/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-var-start-time.4.2.ufo.BOUNDED-8.pals.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 06:16:38,544 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 06:16:38,545 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-01 06:16:38,582 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-01 06:16:38,583 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 06:16:38,585 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 06:16:38,601 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-01 06:16:38,603 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-01 06:16:38,604 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-01 06:16:38,608 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-01 06:16:38,609 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-01 06:16:38,610 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-01 06:16:38,611 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2023-04-01 06:16:38,613 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-01 06:16:38,614 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 06:16:38,615 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 06:16:38,615 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 06:16:38,617 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-01 06:16:38,620 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-01 06:16:38,621 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-01 06:16:38,622 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-01 06:16:38,623 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 06:16:38,623 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 06:16:38,645 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 06:16:38,646 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-04-01 06:16:38,648 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-01 06:16:38,648 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-04-01 06:16:38,649 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-04-01 06:16:38,650 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 06:16:38,650 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-01 06:16:38,651 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-04-01 06:16:38,651 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-04-01 06:16:38,651 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2023-04-01 06:16:38,652 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2023-04-01 06:16:38,652 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2023-04-01 06:16:38,653 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 06:16:38,653 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 06:16:38,697 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 06:16:38,697 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 06:16:38,698 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 06:16:38,698 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 06:16:38,698 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 06:16:38,699 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 06:16:38,699 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 06:16:38,699 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 06:16:38,699 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 06:16:38,699 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 06:16:38,699 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 06:16:38,700 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 06:16:38,700 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 06:16:38,700 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 06:16:38,700 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 06:16:38,700 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 06:16:38,700 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 06:16:38,700 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 06:16:38,701 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 06:16:38,701 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 06:16:38,701 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 06:16:38,701 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 06:16:38,701 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 06:16:38,701 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 06:16:38,701 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 06:16:38,702 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 06:16:38,702 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 06:16:38,702 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 06:16:38,702 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 06:16:38,702 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 06:16:38,702 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 06:16:38,702 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 06:16:38,702 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 06:16:38,703 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 06:16:38,703 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 06:16:38,703 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 06:16:38,703 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 06:16:38,703 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 06:16:38,703 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 06:16:38,703 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 06:16:38,703 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 06:16:38,703 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-01 06:16:38,929 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 06:16:38,947 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 06:16:38,949 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 06:16:38,950 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 06:16:38,951 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 06:16:38,952 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c
[2023-04-01 06:16:40,108 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 06:16:40,298 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 06:16:40,298 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c
[2023-04-01 06:16:40,305 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d661ddbd3/15a162018b1a4e91ac542241ca03a5e4/FLAG06aa32dd8
[2023-04-01 06:16:40,319 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d661ddbd3/15a162018b1a4e91ac542241ca03a5e4
[2023-04-01 06:16:40,321 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 06:16:40,322 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 06:16:40,323 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 06:16:40,323 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 06:16:40,326 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 06:16:40,326 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:16:40" (1/1) ...
[2023-04-01 06:16:40,327 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b315a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:40, skipping insertion in model container
[2023-04-01 06:16:40,327 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:16:40" (1/1) ...
[2023-04-01 06:16:40,332 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 06:16:40,364 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 06:16:40,539 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-var-start-time.4.2.ufo.BOUNDED-8.pals.c[9280,9293]
[2023-04-01 06:16:40,542 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 06:16:40,566 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 06:16:40,626 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-var-start-time.4.2.ufo.BOUNDED-8.pals.c[9280,9293]
[2023-04-01 06:16:40,626 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 06:16:40,637 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 06:16:40,638 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:40 WrapperNode
[2023-04-01 06:16:40,638 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 06:16:40,639 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 06:16:40,639 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 06:16:40,639 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 06:16:40,649 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:40" (1/1) ...
[2023-04-01 06:16:40,649 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:40" (1/1) ...
[2023-04-01 06:16:40,657 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:40" (1/1) ...
[2023-04-01 06:16:40,657 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:40" (1/1) ...
[2023-04-01 06:16:40,666 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:40" (1/1) ...
[2023-04-01 06:16:40,696 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:40" (1/1) ...
[2023-04-01 06:16:40,697 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:40" (1/1) ...
[2023-04-01 06:16:40,699 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:40" (1/1) ...
[2023-04-01 06:16:40,701 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 06:16:40,734 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 06:16:40,734 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 06:16:40,734 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 06:16:40,735 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:40" (1/1) ...
[2023-04-01 06:16:40,747 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 06:16:40,759 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 06:16:40,770 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 06:16:40,775 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 06:16:40,799 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 06:16:40,799 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 06:16:40,799 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 06:16:40,799 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-01 06:16:40,799 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-01 06:16:40,800 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-01 06:16:40,800 INFO  L138     BoogieDeclarations]: Found implementation of procedure node4
[2023-04-01 06:16:40,800 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-01 06:16:40,800 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-01 06:16:40,800 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 06:16:40,800 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-01 06:16:40,800 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 06:16:40,800 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 06:16:40,800 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 06:16:40,800 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 06:16:40,800 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-01 06:16:40,801 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-01 06:16:40,801 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-01 06:16:40,801 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-01 06:16:40,801 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-01 06:16:40,801 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-01 06:16:40,801 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-01 06:16:40,801 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-01 06:16:40,801 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2023-04-01 06:16:40,801 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-01 06:16:40,801 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-01 06:16:40,802 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 06:16:40,802 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 06:16:40,802 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 06:16:40,802 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 06:16:40,802 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 06:16:40,802 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 06:16:40,802 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 06:16:40,867 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 06:16:40,868 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 06:16:41,227 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 06:16:41,607 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 06:16:41,607 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 06:16:41,609 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:16:41 BoogieIcfgContainer
[2023-04-01 06:16:41,609 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 06:16:41,611 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 06:16:41,611 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 06:16:41,613 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 06:16:41,613 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:16:40" (1/3) ...
[2023-04-01 06:16:41,614 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2dbf28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:16:41, skipping insertion in model container
[2023-04-01 06:16:41,614 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:40" (2/3) ...
[2023-04-01 06:16:41,614 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2dbf28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:16:41, skipping insertion in model container
[2023-04-01 06:16:41,614 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:16:41" (3/3) ...
[2023-04-01 06:16:41,617 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c
[2023-04-01 06:16:41,629 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 06:16:41,629 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 06:16:41,672 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 06:16:41,678 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;@5ce86170, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 06:16:41,678 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 06:16:41,681 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 38 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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)
[2023-04-01 06:16:41,686 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2023-04-01 06:16:41,687 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:16:41,687 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]
[2023-04-01 06:16:41,688 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:16:41,693 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:16:41,694 INFO  L85        PathProgramCache]: Analyzing trace with hash 1526016463, now seen corresponding path program 1 times
[2023-04-01 06:16:41,700 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:16:41,700 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839811365]
[2023-04-01 06:16:41,700 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:16:41,700 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:16:42,036 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:16:44,222 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 06:16:44,222 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:16:44,222 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839811365]
[2023-04-01 06:16:44,223 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839811365] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 06:16:44,223 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 06:16:44,223 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22
[2023-04-01 06:16:44,224 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842351281]
[2023-04-01 06:16:44,225 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 06:16:44,228 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2023-04-01 06:16:44,228 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 06:16:44,263 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2023-04-01 06:16:44,266 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462
[2023-04-01 06:16:44,268 INFO  L87              Difference]: Start difference. First operand  has 38 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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 22 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 7 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7)
[2023-04-01 06:16:45,095 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 06:16:45,095 INFO  L93              Difference]: Finished difference Result 106 states and 116 transitions.
[2023-04-01 06:16:45,096 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2023-04-01 06:16:45,097 INFO  L78                 Accepts]: Start accepts. Automaton has  has 22 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 7 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 31
[2023-04-01 06:16:45,098 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 06:16:45,102 INFO  L225             Difference]: With dead ends: 106
[2023-04-01 06:16:45,102 INFO  L226             Difference]: Without dead ends: 68
[2023-04-01 06:16:45,105 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406
[2023-04-01 06:16:45,107 INFO  L413           NwaCegarLoop]: 29 mSDtfsCounter, 174 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-04-01 06:16:45,108 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 197 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-04-01 06:16:45,120 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2023-04-01 06:16:45,139 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58.
[2023-04-01 06:16:45,140 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 58 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14)
[2023-04-01 06:16:45,141 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions.
[2023-04-01 06:16:45,142 INFO  L78                 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 31
[2023-04-01 06:16:45,142 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 06:16:45,142 INFO  L495      AbstractCegarLoop]: Abstraction has 58 states and 58 transitions.
[2023-04-01 06:16:45,142 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 7 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7)
[2023-04-01 06:16:45,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions.
[2023-04-01 06:16:45,144 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2023-04-01 06:16:45,144 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:16:45,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 06:16:45,144 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 06:16:45,144 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:16:45,144 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:16:45,145 INFO  L85        PathProgramCache]: Analyzing trace with hash -1765988161, now seen corresponding path program 1 times
[2023-04-01 06:16:45,145 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:16:45,145 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064195868]
[2023-04-01 06:16:45,145 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:16:45,145 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:16:45,263 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:16:53,510 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-04-01 06:16:53,511 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:16:53,511 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064195868]
[2023-04-01 06:16:53,511 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064195868] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 06:16:53,511 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676213425]
[2023-04-01 06:16:53,511 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:16:53,512 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 06:16:53,512 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 06:16:53,525 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 06:16:53,560 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 06:16:53,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:16:53,763 INFO  L262         TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 182 conjunts are in the unsatisfiable core
[2023-04-01 06:16:53,774 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 06:17:23,637 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 06:17:23,642 INFO  L327         TraceCheckSpWp]: Computing backward predicates...