/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.ufo.BOUNDED-8.pals.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-03 01:50:23,953 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-03 01:50:23,954 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-03 01:50:23,971 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-03 01:50:23,971 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-03 01:50:23,971 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-03 01:50:23,972 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-03 01:50:23,981 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-03 01:50:23,982 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-03 01:50:23,982 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-03 01:50:23,983 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-03 01:50:23,984 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-03 01:50:23,984 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2023-04-03 01:50:23,985 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-03 01:50:23,986 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-03 01:50:23,986 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-03 01:50:23,987 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-03 01:50:23,988 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-03 01:50:23,989 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-03 01:50:23,990 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-03 01:50:23,990 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-03 01:50:23,991 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-03 01:50:23,992 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-03 01:50:23,994 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-03 01:50:23,994 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-04-03 01:50:23,999 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-03 01:50:24,000 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-03 01:50:24,013 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 01:50:24,026 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-03 01:50:24,026 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-03 01:50:24,026 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-03 01:50:24,026 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-03 01:50:24,026 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-03 01:50:24,027 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-03 01:50:24,027 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-03 01:50:24,027 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-03 01:50:24,027 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-03 01:50:24,027 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-03 01:50:24,027 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-03 01:50:24,027 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-03 01:50:24,027 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-03 01:50:24,027 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-03 01:50:24,027 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-03 01:50:24,027 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-03 01:50:24,028 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-03 01:50:24,028 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-03 01:50:24,028 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-03 01:50:24,028 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-03 01:50:24,028 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-03 01:50:24,028 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-03 01:50:24,028 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-03 01:50:24,028 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-03 01:50:24,029 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-03 01:50:24,029 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-03 01:50:24,029 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-03 01:50:24,029 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-03 01:50:24,029 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-03 01:50:24,029 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-03 01:50:24,029 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-03 01:50:24,029 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-03 01:50:24,029 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-03 01:50:24,029 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-03 01:50:24,029 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-03 01:50:24,029 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-03 01:50:24,030 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-03 01:50:24,030 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-03 01:50:24,030 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-03 01:50:24,030 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-03 01:50:24,030 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-03 01:50:24,030 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-03 01:50:24,187 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-03 01:50:24,210 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-03 01:50:24,211 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-03 01:50:24,212 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-03 01:50:24,213 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-03 01:50:24,214 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c
[2023-04-03 01:50:25,240 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-03 01:50:25,408 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-03 01:50:25,408 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.ufo.BOUNDED-8.pals.c
[2023-04-03 01:50:25,414 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fefe0f37/ff5ad1e62b5f4d408473e81452db9dc6/FLAG5eea5115b
[2023-04-03 01:50:25,422 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fefe0f37/ff5ad1e62b5f4d408473e81452db9dc6
[2023-04-03 01:50:25,424 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-03 01:50:25,425 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-03 01:50:25,426 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-03 01:50:25,426 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-03 01:50:25,434 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-03 01:50:25,434 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:50:25" (1/1) ...
[2023-04-03 01:50:25,435 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f72c0e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:25, skipping insertion in model container
[2023-04-03 01:50:25,435 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:50:25" (1/1) ...
[2023-04-03 01:50:25,439 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-03 01:50:25,454 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-03 01:50:25,587 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.ufo.BOUNDED-8.pals.c[8209,8222]
[2023-04-03 01:50:25,590 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-03 01:50:25,598 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-03 01:50:25,632 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.ufo.BOUNDED-8.pals.c[8209,8222]
[2023-04-03 01:50:25,633 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-03 01:50:25,642 INFO  L208         MainTranslator]: Completed translation
[2023-04-03 01:50:25,642 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:25 WrapperNode
[2023-04-03 01:50:25,642 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-03 01:50:25,643 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-03 01:50:25,643 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-03 01:50:25,643 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-03 01:50:25,650 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:25" (1/1) ...
[2023-04-03 01:50:25,651 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:25" (1/1) ...
