./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/TwoWay.c --full-output --architecture 64bit
--------------------------------------------------------------------------------
Checking for overflows
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/TwoWay.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y --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 6e96af222dc7427442f09a30ad05a811063c14ee1b704442df6b3bb77339a035
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:27:29,489 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:27:29,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:27:29,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:27:29,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:27:29,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:27:29,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:27:29,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:27:29,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:27:29,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:27:29,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:27:29,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:27:29,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:27:29,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:27:29,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:27:29,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:27:29,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:27:29,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:27:29,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:27:29,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:27:29,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:27:29,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:27:29,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:27:29,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:27:29,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:27:29,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:27:29,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:27:29,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:27:29,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:27:29,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:27:29,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:27:29,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:27:29,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:27:29,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:27:29,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:27:29,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:27:29,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:27:29,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:27:29,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:27:29,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:27:29,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:27:29,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/config/svcomp-Overflow-64bit-Automizer_Default.epf
[2021-11-13 18:27:29,670 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:27:29,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:27:29,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:27:29,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:27:29,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:27:29,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:27:29,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:27:29,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:27:29,675 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:27:29,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:27:29,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2021-11-13 18:27:29,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 18:27:29,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:27:29,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 18:27:29,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:27:29,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 18:27:29,677 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true
[2021-11-13 18:27:29,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 18:27:29,678 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:27:29,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 18:27:29,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:27:29,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:27:29,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:27:29,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:27:29,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:27:29,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:27:29,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 18:27:29,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 18:27:29,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 18:27:29,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 18:27:29,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:27:29,682 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_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e96af222dc7427442f09a30ad05a811063c14ee1b704442df6b3bb77339a035
[2021-11-13 18:27:30,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:27:30,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:27:30,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:27:30,043 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:27:30,044 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:27:30,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/termination-numeric/TwoWay.c
[2021-11-13 18:27:30,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/data/227377a0b/c6ed733e362e4d33ae752fd2ed516f65/FLAG8cc9b4d2e
[2021-11-13 18:27:30,521 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:27:30,522 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/sv-benchmarks/c/termination-numeric/TwoWay.c
[2021-11-13 18:27:30,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/data/227377a0b/c6ed733e362e4d33ae752fd2ed516f65/FLAG8cc9b4d2e
[2021-11-13 18:27:30,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/data/227377a0b/c6ed733e362e4d33ae752fd2ed516f65
[2021-11-13 18:27:30,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:27:30,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 18:27:30,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:27:30,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:27:30,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:27:30,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:27:30" (1/1) ...
[2021-11-13 18:27:30,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70fcb472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:30, skipping insertion in model container
[2021-11-13 18:27:30,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:27:30" (1/1) ...
[2021-11-13 18:27:30,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:27:30,952 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:27:31,141 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:27:31,145 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 18:27:31,159 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:27:31,169 INFO L208 MainTranslator]: Completed translation
[2021-11-13 18:27:31,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:31 WrapperNode
[2021-11-13 18:27:31,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:27:31,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 18:27:31,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 18:27:31,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 18:27:31,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:31" (1/1) ...
[2021-11-13 18:27:31,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:31" (1/1) ...
[2021-11-13 18:27:31,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 18:27:31,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:27:31,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:27:31,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:27:31,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:31" (1/1) ...
[2021-11-13 18:27:31,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:31" (1/1) ...
[2021-11-13 18:27:31,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:31" (1/1) ...
[2021-11-13 18:27:31,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:31" (1/1) ...
[2021-11-13 18:27:31,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:31" (1/1) ...
[2021-11-13 18:27:31,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:31" (1/1) ...
[2021-11-13 18:27:31,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:31" (1/1) ...
[2021-11-13 18:27:31,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:27:31,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:27:31,220 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:27:31,220 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:27:31,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:31" (1/1) ...
