./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.10.c --full-output --architecture 64bit
--------------------------------------------------------------------------------
Checking for overflows
Using default analysis
Version 5e519f3a
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ee0ccea6b90e9b6a2f2fc862a3a7704844534359e41607705cde2a5dfc759de7
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-5e519f3
[2022-11-02 20:35:44,312 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-02 20:35:44,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 20:35:44,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 20:35:44,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 20:35:44,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 20:35:44,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 20:35:44,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 20:35:44,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 20:35:44,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 20:35:44,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 20:35:44,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 20:35:44,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 20:35:44,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 20:35:44,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 20:35:44,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 20:35:44,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 20:35:44,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 20:35:44,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 20:35:44,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 20:35:44,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 20:35:44,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 20:35:44,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 20:35:44,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 20:35:44,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 20:35:44,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 20:35:44,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 20:35:44,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 20:35:44,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 20:35:44,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 20:35:44,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 20:35:44,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 20:35:44,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 20:35:44,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 20:35:44,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 20:35:44,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 20:35:44,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 20:35:44,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 20:35:44,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 20:35:44,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 20:35:44,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 20:35:44,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-64bit-Automizer_Default.epf
[2022-11-02 20:35:44,457 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-02 20:35:44,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 20:35:44,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 20:35:44,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 20:35:44,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 20:35:44,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 20:35:44,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 20:35:44,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-02 20:35:44,470 INFO L138 SettingsManager]: * Use SBE=true
[2022-11-02 20:35:44,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 20:35:44,471 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2022-11-02 20:35:44,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-11-02 20:35:44,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-02 20:35:44,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-11-02 20:35:44,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 20:35:44,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-11-02 20:35:44,473 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true
[2022-11-02 20:35:44,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-11-02 20:35:44,474 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-02 20:35:44,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-11-02 20:35:44,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 20:35:44,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-11-02 20:35:44,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-02 20:35:44,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:35:44,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 20:35:44,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 20:35:44,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-02 20:35:44,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-11-02 20:35:44,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 20:35:44,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-02 20:35:44,476 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee0ccea6b90e9b6a2f2fc862a3a7704844534359e41607705cde2a5dfc759de7
[2022-11-02 20:35:44,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 20:35:44,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 20:35:44,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 20:35:44,829 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-02 20:35:44,833 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-02 20:35:44,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.10.c
[2022-11-02 20:35:44,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/data/ddee60b0e/7c77c8ed0e2b42b29b21c6cbff984321/FLAGb5e862705
[2022-11-02 20:35:45,466 INFO L306 CDTParser]: Found 1 translation units.
[2022-11-02 20:35:45,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.10.c
[2022-11-02 20:35:45,476 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/data/ddee60b0e/7c77c8ed0e2b42b29b21c6cbff984321/FLAGb5e862705
[2022-11-02 20:35:45,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/data/ddee60b0e/7c77c8ed0e2b42b29b21c6cbff984321
[2022-11-02 20:35:45,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 20:35:45,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 20:35:45,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 20:35:45,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 20:35:45,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 20:35:45,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:45" (1/1) ...
[2022-11-02 20:35:45,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df763d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45, skipping insertion in model container
[2022-11-02 20:35:45,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:45" (1/1) ...
[2022-11-02 20:35:45,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-02 20:35:45,867 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-02 20:35:46,031 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:35:46,063 INFO L203 MainTranslator]: Completed pre-run
[2022-11-02 20:35:46,082 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:35:46,093 INFO L208 MainTranslator]: Completed translation
[2022-11-02 20:35:46,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:46 WrapperNode
[2022-11-02 20:35:46,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 20:35:46,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 20:35:46,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 20:35:46,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 20:35:46,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:46" (1/1) ...
[2022-11-02 20:35:46,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:46" (1/1) ...
[2022-11-02 20:35:46,130 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22
[2022-11-02 20:35:46,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 20:35:46,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 20:35:46,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 20:35:46,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 20:35:46,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:46" (1/1) ...
[2022-11-02 20:35:46,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:46" (1/1) ...
[2022-11-02 20:35:46,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:46" (1/1) ...
[2022-11-02 20:35:46,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:46" (1/1) ...
[2022-11-02 20:35:46,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:46" (1/1) ...
[2022-11-02 20:35:46,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:46" (1/1) ...
[2022-11-02 20:35:46,148 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:46" (1/1) ...
[2022-11-02 20:35:46,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:46" (1/1) ...
[2022-11-02 20:35:46,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 20:35:46,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 20:35:46,151 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 20:35:46,151 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-11-02 20:35:46,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:46" (1/1) ...
[2022-11-02 20:35:46,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:35:46,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:35:46,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 20:35:46,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 20:35:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 20:35:46,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 20:35:46,294 INFO L235 CfgBuilder]: Building ICFG
[2022-11-02 20:35:46,297 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 20:35:46,427 INFO L276 CfgBuilder]: Performing block encoding
[2022-11-02 20:35:46,435 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 20:35:46,435 INFO L300 CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-02 20:35:46,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:46 BoogieIcfgContainer
[2022-11-02 20:35:46,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 20:35:46,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 20:35:46,440 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 20:35:46,447 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-11-02 20:35:46,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:35:45" (1/3) ...
[2022-11-02 20:35:46,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d5bfb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:46, skipping insertion in model container
[2022-11-02 20:35:46,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:46" (2/3) ...
[2022-11-02 20:35:46,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d5bfb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:46, skipping insertion in model container
[2022-11-02 20:35:46,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:46" (3/3) ...
[2022-11-02 20:35:46,452 INFO L112 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.10.c
[2022-11-02 20:35:46,472 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 20:35:46,472 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations.
[2022-11-02 20:35:46,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 20:35:46,555 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e2753b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 20:35:46,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2022-11-02 20:35:46,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 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)
[2022-11-02 20:35:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2022-11-02 20:35:46,575 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:35:46,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2022-11-02 20:35:46,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] ===
[2022-11-02 20:35:46,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:35:46,585 INFO L85 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times
[2022-11-02 20:35:46,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:35:46,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104805390]
[2022-11-02 20:35:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:46,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:35:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:35:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:35:46,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:35:46,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104805390]
[2022-11-02 20:35:46,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104805390] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:35:46,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:35:46,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 20:35:46,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203053518]
[2022-11-02 20:35:46,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:35:46,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:35:46,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:35:46,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:35:46,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:35:46,930 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 states have internal predecessors, (16), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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)
[2022-11-02 20:35:46,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:35:46,981 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions.
[2022-11-02 20:35:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-11-02 20:35:46,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4
[2022-11-02 20:35:46,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:35:46,995 INFO L225 Difference]: With dead ends: 19
[2022-11-02 20:35:46,995 INFO L226 Difference]: Without dead ends: 10
[2022-11-02 20:35:47,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:35:47,008 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:35:47,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:35:47,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2022-11-02 20:35:47,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10.
[2022-11-02 20:35:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 9 states have internal predecessors, (10), 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)
[2022-11-02 20:35:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions.
[2022-11-02 20:35:47,055 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 4
[2022-11-02 20:35:47,055 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:35:47,055 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions.
[2022-11-02 20:35:47,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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)
[2022-11-02 20:35:47,056 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions.
[2022-11-02 20:35:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2022-11-02 20:35:47,056 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:35:47,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2022-11-02 20:35:47,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-02 20:35:47,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] ===
[2022-11-02 20:35:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:35:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash 28699721, now seen corresponding path program 1 times
[2022-11-02 20:35:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:35:47,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648847400]
[2022-11-02 20:35:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:47,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:35:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:35:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:35:47,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:35:47,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648847400]
[2022-11-02 20:35:47,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648847400] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:35:47,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:35:47,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 20:35:47,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719862636]
[2022-11-02 20:35:47,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:35:47,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 20:35:47,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:35:47,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 20:35:47,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 20:35:47,168 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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)
[2022-11-02 20:35:47,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:35:47,216 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions.
[2022-11-02 20:35:47,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-11-02 20:35:47,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5
[2022-11-02 20:35:47,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:35:47,217 INFO L225 Difference]: With dead ends: 10
[2022-11-02 20:35:47,218 INFO L226 Difference]: Without dead ends: 9
[2022-11-02 20:35:47,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-02 20:35:47,220 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:35:47,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:35:47,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2022-11-02 20:35:47,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9.
[2022-11-02 20:35:47,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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)
[2022-11-02 20:35:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2022-11-02 20:35:47,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5
[2022-11-02 20:35:47,227 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:35:47,228 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2022-11-02 20:35:47,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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)
[2022-11-02 20:35:47,228 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2022-11-02 20:35:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-11-02 20:35:47,229 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:35:47,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-11-02 20:35:47,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-02 20:35:47,230 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] ===
[2022-11-02 20:35:47,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:35:47,231 INFO L85 PathProgramCache]: Analyzing trace with hash 889691398, now seen corresponding path program 1 times
[2022-11-02 20:35:47,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:35:47,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904606964]
[2022-11-02 20:35:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:47,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:35:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:35:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:35:47,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:35:47,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904606964]
[2022-11-02 20:35:47,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904606964] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:35:47,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:35:47,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 20:35:47,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008038744]
[2022-11-02 20:35:47,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:35:47,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 20:35:47,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:35:47,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 20:35:47,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 20:35:47,269 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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)
[2022-11-02 20:35:47,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:35:47,288 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions.
[2022-11-02 20:35:47,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 20:35:47,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6
[2022-11-02 20:35:47,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:35:47,291 INFO L225 Difference]: With dead ends: 9
[2022-11-02 20:35:47,291 INFO L226 Difference]: Without dead ends: 8
[2022-11-02 20:35:47,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 20:35:47,294 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:35:47,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:35:47,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states.
[2022-11-02 20:35:47,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8.
[2022-11-02 20:35:47,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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)
[2022-11-02 20:35:47,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions.
[2022-11-02 20:35:47,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6
[2022-11-02 20:35:47,305 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:35:47,305 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions.
[2022-11-02 20:35:47,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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)
[2022-11-02 20:35:47,306 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions.
[2022-11-02 20:35:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-11-02 20:35:47,307 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:35:47,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:35:47,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-02 20:35:47,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] ===
[2022-11-02 20:35:47,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:35:47,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1810629611, now seen corresponding path program 1 times
[2022-11-02 20:35:47,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:35:47,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413445486]
[2022-11-02 20:35:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:47,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:35:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 20:35:47,336 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-11-02 20:35:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 20:35:47,359 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-11-02 20:35:47,360 INFO L359 BasicCegarLoop]: Counterexample is feasible
[2022-11-02 20:35:47,361 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining)
[2022-11-02 20:35:47,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining)
[2022-11-02 20:35:47,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining)
[2022-11-02 20:35:47,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining)
[2022-11-02 20:35:47,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-11-02 20:35:47,368 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2022-11-02 20:35:47,373 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-11-02 20:35:47,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:35:47 BoogieIcfgContainer
[2022-11-02 20:35:47,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-11-02 20:35:47,394 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2022-11-02 20:35:47,394 INFO L271 PluginConnector]: Initializing Witness Printer...
[2022-11-02 20:35:47,394 INFO L275 PluginConnector]: Witness Printer initialized
[2022-11-02 20:35:47,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:46" (3/4) ...
[2022-11-02 20:35:47,396 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2022-11-02 20:35:47,424 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/witness.graphml
[2022-11-02 20:35:47,424 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2022-11-02 20:35:47,425 INFO L158 Benchmark]: Toolchain (without parser) took 1589.67ms. Allocated memory is still 123.7MB. Free memory was 91.0MB in the beginning and 87.5MB in the end (delta: 3.5MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB.
[2022-11-02 20:35:47,426 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory was 42.8MB in the beginning and 42.8MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 20:35:47,426 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.30ms. Allocated memory is still 123.7MB. Free memory was 90.8MB in the beginning and 101.2MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2022-11-02 20:35:47,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.74ms. Allocated memory is still 123.7MB. Free memory was 101.2MB in the beginning and 100.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 20:35:47,427 INFO L158 Benchmark]: Boogie Preprocessor took 15.70ms. Allocated memory is still 123.7MB. Free memory was 100.0MB in the beginning and 99.1MB in the end (delta: 950.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-11-02 20:35:47,427 INFO L158 Benchmark]: RCFGBuilder took 286.72ms. Allocated memory is still 123.7MB. Free memory was 99.1MB in the beginning and 90.3MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2022-11-02 20:35:47,428 INFO L158 Benchmark]: TraceAbstraction took 953.11ms. Allocated memory is still 123.7MB. Free memory was 89.9MB in the beginning and 88.6MB in the end (delta: 1.3MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB.
[2022-11-02 20:35:47,428 INFO L158 Benchmark]: Witness Printer took 30.82ms. Allocated memory is still 123.7MB. Free memory was 88.6MB in the beginning and 87.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 20:35:47,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory was 42.8MB in the beginning and 42.8MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 257.30ms. Allocated memory is still 123.7MB. Free memory was 90.8MB in the beginning and 101.2MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 36.74ms. Allocated memory is still 123.7MB. Free memory was 101.2MB in the beginning and 100.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 15.70ms. Allocated memory is still 123.7MB. Free memory was 100.0MB in the beginning and 99.1MB in the end (delta: 950.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 286.72ms. Allocated memory is still 123.7MB. Free memory was 99.1MB in the beginning and 90.3MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 953.11ms. Allocated memory is still 123.7MB. Free memory was 89.9MB in the beginning and 88.6MB in the end (delta: 1.3MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB.
* Witness Printer took 30.82ms. Allocated memory is still 123.7MB. Free memory was 88.6MB in the beginning and 87.5MB in the end (delta: 1.2MB). 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: 28]: integer overflow possible
integer overflow possible
We found a FailurePath:
[L23] int x, y;
[L24] x = __VERIFIER_nondet_int()
[L25] y = __VERIFIER_nondet_int()
[L26] COND TRUE x > 0 && y < 0
VAL [x=1, y=-2147483648]
[L27] EXPR x + y
[L27] x = x + y
VAL [x=-2147483647, y=-2147483648]
[L28] y - 1
VAL [x=-2147483647, y=-2147483648]
- UnprovableResult [Line: 27]: Unable to prove that integer overflow can never occur
Unable to prove that integer overflow can never occur
Reason: Not analyzed.
- UnprovableResult [Line: 27]: Unable to prove that integer overflow can never occur
Unable to prove that integer overflow can never occur
Reason: Not analyzed.
- UnprovableResult [Line: 28]: Unable to prove that integer overflow can never occur
Unable to prove that integer overflow can never occur
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 13 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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!
[2022-11-02 20:35:47,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ee6c52e-9d0e-4183-9f95-13cd4ae12bc5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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(OVERFLOW)