/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.6.ufo.UNBOUNDED.pals.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 06:19:03,105 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 06:19:03,106 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-04-01 06:19:03,127 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 06:19:03,129 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 06:19:03,137 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-01 06:19:03,139 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-01 06:19:03,140 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-01 06:19:03,143 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-01 06:19:03,144 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-01 06:19:03,145 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-01 06:19:03,146 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-04-01 06:19:03,149 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-04-01 06:19:03,151 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-01 06:19:03,152 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 06:19:03,152 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 06:19:03,153 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 06:19:03,155 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-01 06:19:03,158 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-01 06:19:03,159 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-01 06:19:03,159 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-01 06:19:03,160 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 06:19:03,161 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 06:19:03,166 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 06:19:03,167 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-04-01 06:19:03,168 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-04-01 06:19:03,168 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-01 06:19:03,169 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-04-01 06:19:03,169 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-04-01 06:19:03,170 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 06:19:03,170 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-01 06:19:03,171 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-04-01 06:19:03,171 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2023-04-01 06:19:03,172 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 06:19:03,172 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 06:19:03,173 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf
[2023-04-01 06:19:03,198 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 06:19:03,198 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 06:19:03,198 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 06:19:03,198 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 06:19:03,199 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 06:19:03,199 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 06:19:03,199 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 06:19:03,199 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 06:19:03,199 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 06:19:03,199 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 06:19:03,199 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 06:19:03,199 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 06:19:03,199 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 06:19:03,199 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 06:19:03,199 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 06:19:03,200 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 06:19:03,200 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 06:19:03,200 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 06:19:03,200 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 06:19:03,200 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 06:19:03,200 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 06:19:03,200 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 06:19:03,200 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 06:19:03,201 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 06:19:03,201 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 06:19:03,201 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 06:19:03,201 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 06:19:03,201 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 06:19:03,201 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 06:19:03,201 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 06:19:03,201 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 06:19:03,201 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 06:19:03,201 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 06:19:03,201 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 06:19:03,202 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 06:19:03,202 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 06:19:03,202 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 06:19:03,202 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 06:19:03,202 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 06:19:03,202 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 06:19:03,202 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 06:19:03,202 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-01 06:19:03,401 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 06:19:03,427 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 06:19:03,428 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 06:19:03,429 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 06:19:03,430 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 06:19:03,431 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.UNBOUNDED.pals.c
[2023-04-01 06:19:04,464 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 06:19:04,651 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 06:19:04,652 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.ufo.UNBOUNDED.pals.c
[2023-04-01 06:19:04,658 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c451d0cf/04ca9b5934f34c58b87f6033858abce2/FLAG6befd5fb5
[2023-04-01 06:19:04,668 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c451d0cf/04ca9b5934f34c58b87f6033858abce2
[2023-04-01 06:19:04,670 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 06:19:04,671 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 06:19:04,672 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 06:19:04,672 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 06:19:04,687 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 06:19:04,687 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:19:04" (1/1) ...
[2023-04-01 06:19:04,688 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aeaaa48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:19:04, skipping insertion in model container
[2023-04-01 06:19:04,688 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:19:04" (1/1) ...
[2023-04-01 06:19:04,693 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 06:19:04,721 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 06:19:04,867 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.6.ufo.UNBOUNDED.pals.c[15103,15116]
[2023-04-01 06:19:04,870 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 06:19:04,877 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 06:19:04,910 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.6.ufo.UNBOUNDED.pals.c[15103,15116]
[2023-04-01 06:19:04,911 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 06:19:04,921 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 06:19:04,922 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:19:04 WrapperNode
[2023-04-01 06:19:04,922 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 06:19:04,922 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 06:19:04,922 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 06:19:04,923 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 06:19:04,930 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:19:04" (1/1) ...
[2023-04-01 06:19:04,931 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:19:04" (1/1) ...
[2023-04-01 06:19:04,937 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:19:04" (1/1) ...
[2023-04-01 06:19:04,937 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:19:04" (1/1) ...
[2023-04-01 06:19:04,947 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:19:04" (1/1) ...
[2023-04-01 06:19:04,964 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:19:04" (1/1) ...
[2023-04-01 06:19:04,966 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:19:04" (1/1) ...
[2023-04-01 06:19:04,967 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:19:04" (1/1) ...
[2023-04-01 06:19:04,969 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 06:19:04,970 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 06:19:04,970 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 06:19:04,970 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 06:19:04,971 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:19:04" (1/1) ...
[2023-04-01 06:19:04,984 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 06:19:04,994 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 06:19:05,004 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-04-01 06:19:05,009 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-04-01 06:19:05,032 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 06:19:05,032 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 06:19:05,032 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 06:19:05,033 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-04-01 06:19:05,034 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-01 06:19:05,034 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-01 06:19:05,034 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-01 06:19:05,034 INFO  L138     BoogieDeclarations]: Found implementation of procedure node4
[2023-04-01 06:19:05,034 INFO  L138     BoogieDeclarations]: Found implementation of procedure node5
[2023-04-01 06:19:05,034 INFO  L138     BoogieDeclarations]: Found implementation of procedure node6
[2023-04-01 06:19:05,034 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-01 06:19:05,035 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-01 06:19:05,035 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 06:19:05,035 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-01 06:19:05,035 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 06:19:05,035 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 06:19:05,035 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 06:19:05,035 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 06:19:05,035 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-01 06:19:05,035 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-01 06:19:05,035 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2023-04-01 06:19:05,035 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-01 06:19:05,035 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-04-01 06:19:05,035 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-01 06:19:05,036 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-01 06:19:05,036 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-01 06:19:05,036 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-01 06:19:05,036 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-01 06:19:05,036 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2023-04-01 06:19:05,036 INFO  L130     BoogieDeclarations]: Found specification of procedure node5
[2023-04-01 06:19:05,036 INFO  L130     BoogieDeclarations]: Found specification of procedure node6
[2023-04-01 06:19:05,036 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-01 06:19:05,036 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-01 06:19:05,036 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 06:19:05,036 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 06:19:05,036 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 06:19:05,037 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 06:19:05,037 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 06:19:05,037 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 06:19:05,037 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 06:19:05,144 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 06:19:05,145 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 06:19:05,532 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 06:19:05,856 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 06:19:05,856 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 06:19:05,858 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:19:05 BoogieIcfgContainer
[2023-04-01 06:19:05,858 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 06:19:05,861 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 06:19:05,862 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 06:19:05,864 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 06:19:05,864 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:19:04" (1/3) ...
[2023-04-01 06:19:05,865 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc54d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:19:05, skipping insertion in model container
[2023-04-01 06:19:05,865 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:19:04" (2/3) ...
[2023-04-01 06:19:05,865 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc54d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:19:05, skipping insertion in model container
[2023-04-01 06:19:05,866 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:19:05" (3/3) ...
[2023-04-01 06:19:05,867 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c
[2023-04-01 06:19:05,879 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 06:19:05,879 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 06:19:05,921 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 06:19:05,928 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;@1e0ae592, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 06:19:05,928 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 06:19:05,932 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 52 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2023-04-01 06:19:05,938 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2023-04-01 06:19:05,938 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:19:05,939 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 06:19:05,940 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:19:05,945 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:19:05,945 INFO  L85        PathProgramCache]: Analyzing trace with hash -1670604334, now seen corresponding path program 1 times
[2023-04-01 06:19:05,952 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:19:05,952 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40990855]
[2023-04-01 06:19:05,952 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:19:05,952 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:19:06,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:19:09,962 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 06:19:09,963 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:19:09,963 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40990855]
[2023-04-01 06:19:09,963 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40990855] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 06:19:09,964 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 06:19:09,964 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2023-04-01 06:19:09,965 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335755875]
[2023-04-01 06:19:09,965 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 06:19:09,968 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2023-04-01 06:19:09,968 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 06:19:10,014 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2023-04-01 06:19:10,016 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756
[2023-04-01 06:19:10,017 INFO  L87              Difference]: Start difference. First operand  has 52 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 28 states have internal predecessors, (32), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand  has 28 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-04-01 06:19:11,352 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 06:19:11,353 INFO  L93              Difference]: Finished difference Result 140 states and 163 transitions.
[2023-04-01 06:19:11,354 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2023-04-01 06:19:11,355 INFO  L78                 Accepts]: Start accepts. Automaton has  has 28 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 43
[2023-04-01 06:19:11,355 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 06:19:11,361 INFO  L225             Difference]: With dead ends: 140
[2023-04-01 06:19:11,361 INFO  L226             Difference]: Without dead ends: 101
[2023-04-01 06:19:11,363 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=436, Invalid=1916, Unknown=0, NotChecked=0, Total=2352
[2023-04-01 06:19:11,366 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 510 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-04-01 06:19:11,366 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 128 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-04-01 06:19:11,379 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2023-04-01 06:19:11,405 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 77.
[2023-04-01 06:19:11,406 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 40 states have internal predecessors, (45), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18)
[2023-04-01 06:19:11,407 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions.
[2023-04-01 06:19:11,408 INFO  L78                 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 43
[2023-04-01 06:19:11,408 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 06:19:11,408 INFO  L495      AbstractCegarLoop]: Abstraction has 77 states and 82 transitions.
