49:59,586 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c
[2023-04-03 01:50:00,498 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-03 01:50:00,783 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-03 01:50:00,783 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c
[2023-04-03 01:50:00,788 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe8e551d/143ce7273b3846ba9bd497c67bb6efaa/FLAGf65b96048
[2023-04-03 01:50:00,797 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe8e551d/143ce7273b3846ba9bd497c67bb6efaa
[2023-04-03 01:50:00,799 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-03 01:50:00,800 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-03 01:50:00,800 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-03 01:50:00,801 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-03 01:50:00,803 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-03 01:50:00,803 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:50:00" (1/1) ...
[2023-04-03 01:50:00,804 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@477f1fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:00, skipping insertion in model container
[2023-04-03 01:50:00,804 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:50:00" (1/1) ...
[2023-04-03 01:50:00,808 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-03 01:50:00,842 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-03 01:50:01,000 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.4.1.ufo.BOUNDED-8.pals.c[8246,8259]
[2023-04-03 01:50:01,003 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-03 01:50:01,015 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-03 01:50:01,072 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.4.1.ufo.BOUNDED-8.pals.c[8246,8259]
[2023-04-03 01:50:01,073 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-03 01:50:01,083 INFO  L208         MainTranslator]: Completed translation
[2023-04-03 01:50:01,083 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:01 WrapperNode
[2023-04-03 01:50:01,083 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-03 01:50:01,084 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-03 01:50:01,084 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-03 01:50:01,084 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-03 01:50:01,109 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:01" (1/1) ...
[2023-04-03 01:50:01,109 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:01" (1/1) ...
[2023-04-03 01:50:01,114 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:01" (1/1) ...
[2023-04-03 01:50:01,115 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:01" (1/1) ...
[2023-04-03 01:50:01,120 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:01" (1/1) ...
[2023-04-03 01:50:01,124 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:01" (1/1) ...
[2023-04-03 01:50:01,125 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:01" (1/1) ...
[2023-04-03 01:50:01,126 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:01" (1/1) ...
[2023-04-03 01:50:01,128 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-03 01:50:01,128 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-03 01:50:01,128 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-03 01:50:01,128 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-03 01:50:01,129 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:01" (1/1) ...
[2023-04-03 01:50:01,133 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-03 01:50:01,141 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-03 01:50:01,162 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)
[2023-04-03 01:50:01,181 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
[2023-04-03 01:50:01,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-03 01:50:01,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-03 01:50:01,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-03 01:50:01,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-03 01:50:01,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-03 01:50:01,202 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-03 01:50:01,202 INFO  L138     BoogieDeclarations]: Found implementation of procedure node4
[2023-04-03 01:50:01,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-03 01:50:01,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-03 01:50:01,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-03 01:50:01,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-03 01:50:01,203 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-03 01:50:01,203 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-03 01:50:01,203 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-03 01:50:01,203 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-03 01:50:01,203 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-03 01:50:01,204 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-03 01:50:01,204 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-03 01:50:01,204 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-03 01:50:01,204 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-03 01:50:01,204 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-03 01:50:01,204 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-03 01:50:01,205 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-03 01:50:01,205 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2023-04-03 01:50:01,205 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-03 01:50:01,205 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-03 01:50:01,205 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-03 01:50:01,205 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-03 01:50:01,205 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-03 01:50:01,205 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-03 01:50:01,205 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-03 01:50:01,205 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-03 01:50:01,205 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-03 01:50:01,297 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-03 01:50:01,299 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-03 01:50:01,596 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-03 01:50:01,837 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-03 01:50:01,837 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-03 01:50:01,839 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:50:01 BoogieIcfgContainer
[2023-04-03 01:50:01,839 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-03 01:50:01,843 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-03 01:50:01,844 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-03 01:50:01,846 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-03 01:50:01,846 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:50:00" (1/3) ...
[2023-04-03 01:50:01,846 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4c3ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:50:01, skipping insertion in model container
[2023-04-03 01:50:01,846 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:01" (2/3) ...
[2023-04-03 01:50:01,846 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4c3ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:50:01, skipping insertion in model container
[2023-04-03 01:50:01,846 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:50:01" (3/3) ...
[2023-04-03 01:50:01,847 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c
[2023-04-03 01:50:01,858 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-03 01:50:01,859 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-03 01:50:01,894 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-03 01:50:01,899 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;@1e04daed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-03 01:50:01,899 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-03 01:50:01,902 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 43 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9)
[2023-04-03 01:50:01,907 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2023-04-03 01:50:01,908 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:50:01,908 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]
[2023-04-03 01:50:01,909 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:50:01,913 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:50:01,913 INFO  L85        PathProgramCache]: Analyzing trace with hash 106693390, now seen corresponding path program 1 times
[2023-04-03 01:50:01,919 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:50:01,919 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194433281]
[2023-04-03 01:50:01,920 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:50:01,920 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:50:02,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:50:03,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:50:03,723 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:50:03,723 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194433281]
[2023-04-03 01:50:03,723 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194433281] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:50:03,723 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:50:03,723 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2023-04-03 01:50:03,725 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562037523]
[2023-04-03 01:50:03,725 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:50:03,728 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2023-04-03 01:50:03,728 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:50:03,746 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2023-04-03 01:50:03,747 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342
[2023-04-03 01:50:03,748 INFO  L87              Difference]: Start difference. First operand  has 43 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand  has 19 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 8 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-04-03 01:50:04,587 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:50:04,588 INFO  L93              Difference]: Finished difference Result 134 states and 154 transitions.
[2023-04-03 01:50:04,588 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2023-04-03 01:50:04,590 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 8 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 33
[2023-04-03 01:50:04,591 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:50:04,597 INFO  L225             Difference]: With dead ends: 134
[2023-04-03 01:50:04,597 INFO  L226             Difference]: Without dead ends: 88
[2023-04-03 01:50:04,601 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=346, Invalid=1294, Unknown=0, NotChecked=0, Total=1640
[2023-04-03 01:50:04,604 INFO  L413           NwaCegarLoop]: 24 mSDtfsCounter, 441 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-04-03 01:50:04,605 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 101 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-04-03 01:50:04,616 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2023-04-03 01:50:04,653 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 62.
[2023-04-03 01:50:04,654 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 62 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 states have internal predecessors, (40), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14)
[2023-04-03 01:50:04,657 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions.
[2023-04-03 01:50:04,657 INFO  L78                 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 33
[2023-04-03 01:50:04,658 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:50:04,658 INFO  L495      AbstractCegarLoop]: Abstraction has 62 states and 68 transitions.
[2023-04-03 01:50:04,658 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 8 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-04-03 01:50:04,658 INFO  L276                IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions.
[2023-04-03 01:50:04,659 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2023-04-03 01:50:04,659 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:50:04,659 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]
[2023-04-03 01:50:04,660 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-03 01:50:04,660 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:50:04,660 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:50:04,660 INFO  L85        PathProgramCache]: Analyzing trace with hash -2087511987, now seen corresponding path program 1 times
[2023-04-03 01:50:04,660 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:50:04,660 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942787585]
[2023-04-03 01:50:04,660 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:50:04,661 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:50:04,683 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:50:04,903 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:50:04,904 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:50:04,904 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942787585]
[2023-04-03 01:50:04,904 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942787585] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:50:04,904 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:50:04,904 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-04-03 01:50:04,904 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248517008]
[2023-04-03 01:50:04,905 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:50:04,905 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-04-03 01:50:04,906 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:50:04,906 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-04-03 01:50:04,906 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2023-04-03 01:50:04,907 INFO  L87              Difference]: Start difference. First operand 62 states and 68 transitions. Second operand  has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7)
[2023-04-03 01:50:05,097 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:50:05,097 INFO  L93              Difference]: Finished difference Result 125 states and 136 transitions.
[2023-04-03 01:50:05,098 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-04-03 01:50:05,098 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 35
[2023-04-03 01:50:05,098 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:50:05,099 INFO  L225             Difference]: With dead ends: 125
[2023-04-03 01:50:05,099 INFO  L226             Difference]: Without dead ends: 91
[2023-04-03 01:50:05,100 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2023-04-03 01:50:05,101 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 71 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-03 01:50:05,101 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 75 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-03 01:50:05,102 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2023-04-03 01:50:05,113 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 62.
[2023-04-03 01:50:05,113 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 62 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 states have internal predecessors, (39), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13)
[2023-04-03 01:50:05,114 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions.
[2023-04-03 01:50:05,114 INFO  L78                 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 35
[2023-04-03 01:50:05,114 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:50:05,114 INFO  L495      AbstractCegarLoop]: Abstraction has 62 states and 66 transitions.
[2023-04-03 01:50:05,115 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7)
[2023-04-03 01:50:05,115 INFO  L276                IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions.
[2023-04-03 01:50:05,115 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2023-04-03 01:50:05,115 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:50:05,115 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]
[2023-04-03 01:50:05,115 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-03 01:50:05,116 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:50:05,116 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:50:05,116 INFO  L85        PathProgramCache]: Analyzing trace with hash -269715178, now seen corresponding path program 1 times
[2023-04-03 01:50:05,116 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:50:05,116 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346368984]
[2023-04-03 01:50:05,116 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:50:05,116 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:50:05,140 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:50:06,005 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:50:06,005 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:50:06,005 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346368984]
[2023-04-03 01:50:06,005 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346368984] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:50:06,005 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:50:06,005 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2023-04-03 01:50:06,006 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089951650]
[2023-04-03 01:50:06,006 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:50:06,006 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2023-04-03 01:50:06,006 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:50:06,006 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2023-04-03 01:50:06,007 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342
[2023-04-03 01:50:06,007 INFO  L87              Difference]: Start difference. First operand 62 states and 66 transitions. Second operand  has 19 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 8 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-04-03 01:50:06,901 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:50:06,901 INFO  L93              Difference]: Finished difference Result 129 states and 140 transitions.
[2023-04-03 01:50:06,901 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2023-04-03 01:50:06,902 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 8 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 35
[2023-04-03 01:50:06,902 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:50:06,903 INFO  L225             Difference]: With dead ends: 129
[2023-04-03 01:50:06,903 INFO  L226             Difference]: Without dead ends: 96
[2023-04-03 01:50:06,904 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=340, Invalid=1300, Unknown=0, NotChecked=0, Total=1640
[2023-04-03 01:50:06,905 INFO  L413           NwaCegarLoop]: 21 mSDtfsCounter, 330 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-04-03 01:50:06,905 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 115 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-04-03 01:50:06,905 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2023-04-03 01:50:06,917 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 62.
[2023-04-03 01:50:06,918 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 62 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13)
[2023-04-03 01:50:06,918 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions.
[2023-04-03 01:50:06,918 INFO  L78                 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 35
[2023-04-03 01:50:06,918 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:50:06,918 INFO  L495      AbstractCegarLoop]: Abstraction has 62 states and 65 transitions.
[2023-04-03 01:50:06,919 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 8 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-04-03 01:50:06,919 INFO  L276                IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions.
[2023-04-03 01:50:06,919 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2023-04-03 01:50:06,919 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:50:06,919 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]
[2023-04-03 01:50:06,919 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-03 01:50:06,919 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:50:06,920 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:50:06,920 INFO  L85        PathProgramCache]: Analyzing trace with hash 1681258554, now seen corresponding path program 1 times
[2023-04-03 01:50:06,920 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:50:06,920 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807289041]
[2023-04-03 01:50:06,920 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:50:06,920 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:50:06,934 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:50:07,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:50:07,067 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:50:07,067 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807289041]
[2023-04-03 01:50:07,067 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807289041] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:50:07,067 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:50:07,067 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-04-03 01:50:07,067 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088165143]
[2023-04-03 01:50:07,067 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:50:07,067 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-04-03 01:50:07,068 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:50:07,068 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-04-03 01:50:07,068 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-04-03 01:50:07,068 INFO  L87              Difference]: Start difference. First operand 62 states and 65 transitions. Second operand  has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7)
[2023-04-03 01:50:07,210 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:50:07,210 INFO  L93              Difference]: Finished difference Result 98 states and 109 transitions.
[2023-04-03 01:50:07,210 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-04-03 01:50:07,210 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 36
[2023-04-03 01:50:07,211 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:50:07,211 INFO  L225             Difference]: With dead ends: 98
[2023-04-03 01:50:07,211 INFO  L226             Difference]: Without dead ends: 96
[2023-04-03 01:50:07,212 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240
[2023-04-03 01:50:07,213 INFO  L413           NwaCegarLoop]: 48 mSDtfsCounter, 35 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-03 01:50:07,213 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 352 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-03 01:50:07,213 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2023-04-03 01:50:07,230 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71.
[2023-04-03 01:50:07,231 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71 states, 40 states have (on average 1.1) internal successors, (44), 42 states have internal predecessors, (44), 15 states have call successors, (15), 15 states have call predecessors, (15), 15 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15)
[2023-04-03 01:50:07,231 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions.
[2023-04-03 01:50:07,231 INFO  L78                 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 36
[2023-04-03 01:50:07,231 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:50:07,232 INFO  L495      AbstractCegarLoop]: Abstraction has 71 states and 74 transitions.
[2023-04-03 01:50:07,232 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7)
[2023-04-03 01:50:07,232 INFO  L276                IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions.
[2023-04-03 01:50:07,233 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2023-04-03 01:50:07,233 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:50:07,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-03 01:50:07,233 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-03 01:50:07,233 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:50:07,234 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:50:07,234 INFO  L85        PathProgramCache]: Analyzing trace with hash -534446426, now seen corresponding path program 1 times
[2023-04-03 01:50:07,234 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:50:07,234 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101814362]
[2023-04-03 01:50:07,234 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:50:07,234 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:50:07,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:50:10,953 INFO  L134       CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-04-03 01:50:10,953 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:50:10,953 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101814362]
[2023-04-03 01:50:10,953 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101814362] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-03 01:50:10,954 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317668293]
[2023-04-03 01:50:10,954 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:50:10,954 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-03 01:50:10,954 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-03 01:50:10,974 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)
[2023-04-03 01:50:10,993 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-04-03 01:50:11,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:50:11,146 INFO  L262         TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 165 conjunts are in the unsatisfiable core
[2023-04-03 01:50:11,168 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-03 01:50:29,602 INFO  L134       CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:50:29,602 INFO  L327         TraceCheckSpWp]: Computing backward predicates...