[2023-04-03 01:50:25,655 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:25" (1/1) ...
[2023-04-03 01:50:25,656 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:25" (1/1) ...
[2023-04-03 01:50:25,661 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:25" (1/1) ...
[2023-04-03 01:50:25,665 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:25" (1/1) ...
[2023-04-03 01:50:25,666 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:25" (1/1) ...
[2023-04-03 01:50:25,667 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:25" (1/1) ...
[2023-04-03 01:50:25,669 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-03 01:50:25,670 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-03 01:50:25,670 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-03 01:50:25,670 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-03 01:50:25,670 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:25" (1/1) ...
[2023-04-03 01:50:25,674 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-03 01:50:25,682 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-03 01:50:25,691 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 01:50:25,707 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 01:50:25,715 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-03 01:50:25,715 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-03 01:50:25,716 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-03 01:50:25,716 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-03 01:50:25,716 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-03 01:50:25,716 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-03 01:50:25,716 INFO  L138     BoogieDeclarations]: Found implementation of procedure node4
[2023-04-03 01:50:25,716 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-03 01:50:25,716 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-03 01:50:25,716 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-03 01:50:25,716 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-03 01:50:25,716 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-03 01:50:25,716 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-03 01:50:25,716 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-03 01:50:25,716 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-03 01:50:25,717 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-03 01:50:25,717 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-03 01:50:25,717 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-03 01:50:25,717 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-03 01:50:25,717 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-03 01:50:25,717 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-03 01:50:25,717 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-03 01:50:25,717 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-03 01:50:25,717 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2023-04-03 01:50:25,717 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-03 01:50:25,717 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-03 01:50:25,717 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-03 01:50:25,717 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-03 01:50:25,718 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-03 01:50:25,718 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-03 01:50:25,718 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-03 01:50:25,718 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-03 01:50:25,718 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-03 01:50:25,776 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-03 01:50:25,778 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-03 01:50:26,161 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-03 01:50:26,400 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-03 01:50:26,401 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-03 01:50:26,404 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:50:26 BoogieIcfgContainer
[2023-04-03 01:50:26,404 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-03 01:50:26,406 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-03 01:50:26,407 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-03 01:50:26,409 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-03 01:50:26,409 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:50:25" (1/3) ...
[2023-04-03 01:50:26,409 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf94c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:50:26, skipping insertion in model container
[2023-04-03 01:50:26,409 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:50:25" (2/3) ...
[2023-04-03 01:50:26,409 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf94c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:50:26, skipping insertion in model container
[2023-04-03 01:50:26,410 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:50:26" (3/3) ...
[2023-04-03 01:50:26,412 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c
[2023-04-03 01:50:26,424 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-03 01:50:26,424 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-03 01:50:26,458 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-03 01:50:26,463 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;@603cdad1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-03 01:50:26,464 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-03 01:50:26,467 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 01:50:26,473 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2023-04-03 01:50:26,473 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:50:26,474 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 01:50:26,474 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:50:26,479 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:50:26,479 INFO  L85        PathProgramCache]: Analyzing trace with hash 1679856410, now seen corresponding path program 1 times
[2023-04-03 01:50:26,485 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:50:26,485 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691205174]
[2023-04-03 01:50:26,485 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:50:26,486 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:50:26,762 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:50:28,313 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 01:50:28,314 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:50:28,314 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691205174]
[2023-04-03 01:50:28,314 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691205174] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:50:28,314 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:50:28,314 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2023-04-03 01:50:28,316 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113454533]
[2023-04-03 01:50:28,316 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:50:28,319 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2023-04-03 01:50:28,319 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:50:28,350 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2023-04-03 01:50:28,351 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342
[2023-04-03 01:50:28,352 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 01:50:29,233 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:50:29,234 INFO  L93              Difference]: Finished difference Result 134 states and 154 transitions.
[2023-04-03 01:50:29,235 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. 
[2023-04-03 01:50:29,235 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 01:50:29,236 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:50:29,241 INFO  L225             Difference]: With dead ends: 134
[2023-04-03 01:50:29,241 INFO  L226             Difference]: Without dead ends: 88
[2023-04-03 01:50:29,243 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=360, Invalid=1362, Unknown=0, NotChecked=0, Total=1722
[2023-04-03 01:50:29,245 INFO  L413           NwaCegarLoop]: 24 mSDtfsCounter, 441 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-04-03 01:50:29,246 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 105 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-04-03 01:50:29,257 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2023-04-03 01:50:29,277 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 62.
[2023-04-03 01:50:29,277 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 01:50:29,278 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions.
[2023-04-03 01:50:29,279 INFO  L78                 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 33
[2023-04-03 01:50:29,280 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:50:29,280 INFO  L495      AbstractCegarLoop]: Abstraction has 62 states and 68 transitions.
[2023-04-03 01:50:29,280 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 01:50:29,280 INFO  L276                IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions.
[2023-04-03 01:50:29,281 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2023-04-03 01:50:29,281 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:50:29,281 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 01:50:29,281 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-03 01:50:29,282 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:50:29,282 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:50:29,282 INFO  L85        PathProgramCache]: Analyzing trace with hash -547117662, now seen corresponding path program 1 times
[2023-04-03 01:50:29,282 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:50:29,282 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51275304]
[2023-04-03 01:50:29,282 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:50:29,283 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:50:29,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:50:29,494 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 01:50:29,494 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:50:29,495 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51275304]
[2023-04-03 01:50:29,495 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51275304] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:50:29,495 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:50:29,495 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-04-03 01:50:29,495 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081093807]
[2023-04-03 01:50:29,495 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:50:29,496 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-04-03 01:50:29,496 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:50:29,497 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-04-03 01:50:29,497 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2023-04-03 01:50:29,497 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 01:50:29,688 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:50:29,688 INFO  L93              Difference]: Finished difference Result 125 states and 136 transitions.
[2023-04-03 01:50:29,689 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-04-03 01:50:29,689 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 01:50:29,689 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:50:29,690 INFO  L225             Difference]: With dead ends: 125
[2023-04-03 01:50:29,690 INFO  L226             Difference]: Without dead ends: 91
[2023-04-03 01:50:29,691 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 01:50:29,691 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 105 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-03 01:50:29,692 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 69 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-03 01:50:29,692 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2023-04-03 01:50:29,702 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 62.
[2023-04-03 01:50:29,702 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 01:50:29,703 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions.
[2023-04-03 01:50:29,703 INFO  L78                 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 35
[2023-04-03 01:50:29,703 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:50:29,703 INFO  L495      AbstractCegarLoop]: Abstraction has 62 states and 66 transitions.
[2023-04-03 01:50:29,703 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 01:50:29,703 INFO  L276                IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions.
[2023-04-03 01:50:29,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2023-04-03 01:50:29,704 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:50:29,704 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 01:50:29,704 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-03 01:50:29,704 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:50:29,704 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:50:29,705 INFO  L85        PathProgramCache]: Analyzing trace with hash -288541150, now seen corresponding path program 1 times
[2023-04-03 01:50:29,705 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:50:29,705 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912753741]
[2023-04-03 01:50:29,705 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:50:29,705 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:50:29,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:50:30,625 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 01:50:30,625 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:50:30,625 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912753741]
[2023-04-03 01:50:30,626 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912753741] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:50:30,626 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:50:30,626 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2023-04-03 01:50:30,626 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097528969]
[2023-04-03 01:50:30,626 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:50:30,626 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2023-04-03 01:50:30,626 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:50:30,627 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2023-04-03 01:50:30,627 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342
[2023-04-03 01:50:30,627 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 01:50:31,333 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:50:31,333 INFO  L93              Difference]: Finished difference Result 129 states and 140 transitions.
[2023-04-03 01:50:31,334 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2023-04-03 01:50:31,334 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 01:50:31,334 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:50:31,335 INFO  L225             Difference]: With dead ends: 129
[2023-04-03 01:50:31,335 INFO  L226             Difference]: Without dead ends: 96
[2023-04-03 01:50:31,336 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=299, Invalid=1183, Unknown=0, NotChecked=0, Total=1482
[2023-04-03 01:50:31,337 INFO  L413           NwaCegarLoop]: 21 mSDtfsCounter, 408 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-04-03 01:50:31,337 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 86 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-04-03 01:50:31,338 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2023-04-03 01:50:31,348 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 62.
[2023-04-03 01:50:31,348 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 01:50:31,349 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions.
[2023-04-03 01:50:31,349 INFO  L78                 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 35
[2023-04-03 01:50:31,349 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:50:31,349 INFO  L495      AbstractCegarLoop]: Abstraction has 62 states and 65 transitions.
[2023-04-03 01:50:31,349 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 01:50:31,350 INFO  L276                IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions.
[2023-04-03 01:50:31,350 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2023-04-03 01:50:31,350 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:50:31,350 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 01:50:31,350 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-03 01:50:31,350 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:50:31,351 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:50:31,351 INFO  L85        PathProgramCache]: Analyzing trace with hash -1638093577, now seen corresponding path program 1 times
[2023-04-03 01:50:31,351 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:50:31,351 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609767372]
[2023-04-03 01:50:31,351 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:50:31,351 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:50:31,363 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:50:31,525 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 01:50:31,525 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:50:31,525 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609767372]
[2023-04-03 01:50:31,525 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609767372] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:50:31,526 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:50:31,526 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-04-03 01:50:31,526 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530032713]
[2023-04-03 01:50:31,526 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:50:31,526 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-04-03 01:50:31,526 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:50:31,527 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-04-03 01:50:31,527 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-04-03 01:50:31,527 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 01:50:31,644 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:50:31,644 INFO  L93              Difference]: Finished difference Result 98 states and 109 transitions.
[2023-04-03 01:50:31,644 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-04-03 01:50:31,645 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 01:50:31,645 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:50:31,645 INFO  L225             Difference]: With dead ends: 98
[2023-04-03 01:50:31,646 INFO  L226             Difference]: Without dead ends: 96
[2023-04-03 01:50:31,646 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 01:50:31,647 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 01:50:31,647 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 01:50:31,647 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2023-04-03 01:50:31,662 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71.
[2023-04-03 01:50:31,663 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 01:50:31,663 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions.
[2023-04-03 01:50:31,663 INFO  L78                 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 36
[2023-04-03 01:50:31,663 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:50:31,664 INFO  L495      AbstractCegarLoop]: Abstraction has 71 states and 74 transitions.
[2023-04-03 01:50:31,664 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 01:50:31,664 INFO  L276                IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions.
[2023-04-03 01:50:31,665 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2023-04-03 01:50:31,665 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:50:31,665 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 01:50:31,665 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-03 01:50:31,665 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:50:31,666 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:50:31,666 INFO  L85        PathProgramCache]: Analyzing trace with hash 528830886, now seen corresponding path program 1 times
[2023-04-03 01:50:31,666 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:50:31,666 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348370285]
[2023-04-03 01:50:31,666 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:50:31,666 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:50:31,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:50:36,878 INFO  L134       CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-04-03 01:50:36,878 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:50:36,878 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348370285]
[2023-04-03 01:50:36,878 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348370285] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-03 01:50:36,878 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840041365]
[2023-04-03 01:50:36,878 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:50:36,879 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-03 01:50:36,879 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-03 01:50:36,897 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 01:50:36,913 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 01:50:37,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:50:37,089 INFO  L262         TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 166 conjunts are in the unsatisfiable core
[2023-04-03 01:50:37,097 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-03 01:50:55,048 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 01:50:55,049 INFO  L327         TraceCheckSpWp]: Computing backward predicates...