[2023-04-01 06:19:11,409 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 28 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-04-01 06:19:11,409 INFO  L276                IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions.
[2023-04-01 06:19:11,410 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2023-04-01 06:19:11,410 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:19:11,410 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 06:19:11,410 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 06:19:11,410 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:19:11,411 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:19:11,411 INFO  L85        PathProgramCache]: Analyzing trace with hash -324569160, now seen corresponding path program 1 times
[2023-04-01 06:19:11,411 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:19:11,411 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575625377]
[2023-04-01 06:19:11,411 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:19:11,411 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:19:11,486 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:19:11,970 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 06:19:11,970 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:19:11,970 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575625377]
[2023-04-01 06:19:11,970 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575625377] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 06:19:11,970 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 06:19:11,970 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-04-01 06:19:11,971 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564351885]
[2023-04-01 06:19:11,971 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 06:19:11,972 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-04-01 06:19:11,972 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 06:19:11,972 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-04-01 06:19:11,972 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-04-01 06:19:11,973 INFO  L87              Difference]: Start difference. First operand 77 states and 82 transitions. Second operand  has 11 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10)
[2023-04-01 06:19:12,355 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 06:19:12,356 INFO  L93              Difference]: Finished difference Result 162 states and 175 transitions.
[2023-04-01 06:19:12,356 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-04-01 06:19:12,357 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 45
[2023-04-01 06:19:12,357 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 06:19:12,358 INFO  L225             Difference]: With dead ends: 162
[2023-04-01 06:19:12,358 INFO  L226             Difference]: Without dead ends: 123
[2023-04-01 06:19:12,359 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272
[2023-04-01 06:19:12,359 INFO  L413           NwaCegarLoop]: 32 mSDtfsCounter, 95 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-04-01 06:19:12,360 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 114 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-04-01 06:19:12,360 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2023-04-01 06:19:12,379 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 110.
[2023-04-01 06:19:12,380 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 110 states, 56 states have (on average 1.125) internal successors, (63), 57 states have internal predecessors, (63), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (27), 25 states have call predecessors, (27), 26 states have call successors, (27)
[2023-04-01 06:19:12,381 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 117 transitions.
[2023-04-01 06:19:12,381 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 117 transitions. Word has length 45
[2023-04-01 06:19:12,381 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 06:19:12,381 INFO  L495      AbstractCegarLoop]: Abstraction has 110 states and 117 transitions.
[2023-04-01 06:19:12,382 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10)
[2023-04-01 06:19:12,382 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 117 transitions.
[2023-04-01 06:19:12,382 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2023-04-01 06:19:12,382 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:19:12,383 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 06:19:12,383 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-01 06:19:12,383 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:19:12,383 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:19:12,383 INFO  L85        PathProgramCache]: Analyzing trace with hash 872642234, now seen corresponding path program 1 times
[2023-04-01 06:19:12,383 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:19:12,383 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745748055]
[2023-04-01 06:19:12,384 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:19:12,384 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:19:12,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:19:14,787 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 06:19:14,787 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:19:14,788 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745748055]
[2023-04-01 06:19:14,788 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745748055] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 06:19:14,789 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 06:19:14,789 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2023-04-01 06:19:14,789 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259871116]
[2023-04-01 06:19:14,789 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 06:19:14,790 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2023-04-01 06:19:14,790 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 06:19:14,791 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2023-04-01 06:19:14,791 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756
[2023-04-01 06:19:14,791 INFO  L87              Difference]: Start difference. First operand 110 states and 117 transitions. Second operand  has 28 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-04-01 06:19:16,305 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 06:19:16,306 INFO  L93              Difference]: Finished difference Result 218 states and 234 transitions.
[2023-04-01 06:19:16,306 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. 
[2023-04-01 06:19:16,306 INFO  L78                 Accepts]: Start accepts. Automaton has  has 28 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 45
[2023-04-01 06:19:16,307 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 06:19:16,310 INFO  L225             Difference]: With dead ends: 218
[2023-04-01 06:19:16,310 INFO  L226             Difference]: Without dead ends: 147
[2023-04-01 06:19:16,314 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=552, Invalid=2204, Unknown=0, NotChecked=0, Total=2756
[2023-04-01 06:19:16,316 INFO  L413           NwaCegarLoop]: 22 mSDtfsCounter, 455 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-04-01 06:19:16,317 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 133 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-04-01 06:19:16,318 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 147 states.
[2023-04-01 06:19:16,347 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 112.
[2023-04-01 06:19:16,348 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 112 states, 57 states have (on average 1.105263157894737) internal successors, (63), 59 states have internal predecessors, (63), 27 states have call successors, (27), 27 states have call predecessors, (27), 27 states have return successors, (28), 25 states have call predecessors, (28), 26 states have call successors, (28)
[2023-04-01 06:19:16,349 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 118 transitions.
[2023-04-01 06:19:16,349 INFO  L78                 Accepts]: Start accepts. Automaton has 112 states and 118 transitions. Word has length 45
[2023-04-01 06:19:16,349 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 06:19:16,349 INFO  L495      AbstractCegarLoop]: Abstraction has 112 states and 118 transitions.
[2023-04-01 06:19:16,349 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 28 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 11 states have call successors, (12), 9 states have call predecessors, (12), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2023-04-01 06:19:16,349 INFO  L276                IsEmpty]: Start isEmpty. Operand 112 states and 118 transitions.
[2023-04-01 06:19:16,350 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2023-04-01 06:19:16,350 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:19:16,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 06:19:16,350 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-01 06:19:16,351 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:19:16,351 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:19:16,351 INFO  L85        PathProgramCache]: Analyzing trace with hash -411395812, now seen corresponding path program 1 times
[2023-04-01 06:19:16,351 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:19:16,351 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444855518]
[2023-04-01 06:19:16,351 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:19:16,352 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:19:16,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:19:17,222 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 06:19:17,223 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:19:17,223 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444855518]
[2023-04-01 06:19:17,223 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444855518] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 06:19:17,223 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 06:19:17,223 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2023-04-01 06:19:17,223 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792935695]
[2023-04-01 06:19:17,223 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 06:19:17,224 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-04-01 06:19:17,224 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 06:19:17,224 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-04-01 06:19:17,224 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156
[2023-04-01 06:19:17,225 INFO  L87              Difference]: Start difference. First operand 112 states and 118 transitions. Second operand  has 13 states, 8 states have (on average 3.0) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10)
[2023-04-01 06:19:17,478 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 06:19:17,479 INFO  L93              Difference]: Finished difference Result 148 states and 165 transitions.
[2023-04-01 06:19:17,479 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2023-04-01 06:19:17,479 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 8 states have (on average 3.0) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 46
[2023-04-01 06:19:17,481 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 06:19:17,485 INFO  L225             Difference]: With dead ends: 148
[2023-04-01 06:19:17,485 INFO  L226             Difference]: Without dead ends: 146
[2023-04-01 06:19:17,487 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462
[2023-04-01 06:19:17,494 INFO  L413           NwaCegarLoop]: 57 mSDtfsCounter, 35 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-01 06:19:17,494 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 607 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-01 06:19:17,495 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2023-04-01 06:19:17,530 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120.
[2023-04-01 06:19:17,531 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 120 states, 62 states have (on average 1.096774193548387) internal successors, (68), 65 states have internal predecessors, (68), 28 states have call successors, (28), 28 states have call predecessors, (28), 29 states have return successors, (30), 26 states have call predecessors, (30), 27 states have call successors, (30)
[2023-04-01 06:19:17,540 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 126 transitions.
[2023-04-01 06:19:17,540 INFO  L78                 Accepts]: Start accepts. Automaton has 120 states and 126 transitions. Word has length 46
[2023-04-01 06:19:17,540 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 06:19:17,540 INFO  L495      AbstractCegarLoop]: Abstraction has 120 states and 126 transitions.
[2023-04-01 06:19:17,541 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 8 states have (on average 3.0) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10)
[2023-04-01 06:19:17,541 INFO  L276                IsEmpty]: Start isEmpty. Operand 120 states and 126 transitions.
[2023-04-01 06:19:17,545 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2023-04-01 06:19:17,545 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:19:17,545 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 06:19:17,545 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-01 06:19:17,546 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:19:17,546 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:19:17,546 INFO  L85        PathProgramCache]: Analyzing trace with hash -1508418533, now seen corresponding path program 1 times
[2023-04-01 06:19:17,546 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:19:17,546 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036692637]
[2023-04-01 06:19:17,546 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:19:17,546 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:19:17,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:19:30,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-04-01 06:19:30,415 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:19:30,415 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036692637]
[2023-04-01 06:19:30,415 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036692637] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 06:19:30,415 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495133318]
[2023-04-01 06:19:30,415 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:19:30,415 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 06:19:30,415 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 06:19:30,418 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-04-01 06:19:30,423 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-04-01 06:19:30,683 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:19:30,692 INFO  L262         TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 197 conjunts are in the unsatisfiable core
[2023-04-01 06:19:30,704 INFO  L285         TraceCheckSpWp]: Computing forward predicates...