/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.3.1.ufo.UNBOUNDED.pals.c


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


This is Ultimate 0.2.3-dev-f954360
[2023-04-03 01:49:35,000 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2023-04-03 01:49:35,002 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2023-04-03 01:49:35,038 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-04-03 01:49:35,039 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-04-03 01:49:35,042 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-04-03 01:49:35,045 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-04-03 01:49:35,048 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2023-04-03 01:49:35,049 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-04-03 01:49:35,054 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-04-03 01:49:35,056 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2023-04-03 01:49:35,058 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-04-03 01:49:35,058 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-04-03 01:49:35,060 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-04-03 01:49:35,063 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-04-03 01:49:35,064 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-04-03 01:49:35,065 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-04-03 01:49:35,066 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-04-03 01:49:35,069 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-04-03 01:49:35,074 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2023-04-03 01:49:35,075 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-04-03 01:49:35,076 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-04-03 01:49:35,077 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2023-04-03 01:49:35,079 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-04-03 01:49:35,087 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2023-04-03 01:49:35,087 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2023-04-03 01:49:35,090 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-04-03 01:49:35,090 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2023-04-03 01:49:35,092 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2023-04-03 01:49:35,093 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-04-03 01:49:35,093 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2023-04-03 01:49:35,094 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2023-04-03 01:49:35,095 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2023-04-03 01:49:35,096 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
[2023-04-03 01:49:35,126 INFO  L113        SettingsManager]: Loading preferences was successful
[2023-04-03 01:49:35,126 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2023-04-03 01:49:35,126 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-04-03 01:49:35,127 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-04-03 01:49:35,128 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-04-03 01:49:35,128 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-04-03 01:49:35,128 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2023-04-03 01:49:35,128 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2023-04-03 01:49:35,128 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2023-04-03 01:49:35,128 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2023-04-03 01:49:35,129 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2023-04-03 01:49:35,129 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2023-04-03 01:49:35,129 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2023-04-03 01:49:35,129 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2023-04-03 01:49:35,130 INFO  L138        SettingsManager]:  * Interval Domain=false
[2023-04-03 01:49:35,130 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2023-04-03 01:49:35,130 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2023-04-03 01:49:35,130 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2023-04-03 01:49:35,131 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-04-03 01:49:35,131 INFO  L138        SettingsManager]:  * sizeof long=4
[2023-04-03 01:49:35,131 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-04-03 01:49:35,131 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2023-04-03 01:49:35,131 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2023-04-03 01:49:35,132 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-04-03 01:49:35,132 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-04-03 01:49:35,132 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-04-03 01:49:35,132 INFO  L138        SettingsManager]:  * sizeof long double=12
[2023-04-03 01:49:35,132 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2023-04-03 01:49:35,132 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2023-04-03 01:49:35,132 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-04-03 01:49:35,132 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-04-03 01:49:35,133 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-04-03 01:49:35,133 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-03 01:49:35,133 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-04-03 01:49:35,133 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2023-04-03 01:49:35,133 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-04-03 01:49:35,133 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2023-04-03 01:49:35,134 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2023-04-03 01:49:35,134 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-04-03 01:49:35,134 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-04-03 01:49:35,134 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2023-04-03 01:49:35,134 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain
[2023-04-03 01:49:35,365 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-04-03 01:49:35,391 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-04-03 01:49:35,393 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-04-03 01:49:35,394 INFO  L271        PluginConnector]: Initializing CDTParser...
[2023-04-03 01:49:35,395 INFO  L275        PluginConnector]: CDTParser initialized
[2023-04-03 01:49:35,396 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c
[2023-04-03 01:49:36,583 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2023-04-03 01:49:36,820 INFO  L351              CDTParser]: Found 1 translation units.
[2023-04-03 01:49:36,821 INFO  L172              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.UNBOUNDED.pals.c
[2023-04-03 01:49:36,830 INFO  L394              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10afd1964/7bd922d5221d45d0bfef9f6158bdcb16/FLAGcfd3784f2
[2023-04-03 01:49:36,847 INFO  L402              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10afd1964/7bd922d5221d45d0bfef9f6158bdcb16
[2023-04-03 01:49:36,850 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-04-03 01:49:36,851 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2023-04-03 01:49:36,854 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-04-03 01:49:36,855 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-04-03 01:49:36,859 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-04-03 01:49:36,860 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:49:36" (1/1) ...
[2023-04-03 01:49:36,861 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296ddb0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:36, skipping insertion in model container
[2023-04-03 01:49:36,861 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:49:36" (1/1) ...
[2023-04-03 01:49:36,867 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2023-04-03 01:49:36,896 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2023-04-03 01:49:37,060 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.3.1.ufo.UNBOUNDED.pals.c[6080,6093]
[2023-04-03 01:49:37,063 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-03 01:49:37,078 INFO  L203         MainTranslator]: Completed pre-run
[2023-04-03 01:49:37,126 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.3.1.ufo.UNBOUNDED.pals.c[6080,6093]
[2023-04-03 01:49:37,127 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-04-03 01:49:37,142 INFO  L208         MainTranslator]: Completed translation
[2023-04-03 01:49:37,142 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:37 WrapperNode
[2023-04-03 01:49:37,142 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-04-03 01:49:37,143 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-04-03 01:49:37,143 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2023-04-03 01:49:37,143 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2023-04-03 01:49:37,152 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:37" (1/1) ...
[2023-04-03 01:49:37,152 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:37" (1/1) ...
[2023-04-03 01:49:37,159 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:37" (1/1) ...
[2023-04-03 01:49:37,159 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:37" (1/1) ...
[2023-04-03 01:49:37,166 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:37" (1/1) ...
[2023-04-03 01:49:37,171 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:37" (1/1) ...
[2023-04-03 01:49:37,173 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:37" (1/1) ...
[2023-04-03 01:49:37,174 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:37" (1/1) ...
[2023-04-03 01:49:37,176 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-04-03 01:49:37,177 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-04-03 01:49:37,177 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2023-04-03 01:49:37,177 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2023-04-03 01:49:37,178 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:37" (1/1) ...
[2023-04-03 01:49:37,183 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-04-03 01:49:37,193 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-03 01:49:37,206 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)
[2023-04-03 01:49:37,219 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
[2023-04-03 01:49:37,240 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2023-04-03 01:49:37,241 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-04-03 01:49:37,241 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2023-04-03 01:49:37,241 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-04-03 01:49:37,241 INFO  L138     BoogieDeclarations]: Found implementation of procedure node1
[2023-04-03 01:49:37,241 INFO  L138     BoogieDeclarations]: Found implementation of procedure node2
[2023-04-03 01:49:37,241 INFO  L138     BoogieDeclarations]: Found implementation of procedure node3
[2023-04-03 01:49:37,241 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2023-04-03 01:49:37,241 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2023-04-03 01:49:37,241 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2023-04-03 01:49:37,242 INFO  L138     BoogieDeclarations]: Found implementation of procedure assert
[2023-04-03 01:49:37,242 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2023-04-03 01:49:37,242 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2023-04-03 01:49:37,242 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2023-04-03 01:49:37,242 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-04-03 01:49:37,242 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2023-04-03 01:49:37,242 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2023-04-03 01:49:37,242 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2023-04-03 01:49:37,242 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2023-04-03 01:49:37,243 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-04-03 01:49:37,243 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2023-04-03 01:49:37,243 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2023-04-03 01:49:37,243 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2023-04-03 01:49:37,243 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2023-04-03 01:49:37,243 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2023-04-03 01:49:37,243 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2023-04-03 01:49:37,243 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2023-04-03 01:49:37,243 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2023-04-03 01:49:37,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2023-04-03 01:49:37,244 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2023-04-03 01:49:37,244 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-04-03 01:49:37,244 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2023-04-03 01:49:37,244 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2023-04-03 01:49:37,244 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-04-03 01:49:37,321 INFO  L236             CfgBuilder]: Building ICFG
[2023-04-03 01:49:37,327 INFO  L262             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-04-03 01:49:37,668 INFO  L277             CfgBuilder]: Performing block encoding
[2023-04-03 01:49:37,896 INFO  L297             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-04-03 01:49:37,896 INFO  L302             CfgBuilder]: Removed 1 assume(true) statements.
[2023-04-03 01:49:37,899 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:49:37 BoogieIcfgContainer
[2023-04-03 01:49:37,899 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-04-03 01:49:37,902 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-04-03 01:49:37,902 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2023-04-03 01:49:37,905 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2023-04-03 01:49:37,905 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:49:36" (1/3) ...
[2023-04-03 01:49:37,906 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ed8da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:49:37, skipping insertion in model container
[2023-04-03 01:49:37,906 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:49:37" (2/3) ...
[2023-04-03 01:49:37,906 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ed8da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:49:37, skipping insertion in model container
[2023-04-03 01:49:37,907 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:49:37" (3/3) ...
[2023-04-03 01:49:37,912 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c
[2023-04-03 01:49:37,929 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-04-03 01:49:37,929 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-04-03 01:49:37,980 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-04-03 01:49:37,985 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;@32fb2fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-04-03 01:49:37,985 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-04-03 01:49:37,989 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 43 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 25 states have internal predecessors, (29), 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)
[2023-04-03 01:49:37,995 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2023-04-03 01:49:37,995 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:49:37,996 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, 1]
[2023-04-03 01:49:37,996 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:49:38,000 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:49:38,000 INFO  L85        PathProgramCache]: Analyzing trace with hash 423353423, now seen corresponding path program 1 times
[2023-04-03 01:49:38,024 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:49:38,024 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891441948]
[2023-04-03 01:49:38,025 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:49:38,025 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:49:38,253 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:49:40,073 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:49:40,074 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:49:40,074 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891441948]
[2023-04-03 01:49:40,074 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891441948] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:49:40,075 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:49:40,075 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19
[2023-04-03 01:49:40,076 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31261686]
[2023-04-03 01:49:40,077 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:49:40,081 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2023-04-03 01:49:40,082 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:49:40,119 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2023-04-03 01:49:40,120 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342
[2023-04-03 01:49:40,122 INFO  L87              Difference]: Start difference. First operand  has 43 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 25 states have internal predecessors, (29), 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 19 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 8 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-04-03 01:49:41,160 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:49:41,160 INFO  L93              Difference]: Finished difference Result 97 states and 115 transitions.
[2023-04-03 01:49:41,162 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2023-04-03 01:49:41,163 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 8 states have call successors, (9), 6 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 34
[2023-04-03 01:49:41,163 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:49:41,170 INFO  L225             Difference]: With dead ends: 97
[2023-04-03 01:49:41,171 INFO  L226             Difference]: Without dead ends: 67
[2023-04-03 01:49:41,174 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=346, Invalid=1460, Unknown=0, NotChecked=0, Total=1806
[2023-04-03 01:49:41,179 INFO  L413           NwaCegarLoop]: 19 mSDtfsCounter, 240 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-04-03 01:49:41,200 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 85 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-04-03 01:49:41,216 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2023-04-03 01:49:41,250 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56.
[2023-04-03 01:49:41,251 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 56 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (13), 11 states have call predecessors, (13), 12 states have call successors, (13)
[2023-04-03 01:49:41,253 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions.
[2023-04-03 01:49:41,254 INFO  L78                 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 34
[2023-04-03 01:49:41,256 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:49:41,256 INFO  L495      AbstractCegarLoop]: Abstraction has 56 states and 60 transitions.
[2023-04-03 01:49:41,256 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 8 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2023-04-03 01:49:41,257 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions.
[2023-04-03 01:49:41,258 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2023-04-03 01:49:41,259 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:49:41,259 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, 1, 1, 1]
[2023-04-03 01:49:41,259 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-04-03 01:49:41,260 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:49:41,260 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:49:41,260 INFO  L85        PathProgramCache]: Analyzing trace with hash -323851272, now seen corresponding path program 1 times
[2023-04-03 01:49:41,261 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:49:41,261 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236741999]
[2023-04-03 01:49:41,261 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:49:41,261 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:49:41,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:49:41,893 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:49:41,894 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:49:41,894 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236741999]
[2023-04-03 01:49:41,895 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236741999] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:49:41,895 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:49:41,895 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2023-04-03 01:49:41,895 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927068760]
[2023-04-03 01:49:41,895 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:49:41,897 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-04-03 01:49:41,898 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:49:41,899 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-04-03 01:49:41,901 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2023-04-03 01:49:41,902 INFO  L87              Difference]: Start difference. First operand 56 states and 60 transitions. Second operand  has 11 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7)
[2023-04-03 01:49:42,301 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:49:42,301 INFO  L93              Difference]: Finished difference Result 129 states and 143 transitions.
[2023-04-03 01:49:42,302 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-04-03 01:49:42,302 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 36
[2023-04-03 01:49:42,302 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:49:42,305 INFO  L225             Difference]: With dead ends: 129
[2023-04-03 01:49:42,305 INFO  L226             Difference]: Without dead ends: 100
[2023-04-03 01:49:42,309 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272
[2023-04-03 01:49:42,311 INFO  L413           NwaCegarLoop]: 26 mSDtfsCounter, 77 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-04-03 01:49:42,312 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 99 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-04-03 01:49:42,314 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2023-04-03 01:49:42,344 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 85.
[2023-04-03 01:49:42,345 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 85 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 50 states have internal predecessors, (55), 18 states have call successors, (18), 18 states have call predecessors, (18), 18 states have return successors, (19), 16 states have call predecessors, (19), 17 states have call successors, (19)
[2023-04-03 01:49:42,349 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions.
[2023-04-03 01:49:42,349 INFO  L78                 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 36
[2023-04-03 01:49:42,349 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:49:42,349 INFO  L495      AbstractCegarLoop]: Abstraction has 85 states and 92 transitions.
[2023-04-03 01:49:42,349 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 7 states have (on average 2.857142857142857) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7)
[2023-04-03 01:49:42,350 INFO  L276                IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions.
[2023-04-03 01:49:42,351 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2023-04-03 01:49:42,351 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:49:42,351 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, 1, 1, 1]
[2023-04-03 01:49:42,351 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-04-03 01:49:42,351 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:49:42,352 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:49:42,352 INFO  L85        PathProgramCache]: Analyzing trace with hash 1612891447, now seen corresponding path program 1 times
[2023-04-03 01:49:42,352 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:49:42,352 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427268137]
[2023-04-03 01:49:42,352 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:49:42,352 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:49:42,397 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:49:43,181 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:49:43,182 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:49:43,182 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427268137]
[2023-04-03 01:49:43,182 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427268137] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:49:43,183 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:49:43,184 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2023-04-03 01:49:43,184 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256512575]
[2023-04-03 01:49:43,184 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:49:43,185 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2023-04-03 01:49:43,185 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:49:43,186 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2023-04-03 01:49:43,187 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272
[2023-04-03 01:49:43,187 INFO  L87              Difference]: Start difference. First operand 85 states and 92 transitions. Second operand  has 17 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7)
[2023-04-03 01:49:43,659 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:49:43,660 INFO  L93              Difference]: Finished difference Result 164 states and 179 transitions.
[2023-04-03 01:49:43,660 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2023-04-03 01:49:43,660 INFO  L78                 Accepts]: Start accepts. Automaton has  has 17 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 36
[2023-04-03 01:49:43,661 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:49:43,662 INFO  L225             Difference]: With dead ends: 164
[2023-04-03 01:49:43,662 INFO  L226             Difference]: Without dead ends: 109
[2023-04-03 01:49:43,663 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650
[2023-04-03 01:49:43,663 INFO  L413           NwaCegarLoop]: 20 mSDtfsCounter, 184 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-04-03 01:49:43,664 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 104 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-04-03 01:49:43,665 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2023-04-03 01:49:43,687 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 85.
[2023-04-03 01:49:43,687 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 85 states, 48 states have (on average 1.125) internal successors, (54), 50 states have internal predecessors, (54), 18 states have call successors, (18), 18 states have call predecessors, (18), 18 states have return successors, (19), 16 states have call predecessors, (19), 17 states have call successors, (19)
[2023-04-03 01:49:43,688 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions.
[2023-04-03 01:49:43,688 INFO  L78                 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 36
[2023-04-03 01:49:43,688 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:49:43,689 INFO  L495      AbstractCegarLoop]: Abstraction has 85 states and 91 transitions.
[2023-04-03 01:49:43,689 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 17 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 11 states have internal predecessors, (20), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7)
[2023-04-03 01:49:43,689 INFO  L276                IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions.
[2023-04-03 01:49:43,690 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2023-04-03 01:49:43,690 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:49:43,690 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, 1, 1, 1, 1]
[2023-04-03 01:49:43,690 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-04-03 01:49:43,690 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:49:43,691 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:49:43,691 INFO  L85        PathProgramCache]: Analyzing trace with hash -2006878788, now seen corresponding path program 1 times
[2023-04-03 01:49:43,691 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:49:43,691 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420968816]
[2023-04-03 01:49:43,691 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:49:43,691 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:49:43,724 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:49:44,260 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:49:44,260 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:49:44,261 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420968816]
[2023-04-03 01:49:44,261 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420968816] provided 1 perfect and 0 imperfect interpolant sequences
[2023-04-03 01:49:44,261 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-04-03 01:49:44,261 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2023-04-03 01:49:44,261 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709526535]
[2023-04-03 01:49:44,261 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-04-03 01:49:44,262 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-04-03 01:49:44,263 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2023-04-03 01:49:44,263 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-04-03 01:49:44,263 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156
[2023-04-03 01:49:44,265 INFO  L87              Difference]: Start difference. First operand 85 states and 91 transitions. Second operand  has 13 states, 8 states have (on average 2.625) internal successors, (21), 10 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7)
[2023-04-03 01:49:44,546 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-04-03 01:49:44,546 INFO  L93              Difference]: Finished difference Result 118 states and 132 transitions.
[2023-04-03 01:49:44,547 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2023-04-03 01:49:44,547 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 8 states have (on average 2.625) internal successors, (21), 10 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 37
[2023-04-03 01:49:44,547 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-04-03 01:49:44,548 INFO  L225             Difference]: With dead ends: 118
[2023-04-03 01:49:44,548 INFO  L226             Difference]: Without dead ends: 116
[2023-04-03 01:49:44,549 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462
[2023-04-03 01:49:44,549 INFO  L413           NwaCegarLoop]: 45 mSDtfsCounter, 35 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-04-03 01:49:44,550 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 472 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-04-03 01:49:44,550 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2023-04-03 01:49:44,575 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 93.
[2023-04-03 01:49:44,575 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 93 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 56 states have internal predecessors, (59), 19 states have call successors, (19), 19 states have call predecessors, (19), 20 states have return successors, (21), 17 states have call predecessors, (21), 18 states have call successors, (21)
[2023-04-03 01:49:44,576 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions.
[2023-04-03 01:49:44,576 INFO  L78                 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 37
[2023-04-03 01:49:44,576 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-04-03 01:49:44,576 INFO  L495      AbstractCegarLoop]: Abstraction has 93 states and 99 transitions.
[2023-04-03 01:49:44,577 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 8 states have (on average 2.625) internal successors, (21), 10 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7)
[2023-04-03 01:49:44,577 INFO  L276                IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions.
[2023-04-03 01:49:44,578 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2023-04-03 01:49:44,578 INFO  L187           NwaCegarLoop]: Found error trace
[2023-04-03 01:49:44,578 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, 1, 1, 1]
[2023-04-03 01:49:44,578 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-04-03 01:49:44,578 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-04-03 01:49:44,579 INFO  L145       PredicateUnifier]: Initialized classic predicate unifier
[2023-04-03 01:49:44,579 INFO  L85        PathProgramCache]: Analyzing trace with hash -1474955851, now seen corresponding path program 1 times
[2023-04-03 01:49:44,579 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2023-04-03 01:49:44,579 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567795862]
[2023-04-03 01:49:44,579 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:49:44,579 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-04-03 01:49:44,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:49:48,896 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-04-03 01:49:48,897 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2023-04-03 01:49:48,897 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567795862]
[2023-04-03 01:49:48,897 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567795862] provided 0 perfect and 1 imperfect interpolant sequences
[2023-04-03 01:49:48,897 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404523438]
[2023-04-03 01:49:48,897 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-04-03 01:49:48,897 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-04-03 01:49:48,897 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-04-03 01:49:48,903 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)
[2023-04-03 01:49:48,913 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-04-03 01:49:49,064 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-04-03 01:49:49,090 INFO  L262         TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 125 conjunts are in the unsatisfiable core
[2023-04-03 01:49:49,101 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-04-03 01:50:00,807 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-04-03 01:50:00,808 INFO  L327         TraceCheckSpWp]: Computing backward predicates...