./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.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_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/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_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/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_e549b54f-8931-405b-be96-c3e6bbfbb817/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 ae72b099a35703f32ba85203e91200ae10b1da6ed5d35f42555b4b072fd32a75 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 19:22:48,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:22:48,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:22:48,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:22:48,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:22:48,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:22:48,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:22:48,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:22:48,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:22:48,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:22:48,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:22:48,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:22:48,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:22:48,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:22:48,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:22:48,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:22:48,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:22:48,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:22:48,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:22:48,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:22:48,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:22:48,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:22:48,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:22:48,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:22:48,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:22:48,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:22:48,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:22:48,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:22:48,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:22:48,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:22:48,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:22:48,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:22:48,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:22:48,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:22:48,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:22:48,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:22:48,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:22:48,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:22:48,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:22:48,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:22:48,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:22:48,586 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-21 19:22:48,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:22:48,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:22:48,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:22:48,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:22:48,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:22:48,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:22:48,663 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:22:48,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:22:48,664 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:22:48,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:22:48,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:22:48,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:22:48,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:22:48,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:22:48,667 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-21 19:22:48,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:22:48,668 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:22:48,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:22:48,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:22:48,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:22:48,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:22:48,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:22:48,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:22:48,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:22:48,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:22:48,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:22:48,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:22:48,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:22:48,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:22:48,672 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_e549b54f-8931-405b-be96-c3e6bbfbb817/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae72b099a35703f32ba85203e91200ae10b1da6ed5d35f42555b4b072fd32a75 [2021-10-21 19:22:49,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:22:49,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:22:49,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:22:49,120 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:22:49,121 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:22:49,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2021-10-21 19:22:49,202 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/data/c137fd81b/51e8e32ea6e140cc90f33b375687961b/FLAG76b4ae582 [2021-10-21 19:22:49,735 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:22:49,736 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2021-10-21 19:22:49,750 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/data/c137fd81b/51e8e32ea6e140cc90f33b375687961b/FLAG76b4ae582 [2021-10-21 19:22:50,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/data/c137fd81b/51e8e32ea6e140cc90f33b375687961b [2021-10-21 19:22:50,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:22:50,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:22:50,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:22:50,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:22:50,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:22:50,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:22:50" (1/1) ... [2021-10-21 19:22:50,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d135250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:50, skipping insertion in model container [2021-10-21 19:22:50,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:22:50" (1/1) ... [2021-10-21 19:22:50,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:22:50,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:22:50,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:22:50,353 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:22:50,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:22:50,385 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:22:50,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:50 WrapperNode [2021-10-21 19:22:50,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:22:50,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:22:50,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:22:50,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:22:50,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:50" (1/1) ... [2021-10-21 19:22:50,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:50" (1/1) ... [2021-10-21 19:22:50,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:22:50,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:22:50,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:22:50,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:22:50,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:50" (1/1) ... [2021-10-21 19:22:50,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:50" (1/1) ... [2021-10-21 19:22:50,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:50" (1/1) ... [2021-10-21 19:22:50,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:50" (1/1) ... [2021-10-21 19:22:50,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:50" (1/1) ... [2021-10-21 19:22:50,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:50" (1/1) ... [2021-10-21 19:22:50,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:50" (1/1) ... [2021-10-21 19:22:50,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:22:50,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:22:50,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:22:50,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:22:50,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:50" (1/1) ... [2021-10-21 19:22:50,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:22:50,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:22:50,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:22:50,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:22:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-21 19:22:50,555 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-21 19:22:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-21 19:22:50,555 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-21 19:22:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:22:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:22:50,874 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:22:50,888 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 19:22:50,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:22:50 BoogieIcfgContainer [2021-10-21 19:22:50,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:22:50,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:22:50,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:22:50,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:22:50,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:22:50" (1/3) ... [2021-10-21 19:22:50,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e161684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:22:50, skipping insertion in model container [2021-10-21 19:22:50,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:22:50" (2/3) ... [2021-10-21 19:22:50,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e161684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:22:50, skipping insertion in model container [2021-10-21 19:22:50,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:22:50" (3/3) ... [2021-10-21 19:22:50,903 INFO L111 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1b.c [2021-10-21 19:22:50,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:22:50,919 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-21 19:22:50,994 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:22:51,002 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 19:22:51,003 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-21 19:22:51,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 24 states have (on average 1.5) internal successors, (36), 34 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-21 19:22:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 19:22:51,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:51,030 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 19:22:51,031 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 19:22:51,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:51,052 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2021-10-21 19:22:51,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:51,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349971640] [2021-10-21 19:22:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:51,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:51,294 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 19:22:51,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:51,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349971640] [2021-10-21 19:22:51,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349971640] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:51,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:51,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:22:51,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014552337] [2021-10-21 19:22:51,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:22:51,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:51,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:22:51,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:51,337 INFO L87 Difference]: Start difference. First operand has 42 states, 24 states have (on average 1.5) internal successors, (36), 34 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 19:22:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:51,537 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2021-10-21 19:22:51,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:22:51,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2021-10-21 19:22:51,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:51,553 INFO L225 Difference]: With dead ends: 64 [2021-10-21 19:22:51,553 INFO L226 Difference]: Without dead ends: 56 [2021-10-21 19:22:51,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:22:51,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-21 19:22:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-10-21 19:22:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-21 19:22:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2021-10-21 19:22:51,632 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2021-10-21 19:22:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:51,633 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-10-21 19:22:51,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 19:22:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2021-10-21 19:22:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 19:22:51,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:51,635 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:22:51,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:22:51,638 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 19:22:51,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:51,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2021-10-21 19:22:51,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:51,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966349593] [2021-10-21 19:22:51,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:51,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:51,710 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 19:22:51,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:51,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966349593] [2021-10-21 19:22:51,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966349593] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:51,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:51,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:22:51,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217816143] [2021-10-21 19:22:51,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:22:51,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:51,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:22:51,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:22:51,719 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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 19:22:51,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:51,773 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2021-10-21 19:22:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:22:51,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 19:22:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:51,779 INFO L225 Difference]: With dead ends: 52 [2021-10-21 19:22:51,779 INFO L226 Difference]: Without dead ends: 50 [2021-10-21 19:22:51,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:22:51,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-21 19:22:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-10-21 19:22:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 38 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-10-21 19:22:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-10-21 19:22:51,807 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2021-10-21 19:22:51,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:51,809 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-10-21 19:22:51,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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 19:22:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-10-21 19:22:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:22:51,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:51,812 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:51,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:22:51,813 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 19:22:51,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:51,816 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2021-10-21 19:22:51,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:51,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785303463] [2021-10-21 19:22:51,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:51,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:22:52,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:52,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785303463] [2021-10-21 19:22:52,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785303463] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:52,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:52,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:22:52,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959195251] [2021-10-21 19:22:52,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:22:52,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:22:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:22:52,017 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 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 19:22:52,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:52,312 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-10-21 19:22:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:22:52,316 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 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 13 [2021-10-21 19:22:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:52,317 INFO L225 Difference]: With dead ends: 66 [2021-10-21 19:22:52,318 INFO L226 Difference]: Without dead ends: 63 [2021-10-21 19:22:52,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:22:52,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-21 19:22:52,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2021-10-21 19:22:52,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 46 states have internal predecessors, (53), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-21 19:22:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2021-10-21 19:22:52,331 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2021-10-21 19:22:52,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:52,332 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2021-10-21 19:22:52,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 5 states have internal predecessors, (10), 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 19:22:52,332 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2021-10-21 19:22:52,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:22:52,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:52,334 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:52,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:22:52,335 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 19:22:52,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:52,336 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2021-10-21 19:22:52,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:52,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004992649] [2021-10-21 19:22:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:52,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:22:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:22:52,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:52,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004992649] [2021-10-21 19:22:52,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004992649] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:52,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:52,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:22:52,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364727245] [2021-10-21 19:22:52,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:22:52,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:52,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:22:52,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:22:52,397 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:22:52,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:52,411 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2021-10-21 19:22:52,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:22:52,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-21 19:22:52,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:52,413 INFO L225 Difference]: With dead ends: 61 [2021-10-21 19:22:52,413 INFO L226 Difference]: Without dead ends: 60 [2021-10-21 19:22:52,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 19:22:52,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-21 19:22:52,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-10-21 19:22:52,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 45 states have internal predecessors, (52), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-21 19:22:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-10-21 19:22:52,427 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2021-10-21 19:22:52,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:52,427 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-10-21 19:22:52,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:22:52,428 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-10-21 19:22:52,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 19:22:52,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:52,429 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:52,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:22:52,430 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 19:22:52,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:52,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2021-10-21 19:22:52,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:52,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079714663] [2021-10-21 19:22:52,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:52,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-21 19:22:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-21 19:22:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:22:52,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:52,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079714663] [2021-10-21 19:22:52,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079714663] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:52,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:52,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:22:52,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499014585] [2021-10-21 19:22:52,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:22:52,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:22:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:52,558 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:22:52,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:52,635 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2021-10-21 19:22:52,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:22:52,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-10-21 19:22:52,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:52,643 INFO L225 Difference]: With dead ends: 93 [2021-10-21 19:22:52,643 INFO L226 Difference]: Without dead ends: 92 [2021-10-21 19:22:52,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:22:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-21 19:22:52,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2021-10-21 19:22:52,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 59 states have internal predecessors, (68), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (20), 14 states have call predecessors, (20), 11 states have call successors, (20) [2021-10-21 19:22:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2021-10-21 19:22:52,683 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2021-10-21 19:22:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:52,684 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2021-10-21 19:22:52,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:22:52,685 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2021-10-21 19:22:52,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:22:52,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:52,688 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:52,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:22:52,689 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 19:22:52,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:52,691 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2021-10-21 19:22:52,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:52,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273091932] [2021-10-21 19:22:52,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:52,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:52,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-21 19:22:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:52,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-21 19:22:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:22:52,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:52,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273091932] [2021-10-21 19:22:52,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273091932] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:52,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:52,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:22:52,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798069571] [2021-10-21 19:22:52,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:22:52,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:52,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:22:52,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:22:52,843 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:22:52,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:52,903 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2021-10-21 19:22:52,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:22:52,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-10-21 19:22:52,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:52,906 INFO L225 Difference]: With dead ends: 93 [2021-10-21 19:22:52,906 INFO L226 Difference]: Without dead ends: 89 [2021-10-21 19:22:52,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:22:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-21 19:22:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2021-10-21 19:22:52,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 60 states have internal predecessors, (68), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2021-10-21 19:22:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2021-10-21 19:22:52,919 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2021-10-21 19:22:52,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:52,920 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2021-10-21 19:22:52,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:22:52,920 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2021-10-21 19:22:52,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 19:22:52,922 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:52,922 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:52,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:22:52,923 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 19:22:52,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:52,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2082036524, now seen corresponding path program 1 times [2021-10-21 19:22:52,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:52,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975766974] [2021-10-21 19:22:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:52,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:52,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-21 19:22:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:52,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-10-21 19:22:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:53,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-10-21 19:22:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:53,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 19:22:53,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:53,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975766974] [2021-10-21 19:22:53,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975766974] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:22:53,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918448075] [2021-10-21 19:22:53,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:53,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:22:53,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:22:53,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:22:53,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:22:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:53,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:22:53,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:22:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:22:53,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918448075] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:22:53,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:22:53,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2021-10-21 19:22:53,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415849264] [2021-10-21 19:22:53,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:22:53,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:53,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:22:53,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:22:53,432 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-21 19:22:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:53,652 INFO L93 Difference]: Finished difference Result 157 states and 204 transitions. [2021-10-21 19:22:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:22:53,653 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 32 [2021-10-21 19:22:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:53,654 INFO L225 Difference]: With dead ends: 157 [2021-10-21 19:22:53,655 INFO L226 Difference]: Without dead ends: 82 [2021-10-21 19:22:53,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:22:53,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-21 19:22:53,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2021-10-21 19:22:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 60 states have internal predecessors, (66), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (15), 12 states have call predecessors, (15), 10 states have call successors, (15) [2021-10-21 19:22:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2021-10-21 19:22:53,694 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 32 [2021-10-21 19:22:53,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:53,696 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2021-10-21 19:22:53,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-10-21 19:22:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2021-10-21 19:22:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-21 19:22:53,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:53,704 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:53,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:22:53,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:22:53,921 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 19:22:53,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:53,922 INFO L82 PathProgramCache]: Analyzing trace with hash 407346927, now seen corresponding path program 1 times [2021-10-21 19:22:53,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:53,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763567250] [2021-10-21 19:22:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:53,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:22:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 19:22:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-21 19:22:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-10-21 19:22:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 19:22:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-21 19:22:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-21 19:22:54,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:54,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763567250] [2021-10-21 19:22:54,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763567250] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:54,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:54,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:22:54,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875279336] [2021-10-21 19:22:54,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:22:54,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:54,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:22:54,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:22:54,206 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-21 19:22:54,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:54,285 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2021-10-21 19:22:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:22:54,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 60 [2021-10-21 19:22:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:54,295 INFO L225 Difference]: With dead ends: 78 [2021-10-21 19:22:54,295 INFO L226 Difference]: Without dead ends: 76 [2021-10-21 19:22:54,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:22:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-21 19:22:54,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-21 19:22:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 58 states have internal predecessors, (62), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (15), 12 states have call predecessors, (15), 10 states have call successors, (15) [2021-10-21 19:22:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2021-10-21 19:22:54,319 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 60 [2021-10-21 19:22:54,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:54,324 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2021-10-21 19:22:54,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-21 19:22:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2021-10-21 19:22:54,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-21 19:22:54,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:22:54,332 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:22:54,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:22:54,333 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2021-10-21 19:22:54,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:22:54,334 INFO L82 PathProgramCache]: Analyzing trace with hash -319407487, now seen corresponding path program 1 times [2021-10-21 19:22:54,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:22:54,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693314680] [2021-10-21 19:22:54,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:22:54,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:22:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-10-21 19:22:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 19:22:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-21 19:22:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-10-21 19:22:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 19:22:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-21 19:22:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:22:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-10-21 19:22:54,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:22:54,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693314680] [2021-10-21 19:22:54,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693314680] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:22:54,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:22:54,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:22:54,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387181924] [2021-10-21 19:22:54,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:22:54,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:22:54,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:22:54,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:22:54,539 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-21 19:22:54,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:22:54,591 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2021-10-21 19:22:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:22:54,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 69 [2021-10-21 19:22:54,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:22:54,594 INFO L225 Difference]: With dead ends: 76 [2021-10-21 19:22:54,594 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:22:54,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:22:54,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:22:54,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:22:54,597 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 19:22:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:22:54,597 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2021-10-21 19:22:54,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:22:54,598 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:22:54,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-21 19:22:54,598 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:22:54,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:22:54,601 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:22:54,602 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:22:54,602 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:22:54,603 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:22:54,603 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:22:54,603 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:22:54,603 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:22:54,604 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:22:54,604 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:22:54,604 INFO L764 garLoopResultBuilder]: Registering result SAFE for location gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:22:54,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:22:54,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:22:54,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,683 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:22:54,870 INFO L857 garLoopResultBuilder]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2021-10-21 19:22:54,871 INFO L853 garLoopResultBuilder]: At program point L14(line 14) the Hoare annotation is: (and (not (<= (+ |f_#in~x| 1) 0)) (or (and (<= |f_#in~x| f_~x) (<= f_~x 2147483645) (<= 1 f_~x)) (not (<= |f_#in~x| 2147483645)))) [2021-10-21 19:22:54,871 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-21 19:22:54,871 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-21 19:22:54,871 INFO L857 garLoopResultBuilder]: For program point L14-2(line 14) no Hoare annotation was computed. [2021-10-21 19:22:54,871 INFO L857 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2021-10-21 19:22:54,872 INFO L853 garLoopResultBuilder]: At program point L14-4(line 14) the Hoare annotation is: (and (or (and (<= 0 |f_#t~ret0|) (<= |f_#in~x| f_~x) (<= f_~x 2147483645) (<= 1 f_~x) (<= |f_#t~ret0| 0)) (not (<= |f_#in~x| 2147483645))) (not (<= (+ |f_#in~x| 1) 0))) [2021-10-21 19:22:54,872 INFO L857 garLoopResultBuilder]: For program point L14-5(line 14) no Hoare annotation was computed. [2021-10-21 19:22:54,872 INFO L857 garLoopResultBuilder]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-21 19:22:54,872 INFO L857 garLoopResultBuilder]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-21 19:22:54,872 INFO L857 garLoopResultBuilder]: For program point L14-6(line 14) no Hoare annotation was computed. [2021-10-21 19:22:54,873 INFO L857 garLoopResultBuilder]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2021-10-21 19:22:54,873 INFO L857 garLoopResultBuilder]: For program point L14-7(line 14) no Hoare annotation was computed. [2021-10-21 19:22:54,873 INFO L860 garLoopResultBuilder]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2021-10-21 19:22:54,873 INFO L857 garLoopResultBuilder]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-21 19:22:54,873 INFO L857 garLoopResultBuilder]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-21 19:22:54,873 INFO L857 garLoopResultBuilder]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2021-10-21 19:22:54,873 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,874 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 20) no Hoare annotation was computed. [2021-10-21 19:22:54,874 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,874 INFO L853 garLoopResultBuilder]: At program point L20-2(line 20) the Hoare annotation is: (or (not (<= |g_#in~x| 2147483647)) (and (= |g_#in~x| g_~x) (<= 1 g_~x))) [2021-10-21 19:22:54,874 INFO L857 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,874 INFO L857 garLoopResultBuilder]: For program point L20-4(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,874 INFO L857 garLoopResultBuilder]: For program point L20-5(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,874 INFO L853 garLoopResultBuilder]: At program point L20-6(line 20) the Hoare annotation is: (or (not (<= |g_#in~x| 2147483647)) (and (= |g_#in~x| g_~x) (<= 1 g_~x) (<= |g_#t~ret2| 0) (<= 0 |g_#t~ret2|))) [2021-10-21 19:22:54,875 INFO L857 garLoopResultBuilder]: For program point L20-7(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,875 INFO L857 garLoopResultBuilder]: For program point L20-8(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,875 INFO L857 garLoopResultBuilder]: For program point L20-9(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,875 INFO L857 garLoopResultBuilder]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,875 INFO L857 garLoopResultBuilder]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2021-10-21 19:22:54,875 INFO L857 garLoopResultBuilder]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,876 INFO L860 garLoopResultBuilder]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2021-10-21 19:22:54,876 INFO L857 garLoopResultBuilder]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,876 INFO L857 garLoopResultBuilder]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,876 INFO L857 garLoopResultBuilder]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,876 INFO L857 garLoopResultBuilder]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-21 19:22:54,876 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:22:54,876 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:22:54,877 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:22:54,877 INFO L853 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-21 19:22:54,877 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-21 19:22:54,877 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 27) no Hoare annotation was computed. [2021-10-21 19:22:54,882 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:22:54,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:22:54 BoogieIcfgContainer [2021-10-21 19:22:54,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:22:54,887 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:22:54,887 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:22:54,887 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:22:54,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:22:50" (3/4) ... [2021-10-21 19:22:54,891 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:22:54,899 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2021-10-21 19:22:54,899 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2021-10-21 19:22:54,906 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-21 19:22:54,906 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-21 19:22:54,947 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:22:54,947 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:22:54,949 INFO L168 Benchmark]: Toolchain (without parser) took 4835.66 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 67.6 MB in the beginning and 68.1 MB in the end (delta: -495.9 kB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:54,950 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 62.5 MB in the beginning and 62.4 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:22:54,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.49 ms. Allocated memory is still 88.1 MB. Free memory was 67.5 MB in the beginning and 65.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:54,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.75 ms. Allocated memory is still 88.1 MB. Free memory was 65.2 MB in the beginning and 64.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:22:54,951 INFO L168 Benchmark]: Boogie Preprocessor took 20.31 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 63.2 MB in the end (delta: 799.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:54,951 INFO L168 Benchmark]: RCFGBuilder took 447.67 ms. Allocated memory is still 88.1 MB. Free memory was 63.2 MB in the beginning and 54.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:54,952 INFO L168 Benchmark]: TraceAbstraction took 3992.81 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 53.6 MB in the beginning and 71.2 MB in the end (delta: -17.6 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:54,952 INFO L168 Benchmark]: Witness Printer took 60.71 ms. Allocated memory is still 107.0 MB. Free memory was 71.2 MB in the beginning and 68.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:22:54,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 88.1 MB. Free memory was 62.5 MB in the beginning and 62.4 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.49 ms. Allocated memory is still 88.1 MB. Free memory was 67.5 MB in the beginning and 65.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.75 ms. Allocated memory is still 88.1 MB. Free memory was 65.2 MB in the beginning and 64.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.31 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 63.2 MB in the end (delta: 799.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 447.67 ms. Allocated memory is still 88.1 MB. Free memory was 63.2 MB in the beginning and 54.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3992.81 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 53.6 MB in the beginning and 71.2 MB in the end (delta: -17.6 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. * Witness Printer took 60.71 ms. Allocated memory is still 107.0 MB. Free memory was 71.2 MB in the beginning and 68.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 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: 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: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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 3 procedures, 42 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 3890.7ms, OverallIterations: 9, TraceHistogramMax: 6, EmptinessCheckTime: 31.8ms, AutomataDifference: 1162.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 265.3ms, InitialAbstractionConstructionTime: 16.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 275 SDtfs, 209 SDslu, 843 SDs, 0 SdLazy, 474 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 501.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 434.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=5, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 211.5ms AutomataMinimizationTime, 9 MinimizatonAttempts, 43 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 64 PreInvPairs, 76 NumberOfFragments, 85 HoareAnnotationTreeSize, 64 FomulaSimplifications, 69 FormulaSimplificationTreeSizeReduction, 132.9ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 72 FormulaSimplificationTreeSizeReductionInter, 119.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 32.2ms SsaConstructionTime, 235.2ms SatisfiabilityAnalysisTime, 1317.3ms InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 267 ConstructedInterpolants, 0 QuantifiedInterpolants, 557 SizeOfPredicates, 2 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 167/171 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 19:22:55,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e549b54f-8931-405b-be96-c3e6bbfbb817/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...