/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.4.1.ufo.BOUNDED-8.pals.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 06:16:32,119 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 06:16:32,121 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2023-04-01 06:16:32,159 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 06:16:32,161 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 06:16:32,166 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-01 06:16:32,168 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
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[2023-04-01 06:16:32,174 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-01 06:16:32,175 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-01 06:16:32,177 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-01 06:16:32,177 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2023-04-01 06:16:32,181 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 06:16:32,181 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 06:16:32,182 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 06:16:32,184 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-01 06:16:32,188 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-01 06:16:32,189 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-01 06:16:32,190 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-01 06:16:32,191 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 06:16:32,192 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 06:16:32,204 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-01 06:16:32,206 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-01 06:16:32,206 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2023-04-01 06:16:32,207 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 06:16:32,208 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-01 06:16:32,209 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2023-04-01 06:16:32,210 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-01 06:16:32,211 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 06:16:32,214 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 06:16:32,243 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 06:16:32,243 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 06:16:32,244 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 06:16:32,244 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 06:16:32,245 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 06:16:32,245 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 06:16:32,245 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 06:16:32,245 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 06:16:32,245 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 06:16:32,245 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 06:16:32,246 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 06:16:32,246 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 06:16:32,246 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 06:16:32,246 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 06:16:32,247 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 06:16:32,247 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 06:16:32,247 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 06:16:32,247 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 06:16:32,247 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 06:16:32,247 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 06:16:32,248 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 06:16:32,248 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 06:16:32,248 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 06:16:32,248 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 06:16:32,248 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 06:16:32,248 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 06:16:32,249 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 06:16:32,249 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 06:16:32,249 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 06:16:32,249 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 06:16:32,249 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 06:16:32,249 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 06:16:32,249 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 06:16:32,250 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 06:16:32,250 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 06:16:32,250 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 06:16:32,250 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 06:16:32,250 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 06:16:32,250 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 06:16:32,250 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 06:16:32,250 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 06:16:32,250 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-01 06:16:32,486 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 06:16:32,504 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 06:16:32,506 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 06:16:32,507 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 06:16:32,508 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 06:16:32,508 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c
[2023-04-01 06:16:33,658 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 06:16:33,854 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 06:16:33,855 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c
[2023-04-01 06:16:33,863 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b21478cc9/522a51a2870447fd8ed17f4e2b51d8ce/FLAG6cc64162c
[2023-04-01 06:16:33,878 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b21478cc9/522a51a2870447fd8ed17f4e2b51d8ce
[2023-04-01 06:16:33,880 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 06:16:33,881 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 06:16:33,882 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 06:16:33,882 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 06:16:33,885 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 06:16:33,886 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:16:33" (1/1) ...
[2023-04-01 06:16:33,887 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@232e6500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:33, skipping insertion in model container
[2023-04-01 06:16:33,887 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:16:33" (1/1) ...
[2023-04-01 06:16:33,893 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 06:16:33,926 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 06:16:34,112 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.4.1.ufo.BOUNDED-8.pals.c[9433,9446]
[2023-04-01 06:16:34,116 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 06:16:34,124 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 06:16:34,157 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.4.1.ufo.BOUNDED-8.pals.c[9433,9446]
[2023-04-01 06:16:34,157 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 06:16:34,170 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 06:16:34,170 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:34 WrapperNode
[2023-04-01 06:16:34,170 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 06:16:34,171 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 06:16:34,171 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 06:16:34,171 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 06:16:34,182 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:34" (1/1) ...
[2023-04-01 06:16:34,182 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:34" (1/1) ...
[2023-04-01 06:16:34,190 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:34" (1/1) ...
[2023-04-01 06:16:34,191 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:34" (1/1) ...
[2023-04-01 06:16:34,200 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:34" (1/1) ...
[2023-04-01 06:16:34,206 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:34" (1/1) ...
[2023-04-01 06:16:34,208 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:34" (1/1) ...
[2023-04-01 06:16:34,209 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:34" (1/1) ...
[2023-04-01 06:16:34,212 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 06:16:34,213 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 06:16:34,213 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 06:16:34,213 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 06:16:34,214 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:34" (1/1) ...
[2023-04-01 06:16:34,221 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 06:16:34,243 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 06:16:34,254 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 06:16:34,260 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 06:16:34,285 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 06:16:34,285 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 06:16:34,285 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 06:16:34,285 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-01 06:16:34,285 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-01 06:16:34,286 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-01 06:16:34,286 INFO  L138     BoogieDeclarations]: Found implementation of procedure node4
[2023-04-01 06:16:34,286 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-01 06:16:34,286 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-01 06:16:34,286 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 06:16:34,286 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-01 06:16:34,286 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 06:16:34,286 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 06:16:34,287 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 06:16:34,287 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 06:16:34,287 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-01 06:16:34,287 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-01 06:16:34,287 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-01 06:16:34,287 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-01 06:16:34,287 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-01 06:16:34,287 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-01 06:16:34,287 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-01 06:16:34,287 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-01 06:16:34,288 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2023-04-01 06:16:34,288 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-01 06:16:34,288 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-01 06:16:34,288 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 06:16:34,288 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 06:16:34,288 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 06:16:34,288 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 06:16:34,288 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 06:16:34,289 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 06:16:34,289 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 06:16:34,385 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 06:16:34,388 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 06:16:34,867 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 06:16:35,174 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 06:16:35,174 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 06:16:35,177 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:16:35 BoogieIcfgContainer
[2023-04-01 06:16:35,177 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 06:16:35,179 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 06:16:35,179 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 06:16:35,182 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 06:16:35,182 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:16:33" (1/3) ...
[2023-04-01 06:16:35,183 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e535f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:16:35, skipping insertion in model container
[2023-04-01 06:16:35,183 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:16:34" (2/3) ...
[2023-04-01 06:16:35,183 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e535f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:16:35, skipping insertion in model container
[2023-04-01 06:16:35,184 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:16:35" (3/3) ...
[2023-04-01 06:16:35,187 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c
[2023-04-01 06:16:35,202 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 06:16:35,202 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 06:16:35,248 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 06:16:35,253 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;@4dd55e8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 06:16:35,254 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 06:16:35,257 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 06:16:35,263 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2023-04-01 06:16:35,263 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:16:35,264 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 06:16:35,264 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:16:35,269 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:16:35,269 INFO  L85        PathProgramCache]: Analyzing trace with hash 1606734042, now seen corresponding path program 1 times
[2023-04-01 06:16:35,277 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:16:35,277 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929085903]
[2023-04-01 06:16:35,278 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:16:35,278 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:16:35,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:16:38,419 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 06:16:38,420 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:16:38,420 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929085903]
[2023-04-01 06:16:38,420 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929085903] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 06:16:38,421 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 06:16:38,421 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23
[2023-04-01 06:16:38,423 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348109643]
[2023-04-01 06:16:38,423 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 06:16:38,427 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2023-04-01 06:16:38,427 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 06:16:38,466 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2023-04-01 06:16:38,473 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506
[2023-04-01 06:16:38,475 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 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 8 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-04-01 06:16:40,024 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 06:16:40,024 INFO  L93              Difference]: Finished difference Result 106 states and 116 transitions.
[2023-04-01 06:16:40,025 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. 
[2023-04-01 06:16:40,027 INFO  L78                 Accepts]: Start accepts. Automaton has  has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 8 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 31
[2023-04-01 06:16:40,027 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 06:16:40,033 INFO  L225             Difference]: With dead ends: 106
[2023-04-01 06:16:40,033 INFO  L226             Difference]: Without dead ends: 68
[2023-04-01 06:16:40,036 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=454, Invalid=2096, Unknown=0, NotChecked=0, Total=2550
[2023-04-01 06:16:40,039 INFO  L413           NwaCegarLoop]: 23 mSDtfsCounter, 143 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-04-01 06:16:40,040 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 196 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-04-01 06:16:40,054 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2023-04-01 06:16:40,081 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58.
[2023-04-01 06:16:40,083 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 06:16:40,084 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions.
[2023-04-01 06:16:40,085 INFO  L78                 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 31
[2023-04-01 06:16:40,085 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 06:16:40,085 INFO  L495      AbstractCegarLoop]: Abstraction has 58 states and 58 transitions.
[2023-04-01 06:16:40,086 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 8 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-04-01 06:16:40,086 INFO  L276                IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions.
[2023-04-01 06:16:40,087 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2023-04-01 06:16:40,087 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:16:40,087 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 06:16:40,088 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 06:16:40,088 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:16:40,088 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:16:40,089 INFO  L85        PathProgramCache]: Analyzing trace with hash -822453899, now seen corresponding path program 1 times
[2023-04-01 06:16:40,089 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:16:40,089 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098412438]
[2023-04-01 06:16:40,089 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:16:40,089 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:16:40,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:16:49,390 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-04-01 06:16:49,391 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:16:49,391 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098412438]
[2023-04-01 06:16:49,391 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098412438] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 06:16:49,392 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242912682]
[2023-04-01 06:16:49,392 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:16:49,392 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 06:16:49,392 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 06:16:49,404 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 06:16:49,406 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 06:16:49,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:16:49,637 INFO  L262         TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 180 conjunts are in the unsatisfiable core
[2023-04-01 06:16:49,650 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 06:17:22,930 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 06:17:22,930 INFO  L327         TraceCheckSpWp]: Computing backward predicates...