/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.3.ufo.BOUNDED-6.pals.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-01 06:17:58,508 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-01 06:17:58,510 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-01 06:17:58,547 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-01 06:17:58,547 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-01 06:17:58,548 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-01 06:17:58,549 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-01 06:17:58,550 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-01 06:17:58,551 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-01 06:17:58,569 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-01 06:17:58,570 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-01 06:17:58,570 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-01 06:17:58,571 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-04-01 06:17:58,571 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-04-01 06:17:58,572 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-01 06:17:58,573 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-01 06:17:58,573 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-01 06:17:58,574 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-01 06:17:58,575 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-01 06:17:58,576 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-01 06:17:58,577 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-01 06:17:58,580 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-01 06:17:58,581 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-01 06:17:58,583 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-01 06:17:58,590 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-04-01 06:17:58,590 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-04-01 06:17:58,590 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-04-01 06:17:58,590 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-04-01 06:17:58,591 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-04-01 06:17:58,591 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-01 06:17:58,591 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-04-01 06:17:58,592 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-04-01 06:17:58,592 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-04-01 06:17:58,593 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-01 06:17:58,593 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-04-01 06:17:58,593 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2023-04-01 06:17:58,594 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-04-01 06:17:58,594 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-04-01 06:17:58,594 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2023-04-01 06:17:58,595 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2023-04-01 06:17:58,595 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-01 06:17:58,601 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 06:17:58,622 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-01 06:17:58,623 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-01 06:17:58,623 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-01 06:17:58,623 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-01 06:17:58,624 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-01 06:17:58,624 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-01 06:17:58,624 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-01 06:17:58,624 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-01 06:17:58,624 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-01 06:17:58,624 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-01 06:17:58,625 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-01 06:17:58,625 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-01 06:17:58,625 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-01 06:17:58,625 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-01 06:17:58,625 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-01 06:17:58,625 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-01 06:17:58,626 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-01 06:17:58,626 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-01 06:17:58,626 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-01 06:17:58,626 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-01 06:17:58,626 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-01 06:17:58,626 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-01 06:17:58,626 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-01 06:17:58,627 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-01 06:17:58,627 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-01 06:17:58,627 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-01 06:17:58,627 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-01 06:17:58,627 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-01 06:17:58,627 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-01 06:17:58,627 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-01 06:17:58,627 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-01 06:17:58,627 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-01 06:17:58,628 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 06:17:58,628 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-01 06:17:58,628 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-01 06:17:58,628 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-01 06:17:58,628 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-01 06:17:58,628 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-01 06:17:58,628 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-01 06:17:58,628 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-01 06:17:58,628 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-01 06:17:58,628 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-01 06:17:58,826 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-01 06:17:58,844 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-01 06:17:58,846 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-01 06:17:58,847 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-01 06:17:58,848 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-01 06:17:58,849 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c
[2023-04-01 06:17:59,874 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-01 06:18:00,030 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-01 06:18:00,031 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c
[2023-04-01 06:18:00,037 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b164e136f/0de96220d84744dca6f112dcad2244ca/FLAG56423b6c1
[2023-04-01 06:18:00,051 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b164e136f/0de96220d84744dca6f112dcad2244ca
[2023-04-01 06:18:00,053 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-01 06:18:00,054 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-01 06:18:00,055 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-01 06:18:00,055 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-01 06:18:00,057 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-01 06:18:00,057 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:18:00" (1/1) ...
[2023-04-01 06:18:00,059 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f0daf33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:18:00, skipping insertion in model container
[2023-04-01 06:18:00,059 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 06:18:00" (1/1) ...
[2023-04-01 06:18:00,063 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-01 06:18:00,096 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-01 06:18:00,207 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.3.ufo.BOUNDED-6.pals.c[5947,5960]
[2023-04-01 06:18:00,210 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 06:18:00,227 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-01 06:18:00,258 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.3.ufo.BOUNDED-6.pals.c[5947,5960]
[2023-04-01 06:18:00,258 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-01 06:18:00,268 INFO  L208         MainTranslator]: Completed translation
[2023-04-01 06:18:00,269 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:18:00 WrapperNode
[2023-04-01 06:18:00,269 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-01 06:18:00,270 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-01 06:18:00,270 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-01 06:18:00,270 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-01 06:18:00,293 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:18:00" (1/1) ...
[2023-04-01 06:18:00,293 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:18:00" (1/1) ...
[2023-04-01 06:18:00,298 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:18:00" (1/1) ...
[2023-04-01 06:18:00,298 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:18:00" (1/1) ...
[2023-04-01 06:18:00,303 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:18:00" (1/1) ...
[2023-04-01 06:18:00,319 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:18:00" (1/1) ...
[2023-04-01 06:18:00,320 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:18:00" (1/1) ...
[2023-04-01 06:18:00,321 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:18:00" (1/1) ...
[2023-04-01 06:18:00,323 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-01 06:18:00,324 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-01 06:18:00,324 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-01 06:18:00,324 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-01 06:18:00,325 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:18:00" (1/1) ...
[2023-04-01 06:18:00,329 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-01 06:18:00,336 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 06:18:00,349 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 06:18:00,351 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 06:18:00,389 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-01 06:18:00,396 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-01 06:18:00,396 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-01 06:18:00,398 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-01 06:18:00,398 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-01 06:18:00,398 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-01 06:18:00,398 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-01 06:18:00,400 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-01 06:18:00,400 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-01 06:18:00,401 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-01 06:18:00,401 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-01 06:18:00,401 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-01 06:18:00,401 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-01 06:18:00,401 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-01 06:18:00,401 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-01 06:18:00,401 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-01 06:18:00,401 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-01 06:18:00,401 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-01 06:18:00,401 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-01 06:18:00,401 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-01 06:18:00,401 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-01 06:18:00,401 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-01 06:18:00,401 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-01 06:18:00,402 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-01 06:18:00,402 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-01 06:18:00,402 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-01 06:18:00,402 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-01 06:18:00,402 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-01 06:18:00,402 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-01 06:18:00,402 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-01 06:18:00,402 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-01 06:18:00,490 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-01 06:18:00,492 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-01 06:18:00,862 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-01 06:18:01,072 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-01 06:18:01,072 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-01 06:18:01,075 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:18:01 BoogieIcfgContainer
[2023-04-01 06:18:01,075 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-01 06:18:01,079 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-01 06:18:01,079 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-01 06:18:01,081 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-01 06:18:01,081 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 06:18:00" (1/3) ...
[2023-04-01 06:18:01,082 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dfe04d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:18:01, skipping insertion in model container
[2023-04-01 06:18:01,082 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 06:18:00" (2/3) ...
[2023-04-01 06:18:01,082 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dfe04d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 06:18:01, skipping insertion in model container
[2023-04-01 06:18:01,082 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 06:18:01" (3/3) ...
[2023-04-01 06:18:01,085 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c
[2023-04-01 06:18:01,098 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-01 06:18:01,098 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-01 06:18:01,138 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-01 06:18:01,143 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;@4f00e67b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-01 06:18:01,143 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-01 06:18:01,146 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 40 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 23 states have internal predecessors, (28), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2023-04-01 06:18:01,151 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2023-04-01 06:18:01,151 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:18:01,152 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]
[2023-04-01 06:18:01,152 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:18:01,156 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:18:01,156 INFO  L85        PathProgramCache]: Analyzing trace with hash 543618519, now seen corresponding path program 1 times
[2023-04-01 06:18:01,162 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:18:01,162 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956638746]
[2023-04-01 06:18:01,163 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:18:01,163 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:18:01,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:18:02,445 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 06:18:02,445 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:18:02,445 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956638746]
[2023-04-01 06:18:02,446 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956638746] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 06:18:02,446 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 06:18:02,446 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2023-04-01 06:18:02,447 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674582010]
[2023-04-01 06:18:02,447 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 06:18:02,450 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-04-01 06:18:02,451 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 06:18:02,481 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-04-01 06:18:02,483 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210
[2023-04-01 06:18:02,484 INFO  L87              Difference]: Start difference. First operand  has 40 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 23 states have internal predecessors, (28), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand  has 15 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 6 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6)
[2023-04-01 06:18:02,893 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 06:18:02,893 INFO  L93              Difference]: Finished difference Result 125 states and 145 transitions.
[2023-04-01 06:18:02,894 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2023-04-01 06:18:02,895 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 6 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30
[2023-04-01 06:18:02,895 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 06:18:02,900 INFO  L225             Difference]: With dead ends: 125
[2023-04-01 06:18:02,900 INFO  L226             Difference]: Without dead ends: 82
[2023-04-01 06:18:02,903 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506
[2023-04-01 06:18:02,905 INFO  L413           NwaCegarLoop]: 24 mSDtfsCounter, 239 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-04-01 06:18:02,906 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 128 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-04-01 06:18:02,930 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2023-04-01 06:18:02,947 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 56.
[2023-04-01 06:18:02,948 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 32 states have (on average 1.1875) internal successors, (38), 33 states have internal predecessors, (38), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12)
[2023-04-01 06:18:02,949 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions.
[2023-04-01 06:18:02,950 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 30
[2023-04-01 06:18:02,950 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 06:18:02,950 INFO  L495      AbstractCegarLoop]: Abstraction has 56 states and 62 transitions.
[2023-04-01 06:18:02,950 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 6 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6)
[2023-04-01 06:18:02,951 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions.
[2023-04-01 06:18:02,952 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2023-04-01 06:18:02,952 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:18:02,952 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 06:18:02,952 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-01 06:18:02,952 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:18:02,953 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:18:02,953 INFO  L85        PathProgramCache]: Analyzing trace with hash -857202552, now seen corresponding path program 1 times
[2023-04-01 06:18:02,953 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:18:02,953 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159455758]
[2023-04-01 06:18:02,953 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:18:02,953 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:18:02,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:18:03,178 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 06:18:03,179 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:18:03,179 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159455758]
[2023-04-01 06:18:03,179 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159455758] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 06:18:03,179 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 06:18:03,179 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-04-01 06:18:03,179 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296209730]
[2023-04-01 06:18:03,180 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 06:18:03,181 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-04-01 06:18:03,181 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 06:18:03,182 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-04-01 06:18:03,182 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2023-04-01 06:18:03,182 INFO  L87              Difference]: Start difference. First operand 56 states and 62 transitions. Second operand  has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6)
[2023-04-01 06:18:03,373 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 06:18:03,374 INFO  L93              Difference]: Finished difference Result 116 states and 127 transitions.
[2023-04-01 06:18:03,374 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-04-01 06:18:03,374 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 32
[2023-04-01 06:18:03,374 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 06:18:03,375 INFO  L225             Difference]: With dead ends: 116
[2023-04-01 06:18:03,375 INFO  L226             Difference]: Without dead ends: 85
[2023-04-01 06:18:03,376 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2023-04-01 06:18:03,377 INFO  L413           NwaCegarLoop]: 21 mSDtfsCounter, 67 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-01 06:18:03,377 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 73 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-01 06:18:03,377 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2023-04-01 06:18:03,385 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 56.
[2023-04-01 06:18:03,386 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11)
[2023-04-01 06:18:03,386 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions.
[2023-04-01 06:18:03,386 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 32
[2023-04-01 06:18:03,387 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 06:18:03,387 INFO  L495      AbstractCegarLoop]: Abstraction has 56 states and 60 transitions.
[2023-04-01 06:18:03,387 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6)
[2023-04-01 06:18:03,387 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions.
[2023-04-01 06:18:03,387 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2023-04-01 06:18:03,387 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:18:03,388 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 06:18:03,388 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-01 06:18:03,388 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:18:03,388 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:18:03,388 INFO  L85        PathProgramCache]: Analyzing trace with hash 2137120959, now seen corresponding path program 1 times
[2023-04-01 06:18:03,388 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:18:03,388 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575099790]
[2023-04-01 06:18:03,389 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:18:03,389 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:18:03,406 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:18:04,033 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 06:18:04,033 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:18:04,033 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575099790]
[2023-04-01 06:18:04,034 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575099790] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 06:18:04,034 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 06:18:04,034 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2023-04-01 06:18:04,034 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837672250]
[2023-04-01 06:18:04,034 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 06:18:04,034 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-04-01 06:18:04,034 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 06:18:04,035 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-04-01 06:18:04,035 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240
[2023-04-01 06:18:04,035 INFO  L87              Difference]: Start difference. First operand 56 states and 60 transitions. Second operand  has 16 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 7 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2023-04-01 06:18:04,647 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 06:18:04,648 INFO  L93              Difference]: Finished difference Result 120 states and 131 transitions.
[2023-04-01 06:18:04,648 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2023-04-01 06:18:04,648 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 7 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 32
[2023-04-01 06:18:04,648 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 06:18:04,650 INFO  L225             Difference]: With dead ends: 120
[2023-04-01 06:18:04,650 INFO  L226             Difference]: Without dead ends: 90
[2023-04-01 06:18:04,650 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=232, Invalid=890, Unknown=0, NotChecked=0, Total=1122
[2023-04-01 06:18:04,651 INFO  L413           NwaCegarLoop]: 20 mSDtfsCounter, 201 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-04-01 06:18:04,652 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 92 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-04-01 06:18:04,652 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2023-04-01 06:18:04,679 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 56.
[2023-04-01 06:18:04,679 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11)
[2023-04-01 06:18:04,680 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions.
[2023-04-01 06:18:04,680 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 32
[2023-04-01 06:18:04,680 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 06:18:04,680 INFO  L495      AbstractCegarLoop]: Abstraction has 56 states and 59 transitions.
[2023-04-01 06:18:04,681 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 7 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2023-04-01 06:18:04,681 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions.
[2023-04-01 06:18:04,681 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2023-04-01 06:18:04,682 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:18:04,682 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 06:18:04,682 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-01 06:18:04,682 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:18:04,682 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:18:04,682 INFO  L85        PathProgramCache]: Analyzing trace with hash -1414527396, now seen corresponding path program 1 times
[2023-04-01 06:18:04,682 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:18:04,683 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905469234]
[2023-04-01 06:18:04,683 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:18:04,683 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:18:04,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:18:04,835 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 06:18:04,835 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:18:04,835 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905469234]
[2023-04-01 06:18:04,835 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905469234] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-01 06:18:04,835 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-01 06:18:04,835 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-04-01 06:18:04,835 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813203913]
[2023-04-01 06:18:04,836 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-01 06:18:04,836 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-04-01 06:18:04,836 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-01 06:18:04,836 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-04-01 06:18:04,836 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-04-01 06:18:04,837 INFO  L87              Difference]: Start difference. First operand 56 states and 59 transitions. Second operand  has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6)
[2023-04-01 06:18:04,936 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-01 06:18:04,936 INFO  L93              Difference]: Finished difference Result 91 states and 101 transitions.
[2023-04-01 06:18:04,938 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2023-04-01 06:18:04,939 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33
[2023-04-01 06:18:04,939 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-01 06:18:04,957 INFO  L225             Difference]: With dead ends: 91
[2023-04-01 06:18:04,957 INFO  L226             Difference]: Without dead ends: 89
[2023-04-01 06:18:04,957 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240
[2023-04-01 06:18:04,964 INFO  L413           NwaCegarLoop]: 44 mSDtfsCounter, 35 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-01 06:18:04,965 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 321 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-01 06:18:04,966 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2023-04-01 06:18:04,985 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65.
[2023-04-01 06:18:04,989 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 65 states, 38 states have (on average 1.105263157894737) internal successors, (42), 40 states have internal predecessors, (42), 13 states have call successors, (13), 13 states have call predecessors, (13), 13 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13)
[2023-04-01 06:18:04,991 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions.
[2023-04-01 06:18:04,991 INFO  L78                 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 33
[2023-04-01 06:18:04,991 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-01 06:18:04,992 INFO  L495      AbstractCegarLoop]: Abstraction has 65 states and 68 transitions.
[2023-04-01 06:18:04,992 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6)
[2023-04-01 06:18:04,992 INFO  L276                IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions.
[2023-04-01 06:18:04,994 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2023-04-01 06:18:04,994 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-01 06:18:04,994 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-04-01 06:18:04,994 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-01 06:18:04,995 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-01 06:18:04,995 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-01 06:18:04,995 INFO  L85        PathProgramCache]: Analyzing trace with hash -186027022, now seen corresponding path program 1 times
[2023-04-01 06:18:04,995 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-01 06:18:04,995 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569472284]
[2023-04-01 06:18:04,995 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:18:04,996 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-01 06:18:05,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:18:07,904 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-04-01 06:18:07,904 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-01 06:18:07,905 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569472284]
[2023-04-01 06:18:07,905 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569472284] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-01 06:18:07,905 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433088345]
[2023-04-01 06:18:07,905 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-01 06:18:07,905 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-01 06:18:07,905 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-01 06:18:07,908 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 06:18:07,930 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 06:18:08,058 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-01 06:18:08,078 INFO  L262         TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 102 conjunts are in the unsatisfiable core
[2023-04-01 06:18:08,086 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-01 06:18:17,019 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-01 06:18:17,020 INFO  L327         TraceCheckSpWp]: Computing backward predicates...