/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.3.ufo.UNBOUNDED.pals.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 06:16:26,290 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 06:16:26,292 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-01 06:16:26,329 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-01 06:16:26,329 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 06:16:26,332 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 06:16:26,335 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-01 06:16:26,337 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-01 06:16:26,338 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-01 06:16:26,343 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-01 06:16:26,344 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-01 06:16:26,346 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-01 06:16:26,346 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-04-01 06:16:26,348 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-04-01 06:16:26,349 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-01 06:16:26,350 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 06:16:26,351 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 06:16:26,352 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 06:16:26,353 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-01 06:16:26,358 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-01 06:16:26,359 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-01 06:16:26,360 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-01 06:16:26,361 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 06:16:26,362 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 06:16:26,372 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 06:16:26,372 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-04-01 06:16:26,375 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-01 06:16:26,375 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-04-01 06:16:26,375 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-04-01 06:16:26,377 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 06:16:26,378 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-01 06:16:26,378 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-04-01 06:16:26,378 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2023-04-01 06:16:26,379 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 06:16:26,381 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 06:16:26,381 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 06:16:26,410 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 06:16:26,410 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 06:16:26,410 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 06:16:26,410 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 06:16:26,411 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 06:16:26,411 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 06:16:26,411 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 06:16:26,412 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 06:16:26,412 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 06:16:26,412 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 06:16:26,412 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 06:16:26,413 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 06:16:26,413 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 06:16:26,413 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 06:16:26,413 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 06:16:26,413 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 06:16:26,413 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 06:16:26,413 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 06:16:26,414 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 06:16:26,414 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 06:16:26,414 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 06:16:26,414 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 06:16:26,414 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 06:16:26,414 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 06:16:26,415 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 06:16:26,415 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 06:16:26,415 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 06:16:26,415 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 06:16:26,415 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 06:16:26,415 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 06:16:26,415 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 06:16:26,416 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 06:16:26,416 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 06:16:26,416 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 06:16:26,416 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 06:16:26,416 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 06:16:26,416 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 06:16:26,416 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 06:16:26,416 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 06:16:26,417 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 06:16:26,417 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 06:16:26,417 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-01 06:16:26,651 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 06:16:26,674 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 06:16:26,678 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 06:16:26,679 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 06:16:26,680 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 06:16:26,681 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c
[2023-04-01 06:16:27,901 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 06:16:28,114 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 06:16:28,114 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c
[2023-04-01 06:16:28,123 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d37fdd85/53bbee80be13499e97ab3ffe989eaac9/FLAGe2050e01c
[2023-04-01 06:16:28,133 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d37fdd85/53bbee80be13499e97ab3ffe989eaac9
[2023-04-01 06:16:28,135 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 06:16:28,136 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 06:16:28,137 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 06:16:28,137 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 06:16:28,141 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 06:16:28,142 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:16:28" (1/1) ...
[2023-04-01 06:16:28,142 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@324f8d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:28, skipping insertion in model container
[2023-04-01 06:16:28,143 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:16:28" (1/1) ...
[2023-04-01 06:16:28,149 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 06:16:28,177 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 06:16:28,364 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.3.ufo.UNBOUNDED.pals.c[6899,6912]
[2023-04-01 06:16:28,367 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 06:16:28,376 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 06:16:28,409 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.3.ufo.UNBOUNDED.pals.c[6899,6912]
[2023-04-01 06:16:28,409 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 06:16:28,422 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 06:16:28,423 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:28 WrapperNode
[2023-04-01 06:16:28,423 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 06:16:28,424 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 06:16:28,424 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 06:16:28,424 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 06:16:28,434 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:28" (1/1) ...
[2023-04-01 06:16:28,435 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:28" (1/1) ...
[2023-04-01 06:16:28,443 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:28" (1/1) ...
[2023-04-01 06:16:28,443 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:28" (1/1) ...
[2023-04-01 06:16:28,452 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:28" (1/1) ...
[2023-04-01 06:16:28,457 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:28" (1/1) ...
[2023-04-01 06:16:28,460 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:28" (1/1) ...
[2023-04-01 06:16:28,461 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:28" (1/1) ...
[2023-04-01 06:16:28,464 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 06:16:28,465 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 06:16:28,465 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 06:16:28,465 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 06:16:28,465 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:28" (1/1) ...
[2023-04-01 06:16:28,480 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 06:16:28,489 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 06:16:28,505 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 06:16:28,507 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 06:16:28,544 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 06:16:28,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 06:16:28,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 06:16:28,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-04-01 06:16:28,546 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-01 06:16:28,546 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-01 06:16:28,546 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-01 06:16:28,546 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-01 06:16:28,546 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-01 06:16:28,546 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 06:16:28,546 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-01 06:16:28,547 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 06:16:28,547 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 06:16:28,547 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 06:16:28,547 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 06:16:28,547 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-01 06:16:28,547 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-01 06:16:28,547 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2023-04-01 06:16:28,547 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-01 06:16:28,548 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-04-01 06:16:28,548 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-01 06:16:28,548 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-01 06:16:28,548 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-01 06:16:28,548 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-01 06:16:28,548 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-01 06:16:28,548 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-01 06:16:28,549 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-01 06:16:28,549 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 06:16:28,549 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 06:16:28,549 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 06:16:28,549 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 06:16:28,549 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 06:16:28,549 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 06:16:28,549 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 06:16:28,659 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 06:16:28,661 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 06:16:29,094 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 06:16:29,401 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 06:16:29,402 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 06:16:29,404 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:16:29 BoogieIcfgContainer
[2023-04-01 06:16:29,404 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 06:16:29,407 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 06:16:29,407 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 06:16:29,410 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 06:16:29,410 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:16:28" (1/3) ...
[2023-04-01 06:16:29,411 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6b4aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:16:29, skipping insertion in model container
[2023-04-01 06:16:29,411 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:28" (2/3) ...
[2023-04-01 06:16:29,411 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6b4aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:16:29, skipping insertion in model container
[2023-04-01 06:16:29,412 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:16:29" (3/3) ...
[2023-04-01 06:16:29,415 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c
[2023-04-01 06:16:29,433 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 06:16:29,433 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 06:16:29,482 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 06:16:29,487 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;@31f97a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 06:16:29,487 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 06:16:29,491 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 38 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 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 06:16:29,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2023-04-01 06:16:29,497 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:16:29,498 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]
[2023-04-01 06:16:29,498 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:16:29,502 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:16:29,502 INFO  L85        PathProgramCache]: Analyzing trace with hash 1651210126, now seen corresponding path program 1 times
[2023-04-01 06:16:29,509 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:16:29,509 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929130375]
[2023-04-01 06:16:29,510 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:16:29,510 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:16:29,859 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:16:32,335 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 06:16:32,335 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:16:32,336 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929130375]
[2023-04-01 06:16:32,336 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929130375] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 06:16:32,336 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 06:16:32,337 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22
[2023-04-01 06:16:32,338 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838773993]
[2023-04-01 06:16:32,339 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 06:16:32,342 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2023-04-01 06:16:32,342 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 06:16:32,384 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2023-04-01 06:16:32,387 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462
[2023-04-01 06:16:32,389 INFO  L87              Difference]: Start difference. First operand  has 38 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 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 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (9), 5 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 06:16:33,501 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 06:16:33,502 INFO  L93              Difference]: Finished difference Result 88 states and 100 transitions.
[2023-04-01 06:16:33,503 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. 
[2023-04-01 06:16:33,504 INFO  L78                 Accepts]: Start accepts. Automaton has  has 22 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (9), 5 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 32
[2023-04-01 06:16:33,505 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 06:16:33,512 INFO  L225             Difference]: With dead ends: 88
[2023-04-01 06:16:33,512 INFO  L226             Difference]: Without dead ends: 63
[2023-04-01 06:16:33,519 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722
[2023-04-01 06:16:33,523 INFO  L413           NwaCegarLoop]: 25 mSDtfsCounter, 119 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-04-01 06:16:33,524 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 197 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-04-01 06:16:33,545 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2023-04-01 06:16:33,578 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55.
[2023-04-01 06:16:33,579 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 55 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13)
[2023-04-01 06:16:33,581 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions.
[2023-04-01 06:16:33,582 INFO  L78                 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 32
[2023-04-01 06:16:33,582 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 06:16:33,583 INFO  L495      AbstractCegarLoop]: Abstraction has 55 states and 55 transitions.
[2023-04-01 06:16:33,583 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (9), 5 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 06:16:33,583 INFO  L276                IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions.
[2023-04-01 06:16:33,585 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2023-04-01 06:16:33,586 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:16:33,586 INFO  L195           NwaCegarLoop]: trace histogram [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]
[2023-04-01 06:16:33,587 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 06:16:33,587 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:16:33,587 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:16:33,587 INFO  L85        PathProgramCache]: Analyzing trace with hash 481137603, now seen corresponding path program 1 times
[2023-04-01 06:16:33,588 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:16:33,588 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977503157]
[2023-04-01 06:16:33,588 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:16:33,588 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:16:33,713 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:16:39,638 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-04-01 06:16:39,638 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:16:39,639 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977503157]
[2023-04-01 06:16:39,639 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977503157] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 06:16:39,639 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74379356]
[2023-04-01 06:16:39,639 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:16:39,639 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 06:16:39,640 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 06:16:39,645 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 06:16:39,657 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 06:16:39,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:16:39,819 INFO  L262         TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 160 conjunts are in the unsatisfiable core
[2023-04-01 06:16:39,832 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 06:16:59,013 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 06:16:59,014 INFO  L327         TraceCheckSpWp]: Computing backward predicates...