./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_2x3-1.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
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/recursive-simple/sum_2x3-1.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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', '32bit', '--witnessprinter.graph.data.programhash', 'b2c85aee86c4b142223e11d6ae03fc30f95f303d54efdd7315c1aab75b140c6a']
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/recursive-simple/sum_2x3-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash b2c85aee86c4b142223e11d6ae03fc30f95f303d54efdd7315c1aab75b140c6a
--- Real Ultimate output ---
This is Ultimate 0.3.0-?-4f9af40
[2024-11-06 23:50:09,860 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-06 23:50:09,937 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-06 23:50:09,944 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 23:50:09,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 23:50:09,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 23:50:09,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 23:50:09,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 23:50:09,969 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 23:50:09,969 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-06 23:50:09,970 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 23:50:09,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 23:50:09,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 23:50:09,970 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-06 23:50:09,970 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-06 23:50:09,970 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 23:50:09,970 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-06 23:50:09,970 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-06 23:50:09,970 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-06 23:50:09,970 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-06 23:50:09,970 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-06 23:50:09,971 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 23:50:09,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 23:50:09,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 23:50:09,971 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 -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2c85aee86c4b142223e11d6ae03fc30f95f303d54efdd7315c1aab75b140c6a
[2024-11-06 23:50:10,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 23:50:10,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 23:50:10,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 23:50:10,190 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-06 23:50:10,190 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-06 23:50:10,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/sum_2x3-1.c
[2024-11-06 23:50:11,328 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-06 23:50:11,525 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-06 23:50:11,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/sum_2x3-1.c
[2024-11-06 23:50:11,539 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b113d5771/08b5b4f208054517a357e4d9a01a8182/FLAG7f3413adf
[2024-11-06 23:50:11,920 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b113d5771/08b5b4f208054517a357e4d9a01a8182
[2024-11-06 23:50:11,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 23:50:11,927 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-06 23:50:11,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 23:50:11,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 23:50:11,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 23:50:11,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:50:11" (1/1) ...
[2024-11-06 23:50:11,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c28815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:11, skipping insertion in model container
[2024-11-06 23:50:11,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:50:11" (1/1) ...
[2024-11-06 23:50:11,954 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-06 23:50:12,117 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/recursive-simple/sum_2x3-1.c[479,492]
[2024-11-06 23:50:12,119 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-06 23:50:12,129 INFO L200 MainTranslator]: Completed pre-run
[2024-11-06 23:50:12,136 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/recursive-simple/sum_2x3-1.c[479,492]
[2024-11-06 23:50:12,137 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-06 23:50:12,145 INFO L204 MainTranslator]: Completed translation
[2024-11-06 23:50:12,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12 WrapperNode
[2024-11-06 23:50:12,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 23:50:12,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 23:50:12,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 23:50:12,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 23:50:12,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12" (1/1) ...
[2024-11-06 23:50:12,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12" (1/1) ...
[2024-11-06 23:50:12,164 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19
[2024-11-06 23:50:12,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 23:50:12,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 23:50:12,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 23:50:12,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 23:50:12,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12" (1/1) ...
[2024-11-06 23:50:12,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12" (1/1) ...
[2024-11-06 23:50:12,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12" (1/1) ...
[2024-11-06 23:50:12,176 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].
[2024-11-06 23:50:12,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12" (1/1) ...
[2024-11-06 23:50:12,177 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12" (1/1) ...
[2024-11-06 23:50:12,178 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12" (1/1) ...
[2024-11-06 23:50:12,179 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12" (1/1) ...
[2024-11-06 23:50:12,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12" (1/1) ...
[2024-11-06 23:50:12,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12" (1/1) ...
[2024-11-06 23:50:12,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 23:50:12,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 23:50:12,185 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 23:50:12,186 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-06 23:50:12,186 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12" (1/1) ...
[2024-11-06 23:50:12,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 23:50:12,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 23:50:12,213 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)
[2024-11-06 23:50:12,215 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
[2024-11-06 23:50:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 23:50:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 23:50:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 23:50:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure sum
[2024-11-06 23:50:12,232 INFO L138 BoogieDeclarations]: Found implementation of procedure sum
[2024-11-06 23:50:12,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-06 23:50:12,278 INFO L238 CfgBuilder]: Building ICFG
[2024-11-06 23:50:12,279 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 23:50:12,345 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live.
[2024-11-06 23:50:12,345 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-06 23:50:12,353 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 23:50:12,353 INFO L316 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-06 23:50:12,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:50:12 BoogieIcfgContainer
[2024-11-06 23:50:12,353 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 23:50:12,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 23:50:12,356 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 23:50:12,360 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-06 23:50:12,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:50:11" (1/3) ...
[2024-11-06 23:50:12,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d463d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:50:12, skipping insertion in model container
[2024-11-06 23:50:12,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:12" (2/3) ...
[2024-11-06 23:50:12,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d463d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:50:12, skipping insertion in model container
[2024-11-06 23:50:12,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:50:12" (3/3) ...
[2024-11-06 23:50:12,362 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_2x3-1.c
[2024-11-06 23:50:12,374 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 23:50:12,374 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 23:50:12,412 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 23:50:12,426 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;@248feb18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 23:50:12,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 23:50:12,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2024-11-06 23:50:12,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2024-11-06 23:50:12,432 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-06 23:50:12,433 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 23:50:12,433 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 23:50:12,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 23:50:12,435 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times
[2024-11-06 23:50:12,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-06 23:50:12,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47334975]
[2024-11-06 23:50:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 23:50:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-06 23:50:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 23:50:12,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-06 23:50:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 23:50:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-06 23:50:12,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-06 23:50:12,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47334975]
[2024-11-06 23:50:12,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47334975] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 23:50:12,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 23:50:12,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-06 23:50:12,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576405579]
[2024-11-06 23:50:12,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 23:50:12,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-11-06 23:50:12,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-06 23:50:12,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-11-06 23:50:12,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-06 23:50:12,695 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-06 23:50:12,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 23:50:12,748 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions.
[2024-11-06 23:50:12,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2024-11-06 23:50:12,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10
[2024-11-06 23:50:12,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 23:50:12,753 INFO L225 Difference]: With dead ends: 25
[2024-11-06 23:50:12,754 INFO L226 Difference]: Without dead ends: 15
[2024-11-06 23:50:12,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-06 23:50:12,757 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-06 23:50:12,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 23:50:12,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2024-11-06 23:50:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2024-11-06 23:50:12,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-11-06 23:50:12,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions.
[2024-11-06 23:50:12,779 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10
[2024-11-06 23:50:12,779 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-06 23:50:12,779 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions.
[2024-11-06 23:50:12,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2024-11-06 23:50:12,779 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions.
[2024-11-06 23:50:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2024-11-06 23:50:12,780 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-06 23:50:12,780 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 23:50:12,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-06 23:50:12,780 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 23:50:12,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 23:50:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times
[2024-11-06 23:50:12,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-06 23:50:12,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464639149]
[2024-11-06 23:50:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 23:50:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-06 23:50:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 23:50:12,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-06 23:50:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 23:50:12,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2024-11-06 23:50:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 23:50:12,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-06 23:50:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-06 23:50:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464639149]
[2024-11-06 23:50:12,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464639149] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-06 23:50:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178279050]
[2024-11-06 23:50:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 23:50:12,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 23:50:12,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 23:50:12,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-06 23:50:12,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-06 23:50:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 23:50:12,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-06 23:50:12,987 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 23:50:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-11-06 23:50:13,065 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 23:50:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-06 23:50:13,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178279050] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-06 23:50:13,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-06 23:50:13,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10
[2024-11-06 23:50:13,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719533545]
[2024-11-06 23:50:13,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-06 23:50:13,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-06 23:50:13,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-06 23:50:13,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-06 23:50:13,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2024-11-06 23:50:13,235 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5)
[2024-11-06 23:50:13,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 23:50:13,272 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions.
[2024-11-06 23:50:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-06 23:50:13,272 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 16
[2024-11-06 23:50:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 23:50:13,273 INFO L225 Difference]: With dead ends: 22
[2024-11-06 23:50:13,273 INFO L226 Difference]: Without dead ends: 18
[2024-11-06 23:50:13,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2024-11-06 23:50:13,274 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-06 23:50:13,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 34 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 23:50:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2024-11-06 23:50:13,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2024-11-06 23:50:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4)
[2024-11-06 23:50:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions.
[2024-11-06 23:50:13,277 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16
[2024-11-06 23:50:13,277 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-11-06 23:50:13,277 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions.
[2024-11-06 23:50:13,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 10 states have internal predecessors, (19), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5)
[2024-11-06 23:50:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions.
[2024-11-06 23:50:13,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-11-06 23:50:13,278 INFO L207 NwaCegarLoop]: Found error trace
[2024-11-06 23:50:13,278 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 23:50:13,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-06 23:50:13,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-06 23:50:13,482 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 23:50:13,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 23:50:13,483 INFO L85 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times
[2024-11-06 23:50:13,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-06 23:50:13,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676850442]
[2024-11-06 23:50:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 23:50:13,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-06 23:50:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-06 23:50:13,493 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-06 23:50:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-06 23:50:13,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-06 23:50:13,509 INFO L325 BasicCegarLoop]: Counterexample is feasible
[2024-11-06 23:50:13,510 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2024-11-06 23:50:13,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-06 23:50:13,513 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1]
[2024-11-06 23:50:13,526 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-06 23:50:13,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:50:13 BoogieIcfgContainer
[2024-11-06 23:50:13,531 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-06 23:50:13,531 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-06 23:50:13,531 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-06 23:50:13,531 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-06 23:50:13,532 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:50:12" (3/4) ...
[2024-11-06 23:50:13,532 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample
[2024-11-06 23:50:13,555 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml
[2024-11-06 23:50:13,555 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-06 23:50:13,555 INFO L158 Benchmark]: Toolchain (without parser) took 1628.69ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 100.1MB in the end (delta: 17.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2024-11-06 23:50:13,555 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-06 23:50:13,555 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.68ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 106.5MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-06 23:50:13,555 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.39ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 105.6MB in the end (delta: 927.5kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-06 23:50:13,556 INFO L158 Benchmark]: Boogie Preprocessor took 20.03ms. Allocated memory is still 142.6MB. Free memory was 105.4MB in the beginning and 104.5MB in the end (delta: 935.9kB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-06 23:50:13,556 INFO L158 Benchmark]: RCFGBuilder took 168.07ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 95.2MB in the end (delta: 9.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-06 23:50:13,556 INFO L158 Benchmark]: TraceAbstraction took 1175.45ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 101.9MB in the end (delta: -7.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-06 23:50:13,557 INFO L158 Benchmark]: Witness Printer took 23.37ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 100.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-06 23:50:13,559 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 218.68ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 106.5MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 17.39ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 105.6MB in the end (delta: 927.5kB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 20.03ms. Allocated memory is still 142.6MB. Free memory was 105.4MB in the beginning and 104.5MB in the end (delta: 935.9kB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 168.07ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 95.2MB in the end (delta: 9.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 1175.45ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 101.9MB in the end (delta: -7.2MB). There was no memory consumed. Max. memory is 16.1GB.
* Witness Printer took 23.37ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 100.1MB in the end (delta: 1.7MB). There was no memory consumed. 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
- CounterExampleResult [Line: 18]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L14] int a = 2;
[L15] int b = 3;
VAL [a=2, b=3]
[L16] CALL, EXPR sum(a, b)
VAL [\old(m)=3, \old(n)=2]
[L6] COND FALSE !(n <= 0)
VAL [\old(m)=3, \old(n)=2, m=3, n=2]
[L9] CALL, EXPR sum(n - 1, m + 1)
VAL [\old(m)=4, \old(n)=1]
[L6] COND FALSE !(n <= 0)
VAL [\old(m)=4, \old(n)=1, m=4, n=1]
[L9] CALL, EXPR sum(n - 1, m + 1)
VAL [\old(m)=5, \old(n)=0]
[L6] COND TRUE n <= 0
[L7] return m + n;
VAL [\old(m)=5, \old(n)=0, \result=5]
[L9] RET, EXPR sum(n - 1, m + 1)
VAL [\old(m)=4, \old(n)=1, m=4, n=1]
[L9] return sum(n - 1, m + 1);
[L9] RET, EXPR sum(n - 1, m + 1)
VAL [\old(m)=3, \old(n)=2, m=3, n=2]
[L9] return sum(n - 1, m + 1);
[L16] RET, EXPR sum(a, b)
VAL [a=2, b=3]
[L16] int result = sum(a, b);
[L17] COND TRUE result == a + b
[L18] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 22 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 1 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 5/12 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
RESULT: Ultimate proved your program to be incorrect!
[2024-11-06 23:50:13,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE