./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop2-func-interl.c --full-output --architecture 64bit


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


Checking for ERROR reachability
Using default analysis
Version 4f9af400
extending candidate: java
['java']
extending candidate: /usr/bin/java
['java', '/usr/bin/java']
extending candidate: /opt/oracle-jdk-bin-*/bin/java
['java', '/usr/bin/java']
extending candidate: /opt/openjdk-*/bin/java
['java', '/usr/bin/java']
extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java
['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java']
['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop2-func-interl.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '64bit', '--witnessprinter.graph.data.programhash', 'd13852d5bc3a3892eb1c4eb80ad6cdb0363b1511a657b3cf838b40b5fe2186ee']
Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop2-func-interl.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d13852d5bc3a3892eb1c4eb80ad6cdb0363b1511a657b3cf838b40b5fe2186ee
--- Real Ultimate output ---
This is Ultimate 0.3.0-?-4f9af40
[2024-11-07 03:15:07,384 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-07 03:15:07,457 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf
[2024-11-07 03:15:07,461 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-07 03:15:07,462 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-07 03:15:07,476 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-07 03:15:07,477 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-07 03:15:07,477 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-07 03:15:07,477 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-07 03:15:07,477 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-07 03:15:07,477 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-07 03:15:07,478 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-07 03:15:07,479 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-07 03:15:07,479 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-07 03:15:07,479 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-07 03:15:07,479 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-07 03:15:07,480 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-07 03:15:07,480 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-07 03:15:07,480 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-07 03:15:07,480 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-07 03:15:07,480 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-07 03:15:07,480 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-07 03:15:07,480 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-07 03:15:07,480 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-07 03:15:07,480 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-07 03:15:07,480 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-07 03:15:07,480 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13852d5bc3a3892eb1c4eb80ad6cdb0363b1511a657b3cf838b40b5fe2186ee
[2024-11-07 03:15:07,715 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-07 03:15:07,735 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-07 03:15:07,741 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-07 03:15:07,742 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-07 03:15:07,742 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-07 03:15:07,743 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop2-func-interl.c
[2024-11-07 03:15:09,115 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-07 03:15:09,522 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-07 03:15:09,523 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop2-func-interl.c
[2024-11-07 03:15:09,555 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/02c491696/22660b5777cf4216a2f0c7b8ba4ee0b3/FLAG5b76adadc
[2024-11-07 03:15:09,573 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/02c491696/22660b5777cf4216a2f0c7b8ba4ee0b3
[2024-11-07 03:15:09,575 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-07 03:15:09,576 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-07 03:15:09,579 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-07 03:15:09,579 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-07 03:15:09,582 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-07 03:15:09,583 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:15:09" (1/1) ...
[2024-11-07 03:15:09,588 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686e6368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:09, skipping insertion in model container
[2024-11-07 03:15:09,588 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:15:09" (1/1) ...
[2024-11-07 03:15:09,698 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-07 03:15:09,893 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop2-func-interl.c[1174,1187]
[2024-11-07 03:15:10,434 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-07 03:15:10,442 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-07 03:15:10,449 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.needham.2.prop2-func-interl.c[1174,1187]
[2024-11-07 03:15:10,824 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-07 03:15:10,848 INFO  L204         MainTranslator]: Completed translation
[2024-11-07 03:15:10,855 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10 WrapperNode
[2024-11-07 03:15:10,856 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-07 03:15:10,857 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-07 03:15:10,857 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-07 03:15:10,857 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-07 03:15:10,866 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10" (1/1) ...
[2024-11-07 03:15:10,984 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10" (1/1) ...
[2024-11-07 03:15:12,400 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18224
[2024-11-07 03:15:12,400 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-07 03:15:12,401 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-07 03:15:12,401 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-07 03:15:12,401 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-07 03:15:12,408 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10" (1/1) ...
[2024-11-07 03:15:12,408 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10" (1/1) ...
[2024-11-07 03:15:12,871 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10" (1/1) ...
[2024-11-07 03:15:13,092 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-07 03:15:13,093 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10" (1/1) ...
[2024-11-07 03:15:13,094 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10" (1/1) ...
[2024-11-07 03:15:13,536 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10" (1/1) ...
[2024-11-07 03:15:13,607 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10" (1/1) ...
[2024-11-07 03:15:13,705 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10" (1/1) ...
[2024-11-07 03:15:13,770 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10" (1/1) ...
[2024-11-07 03:15:14,143 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-07 03:15:14,144 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-07 03:15:14,145 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-07 03:15:14,145 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-07 03:15:14,146 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10" (1/1) ...
[2024-11-07 03:15:14,150 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-07 03:15:14,166 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-07 03:15:14,179 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-07 03:15:14,182 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-07 03:15:14,199 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-07 03:15:14,200 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-07 03:15:14,200 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-07 03:15:14,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-07 03:15:14,955 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-07 03:15:14,957 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-07 03:15:46,713 INFO  L?                        ?]: Removed 9827 outVars from TransFormulas that were not future-live.
[2024-11-07 03:15:46,713 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-07 03:15:46,793 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-07 03:15:46,793 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-07 03:15:46,794 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:15:46 BoogieIcfgContainer
[2024-11-07 03:15:46,794 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-07 03:15:46,796 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-07 03:15:46,796 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-07 03:15:46,801 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-07 03:15:46,802 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:15:09" (1/3) ...
[2024-11-07 03:15:46,802 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a9f38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:15:46, skipping insertion in model container
[2024-11-07 03:15:46,802 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:15:10" (2/3) ...
[2024-11-07 03:15:46,802 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a9f38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:15:46, skipping insertion in model container
[2024-11-07 03:15:46,802 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:15:46" (3/3) ...
[2024-11-07 03:15:46,803 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.2.prop2-func-interl.c
[2024-11-07 03:15:46,814 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-07 03:15:46,815 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-07 03:15:46,943 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-07 03:15:46,952 INFO  L333      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=LoopHeads, 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;@21dbaa53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-07 03:15:46,953 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-07 03:15:46,973 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 6631 states, 6629 states have (on average 1.5036958817317845) internal successors, (9968), 6630 states have internal predecessors, (9968), 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)
[2024-11-07 03:15:46,992 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 274
[2024-11-07 03:15:46,993 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-07 03:15:46,994 INFO  L215           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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 03:15:46,994 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-07 03:15:46,998 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 03:15:46,999 INFO  L85        PathProgramCache]: Analyzing trace with hash 387352572, now seen corresponding path program 1 times
[2024-11-07 03:15:47,004 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 03:15:47,004 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328030193]
[2024-11-07 03:15:47,005 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 03:15:47,005 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 03:15:47,319 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 03:15:48,430 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 03:15:48,430 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 03:15:48,430 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328030193]
[2024-11-07 03:15:48,431 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328030193] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 03:15:48,433 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 03:15:48,433 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-07 03:15:48,434 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805648562]
[2024-11-07 03:15:48,434 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 03:15:48,439 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-07 03:15:48,439 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 03:15:48,456 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-07 03:15:48,456 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-07 03:15:48,469 INFO  L87              Difference]: Start difference. First operand  has 6631 states, 6629 states have (on average 1.5036958817317845) internal successors, (9968), 6630 states have internal predecessors, (9968), 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) Second operand  has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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)
[2024-11-07 03:15:53,922 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-07 03:15:53,923 INFO  L93              Difference]: Finished difference Result 19463 states and 29266 transitions.
[2024-11-07 03:15:53,924 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-07 03:15:53,925 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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 273
[2024-11-07 03:15:53,926 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-07 03:15:53,977 INFO  L225             Difference]: With dead ends: 19463
[2024-11-07 03:15:53,977 INFO  L226             Difference]: Without dead ends: 13038
[2024-11-07 03:15:53,994 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-07 03:15:53,996 INFO  L432           NwaCegarLoop]: 7898 mSDtfsCounter, 9681 mSDsluCounter, 23517 mSDsCounter, 0 mSdLazyCounter, 8134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9681 SdHoareTripleChecker+Valid, 31415 SdHoareTripleChecker+Invalid, 8135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2024-11-07 03:15:53,997 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [9681 Valid, 31415 Invalid, 8135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 8134 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2024-11-07 03:15:54,034 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13038 states.
[2024-11-07 03:15:54,206 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13038 to 6951.
[2024-11-07 03:15:54,219 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6951 states, 6950 states have (on average 1.5031654676258992) internal successors, (10447), 6950 states have internal predecessors, (10447), 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)
[2024-11-07 03:15:54,238 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 10447 transitions.
[2024-11-07 03:15:54,240 INFO  L78                 Accepts]: Start accepts. Automaton has 6951 states and 10447 transitions. Word has length 273
[2024-11-07 03:15:54,241 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-07 03:15:54,241 INFO  L471      AbstractCegarLoop]: Abstraction has 6951 states and 10447 transitions.
[2024-11-07 03:15:54,241 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 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)
[2024-11-07 03:15:54,241 INFO  L276                IsEmpty]: Start isEmpty. Operand 6951 states and 10447 transitions.
[2024-11-07 03:15:54,244 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 276
[2024-11-07 03:15:54,245 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-07 03:15:54,245 INFO  L215           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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 03:15:54,245 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-07 03:15:54,245 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-07 03:15:54,246 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 03:15:54,246 INFO  L85        PathProgramCache]: Analyzing trace with hash 156752185, now seen corresponding path program 1 times
[2024-11-07 03:15:54,246 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 03:15:54,246 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403594564]
[2024-11-07 03:15:54,246 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 03:15:54,246 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 03:15:54,353 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 03:15:54,935 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 03:15:54,937 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 03:15:54,937 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403594564]
[2024-11-07 03:15:54,937 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403594564] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 03:15:54,937 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 03:15:54,937 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-07 03:15:54,937 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139348057]
[2024-11-07 03:15:54,937 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 03:15:54,938 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-07 03:15:54,938 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 03:15:54,939 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-07 03:15:54,939 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-07 03:15:54,939 INFO  L87              Difference]: Start difference. First operand 6951 states and 10447 transitions. Second operand  has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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)
[2024-11-07 03:15:55,029 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-07 03:15:55,030 INFO  L93              Difference]: Finished difference Result 6955 states and 10451 transitions.
[2024-11-07 03:15:55,031 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-07 03:15:55,031 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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 275
[2024-11-07 03:15:55,033 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-07 03:15:55,051 INFO  L225             Difference]: With dead ends: 6955
[2024-11-07 03:15:55,051 INFO  L226             Difference]: Without dead ends: 6953
[2024-11-07 03:15:55,055 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-07 03:15:55,056 INFO  L432           NwaCegarLoop]: 9962 mSDtfsCounter, 0 mSDsluCounter, 19918 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29880 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-07 03:15:55,056 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29880 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-07 03:15:55,066 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6953 states.
[2024-11-07 03:15:55,139 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6953 to 6953.
[2024-11-07 03:15:55,153 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6953 states, 6952 states have (on average 1.5030207134637514) internal successors, (10449), 6952 states have internal predecessors, (10449), 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)
[2024-11-07 03:15:55,169 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6953 states to 6953 states and 10449 transitions.
[2024-11-07 03:15:55,170 INFO  L78                 Accepts]: Start accepts. Automaton has 6953 states and 10449 transitions. Word has length 275
[2024-11-07 03:15:55,171 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-07 03:15:55,171 INFO  L471      AbstractCegarLoop]: Abstraction has 6953 states and 10449 transitions.
[2024-11-07 03:15:55,172 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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)
[2024-11-07 03:15:55,172 INFO  L276                IsEmpty]: Start isEmpty. Operand 6953 states and 10449 transitions.
[2024-11-07 03:15:55,174 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 277
[2024-11-07 03:15:55,177 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-07 03:15:55,177 INFO  L215           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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 03:15:55,177 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-07 03:15:55,178 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-07 03:15:55,178 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 03:15:55,178 INFO  L85        PathProgramCache]: Analyzing trace with hash 566047334, now seen corresponding path program 1 times
[2024-11-07 03:15:55,178 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 03:15:55,178 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605507309]
[2024-11-07 03:15:55,178 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 03:15:55,179 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 03:15:55,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 03:15:55,598 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 03:15:55,598 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 03:15:55,598 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605507309]
[2024-11-07 03:15:55,599 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605507309] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 03:15:55,599 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 03:15:55,599 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-07 03:15:55,599 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036918172]
[2024-11-07 03:15:55,599 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 03:15:55,600 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-07 03:15:55,600 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 03:15:55,601 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-07 03:15:55,601 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-07 03:15:55,601 INFO  L87              Difference]: Start difference. First operand 6953 states and 10449 transitions. Second operand  has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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)
[2024-11-07 03:15:55,714 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-07 03:15:55,715 INFO  L93              Difference]: Finished difference Result 13379 states and 20110 transitions.
[2024-11-07 03:15:55,715 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-07 03:15:55,715 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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 276
[2024-11-07 03:15:55,716 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-07 03:15:55,741 INFO  L225             Difference]: With dead ends: 13379
[2024-11-07 03:15:55,741 INFO  L226             Difference]: Without dead ends: 6955
[2024-11-07 03:15:55,764 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-07 03:15:55,765 INFO  L432           NwaCegarLoop]: 9962 mSDtfsCounter, 0 mSDsluCounter, 19914 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29876 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-07 03:15:55,765 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29876 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-07 03:15:55,774 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6955 states.
[2024-11-07 03:15:55,844 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6955 to 6955.
[2024-11-07 03:15:55,852 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6955 states, 6954 states have (on average 1.50287604256543) internal successors, (10451), 6954 states have internal predecessors, (10451), 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)
[2024-11-07 03:15:55,864 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6955 states to 6955 states and 10451 transitions.
[2024-11-07 03:15:55,865 INFO  L78                 Accepts]: Start accepts. Automaton has 6955 states and 10451 transitions. Word has length 276
[2024-11-07 03:15:55,865 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-07 03:15:55,865 INFO  L471      AbstractCegarLoop]: Abstraction has 6955 states and 10451 transitions.
[2024-11-07 03:15:55,865 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 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)
[2024-11-07 03:15:55,866 INFO  L276                IsEmpty]: Start isEmpty. Operand 6955 states and 10451 transitions.
[2024-11-07 03:15:55,867 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 278
[2024-11-07 03:15:55,867 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-07 03:15:55,868 INFO  L215           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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-07 03:15:55,868 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-07 03:15:55,868 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-07 03:15:55,868 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 03:15:55,868 INFO  L85        PathProgramCache]: Analyzing trace with hash -730366030, now seen corresponding path program 1 times
[2024-11-07 03:15:55,868 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 03:15:55,868 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237311436]
[2024-11-07 03:15:55,869 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 03:15:55,869 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 03:15:55,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 03:15:56,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 03:15:56,749 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 03:15:56,749 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237311436]
[2024-11-07 03:15:56,749 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237311436] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 03:15:56,749 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 03:15:56,749 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2024-11-07 03:15:56,749 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210263995]
[2024-11-07 03:15:56,749 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 03:15:56,750 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-07 03:15:56,750 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 03:15:56,750 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-07 03:15:56,750 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2024-11-07 03:15:56,750 INFO  L87              Difference]: Start difference. First operand 6955 states and 10451 transitions. Second operand  has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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)
[2024-11-07 03:15:56,986 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-07 03:15:56,986 INFO  L93              Difference]: Finished difference Result 13975 states and 21014 transitions.
[2024-11-07 03:15:56,987 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2024-11-07 03:15:56,987 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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 277
[2024-11-07 03:15:56,988 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-07 03:15:57,002 INFO  L225             Difference]: With dead ends: 13975
[2024-11-07 03:15:57,003 INFO  L226             Difference]: Without dead ends: 7549
[2024-11-07 03:15:57,011 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72
[2024-11-07 03:15:57,012 INFO  L432           NwaCegarLoop]: 9958 mSDtfsCounter, 1430 mSDsluCounter, 49447 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 59405 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-07 03:15:57,013 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 59405 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-07 03:15:57,023 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7549 states.
[2024-11-07 03:15:57,107 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7549 to 6958.
[2024-11-07 03:15:57,116 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6958 states, 6957 states have (on average 1.5026591921805377) internal successors, (10454), 6957 states have internal predecessors, (10454), 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)
[2024-11-07 03:15:57,126 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 10454 transitions.
[2024-11-07 03:15:57,126 INFO  L78                 Accepts]: Start accepts. Automaton has 6958 states and 10454 transitions. Word has length 277
[2024-11-07 03:15:57,128 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-07 03:15:57,128 INFO  L471      AbstractCegarLoop]: Abstraction has 6958 states and 10454 transitions.
[2024-11-07 03:15:57,128 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 39.57142857142857) internal successors, (277), 7 states have internal predecessors, (277), 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)
[2024-11-07 03:15:57,128 INFO  L276                IsEmpty]: Start isEmpty. Operand 6958 states and 10454 transitions.
[2024-11-07 03:15:57,430 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3391
[2024-11-07 03:15:57,430 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-07 03:15:57,432 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-07 03:15:57,433 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-07 03:15:57,433 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-07 03:15:57,434 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 03:15:57,436 INFO  L85        PathProgramCache]: Analyzing trace with hash -502300904, now seen corresponding path program 1 times
[2024-11-07 03:15:57,436 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 03:15:57,436 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473765859]
[2024-11-07 03:15:57,437 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 03:15:57,437 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 03:16:00,550 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 03:16:06,469 INFO  L134       CoverageAnalysis]: Checked inductivity of 168 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 03:16:06,469 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 03:16:06,469 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473765859]
[2024-11-07 03:16:06,470 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473765859] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 03:16:06,470 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 03:16:06,470 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-07 03:16:06,470 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916733512]
[2024-11-07 03:16:06,470 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 03:16:06,474 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-07 03:16:06,474 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 03:16:06,478 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-07 03:16:06,478 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-07 03:16:06,480 INFO  L87              Difference]: Start difference. First operand 6958 states and 10454 transitions. Second operand  has 3 states, 3 states have (on average 1130.0) internal successors, (3390), 3 states have internal predecessors, (3390), 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)
[2024-11-07 03:16:06,735 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-07 03:16:06,735 INFO  L93              Difference]: Finished difference Result 13385 states and 20116 transitions.
[2024-11-07 03:16:06,739 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-07 03:16:06,740 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1130.0) internal successors, (3390), 3 states have internal predecessors, (3390), 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 3390
[2024-11-07 03:16:06,742 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-07 03:16:06,752 INFO  L225             Difference]: With dead ends: 13385
[2024-11-07 03:16:06,752 INFO  L226             Difference]: Without dead ends: 6959
[2024-11-07 03:16:06,757 INFO  L431           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
[2024-11-07 03:16:06,758 INFO  L432           NwaCegarLoop]: 9963 mSDtfsCounter, 0 mSDsluCounter, 9957 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19920 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-07 03:16:06,759 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19920 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-07 03:16:06,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6959 states.
[2024-11-07 03:16:06,846 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6959 to 6959.
[2024-11-07 03:16:06,855 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6959 states, 6958 states have (on average 1.5025869502730669) internal successors, (10455), 6958 states have internal predecessors, (10455), 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)
[2024-11-07 03:16:06,864 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6959 states to 6959 states and 10455 transitions.
[2024-11-07 03:16:06,864 INFO  L78                 Accepts]: Start accepts. Automaton has 6959 states and 10455 transitions. Word has length 3390
[2024-11-07 03:16:06,865 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-07 03:16:06,865 INFO  L471      AbstractCegarLoop]: Abstraction has 6959 states and 10455 transitions.
[2024-11-07 03:16:06,866 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1130.0) internal successors, (3390), 3 states have internal predecessors, (3390), 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)
[2024-11-07 03:16:06,867 INFO  L276                IsEmpty]: Start isEmpty. Operand 6959 states and 10455 transitions.
[2024-11-07 03:16:06,918 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3391
[2024-11-07 03:16:06,919 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-07 03:16:06,920 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-07 03:16:06,921 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-07 03:16:06,921 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-07 03:16:06,921 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 03:16:06,922 INFO  L85        PathProgramCache]: Analyzing trace with hash -1792615991, now seen corresponding path program 1 times
[2024-11-07 03:16:06,923 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 03:16:06,923 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355378862]
[2024-11-07 03:16:06,923 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 03:16:06,923 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 03:16:10,002 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 03:16:14,034 INFO  L134       CoverageAnalysis]: Checked inductivity of 168 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-07 03:16:14,035 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 03:16:14,035 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355378862]
[2024-11-07 03:16:14,035 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355378862] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 03:16:14,035 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 03:16:14,035 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-07 03:16:14,036 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117204447]
[2024-11-07 03:16:14,036 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 03:16:14,038 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-07 03:16:14,038 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 03:16:14,040 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-07 03:16:14,040 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-07 03:16:14,041 INFO  L87              Difference]: Start difference. First operand 6959 states and 10455 transitions. Second operand  has 3 states, 3 states have (on average 1130.0) internal successors, (3390), 3 states have internal predecessors, (3390), 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)
[2024-11-07 03:16:14,261 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-07 03:16:14,261 INFO  L93              Difference]: Finished difference Result 13387 states and 20118 transitions.
[2024-11-07 03:16:14,262 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-07 03:16:14,263 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1130.0) internal successors, (3390), 3 states have internal predecessors, (3390), 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 3390
[2024-11-07 03:16:14,264 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-07 03:16:14,274 INFO  L225             Difference]: With dead ends: 13387
[2024-11-07 03:16:14,274 INFO  L226             Difference]: Without dead ends: 6960
[2024-11-07 03:16:14,281 INFO  L431           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
[2024-11-07 03:16:14,283 INFO  L432           NwaCegarLoop]: 9963 mSDtfsCounter, 0 mSDsluCounter, 9957 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19920 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-07 03:16:14,284 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19920 Invalid, 7 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-07 03:16:14,292 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6960 states.
[2024-11-07 03:16:14,343 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6960 to 6960.
[2024-11-07 03:16:14,352 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6960 states, 6959 states have (on average 1.5025147291277483) internal successors, (10456), 6959 states have internal predecessors, (10456), 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)
[2024-11-07 03:16:14,359 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6960 states to 6960 states and 10456 transitions.
[2024-11-07 03:16:14,359 INFO  L78                 Accepts]: Start accepts. Automaton has 6960 states and 10456 transitions. Word has length 3390
[2024-11-07 03:16:14,361 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-07 03:16:14,362 INFO  L471      AbstractCegarLoop]: Abstraction has 6960 states and 10456 transitions.
[2024-11-07 03:16:14,365 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1130.0) internal successors, (3390), 3 states have internal predecessors, (3390), 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)
[2024-11-07 03:16:14,366 INFO  L276                IsEmpty]: Start isEmpty. Operand 6960 states and 10456 transitions.
[2024-11-07 03:16:14,416 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3391
[2024-11-07 03:16:14,416 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-07 03:16:14,417 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-07 03:16:14,418 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-07 03:16:14,418 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-07 03:16:14,418 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 03:16:14,419 INFO  L85        PathProgramCache]: Analyzing trace with hash 1462963832, now seen corresponding path program 1 times
[2024-11-07 03:16:14,419 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 03:16:14,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458752158]
[2024-11-07 03:16:14,420 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 03:16:14,420 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 03:16:16,884 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-07 03:16:21,608 INFO  L134       CoverageAnalysis]: Checked inductivity of 168 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2024-11-07 03:16:21,608 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-07 03:16:21,608 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458752158]
[2024-11-07 03:16:21,608 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458752158] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-07 03:16:21,608 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-07 03:16:21,609 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-07 03:16:21,609 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635370254]
[2024-11-07 03:16:21,609 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-07 03:16:21,611 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-07 03:16:21,611 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-07 03:16:21,614 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-07 03:16:21,614 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-07 03:16:21,615 INFO  L87              Difference]: Start difference. First operand 6960 states and 10456 transitions. Second operand  has 4 states, 4 states have (on average 807.25) internal successors, (3229), 4 states have internal predecessors, (3229), 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)
[2024-11-07 03:16:21,712 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-07 03:16:21,712 INFO  L93              Difference]: Finished difference Result 13390 states and 20121 transitions.
[2024-11-07 03:16:21,713 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-07 03:16:21,714 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 807.25) internal successors, (3229), 4 states have internal predecessors, (3229), 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 3390
[2024-11-07 03:16:21,717 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-07 03:16:21,727 INFO  L225             Difference]: With dead ends: 13390
[2024-11-07 03:16:21,727 INFO  L226             Difference]: Without dead ends: 6962
[2024-11-07 03:16:21,734 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-07 03:16:21,735 INFO  L432           NwaCegarLoop]: 9964 mSDtfsCounter, 0 mSDsluCounter, 19909 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29873 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-07 03:16:21,735 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29873 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-07 03:16:21,744 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6962 states.
[2024-11-07 03:16:22,099 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6962 to 6960.
[2024-11-07 03:16:22,110 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6960 states, 6959 states have (on average 1.5025147291277483) internal successors, (10456), 6959 states have internal predecessors, (10456), 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)
[2024-11-07 03:16:22,118 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6960 states to 6960 states and 10456 transitions.
[2024-11-07 03:16:22,118 INFO  L78                 Accepts]: Start accepts. Automaton has 6960 states and 10456 transitions. Word has length 3390
[2024-11-07 03:16:22,122 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-07 03:16:22,122 INFO  L471      AbstractCegarLoop]: Abstraction has 6960 states and 10456 transitions.
[2024-11-07 03:16:22,123 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 807.25) internal successors, (3229), 4 states have internal predecessors, (3229), 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)
[2024-11-07 03:16:22,123 INFO  L276                IsEmpty]: Start isEmpty. Operand 6960 states and 10456 transitions.
[2024-11-07 03:16:22,174 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3392
[2024-11-07 03:16:22,174 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-07 03:16:22,176 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-11-07 03:16:22,176 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-07 03:16:22,176 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-07 03:16:22,177 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-07 03:16:22,177 INFO  L85        PathProgramCache]: Analyzing trace with hash -983872921, now seen corresponding path program 1 times
[2024-11-07 03:16:22,178 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-07 03:16:22,178 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959114899]
[2024-11-07 03:16:22,178 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-07 03:16:22,178 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-07 03:16:24,347 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat