./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/sqrt1-ll_unwindbound5.yml/witness-2.1.yml --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 5189fb62
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c ../results/automizer-verification-files/SV-COMP24_unreach-call/sqrt1-ll_unwindbound5.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None
--- Real Ultimate output ---
This is Ultimate 0.2.4-dev-5189fb6-m
[2024-09-13 06:24:25,680 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-09-13 06:24:25,746 INFO  L114        SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-09-13 06:24:25,750 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-09-13 06:24:25,751 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-13 06:24:25,789 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-13 06:24:25,791 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-13 06:24:25,792 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-13 06:24:25,792 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-13 06:24:25,794 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-09-13 06:24:25,794 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-13 06:24:25,794 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-13 06:24:25,795 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-13 06:24:25,795 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-09-13 06:24:25,797 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-09-13 06:24:25,798 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-13 06:24:25,798 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-09-13 06:24:25,798 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-09-13 06:24:25,799 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-09-13 06:24:25,799 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-09-13 06:24:25,802 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-09-13 06:24:25,803 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-09-13 06:24:25,803 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-13 06:24:25,803 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-09-13 06:24:25,804 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-09-13 06:24:25,804 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-09-13 06:24:25,804 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-09-13 06:24:25,804 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-09-13 06:24:25,805 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-13 06:24:25,805 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-09-13 06:24:25,805 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-09-13 06:24:25,805 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-09-13 06:24:25,806 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-13 06:24:25,806 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-13 06:24:25,806 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-09-13 06:24:25,806 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-13 06:24:25,807 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-09-13 06:24:25,807 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-09-13 06:24:25,807 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-13 06:24:25,807 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-13 06:24:25,808 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-09-13 06:24:25,809 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-13 06:24:25,815 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
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/certificate-witnesses-artifact/automizer/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None
[2024-09-13 06:24:26,073 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-13 06:24:26,096 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-13 06:24:26,099 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-13 06:24:26,100 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-09-13 06:24:26,101 INFO  L274        PluginConnector]: CDTParser initialized
[2024-09-13 06:24:26,102 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c
[2024-09-13 06:24:27,503 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-09-13 06:24:27,727 INFO  L384              CDTParser]: Found 1 translation units.
[2024-09-13 06:24:27,728 INFO  L180              CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c
[2024-09-13 06:24:27,744 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0a21ff150/5120193e5e9c490993935e709ee82fb9/FLAG67c72b66b
[2024-09-13 06:24:27,760 INFO  L435              CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0a21ff150/5120193e5e9c490993935e709ee82fb9
[2024-09-13 06:24:27,763 INFO  L270        PluginConnector]: Initializing Witness Parser...
[2024-09-13 06:24:27,764 INFO  L274        PluginConnector]: Witness Parser initialized
[2024-09-13 06:24:27,766 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/sqrt1-ll_unwindbound5.yml/witness-2.1.yml
[2024-09-13 06:24:27,821 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-13 06:24:27,823 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-09-13 06:24:27,824 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-13 06:24:27,824 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-13 06:24:27,829 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-13 06:24:27,830 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:24:27" (1/2) ...
[2024-09-13 06:24:27,832 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245da715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:24:27, skipping insertion in model container
[2024-09-13 06:24:27,832 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:24:27" (1/2) ...
[2024-09-13 06:24:27,834 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2397aa16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:24:27, skipping insertion in model container
[2024-09-13 06:24:27,834 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:24:27" (2/2) ...
[2024-09-13 06:24:27,835 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245da715 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:27, skipping insertion in model container
[2024-09-13 06:24:27,835 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:24:27" (2/2) ...
[2024-09-13 06:24:27,841 INFO  L93    nessWitnessExtractor]: Found the following entries in the witness:
[2024-09-13 06:24:27,843 INFO  L1541             ArrayList]: Loop invariant at [L30-L42] (((((((__int128) a * 2) + ((__int128) a * a)) + 1) == s) && (\old(counter) == 0)) && (t == (((__int128) a * 2) + 1)))
[2024-09-13 06:24:27,843 INFO  L1541             ArrayList]: Function contract at [L11]: requires (\old(cond) != 0), ensures (\old(cond) != 0)
[2024-09-13 06:24:27,843 INFO  L1541             ArrayList]: Function contract at [L21]: requires (counter == 0), ensures (\old(counter) == 0)
[2024-09-13 06:24:27,866 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-09-13 06:24:28,041 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c[520,533]
[2024-09-13 06:24:28,060 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-09-13 06:24:28,070 INFO  L200         MainTranslator]: Completed pre-run
Start Parsing Global
Start Parsing Global
[2024-09-13 06:24:28,112 WARN  L247   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound5.c[520,533]
Start Parsing Global
Start Parsing Global
Start Parsing Local
[2024-09-13 06:24:28,125 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-09-13 06:24:28,145 INFO  L204         MainTranslator]: Completed translation
[2024-09-13 06:24:28,146 INFO  L201        PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28 WrapperNode
[2024-09-13 06:24:28,146 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-09-13 06:24:28,147 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-09-13 06:24:28,148 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-09-13 06:24:28,148 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-09-13 06:24:28,154 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28" (1/1) ...
[2024-09-13 06:24:28,162 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28" (1/1) ...
[2024-09-13 06:24:28,180 INFO  L138                Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43
[2024-09-13 06:24:28,180 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-09-13 06:24:28,181 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-09-13 06:24:28,181 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-09-13 06:24:28,182 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-09-13 06:24:28,191 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28" (1/1) ...
[2024-09-13 06:24:28,192 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28" (1/1) ...
[2024-09-13 06:24:28,193 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28" (1/1) ...
[2024-09-13 06:24:28,209 WARN  L109           MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification
[2024-09-13 06:24:28,212 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28" (1/1) ...
[2024-09-13 06:24:28,213 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28" (1/1) ...
[2024-09-13 06:24:28,215 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28" (1/1) ...
[2024-09-13 06:24:28,222 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28" (1/1) ...
[2024-09-13 06:24:28,225 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28" (1/1) ...
[2024-09-13 06:24:28,226 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28" (1/1) ...
[2024-09-13 06:24:28,228 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-09-13 06:24:28,232 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-09-13 06:24:28,232 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-09-13 06:24:28,232 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-09-13 06:24:28,233 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28" (1/1) ...
[2024-09-13 06:24:28,241 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-13 06:24:28,250 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-13 06:24:28,268 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-09-13 06:24:28,271 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-09-13 06:24:28,319 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-09-13 06:24:28,319 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2024-09-13 06:24:28,319 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-09-13 06:24:28,319 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-09-13 06:24:28,319 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-09-13 06:24:28,320 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-09-13 06:24:28,378 INFO  L242             CfgBuilder]: Building ICFG
[2024-09-13 06:24:28,380 INFO  L268             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-09-13 06:24:28,558 WARN  L783   $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2024-09-13 06:24:28,587 INFO  L?                        ?]: Removed 26 outVars from TransFormulas that were not future-live.
[2024-09-13 06:24:28,587 INFO  L291             CfgBuilder]: Performing block encoding
[2024-09-13 06:24:28,622 INFO  L313             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-09-13 06:24:28,622 INFO  L318             CfgBuilder]: Removed 1 assume(true) statements.
[2024-09-13 06:24:28,622 INFO  L201        PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:24:28 BoogieIcfgContainer
[2024-09-13 06:24:28,622 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-09-13 06:24:28,628 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-09-13 06:24:28,629 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-09-13 06:24:28,632 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-09-13 06:24:28,634 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 06:24:27" (1/4) ...
[2024-09-13 06:24:28,635 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0f6820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:24:28, skipping insertion in model container
[2024-09-13 06:24:28,636 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:24:27" (2/4) ...
[2024-09-13 06:24:28,637 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0f6820 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:24:28, skipping insertion in model container
[2024-09-13 06:24:28,637 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:24:28" (3/4) ...
[2024-09-13 06:24:28,637 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0f6820 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:24:28, skipping insertion in model container
[2024-09-13 06:24:28,637 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:24:28" (4/4) ...
[2024-09-13 06:24:28,638 INFO  L112   eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound5.c
[2024-09-13 06:24:28,655 INFO  L209   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-09-13 06:24:28,655 INFO  L149   ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations.
[2024-09-13 06:24:28,699 INFO  L335      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-09-13 06:24:28,708 INFO  L336      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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@1302064b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-09-13 06:24:28,708 INFO  L337      AbstractCegarLoop]: Starting to check reachability of 11 error locations.
[2024-09-13 06:24:28,712 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 31 states, 18 states have (on average 1.5) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-09-13 06:24:28,718 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3
[2024-09-13 06:24:28,718 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 06:24:28,719 INFO  L216           NwaCegarLoop]: trace histogram [1, 1]
[2024-09-13 06:24:28,719 INFO  L399      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] ===
[2024-09-13 06:24:28,725 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 06:24:28,726 INFO  L85        PathProgramCache]: Analyzing trace with hash 3041, now seen corresponding path program 1 times
[2024-09-13 06:24:28,736 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 06:24:28,736 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295625488]
[2024-09-13 06:24:28,737 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 06:24:28,737 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 06:24:28,818 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 06:24:28,887 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 06:24:28,888 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 06:24:28,888 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295625488]
[2024-09-13 06:24:28,889 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295625488] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 06:24:28,889 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 06:24:28,889 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2024-09-13 06:24:28,893 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743863891]
[2024-09-13 06:24:28,894 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 06:24:28,898 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-09-13 06:24:28,898 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 06:24:28,931 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-09-13 06:24:28,932 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-13 06:24:28,934 INFO  L87              Difference]: Start difference. First operand  has 31 states, 18 states have (on average 1.5) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand  has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 06:24:28,982 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 06:24:28,982 INFO  L93              Difference]: Finished difference Result 33 states and 39 transitions.
[2024-09-13 06:24:28,984 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-09-13 06:24:28,985 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2
[2024-09-13 06:24:28,986 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 06:24:28,992 INFO  L225             Difference]: With dead ends: 33
[2024-09-13 06:24:28,992 INFO  L226             Difference]: Without dead ends: 32
[2024-09-13 06:24:28,995 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-13 06:24:28,999 INFO  L434           NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 06:24:29,000 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 62 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 06:24:29,014 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2024-09-13 06:24:29,032 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29.
[2024-09-13 06:24:29,034 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 29 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-09-13 06:24:29,035 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions.
[2024-09-13 06:24:29,037 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 2
[2024-09-13 06:24:29,037 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 06:24:29,038 INFO  L474      AbstractCegarLoop]: Abstraction has 29 states and 35 transitions.
[2024-09-13 06:24:29,038 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 06:24:29,038 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions.
[2024-09-13 06:24:29,039 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2024-09-13 06:24:29,039 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 06:24:29,039 INFO  L216           NwaCegarLoop]: trace histogram [1, 1, 1]
[2024-09-13 06:24:29,040 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-09-13 06:24:29,041 INFO  L399      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] ===
[2024-09-13 06:24:29,041 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 06:24:29,041 INFO  L85        PathProgramCache]: Analyzing trace with hash 94308, now seen corresponding path program 1 times
[2024-09-13 06:24:29,042 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 06:24:29,042 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92426531]
[2024-09-13 06:24:29,042 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 06:24:29,043 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 06:24:29,068 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-13 06:24:29,071 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346342490]
[2024-09-13 06:24:29,071 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 06:24:29,071 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 06:24:29,071 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-13 06:24:29,073 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-13 06:24:29,076 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-09-13 06:24:29,129 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 06:24:29,132 INFO  L262         TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-09-13 06:24:29,138 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-13 06:24:29,222 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 06:24:29,224 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-13 06:24:29,225 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 06:24:29,225 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92426531]
[2024-09-13 06:24:29,225 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-13 06:24:29,226 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346342490]
[2024-09-13 06:24:29,226 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [346342490] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 06:24:29,226 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 06:24:29,226 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-13 06:24:29,227 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623281586]
[2024-09-13 06:24:29,227 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 06:24:29,229 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-09-13 06:24:29,230 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 06:24:29,231 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-09-13 06:24:29,231 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-09-13 06:24:29,232 INFO  L87              Difference]: Start difference. First operand 29 states and 35 transitions. Second operand  has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 06:24:29,332 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 06:24:29,333 INFO  L93              Difference]: Finished difference Result 40 states and 53 transitions.
[2024-09-13 06:24:29,333 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-09-13 06:24:29,334 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3
[2024-09-13 06:24:29,334 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 06:24:29,334 INFO  L225             Difference]: With dead ends: 40
[2024-09-13 06:24:29,335 INFO  L226             Difference]: Without dead ends: 36
[2024-09-13 06:24:29,335 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-09-13 06:24:29,336 INFO  L434           NwaCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-13 06:24:29,338 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 43 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-13 06:24:29,339 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2024-09-13 06:24:29,347 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2024-09-13 06:24:29,347 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36 states, 20 states have (on average 1.35) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-09-13 06:24:29,351 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 49 transitions.
[2024-09-13 06:24:29,351 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 49 transitions. Word has length 3
[2024-09-13 06:24:29,351 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 06:24:29,352 INFO  L474      AbstractCegarLoop]: Abstraction has 36 states and 49 transitions.
[2024-09-13 06:24:29,352 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 06:24:29,353 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 49 transitions.
[2024-09-13 06:24:29,354 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2024-09-13 06:24:29,354 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 06:24:29,354 INFO  L216           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 06:24:29,372 INFO  L552       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-09-13 06:24:29,559 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 06:24:29,560 INFO  L399      AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] ===
[2024-09-13 06:24:29,561 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 06:24:29,561 INFO  L85        PathProgramCache]: Analyzing trace with hash -406609573, now seen corresponding path program 1 times
[2024-09-13 06:24:29,561 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 06:24:29,561 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291983148]
[2024-09-13 06:24:29,562 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 06:24:29,562 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 06:24:29,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 06:24:29,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 06:24:29,665 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 06:24:29,665 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291983148]
[2024-09-13 06:24:29,665 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291983148] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 06:24:29,666 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 06:24:29,666 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-13 06:24:29,666 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479749661]
[2024-09-13 06:24:29,666 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 06:24:29,667 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-09-13 06:24:29,667 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 06:24:29,667 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-09-13 06:24:29,668 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-13 06:24:29,668 INFO  L87              Difference]: Start difference. First operand 36 states and 49 transitions. Second operand  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 06:24:29,717 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 06:24:29,718 INFO  L93              Difference]: Finished difference Result 35 states and 48 transitions.
[2024-09-13 06:24:29,719 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-09-13 06:24:29,719 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2024-09-13 06:24:29,719 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 06:24:29,720 INFO  L225             Difference]: With dead ends: 35
[2024-09-13 06:24:29,720 INFO  L226             Difference]: Without dead ends: 35
[2024-09-13 06:24:29,721 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-13 06:24:29,723 INFO  L434           NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 06:24:29,724 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 37 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 06:24:29,724 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2024-09-13 06:24:29,729 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2024-09-13 06:24:29,731 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 35 states, 20 states have (on average 1.3) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2024-09-13 06:24:29,733 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions.
[2024-09-13 06:24:29,733 INFO  L78                 Accepts]: Start accepts. Automaton has 35 states and 48 transitions. Word has length 9
[2024-09-13 06:24:29,734 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 06:24:29,734 INFO  L474      AbstractCegarLoop]: Abstraction has 35 states and 48 transitions.
[2024-09-13 06:24:29,734 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 06:24:29,734 INFO  L276                IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions.
[2024-09-13 06:24:29,734 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2024-09-13 06:24:29,735 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 06:24:29,735 INFO  L216           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 06:24:29,735 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-09-13 06:24:29,735 INFO  L399      AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] ===
[2024-09-13 06:24:29,736 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 06:24:29,736 INFO  L85        PathProgramCache]: Analyzing trace with hash -406609734, now seen corresponding path program 1 times
[2024-09-13 06:24:29,736 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 06:24:29,736 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884630204]
[2024-09-13 06:24:29,737 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 06:24:29,737 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 06:24:29,755 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 06:24:29,818 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-09-13 06:24:29,819 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 06:24:29,819 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884630204]
[2024-09-13 06:24:29,819 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884630204] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-13 06:24:29,819 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-13 06:24:29,819 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-09-13 06:24:29,820 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121219564]
[2024-09-13 06:24:29,820 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 06:24:29,820 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-09-13 06:24:29,820 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 06:24:29,821 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-09-13 06:24:29,823 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-13 06:24:29,823 INFO  L87              Difference]: Start difference. First operand 35 states and 48 transitions. Second operand  has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 06:24:29,834 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 06:24:29,834 INFO  L93              Difference]: Finished difference Result 33 states and 46 transitions.
[2024-09-13 06:24:29,835 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-09-13 06:24:29,835 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2024-09-13 06:24:29,835 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 06:24:29,836 INFO  L225             Difference]: With dead ends: 33
[2024-09-13 06:24:29,836 INFO  L226             Difference]: Without dead ends: 30
[2024-09-13 06:24:29,836 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-09-13 06:24:29,837 INFO  L434           NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 06:24:29,838 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 06:24:29,839 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2024-09-13 06:24:29,843 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2024-09-13 06:24:29,844 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 30 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-09-13 06:24:29,845 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions.
[2024-09-13 06:24:29,846 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 9
[2024-09-13 06:24:29,846 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 06:24:29,846 INFO  L474      AbstractCegarLoop]: Abstraction has 30 states and 38 transitions.
[2024-09-13 06:24:29,847 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 06:24:29,847 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions.
[2024-09-13 06:24:29,847 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-09-13 06:24:29,848 INFO  L208           NwaCegarLoop]: Found error trace
[2024-09-13 06:24:29,848 INFO  L216           NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-13 06:24:29,848 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-09-13 06:24:29,849 INFO  L399      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] ===
[2024-09-13 06:24:29,850 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2024-09-13 06:24:29,850 INFO  L85        PathProgramCache]: Analyzing trace with hash -2059095571, now seen corresponding path program 1 times
[2024-09-13 06:24:29,851 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-09-13 06:24:29,851 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250349243]
[2024-09-13 06:24:29,851 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 06:24:29,852 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-09-13 06:24:29,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2024-09-13 06:24:29,897 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977024728]
[2024-09-13 06:24:29,898 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-13 06:24:29,898 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 06:24:29,898 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-13 06:24:29,901 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-09-13 06:24:29,903 INFO  L327       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-09-13 06:24:29,957 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-13 06:24:29,959 INFO  L262         TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-09-13 06:24:29,962 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2024-09-13 06:24:30,148 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-09-13 06:24:30,149 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2024-09-13 06:24:30,337 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-09-13 06:24:30,338 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-09-13 06:24:30,338 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250349243]
[2024-09-13 06:24:30,338 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-09-13 06:24:30,338 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977024728]
[2024-09-13 06:24:30,338 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977024728] provided 1 perfect and 1 imperfect interpolant sequences
[2024-09-13 06:24:30,338 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-09-13 06:24:30,338 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6
[2024-09-13 06:24:30,339 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553155913]
[2024-09-13 06:24:30,339 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-13 06:24:30,339 INFO  L551      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-09-13 06:24:30,340 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-09-13 06:24:30,341 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-09-13 06:24:30,342 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2024-09-13 06:24:30,342 INFO  L87              Difference]: Start difference. First operand 30 states and 38 transitions. Second operand  has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-09-13 06:24:30,371 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-13 06:24:30,371 INFO  L93              Difference]: Finished difference Result 23 states and 31 transitions.
[2024-09-13 06:24:30,372 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-09-13 06:24:30,372 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22
[2024-09-13 06:24:30,372 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-13 06:24:30,373 INFO  L225             Difference]: With dead ends: 23
[2024-09-13 06:24:30,373 INFO  L226             Difference]: Without dead ends: 0
[2024-09-13 06:24:30,373 INFO  L433           NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2024-09-13 06:24:30,374 INFO  L434           NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-09-13 06:24:30,375 INFO  L435           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-09-13 06:24:30,375 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2024-09-13 06:24:30,375 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2024-09-13 06:24:30,376 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-09-13 06:24:30,376 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2024-09-13 06:24:30,376 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22
[2024-09-13 06:24:30,376 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-09-13 06:24:30,376 INFO  L474      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2024-09-13 06:24:30,376 INFO  L475      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)
[2024-09-13 06:24:30,376 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2024-09-13 06:24:30,376 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2024-09-13 06:24:30,382 INFO  L785   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONPRE_CONDITION (10 of 11 remaining)
[2024-09-13 06:24:30,382 INFO  L785   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 11 remaining)
[2024-09-13 06:24:30,383 INFO  L785   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (8 of 11 remaining)
[2024-09-13 06:24:30,383 INFO  L785   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (7 of 11 remaining)
[2024-09-13 06:24:30,383 INFO  L785   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION (6 of 11 remaining)
[2024-09-13 06:24:30,383 INFO  L785   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (5 of 11 remaining)
[2024-09-13 06:24:30,383 INFO  L785   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (4 of 11 remaining)
[2024-09-13 06:24:30,384 INFO  L785   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (3 of 11 remaining)
[2024-09-13 06:24:30,384 INFO  L785   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONPOST_CONDITION (2 of 11 remaining)
[2024-09-13 06:24:30,384 INFO  L785   garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining)
[2024-09-13 06:24:30,384 INFO  L785   garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 11 remaining)
[2024-09-13 06:24:30,402 INFO  L552       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-09-13 06:24:30,585 WARN  L456      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-09-13 06:24:30,588 INFO  L408         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1]
[2024-09-13 06:24:30,589 INFO  L165   ceAbstractionStarter]: Computing trace abstraction results
[2024-09-13 06:24:30,591 INFO  L469   ceAbstractionStarter]: Automizer considered 1 witness invariants
[2024-09-13 06:24:30,591 INFO  L470   ceAbstractionStarter]: WitnessConsidered=1
[2024-09-13 06:24:30,592 INFO  L201        PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 06:24:30 BoogieIcfgContainer
[2024-09-13 06:24:30,592 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-09-13 06:24:30,593 INFO  L158              Benchmark]: Toolchain (without parser) took 2769.79ms. Allocated memory was 148.9MB in the beginning and 186.6MB in the end (delta: 37.7MB). Free memory was 114.0MB in the beginning and 103.4MB in the end (delta: 10.6MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB.
[2024-09-13 06:24:30,593 INFO  L158              Benchmark]: CDTParser took 0.19ms. Allocated memory is still 148.9MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-09-13 06:24:30,593 INFO  L158              Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 148.9MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-09-13 06:24:30,593 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 322.56ms. Allocated memory is still 148.9MB. Free memory was 114.0MB in the beginning and 100.3MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2024-09-13 06:24:30,593 INFO  L158              Benchmark]: Boogie Procedure Inliner took 33.10ms. Allocated memory is still 148.9MB. Free memory was 100.3MB in the beginning and 99.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-09-13 06:24:30,594 INFO  L158              Benchmark]: Boogie Preprocessor took 49.73ms. Allocated memory is still 148.9MB. Free memory was 99.0MB in the beginning and 97.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2024-09-13 06:24:30,594 INFO  L158              Benchmark]: RCFGBuilder took 390.73ms. Allocated memory is still 148.9MB. Free memory was 97.1MB in the beginning and 83.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2024-09-13 06:24:30,594 INFO  L158              Benchmark]: TraceAbstraction took 1963.90ms. Allocated memory was 148.9MB in the beginning and 186.6MB in the end (delta: 37.7MB). Free memory was 82.6MB in the beginning and 103.4MB in the end (delta: -20.8MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB.
[2024-09-13 06:24:30,596 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.19ms. Allocated memory is still 148.9MB. Free memory is still 116.8MB. There was no memory consumed. Max. memory is 16.1GB.
 * Witness Parser took 0.17ms. Allocated memory is still 148.9MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB.
 * CACSL2BoogieTranslator took 322.56ms. Allocated memory is still 148.9MB. Free memory was 114.0MB in the beginning and 100.3MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
 * Boogie Procedure Inliner took 33.10ms. Allocated memory is still 148.9MB. Free memory was 100.3MB in the beginning and 99.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
 * Boogie Preprocessor took 49.73ms. Allocated memory is still 148.9MB. Free memory was 99.0MB in the beginning and 97.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
 * RCFGBuilder took 390.73ms. Allocated memory is still 148.9MB. Free memory was 97.1MB in the beginning and 83.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
 * TraceAbstraction took 1963.90ms. Allocated memory was 148.9MB in the beginning and 186.6MB in the end (delta: 37.7MB). Free memory was 82.6MB in the beginning and 103.4MB in the end (delta: -20.8MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Line: 21]: procedure precondition always holds
    For all program executions holds that procedure precondition always holds at this location
  - PositiveResult [Line: 30]: invariant of correctness witness holds
    For all program executions holds that invariant of correctness witness holds at this location
  - PositiveResult [Line: 11]: procedure precondition always holds
    For all program executions holds that procedure precondition always holds at this location
  - PositiveResult [Line: 11]: procedure precondition always holds
    For all program executions holds that procedure precondition always holds at this location
  - PositiveResult [Line: 11]: procedure precondition always holds
    For all program executions holds that procedure precondition always holds at this location
  - PositiveResult [Line: 11]: procedure precondition always holds
    For all program executions holds that procedure precondition always holds at this location
  - PositiveResult [Line: 11]: procedure precondition always holds
    For all program executions holds that procedure precondition always holds at this location
  - PositiveResult [Line: 11]: procedure precondition always holds
    For all program executions holds that procedure precondition always holds at this location
  - PositiveResult [Line: 21]: procedure postcondition always holds
    For all program executions holds that procedure postcondition always holds at this location
  - PositiveResult [Line: 14]: a call to reach_error is unreachable
    For all program executions holds that a call to reach_error is unreachable at this location
  - PositiveResult [Line: 11]: procedure postcondition always holds
    For all program executions holds that procedure postcondition always holds at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 2 procedures, 31 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 48 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 224 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 100 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 124 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 336 SizeOfPredicates, 2 NumberOfNonLiveVariables, 120 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 25/26 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    11 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2024-09-13 06:24:30,618 INFO  L540       MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---

Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE