/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 EqDomain -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 12:22:48,193 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 12:22:48,195 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-01 12:22:48,223 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-01 12:22:48,223 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 12:22:48,224 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 12:22:48,226 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-01 12:22:48,230 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-01 12:22:48,232 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-01 12:22:48,237 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-01 12:22:48,238 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-01 12:22:48,239 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-01 12:22:48,239 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-04-01 12:22:48,242 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-04-01 12:22:48,242 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-01 12:22:48,244 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 12:22:48,245 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 12:22:48,245 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 12:22:48,247 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-01 12:22:48,252 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-01 12:22:48,253 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-01 12:22:48,254 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-01 12:22:48,255 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 12:22:48,256 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 12:22:48,259 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-04-01 12:22:48,259 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-04-01 12:22:48,259 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-04-01 12:22:48,261 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-04-01 12:22:48,261 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-04-01 12:22:48,261 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-01 12:22:48,261 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-04-01 12:22:48,262 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-04-01 12:22:48,263 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 12:22:48,263 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-01 12:22:48,264 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-04-01 12:22:48,264 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-04-01 12:22:48,264 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-04-01 12:22:48,265 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-04-01 12:22:48,265 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2023-04-01 12:22:48,265 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2023-04-01 12:22:48,266 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 12:22:48,267 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 12:22:48,292 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 12:22:48,292 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 12:22:48,292 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 12:22:48,292 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 12:22:48,293 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 12:22:48,293 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 12:22:48,293 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 12:22:48,293 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 12:22:48,293 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 12:22:48,293 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 12:22:48,294 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 12:22:48,294 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 12:22:48,294 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 12:22:48,294 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 12:22:48,294 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 12:22:48,294 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 12:22:48,295 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 12:22:48,295 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 12:22:48,295 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 12:22:48,295 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 12:22:48,295 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 12:22:48,296 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 12:22:48,296 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 12:22:48,296 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 12:22:48,296 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 12:22:48,296 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 12:22:48,296 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 12:22:48,296 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 12:22:48,296 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 12:22:48,296 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 12:22:48,297 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 12:22:48,297 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 12:22:48,297 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 12:22:48,297 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 12:22:48,297 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 12:22:48,297 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 12:22:48,297 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 12:22:48,297 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 12:22:48,297 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 12:22:48,297 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 12:22:48,298 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 12:22:48,298 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain
[2023-04-01 12:22:48,514 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 12:22:48,532 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 12:22:48,533 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 12:22:48,535 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 12:22:48,535 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 12:22:48,536 INFO  L432   ainManager$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 12:22:49,636 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 12:22:49,803 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 12:22:49,803 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 12:22:49,815 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a56c40a1/abe5883a1289479a9d19628a488a4d3f/FLAGbe38173c0
[2023-04-01 12:22:49,829 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a56c40a1/abe5883a1289479a9d19628a488a4d3f
[2023-04-01 12:22:49,832 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 12:22:49,833 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 12:22:49,834 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 12:22:49,835 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 12:22:49,837 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 12:22:49,837 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:22:49" (1/1) ...
[2023-04-01 12:22:49,838 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1bcdfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:49, skipping insertion in model container
[2023-04-01 12:22:49,839 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:22:49" (1/1) ...
[2023-04-01 12:22:49,843 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 12:22:49,879 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 12:22:50,048 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 12:22:50,051 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 12:22:50,058 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 12:22:50,086 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 12:22:50,086 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 12:22:50,096 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 12:22:50,097 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:50 WrapperNode
[2023-04-01 12:22:50,097 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 12:22:50,098 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 12:22:50,098 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 12:22:50,098 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 12:22:50,107 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:50" (1/1) ...
[2023-04-01 12:22:50,107 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:50" (1/1) ...
[2023-04-01 12:22:50,113 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:50" (1/1) ...
[2023-04-01 12:22:50,113 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:50" (1/1) ...
[2023-04-01 12:22:50,124 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:50" (1/1) ...
[2023-04-01 12:22:50,134 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:50" (1/1) ...
[2023-04-01 12:22:50,135 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:50" (1/1) ...
[2023-04-01 12:22:50,137 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:50" (1/1) ...
[2023-04-01 12:22:50,139 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 12:22:50,140 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 12:22:50,140 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 12:22:50,140 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 12:22:50,141 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:50" (1/1) ...
[2023-04-01 12:22:50,145 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 12:22:50,154 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 12:22:50,170 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 12:22:50,177 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 12:22:50,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 12:22:50,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 12:22:50,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 12:22:50,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-01 12:22:50,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-01 12:22:50,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-01 12:22:50,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure node4
[2023-04-01 12:22:50,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-01 12:22:50,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-01 12:22:50,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 12:22:50,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-01 12:22:50,200 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 12:22:50,200 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 12:22:50,200 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 12:22:50,200 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 12:22:50,200 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-01 12:22:50,200 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-01 12:22:50,200 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-01 12:22:50,201 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-01 12:22:50,201 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-01 12:22:50,201 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-01 12:22:50,201 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-01 12:22:50,201 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-01 12:22:50,201 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2023-04-01 12:22:50,201 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-01 12:22:50,201 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-01 12:22:50,201 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 12:22:50,201 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 12:22:50,201 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 12:22:50,201 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 12:22:50,201 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 12:22:50,202 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 12:22:50,202 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 12:22:50,271 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 12:22:50,272 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 12:22:50,602 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 12:22:50,845 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 12:22:50,845 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 12:22:50,847 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:22:50 BoogieIcfgContainer
[2023-04-01 12:22:50,847 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 12:22:50,850 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 12:22:50,850 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 12:22:50,852 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 12:22:50,852 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:22:49" (1/3) ...
[2023-04-01 12:22:50,853 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7c5e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:22:50, skipping insertion in model container
[2023-04-01 12:22:50,853 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:22:50" (2/3) ...
[2023-04-01 12:22:50,853 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7c5e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:22:50, skipping insertion in model container
[2023-04-01 12:22:50,853 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:22:50" (3/3) ...
[2023-04-01 12:22:50,854 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c
[2023-04-01 12:22:50,886 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 12:22:50,886 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 12:22:50,924 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 12:22:50,928 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@406a657f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 12:22:50,928 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 12:22:50,931 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 12:22:50,936 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2023-04-01 12:22:50,936 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 12:22:50,937 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 12:22:50,937 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 12:22:50,940 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 12:22:50,941 INFO  L85        PathProgramCache]: Analyzing trace with hash 1606734042, now seen corresponding path program 1 times
[2023-04-01 12:22:50,947 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 12:22:50,947 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492043173]
[2023-04-01 12:22:50,947 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 12:22:50,948 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 12:22:51,183 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 12:22:53,342 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 12:22:53,343 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 12:22:53,343 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492043173]
[2023-04-01 12:22:53,343 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492043173] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 12:22:53,344 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 12:22:53,344 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23
[2023-04-01 12:22:53,345 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52897294]
[2023-04-01 12:22:53,346 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 12:22:53,349 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2023-04-01 12:22:53,349 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 12:22:53,375 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2023-04-01 12:22:53,377 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506
[2023-04-01 12:22:53,379 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 12:22:54,643 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 12:22:54,644 INFO  L93              Difference]: Finished difference Result 106 states and 116 transitions.
[2023-04-01 12:22:54,645 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. 
[2023-04-01 12:22:54,646 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 12:22:54,647 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 12:22:54,653 INFO  L225             Difference]: With dead ends: 106
[2023-04-01 12:22:54,653 INFO  L226             Difference]: Without dead ends: 68
[2023-04-01 12:22:54,659 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=454, Invalid=2096, Unknown=0, NotChecked=0, Total=2550
[2023-04-01 12:22:54,662 INFO  L413           NwaCegarLoop]: 23 mSDtfsCounter, 143 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time
[2023-04-01 12:22:54,663 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 196 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-04-01 12:22:54,675 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2023-04-01 12:22:54,701 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58.
[2023-04-01 12:22:54,703 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 12:22:54,704 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions.
[2023-04-01 12:22:54,705 INFO  L78                 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 31
[2023-04-01 12:22:54,706 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 12:22:54,706 INFO  L495      AbstractCegarLoop]: Abstraction has 58 states and 58 transitions.
[2023-04-01 12:22:54,707 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 12:22:54,707 INFO  L276                IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions.
[2023-04-01 12:22:54,709 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2023-04-01 12:22:54,709 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 12:22:54,709 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 12:22:54,710 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 12:22:54,710 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 12:22:54,710 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 12:22:54,710 INFO  L85        PathProgramCache]: Analyzing trace with hash -822453899, now seen corresponding path program 1 times
[2023-04-01 12:22:54,710 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 12:22:54,711 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647030961]
[2023-04-01 12:22:54,711 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 12:22:54,711 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 12:22:54,927 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 12:23:01,756 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 12:23:01,757 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 12:23:01,757 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647030961]
[2023-04-01 12:23:01,757 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647030961] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 12:23:01,757 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578344622]
[2023-04-01 12:23:01,757 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 12:23:01,757 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 12:23:01,757 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 12:23:01,771 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 12:23:01,775 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 12:23:01,958 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 12:23:01,969 INFO  L262         TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 180 conjunts are in the unsatisfiable core
[2023-04-01 12:23:01,985 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 12:23:30,752 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 12:23:30,752 INFO  L327         TraceCheckSpWp]: Computing backward predicates...