[2021-11-13 18:27:31,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:27:31,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:27:31,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:27:31,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:27:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure twoWay
[2021-11-13 18:27:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure twoWay
[2021-11-13 18:27:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:27:31,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:27:31,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:27:31,523 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2021-11-13 18:27:31,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:27:31 BoogieIcfgContainer
[2021-11-13 18:27:31,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:27:31,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:27:31,527 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:27:31,537 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:27:31,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:27:30" (1/3) ...
[2021-11-13 18:27:31,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d266fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:27:31, skipping insertion in model container
[2021-11-13 18:27:31,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:27:31" (2/3) ...
[2021-11-13 18:27:31,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d266fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:27:31, skipping insertion in model container
[2021-11-13 18:27:31,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:27:31" (3/3) ...
[2021-11-13 18:27:31,542 INFO L111 eAbstractionObserver]: Analyzing ICFG TwoWay.c
[2021-11-13 18:27:31,551 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:27:31,552 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations.
[2021-11-13 18:27:31,601 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:27:31,608 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR
[2021-11-13 18:27:31,609 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2021-11-13 18:27:31,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 24 states have internal predecessors, (28), 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)
[2021-11-13 18:27:31,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2021-11-13 18:27:31,631 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:27:31,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:27:31,632 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-13 18:27:31,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:27:31,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1961604011, now seen corresponding path program 1 times
[2021-11-13 18:27:31,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:27:31,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488570595]
[2021-11-13 18:27:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:31,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:27:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:27:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:27:31,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:27:31,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488570595]
[2021-11-13 18:27:31,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488570595] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:27:31,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:27:31,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-11-13 18:27:31,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789316073]
[2021-11-13 18:27:31,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:27:31,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:27:31,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:27:31,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:27:31,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:27:31,998 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 24 states have internal predecessors, (28), 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 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:27:32,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:27:32,242 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions.
[2021-11-13 18:27:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 18:27:32,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2021-11-13 18:27:32,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:27:32,254 INFO L225 Difference]: With dead ends: 57
[2021-11-13 18:27:32,255 INFO L226 Difference]: Without dead ends: 52
[2021-11-13 18:27:32,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2021-11-13 18:27:32,262 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 54 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.31ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.49ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:27:32,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 132 Invalid, 94 Unknown, 0 Unchecked, 6.31ms Time], IncrementalHoareTripleChecker [13 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 144.49ms Time]
[2021-11-13 18:27:32,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2021-11-13 18:27:32,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38.
[2021-11-13 18:27:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 33 states have internal predecessors, (41), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2021-11-13 18:27:32,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions.
[2021-11-13 18:27:32,302 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 9
[2021-11-13 18:27:32,302 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:27:32,302 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions.
[2021-11-13 18:27:32,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:27:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions.
[2021-11-13 18:27:32,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2021-11-13 18:27:32,304 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:27:32,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:27:32,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 18:27:32,305 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-13 18:27:32,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:27:32,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1961604203, now seen corresponding path program 1 times
[2021-11-13 18:27:32,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:27:32,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533250627]
[2021-11-13 18:27:32,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:32,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:27:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:27:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:27:32,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:27:32,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533250627]
[2021-11-13 18:27:32,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533250627] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:27:32,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:27:32,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-13 18:27:32,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613685529]
[2021-11-13 18:27:32,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:27:32,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:27:32,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:27:32,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:27:32,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:27:32,344 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:27:32,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:27:32,381 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions.
[2021-11-13 18:27:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:27:32,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2021-11-13 18:27:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:27:32,383 INFO L225 Difference]: With dead ends: 46
[2021-11-13 18:27:32,383 INFO L226 Difference]: Without dead ends: 19
[2021-11-13 18:27:32,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:27:32,386 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.93ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.54ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:27:32,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 26 Invalid, 7 Unknown, 0 Unchecked, 0.93ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 21.54ms Time]
[2021-11-13 18:27:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2021-11-13 18:27:32,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2021-11-13 18:27:32,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:27:32,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions.
[2021-11-13 18:27:32,392 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 9
[2021-11-13 18:27:32,393 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:27:32,393 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions.
[2021-11-13 18:27:32,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:27:32,393 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions.
[2021-11-13 18:27:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-11-13 18:27:32,394 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:27:32,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:27:32,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-13 18:27:32,395 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-13 18:27:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:27:32,396 INFO L85 PathProgramCache]: Analyzing trace with hash 680182238, now seen corresponding path program 1 times
[2021-11-13 18:27:32,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:27:32,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215853833]
[2021-11-13 18:27:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:32,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:27:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:27:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:27:32,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:27:32,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215853833]
[2021-11-13 18:27:32,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215853833] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:27:32,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:27:32,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:27:32,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342348371]
[2021-11-13 18:27:32,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:27:32,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:27:32,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:27:32,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:27:32,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:27:32,447 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:27:32,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:27:32,487 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions.
[2021-11-13 18:27:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:27:32,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2021-11-13 18:27:32,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:27:32,491 INFO L225 Difference]: With dead ends: 19
[2021-11-13 18:27:32,491 INFO L226 Difference]: Without dead ends: 18
[2021-11-13 18:27:32,492 INFO L932 BasicCegarLoop]: 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
[2021-11-13 18:27:32,495 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.03ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:27:32,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 43 Invalid, 9 Unknown, 0 Unchecked, 2.45ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 20.03ms Time]
[2021-11-13 18:27:32,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2021-11-13 18:27:32,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2021-11-13 18:27:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:27:32,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions.
[2021-11-13 18:27:32,501 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10
[2021-11-13 18:27:32,501 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:27:32,501 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions.
[2021-11-13 18:27:32,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:27:32,502 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions.
[2021-11-13 18:27:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2021-11-13 18:27:32,503 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:27:32,503 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:27:32,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-11-13 18:27:32,503 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-13 18:27:32,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:27:32,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1610134437, now seen corresponding path program 1 times
[2021-11-13 18:27:32,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:27:32,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842150618]
[2021-11-13 18:27:32,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:32,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:27:32,547 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:27:32,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511458719]
[2021-11-13 18:27:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:32,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:27:32,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:27:32,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:27:32,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 18:27:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:27:32,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-11-13 18:27:32,601 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:27:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:27:32,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:27:32,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:27:32,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842150618]
[2021-11-13 18:27:32,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:27:32,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511458719]
[2021-11-13 18:27:32,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511458719] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:27:32,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:27:32,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-13 18:27:32,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844136111]
[2021-11-13 18:27:32,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:27:32,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:27:32,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:27:32,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:27:32,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:27:32,785 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:27:32,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:27:32,842 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions.
[2021-11-13 18:27:32,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 18:27:32,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17
[2021-11-13 18:27:32,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:27:32,846 INFO L225 Difference]: With dead ends: 25
[2021-11-13 18:27:32,847 INFO L226 Difference]: Without dead ends: 24
[2021-11-13 18:27:32,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:27:32,851 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.76ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:27:32,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 33 Invalid, 30 Unknown, 0 Unchecked, 1.13ms Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 26.76ms Time]
[2021-11-13 18:27:32,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2021-11-13 18:27:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22.
[2021-11-13 18:27:32,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-13 18:27:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions.
[2021-11-13 18:27:32,865 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17
[2021-11-13 18:27:32,865 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:27:32,866 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions.
[2021-11-13 18:27:32,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:27:32,866 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions.
[2021-11-13 18:27:32,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-11-13 18:27:32,869 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:27:32,869 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:27:32,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 18:27:33,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:27:33,085 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-13 18:27:33,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:27:33,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1625439951, now seen corresponding path program 1 times
[2021-11-13 18:27:33,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:27:33,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281634633]
[2021-11-13 18:27:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:33,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:27:33,111 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:27:33,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058337961]
[2021-11-13 18:27:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:33,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:27:33,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:27:33,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:27:33,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 18:27:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:27:33,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-11-13 18:27:33,162 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:27:33,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:27:33,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:27:33,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:27:33,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281634633]
[2021-11-13 18:27:33,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:27:33,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058337961]
[2021-11-13 18:27:33,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058337961] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:27:33,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:27:33,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:27:33,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320946881]
[2021-11-13 18:27:33,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:27:33,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-11-13 18:27:33,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:27:33,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-11-13 18:27:33,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2021-11-13 18:27:33,290 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 8 states, 6 states have (on average 2.5) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:27:33,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:27:33,383 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions.
[2021-11-13 18:27:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-11-13 18:27:33,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18
[2021-11-13 18:27:33,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:27:33,385 INFO L225 Difference]: With dead ends: 24
[2021-11-13 18:27:33,385 INFO L226 Difference]: Without dead ends: 23
[2021-11-13 18:27:33,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156
[2021-11-13 18:27:33,387 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.52ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.09ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:27:33,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 42 Invalid, 69 Unknown, 0 Unchecked, 1.52ms Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 45.09ms Time]
[2021-11-13 18:27:33,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2021-11-13 18:27:33,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2021-11-13 18:27:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2021-11-13 18:27:33,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions.
[2021-11-13 18:27:33,393 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 18
[2021-11-13 18:27:33,393 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:27:33,393 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions.
[2021-11-13 18:27:33,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.5) internal successors, (15), 8 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:27:33,394 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions.
[2021-11-13 18:27:33,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-11-13 18:27:33,396 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:27:33,397 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:27:33,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 18:27:33,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:27:33,616 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-13 18:27:33,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:27:33,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1619183520, now seen corresponding path program 1 times
[2021-11-13 18:27:33,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:27:33,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894016269]
[2021-11-13 18:27:33,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:33,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:27:33,632 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:27:33,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630244870]
[2021-11-13 18:27:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:33,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:27:33,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:27:33,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:27:33,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 18:27:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:27:33,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-11-13 18:27:33,704 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:27:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-11-13 18:27:34,289 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:27:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-11-13 18:27:35,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:27:35,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894016269]
[2021-11-13 18:27:35,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:27:35,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630244870]
[2021-11-13 18:27:35,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630244870] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:27:35,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:27:35,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2021-11-13 18:27:35,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077529679]
[2021-11-13 18:27:35,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:27:35,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2021-11-13 18:27:35,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:27:35,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-11-13 18:27:35,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272
[2021-11-13 18:27:35,660 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-13 18:27:35,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:27:35,823 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions.
[2021-11-13 18:27:35,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-11-13 18:27:35,824 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28
[2021-11-13 18:27:35,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:27:35,825 INFO L225 Difference]: With dead ends: 28
[2021-11-13 18:27:35,826 INFO L226 Difference]: Without dead ends: 27
[2021-11-13 18:27:35,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462
[2021-11-13 18:27:35,827 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 33 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.18ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 77.35ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:27:35,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 98 Invalid, 90 Unknown, 0 Unchecked, 2.18ms Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 43 Unchecked, 77.35ms Time]
[2021-11-13 18:27:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-11-13 18:27:35,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2021-11-13 18:27:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 18:27:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions.
[2021-11-13 18:27:35,833 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 28
[2021-11-13 18:27:35,833 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:27:35,833 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions.
[2021-11-13 18:27:35,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 2 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4)
[2021-11-13 18:27:35,836 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions.
[2021-11-13 18:27:35,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2021-11-13 18:27:35,837 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:27:35,838 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:27:35,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 18:27:36,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2021-11-13 18:27:36,039 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-13 18:27:36,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:27:36,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1344918486, now seen corresponding path program 1 times
[2021-11-13 18:27:36,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:27:36,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560800783]
[2021-11-13 18:27:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:36,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:27:36,051 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:27:36,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113574574]
[2021-11-13 18:27:36,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:36,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:27:36,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:27:36,053 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:27:36,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-13 18:27:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:27:36,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjunts are in the unsatisfiable core
[2021-11-13 18:27:36,111 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:27:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-11-13 18:27:37,268 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:27:40,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:27:40,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560800783]
[2021-11-13 18:27:40,766 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:27:40,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113574574]
[2021-11-13 18:27:40,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113574574] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:27:40,767 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:27:40,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2021-11-13 18:27:40,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824009749]
[2021-11-13 18:27:40,767 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:27:40,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2021-11-13 18:27:40,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:27:40,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-11-13 18:27:40,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240
[2021-11-13 18:27:40,769 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-11-13 18:27:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:27:41,298 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions.
[2021-11-13 18:27:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-11-13 18:27:41,299 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29
[2021-11-13 18:27:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:27:41,300 INFO L225 Difference]: With dead ends: 31
[2021-11-13 18:27:41,300 INFO L226 Difference]: Without dead ends: 30
[2021-11-13 18:27:41,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462
[2021-11-13 18:27:41,302 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.84ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 63.23ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:27:41,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 52 Invalid, 107 Unknown, 0 Unchecked, 0.84ms Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 36 Unchecked, 63.23ms Time]
[2021-11-13 18:27:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2021-11-13 18:27:41,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28.
[2021-11-13 18:27:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3)
[2021-11-13 18:27:41,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions.
[2021-11-13 18:27:41,307 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 29
[2021-11-13 18:27:41,308 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:27:41,308 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions.
[2021-11-13 18:27:41,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-11-13 18:27:41,308 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions.
[2021-11-13 18:27:41,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2021-11-13 18:27:41,310 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:27:41,310 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:27:41,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-13 18:27:41,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:27:41,532 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-13 18:27:41,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:27:41,533 INFO L85 PathProgramCache]: Analyzing trace with hash -740717581, now seen corresponding path program 2 times
[2021-11-13 18:27:41,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:27:41,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403318360]
[2021-11-13 18:27:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:41,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:27:41,546 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:27:41,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423556987]
[2021-11-13 18:27:41,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 18:27:41,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:27:41,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:27:41,560 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:27:41,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-11-13 18:27:41,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 18:27:41,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:27:41,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-11-13 18:27:41,605 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:27:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-11-13 18:27:41,865 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:27:43,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:27:43,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403318360]
[2021-11-13 18:27:43,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:27:43,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423556987]
[2021-11-13 18:27:43,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423556987] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:27:43,343 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:27:43,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2021-11-13 18:27:43,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709547110]
[2021-11-13 18:27:43,344 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:27:43,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2021-11-13 18:27:43,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:27:43,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-11-13 18:27:43,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342
[2021-11-13 18:27:43,345 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-11-13 18:27:43,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:27:43,650 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions.
[2021-11-13 18:27:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-11-13 18:27:43,651 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39
[2021-11-13 18:27:43,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:27:43,652 INFO L225 Difference]: With dead ends: 37
[2021-11-13 18:27:43,652 INFO L226 Difference]: Without dead ends: 36
[2021-11-13 18:27:43,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702
[2021-11-13 18:27:43,653 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 67 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.58ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.62ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:27:43,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 125 Invalid, 210 Unknown, 0 Unchecked, 1.58ms Time], IncrementalHoareTripleChecker [21 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 115.62ms Time]
[2021-11-13 18:27:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2021-11-13 18:27:43,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32.
[2021-11-13 18:27:43,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4)
[2021-11-13 18:27:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions.
[2021-11-13 18:27:43,659 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 39
[2021-11-13 18:27:43,659 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:27:43,660 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions.
[2021-11-13 18:27:43,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 14 states have internal predecessors, (31), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-11-13 18:27:43,660 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions.
[2021-11-13 18:27:43,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2021-11-13 18:27:43,661 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:27:43,662 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:27:43,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-11-13 18:27:43,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2021-11-13 18:27:43,888 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-13 18:27:43,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:27:43,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1487408477, now seen corresponding path program 2 times
[2021-11-13 18:27:43,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:27:43,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368227800]
[2021-11-13 18:27:43,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:43,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:27:43,901 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:27:43,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586183883]
[2021-11-13 18:27:43,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 18:27:43,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:27:43,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:27:43,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:27:43,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-11-13 18:27:43,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 18:27:43,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:27:43,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-11-13 18:27:43,955 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:27:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-11-13 18:27:44,234 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:27:49,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:27:49,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368227800]
[2021-11-13 18:27:49,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:27:49,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586183883]
[2021-11-13 18:27:49,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586183883] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:27:49,889 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:27:49,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2021-11-13 18:27:49,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409232777]
[2021-11-13 18:27:49,889 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:27:49,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2021-11-13 18:27:49,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:27:49,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-11-13 18:27:49,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=288, Unknown=2, NotChecked=0, Total=342
[2021-11-13 18:27:49,890 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 15 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 14 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-11-13 18:27:50,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:27:50,180 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions.
[2021-11-13 18:27:50,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-11-13 18:27:50,181 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 14 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 40
[2021-11-13 18:27:50,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:27:50,182 INFO L225 Difference]: With dead ends: 36
[2021-11-13 18:27:50,182 INFO L226 Difference]: Without dead ends: 35
[2021-11-13 18:27:50,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=128, Invalid=572, Unknown=2, NotChecked=0, Total=702
[2021-11-13 18:27:50,183 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 87 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.49ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.91ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:27:50,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 107 Invalid, 194 Unknown, 0 Unchecked, 1.49ms Time], IncrementalHoareTripleChecker [28 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 97.91ms Time]
[2021-11-13 18:27:50,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2021-11-13 18:27:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33.
[2021-11-13 18:27:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4)
[2021-11-13 18:27:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions.
[2021-11-13 18:27:50,189 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 40
[2021-11-13 18:27:50,189 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:27:50,189 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions.
[2021-11-13 18:27:50,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 14 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-11-13 18:27:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions.
[2021-11-13 18:27:50,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2021-11-13 18:27:50,191 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:27:50,191 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:27:50,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-11-13 18:27:50,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:27:50,392 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] ===
[2021-11-13 18:27:50,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:27:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash 889808907, now seen corresponding path program 3 times
[2021-11-13 18:27:50,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:27:50,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976201044]
[2021-11-13 18:27:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:27:50,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:27:50,420 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-11-13 18:27:50,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835396799]
[2021-11-13 18:27:50,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-13 18:27:50,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:27:50,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:27:50,430 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:27:50,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-11-13 18:27:50,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-11-13 18:27:50,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:27:50,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-11-13 18:27:50,478 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:27:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked.
[2021-11-13 18:27:50,782 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:27:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked.
[2021-11-13 18:27:51,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:27:51,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976201044]
[2021-11-13 18:27:51,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-11-13 18:27:51,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835396799]
[2021-11-13 18:27:51,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835396799] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:27:51,593 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-11-13 18:27:51,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16
[2021-11-13 18:27:51,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62088974]
[2021-11-13 18:27:51,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:27:51,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2021-11-13 18:27:51,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:27:51,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-11-13 18:27:51,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272
[2021-11-13 18:27:51,595 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 17 states have internal predecessors, (36), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2021-11-13 18:27:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:27:51,798 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions.
[2021-11-13 18:27:51,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-11-13 18:27:51,799 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 17 states have internal predecessors, (36), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 56
[2021-11-13 18:27:51,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:27:51,799 INFO L225 Difference]: With dead ends: 33
[2021-11-13 18:27:51,799 INFO L226 Difference]: Without dead ends: 0
[2021-11-13 18:27:51,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650
[2021-11-13 18:27:51,801 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 80 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.36ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.63ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:27:51,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 82 Invalid, 156 Unknown, 0 Unchecked, 1.36ms Time], IncrementalHoareTripleChecker [33 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 81.63ms Time]
[2021-11-13 18:27:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-11-13 18:27:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-11-13 18:27:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 18:27:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-11-13 18:27:51,803 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56
[2021-11-13 18:27:51,803 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:27:51,803 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-11-13 18:27:51,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 17 states have internal predecessors, (36), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2021-11-13 18:27:51,803 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-11-13 18:27:51,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-11-13 18:27:51,806 INFO L764 garLoopResultBuilder]: Registering result SAFE for location twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining)
[2021-11-13 18:27:51,806 INFO L764 garLoopResultBuilder]: Registering result SAFE for location twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining)
[2021-11-13 18:27:51,806 INFO L764 garLoopResultBuilder]: Registering result SAFE for location twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining)
[2021-11-13 18:27:51,806 INFO L764 garLoopResultBuilder]: Registering result SAFE for location twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining)
[2021-11-13 18:27:51,807 INFO L764 garLoopResultBuilder]: Registering result SAFE for location twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining)
[2021-11-13 18:27:51,807 INFO L764 garLoopResultBuilder]: Registering result SAFE for location twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining)
[2021-11-13 18:27:51,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2021-11-13 18:27:52,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2021-11-13 18:27:52,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-11-13 18:27:52,040 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 35) no Hoare annotation was computed.
[2021-11-13 18:27:52,041 INFO L854 garLoopResultBuilder]: At program point L31-2(lines 31 35) the Hoare annotation is: (or (not (<= 1 |twoWay_#in~terminate|)) (and (<= 1 twoWay_~terminate) (= (+ 1 twoWay_~m~0) |twoWay_#in~n|) (= twoWay_~n |twoWay_#in~n|) (<= 0 |twoWay_#in~n|)) (not (<= |twoWay_#in~n| 2147483647)))
[2021-11-13 18:27:52,041 INFO L858 garLoopResultBuilder]: For program point L27(lines 27 37) no Hoare annotation was computed.
[2021-11-13 18:27:52,041 INFO L858 garLoopResultBuilder]: For program point twoWayErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed.
[2021-11-13 18:27:52,041 INFO L858 garLoopResultBuilder]: For program point twoWayFINAL(lines 26 38) no Hoare annotation was computed.
[2021-11-13 18:27:52,042 INFO L858 garLoopResultBuilder]: For program point twoWayErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed.
[2021-11-13 18:27:52,042 INFO L858 garLoopResultBuilder]: For program point twoWayErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed.
[2021-11-13 18:27:52,042 INFO L858 garLoopResultBuilder]: For program point L36(line 36) no Hoare annotation was computed.
[2021-11-13 18:27:52,042 INFO L858 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed.
[2021-11-13 18:27:52,042 INFO L858 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed.
[2021-11-13 18:27:52,042 INFO L858 garLoopResultBuilder]: For program point L36-2(line 36) no Hoare annotation was computed.
[2021-11-13 18:27:52,043 INFO L858 garLoopResultBuilder]: For program point L34-1(line 34) no Hoare annotation was computed.
[2021-11-13 18:27:52,043 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed.
[2021-11-13 18:27:52,043 INFO L858 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed.
[2021-11-13 18:27:52,043 INFO L861 garLoopResultBuilder]: At program point twoWayENTRY(lines 26 38) the Hoare annotation is: true
[2021-11-13 18:27:52,043 INFO L858 garLoopResultBuilder]: For program point twoWayErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed.
[2021-11-13 18:27:52,043 INFO L858 garLoopResultBuilder]: For program point twoWayErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 36) no Hoare annotation was computed.
[2021-11-13 18:27:52,044 INFO L858 garLoopResultBuilder]: For program point twoWayErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed.
[2021-11-13 18:27:52,044 INFO L858 garLoopResultBuilder]: For program point twoWayEXIT(lines 26 38) no Hoare annotation was computed.
[2021-11-13 18:27:52,044 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-11-13 18:27:52,044 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2021-11-13 18:27:52,044 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2021-11-13 18:27:52,044 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-11-13 18:27:52,045 INFO L854 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 2147483647)
[2021-11-13 18:27:52,045 INFO L858 garLoopResultBuilder]: For program point L48-1(line 48) no Hoare annotation was computed.
[2021-11-13 18:27:52,045 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 46) no Hoare annotation was computed.
[2021-11-13 18:27:52,045 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed.
[2021-11-13 18:27:52,045 INFO L854 garLoopResultBuilder]: At program point L40(lines 40 50) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 2147483647)
[2021-11-13 18:27:52,049 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1]
[2021-11-13 18:27:52,050 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 18:27:52,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:27:52 BoogieIcfgContainer
[2021-11-13 18:27:52,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 18:27:52,064 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 18:27:52,064 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 18:27:52,064 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 18:27:52,064 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:27:31" (3/4) ...
[2021-11-13 18:27:52,067 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-11-13 18:27:52,073 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure twoWay
[2021-11-13 18:27:52,078 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges
[2021-11-13 18:27:52,078 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2021-11-13 18:27:52,078 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-11-13 18:27:52,105 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/witness.graphml
[2021-11-13 18:27:52,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 18:27:52,106 INFO L158 Benchmark]: Toolchain (without parser) took 21182.85ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 47.6MB in the beginning and 37.3MB in the end (delta: 10.2MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB.
[2021-11-13 18:27:52,106 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:27:52,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.57ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 47.4MB in the beginning and 80.1MB in the end (delta: -32.7MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB.
[2021-11-13 18:27:52,107 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.54ms. Allocated memory is still 104.9MB. Free memory was 80.1MB in the beginning and 79.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:27:52,108 INFO L158 Benchmark]: Boogie Preprocessor took 17.48ms. Allocated memory is still 104.9MB. Free memory was 78.6MB in the beginning and 78.1MB in the end (delta: 543.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:27:52,108 INFO L158 Benchmark]: RCFGBuilder took 304.92ms. Allocated memory is still 104.9MB. Free memory was 78.1MB in the beginning and 68.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 18:27:52,109 INFO L158 Benchmark]: TraceAbstraction took 20536.37ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 68.1MB in the beginning and 39.4MB in the end (delta: 28.7MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB.
[2021-11-13 18:27:52,109 INFO L158 Benchmark]: Witness Printer took 41.90ms. Allocated memory is still 125.8MB. Free memory was 39.4MB in the beginning and 37.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:27:52,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 243.57ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 47.4MB in the beginning and 80.1MB in the end (delta: -32.7MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 30.54ms. Allocated memory is still 104.9MB. Free memory was 80.1MB in the beginning and 79.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 17.48ms. Allocated memory is still 104.9MB. Free memory was 78.6MB in the beginning and 78.1MB in the end (delta: 543.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 304.92ms. Allocated memory is still 104.9MB. Free memory was 78.1MB in the beginning and 68.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* TraceAbstraction took 20536.37ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 68.1MB in the beginning and 39.4MB in the end (delta: 28.7MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB.
* Witness Printer took 41.90ms. Allocated memory is still 125.8MB. Free memory was 39.4MB in the beginning and 37.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 32]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 32]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 34]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 34]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 36]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- PositiveResult [Line: 36]: integer overflow can never occur
For all program executions holds that integer overflow can never occur at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 20.5s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 415 SdHoareTripleChecker+Valid, 693.66ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 412 mSDsluCounter, 740 SdHoareTripleChecker+Invalid, 577.03ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 79 IncrementalHoareTripleChecker+Unchecked, 599 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 764 IncrementalHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 141 mSDtfsCounter, 764 mSolverCounterSat, 19.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 395 GetRequests, 247 SyntacticMatches, 4 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=1, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 24 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 31 HoareAnnotationTreeSize, 10 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 15.9s InterpolantComputationTime, 255 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 327 ConstructedInterpolants, 17 QuantifiedInterpolants, 1383 SizeOfPredicates, 35 NumberOfNonLiveVariables, 593 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 214/317 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
6 specifications checked. All of them hold
- InvariantResult [Line: 40]: Loop Invariant
Derived loop invariant: x <= 2147483647
RESULT: Ultimate proved your program to be correct!
[2021-11-13 18:27:52,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe07c714-6f8d-4202-8a4e-7974007e3fab/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE