./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be --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 702a5cb4e98140bb9dbcfd0fb89e24e07deb7e8ce40ea61b05e70376d58bbad7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:20:44,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:20:44,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:20:44,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:20:44,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:20:44,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:20:44,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:20:44,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:20:44,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:20:45,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:20:45,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:20:45,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:20:45,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:20:45,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:20:45,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:20:45,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:20:45,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:20:45,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:20:45,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:20:45,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:20:45,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:20:45,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:20:45,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:20:45,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:20:45,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:20:45,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:20:45,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:20:45,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:20:45,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:20:45,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:20:45,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:20:45,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:20:45,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:20:45,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:20:45,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:20:45,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:20:45,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:20:45,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:20:45,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:20:45,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:20:45,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:20:45,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-21 20:20:45,116 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:20:45,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:20:45,118 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:20:45,118 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:20:45,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:20:45,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:20:45,120 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:20:45,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:20:45,121 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:20:45,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:20:45,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:20:45,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:20:45,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:20:45,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:20:45,123 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-21 20:20:45,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:20:45,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:20:45,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:20:45,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:20:45,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:20:45,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:20:45,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:20:45,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:20:45,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:20:45,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:20:45,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:20:45,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:20:45,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:20:45,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:20:45,129 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_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 702a5cb4e98140bb9dbcfd0fb89e24e07deb7e8ce40ea61b05e70376d58bbad7 [2021-10-21 20:20:45,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:20:45,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:20:45,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:20:45,427 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:20:45,428 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:20:45,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2021-10-21 20:20:45,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/data/fd55c780f/40f0a3f42e1348c1b18b06c09aca6c7f/FLAGbb1d253e4 [2021-10-21 20:20:45,941 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:20:45,941 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2021-10-21 20:20:45,948 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/data/fd55c780f/40f0a3f42e1348c1b18b06c09aca6c7f/FLAGbb1d253e4 [2021-10-21 20:20:46,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/data/fd55c780f/40f0a3f42e1348c1b18b06c09aca6c7f [2021-10-21 20:20:46,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:20:46,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:20:46,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:20:46,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:20:46,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:20:46,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:20:46" (1/1) ... [2021-10-21 20:20:46,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48eeb09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:46, skipping insertion in model container [2021-10-21 20:20:46,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:20:46" (1/1) ... [2021-10-21 20:20:46,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:20:46,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:20:46,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:20:46,532 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:20:46,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:20:46,584 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:20:46,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:46 WrapperNode [2021-10-21 20:20:46,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:20:46,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:20:46,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:20:46,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:20:46,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:46" (1/1) ... [2021-10-21 20:20:46,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:46" (1/1) ... [2021-10-21 20:20:46,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:20:46,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:20:46,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:20:46,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:20:46,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:46" (1/1) ... [2021-10-21 20:20:46,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:46" (1/1) ... [2021-10-21 20:20:46,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:46" (1/1) ... [2021-10-21 20:20:46,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:46" (1/1) ... [2021-10-21 20:20:46,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:46" (1/1) ... [2021-10-21 20:20:46,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:46" (1/1) ... [2021-10-21 20:20:46,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:46" (1/1) ... [2021-10-21 20:20:46,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:20:46,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:20:46,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:20:46,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:20:46,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:46" (1/1) ... [2021-10-21 20:20:46,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:20:46,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:20:46,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:20:46,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:20:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure p [2021-10-21 20:20:46,740 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2021-10-21 20:20:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:20:46,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:20:46,966 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:20:46,967 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 20:20:46,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:20:46 BoogieIcfgContainer [2021-10-21 20:20:46,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:20:46,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:20:46,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:20:46,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:20:46,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:20:46" (1/3) ... [2021-10-21 20:20:46,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ea0314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:20:46, skipping insertion in model container [2021-10-21 20:20:46,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:20:46" (2/3) ... [2021-10-21 20:20:46,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ea0314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:20:46, skipping insertion in model container [2021-10-21 20:20:46,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:20:46" (3/3) ... [2021-10-21 20:20:46,984 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2021-10-21 20:20:46,991 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:20:46,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-21 20:20:47,045 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:20:47,052 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 [2021-10-21 20:20:47,053 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 20:20:47,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 20:20:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:20:47,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:47,076 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:20:47,076 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-21 20:20:47,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:47,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1571177437, now seen corresponding path program 1 times [2021-10-21 20:20:47,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:20:47,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254591118] [2021-10-21 20:20:47,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:47,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:20:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:47,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:20:47,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254591118] [2021-10-21 20:20:47,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254591118] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:47,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:47,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:20:47,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402749491] [2021-10-21 20:20:47,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:20:47,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:20:47,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:20:47,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:20:47,294 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-21 20:20:47,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:47,452 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2021-10-21 20:20:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:20:47,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2021-10-21 20:20:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:47,479 INFO L225 Difference]: With dead ends: 44 [2021-10-21 20:20:47,479 INFO L226 Difference]: Without dead ends: 28 [2021-10-21 20:20:47,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:20:47,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-21 20:20:47,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2021-10-21 20:20:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.5) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-21 20:20:47,525 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2021-10-21 20:20:47,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:47,526 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-21 20:20:47,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-21 20:20:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-21 20:20:47,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 20:20:47,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:47,528 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:47,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:20:47,529 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-21 20:20:47,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:47,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1461860328, now seen corresponding path program 1 times [2021-10-21 20:20:47,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:20:47,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536101935] [2021-10-21 20:20:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:47,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:20:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:47,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:20:47,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536101935] [2021-10-21 20:20:47,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536101935] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:47,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:47,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:20:47,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379787698] [2021-10-21 20:20:47,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:20:47,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:20:47,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:20:47,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:20:47,573 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-21 20:20:47,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:47,585 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-10-21 20:20:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:20:47,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2021-10-21 20:20:47,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:47,589 INFO L225 Difference]: With dead ends: 19 [2021-10-21 20:20:47,599 INFO L226 Difference]: Without dead ends: 18 [2021-10-21 20:20:47,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:20:47,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-21 20:20:47,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-21 20:20:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:47,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-10-21 20:20:47,622 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 7 [2021-10-21 20:20:47,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:47,622 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-21 20:20:47,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-21 20:20:47,623 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-10-21 20:20:47,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 20:20:47,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:47,624 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:47,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:20:47,625 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-21 20:20:47,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:47,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1461867311, now seen corresponding path program 1 times [2021-10-21 20:20:47,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:20:47,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665636753] [2021-10-21 20:20:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:47,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:20:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:47,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:20:47,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665636753] [2021-10-21 20:20:47,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665636753] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:47,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:47,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:20:47,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785898548] [2021-10-21 20:20:47,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:20:47,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:20:47,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:20:47,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:20:47,728 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-21 20:20:47,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:47,824 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-10-21 20:20:47,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:20:47,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2021-10-21 20:20:47,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:47,826 INFO L225 Difference]: With dead ends: 30 [2021-10-21 20:20:47,826 INFO L226 Difference]: Without dead ends: 29 [2021-10-21 20:20:47,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:20:47,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-21 20:20:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-10-21 20:20:47,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:47,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-10-21 20:20:47,835 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2021-10-21 20:20:47,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:47,835 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-21 20:20:47,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-10-21 20:20:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-10-21 20:20:47,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:20:47,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:47,837 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:47,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:20:47,837 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-21 20:20:47,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:47,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1926753568, now seen corresponding path program 1 times [2021-10-21 20:20:47,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:20:47,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067731330] [2021-10-21 20:20:47,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:47,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:20:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:47,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:20:47,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067731330] [2021-10-21 20:20:47,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067731330] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:20:47,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:20:47,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:20:47,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917154160] [2021-10-21 20:20:47,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:20:47,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:20:47,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:20:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:20:47,878 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-21 20:20:47,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:47,889 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-10-21 20:20:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:20:47,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2021-10-21 20:20:47,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:47,891 INFO L225 Difference]: With dead ends: 24 [2021-10-21 20:20:47,892 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 20:20:47,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:20:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 20:20:47,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-21 20:20:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-21 20:20:47,899 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2021-10-21 20:20:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:47,899 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-21 20:20:47,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-21 20:20:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-21 20:20:47,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:20:47,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:47,901 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:47,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:20:47,902 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-21 20:20:47,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:47,903 INFO L82 PathProgramCache]: Analyzing trace with hash 168982822, now seen corresponding path program 1 times [2021-10-21 20:20:47,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:20:47,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451910289] [2021-10-21 20:20:47,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:47,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:20:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:48,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:20:48,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451910289] [2021-10-21 20:20:48,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451910289] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:20:48,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150092033] [2021-10-21 20:20:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:48,023 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:20:48,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:20:48,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:20:48,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:20:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:48,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:20:48,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:48,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150092033] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:20:48,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:20:48,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-21 20:20:48,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329381987] [2021-10-21 20:20:48,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:20:48,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:20:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:20:48,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:20:48,246 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:48,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:48,392 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-10-21 20:20:48,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:20:48,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-21 20:20:48,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:48,395 INFO L225 Difference]: With dead ends: 45 [2021-10-21 20:20:48,396 INFO L226 Difference]: Without dead ends: 43 [2021-10-21 20:20:48,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:20:48,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-21 20:20:48,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2021-10-21 20:20:48,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 26 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:48,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-10-21 20:20:48,417 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2021-10-21 20:20:48,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:48,418 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-10-21 20:20:48,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:48,418 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-10-21 20:20:48,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:20:48,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:48,419 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:48,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:48,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:20:48,620 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-21 20:20:48,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:48,621 INFO L82 PathProgramCache]: Analyzing trace with hash 943507206, now seen corresponding path program 1 times [2021-10-21 20:20:48,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:20:48,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880430595] [2021-10-21 20:20:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:48,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:20:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:48,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:20:48,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880430595] [2021-10-21 20:20:48,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880430595] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:20:48,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227517031] [2021-10-21 20:20:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:48,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:20:48,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:20:48,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:20:48,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:20:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:48,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:20:48,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:48,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227517031] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:20:48,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:20:48,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-21 20:20:48,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823639348] [2021-10-21 20:20:48,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:20:48,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:20:48,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:20:48,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:20:48,871 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:48,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:48,997 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2021-10-21 20:20:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:20:49,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 20:20:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:49,001 INFO L225 Difference]: With dead ends: 67 [2021-10-21 20:20:49,004 INFO L226 Difference]: Without dead ends: 65 [2021-10-21 20:20:49,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:20:49,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-21 20:20:49,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 33. [2021-10-21 20:20:49,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 4 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-10-21 20:20:49,020 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12 [2021-10-21 20:20:49,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:49,021 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-10-21 20:20:49,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-10-21 20:20:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:20:49,023 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:49,023 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:49,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:49,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:20:49,227 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-21 20:20:49,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:49,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1019019044, now seen corresponding path program 1 times [2021-10-21 20:20:49,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:20:49,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333075972] [2021-10-21 20:20:49,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:49,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:20:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:49,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:20:49,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333075972] [2021-10-21 20:20:49,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333075972] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:20:49,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940196092] [2021-10-21 20:20:49,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:49,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:20:49,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:20:49,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:20:49,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:20:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:49,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:20:49,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:49,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940196092] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:20:49,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:20:49,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-21 20:20:49,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285822404] [2021-10-21 20:20:49,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:20:49,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:20:49,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:20:49,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:20:49,393 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:49,485 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2021-10-21 20:20:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:20:49,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 20:20:49,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:49,486 INFO L225 Difference]: With dead ends: 53 [2021-10-21 20:20:49,486 INFO L226 Difference]: Without dead ends: 52 [2021-10-21 20:20:49,487 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 50.7ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:20:49,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-21 20:20:49,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2021-10-21 20:20:49,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.3) internal successors, (39), 32 states have internal predecessors, (39), 7 states have call successors, (7), 6 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-10-21 20:20:49,495 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 12 [2021-10-21 20:20:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:49,495 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-10-21 20:20:49,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-10-21 20:20:49,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 20:20:49,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:20:49,497 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:20:49,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:49,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-21 20:20:49,720 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-21 20:20:49,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:20:49,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1112438587, now seen corresponding path program 1 times [2021-10-21 20:20:49,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:20:49,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54198433] [2021-10-21 20:20:49,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:49,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:20:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:49,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:20:49,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54198433] [2021-10-21 20:20:49,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54198433] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:20:49,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308189003] [2021-10-21 20:20:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:20:49,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:20:49,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:20:49,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:20:49,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:20:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:20:49,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:20:49,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:20:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:20:50,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308189003] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:20:50,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:20:50,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-21 20:20:50,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813528913] [2021-10-21 20:20:50,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:20:50,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:20:50,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:20:50,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:20:50,031 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:50,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:20:50,217 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2021-10-21 20:20:50,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 20:20:50,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-21 20:20:50,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:20:50,218 INFO L225 Difference]: With dead ends: 47 [2021-10-21 20:20:50,218 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:20:50,220 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-10-21 20:20:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:20:50,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:20:50,222 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) [2021-10-21 20:20:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:20:50,222 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-10-21 20:20:50,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:20:50,223 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:20:50,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:20:50,223 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:20:50,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:20:50,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:20:50,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:20:50,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:20:50,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:20:50,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:20:50,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:20:50,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:20:50,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:20:50,845 INFO L857 garLoopResultBuilder]: For program point pEXIT(lines 12 22) no Hoare annotation was computed. [2021-10-21 20:20:50,846 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-10-21 20:20:50,846 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 20) no Hoare annotation was computed. [2021-10-21 20:20:50,846 INFO L857 garLoopResultBuilder]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-10-21 20:20:50,846 INFO L860 garLoopResultBuilder]: At program point pENTRY(lines 12 22) the Hoare annotation is: true [2021-10-21 20:20:50,846 INFO L853 garLoopResultBuilder]: At program point L17-2(line 17) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or .cse0 (<= p_~n 2147483646) .cse1 (not (<= |p_#in~n| 2147483646))) (or .cse0 (not (<= |p_#in~n| 2147483647)) .cse1 (and (<= 1 p_~n) (<= p_~r 2147483647) (<= p_~n 2147483647) (<= p_~m 2147483647))))) [2021-10-21 20:20:50,846 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-10-21 20:20:50,847 INFO L857 garLoopResultBuilder]: For program point L17-3(line 17) no Hoare annotation was computed. [2021-10-21 20:20:50,847 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 21) no Hoare annotation was computed. [2021-10-21 20:20:50,847 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-21 20:20:50,847 INFO L857 garLoopResultBuilder]: For program point pErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-10-21 20:20:50,848 INFO L853 garLoopResultBuilder]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse0 (not (<= |p_#in~m| 2147483647))) (.cse1 (not (<= |p_#in~r| 2147483647)))) (and (or .cse0 (<= p_~n 2147483646) .cse1 (not (<= |p_#in~n| 2147483646))) (or (and (<= 1 p_~r) (<= p_~r 2147483647) (<= p_~n 2147483647) (<= p_~m 2147483647)) .cse0 (not (<= |p_#in~n| 2147483647)) .cse1))) [2021-10-21 20:20:50,848 INFO L857 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2021-10-21 20:20:50,848 INFO L857 garLoopResultBuilder]: For program point pErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-10-21 20:20:50,849 INFO L857 garLoopResultBuilder]: For program point pErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-21 20:20:50,849 INFO L857 garLoopResultBuilder]: For program point pErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-21 20:20:50,849 INFO L857 garLoopResultBuilder]: For program point pFINAL(lines 12 22) no Hoare annotation was computed. [2021-10-21 20:20:50,849 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:20:50,849 INFO L853 garLoopResultBuilder]: At program point L31(lines 24 32) the Hoare annotation is: (<= ULTIMATE.start_main_~r~0 2147483647) [2021-10-21 20:20:50,849 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:20:50,849 INFO L853 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647) (<= ULTIMATE.start_main_~r~0 2147483647)) [2021-10-21 20:20:50,849 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:20:50,850 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 30) no Hoare annotation was computed. [2021-10-21 20:20:50,850 INFO L857 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2021-10-21 20:20:50,850 INFO L857 garLoopResultBuilder]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2021-10-21 20:20:50,854 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:20:50,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:20:50 BoogieIcfgContainer [2021-10-21 20:20:50,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:20:50,869 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:20:50,869 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:20:50,869 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:20:50,870 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:20:46" (3/4) ... [2021-10-21 20:20:50,874 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:20:50,880 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure p [2021-10-21 20:20:50,887 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-21 20:20:50,887 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-21 20:20:50,930 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:20:50,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:20:50,932 INFO L168 Benchmark]: Toolchain (without parser) took 4596.75 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 65.2 MB in the beginning and 74.1 MB in the end (delta: -8.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:50,932 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 52.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:20:50,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.57 ms. Allocated memory is still 98.6 MB. Free memory was 65.1 MB in the beginning and 75.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:50,933 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.28 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 74.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:20:50,934 INFO L168 Benchmark]: Boogie Preprocessor took 15.65 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 73.3 MB in the end (delta: 990.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:20:50,934 INFO L168 Benchmark]: RCFGBuilder took 337.49 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 64.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:50,934 INFO L168 Benchmark]: TraceAbstraction took 3892.76 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 64.2 MB in the beginning and 77.2 MB in the end (delta: -13.0 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:50,935 INFO L168 Benchmark]: Witness Printer took 61.16 ms. Allocated memory is still 121.6 MB. Free memory was 77.2 MB in the beginning and 74.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:20:50,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 52.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 249.57 ms. Allocated memory is still 98.6 MB. Free memory was 65.1 MB in the beginning and 75.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.28 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 74.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.65 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 73.3 MB in the end (delta: 990.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 337.49 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 64.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3892.76 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 64.2 MB in the beginning and 77.2 MB in the end (delta: -13.0 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.1 GB. * Witness Printer took 61.16 ms. Allocated memory is still 121.6 MB. Free memory was 77.2 MB in the beginning and 74.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: 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, 25 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3811.5ms, OverallIterations: 8, TraceHistogramMax: 3, EmptinessCheckTime: 14.2ms, AutomataDifference: 945.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 392.7ms, InitialAbstractionConstructionTime: 13.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 133 SDtfs, 199 SDslu, 230 SDs, 0 SdLazy, 349 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 334.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 354.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 98.8ms AutomataMinimizationTime, 8 MinimizatonAttempts, 71 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 29 PreInvPairs, 29 NumberOfFragments, 100 HoareAnnotationTreeSize, 29 FomulaSimplifications, 2219 FormulaSimplificationTreeSizeReduction, 225.7ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 283 FormulaSimplificationTreeSizeReductionInter, 157.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 35.9ms SsaConstructionTime, 171.9ms SatisfiabilityAnalysisTime, 870.2ms InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 348 SizeOfPredicates, 9 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 0/30 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 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: r <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-10-21 20:20:50,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6618f94-a120-43d6-995d-a9fcf22a0e95/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...