./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/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_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/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 32bit --witnessprinter.graph.data.programhash 63d04d5fbdccf2f819812182b810f1f191af60a43091410d38a30548a516f60e .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:21:17,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:21:17,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:21:17,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:21:17,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:21:17,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:21:17,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:21:17,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:21:17,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:21:17,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:21:17,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:21:17,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:21:17,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:21:17,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:21:17,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:21:17,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:21:17,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:21:17,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:21:17,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:21:17,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:21:17,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:21:17,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:21:17,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:21:17,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:21:17,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:21:17,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:21:17,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:21:17,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:21:17,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:21:17,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:21:17,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:21:17,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:21:17,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:21:17,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:21:17,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:21:17,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:21:17,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:21:17,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:21:17,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:21:17,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:21:17,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:21:17,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-10-21 20:21:17,548 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:21:17,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:21:17,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:21:17,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:21:17,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:21:17,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:21:17,554 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:21:17,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:21:17,555 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:21:17,555 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:21:17,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:21:17,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:21:17,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:21:17,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:21:17,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:21:17,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:21:17,557 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-21 20:21:17,557 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:21:17,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:21:17,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:21:17,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:21:17,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:21:17,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:21:17,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:21:17,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:21:17,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:21:17,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:21:17,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:21:17,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:21:17,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:21:17,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:21:17,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:21:17,560 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_e2fa0e7b-921c-4148-8919-c3a6a44116f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63d04d5fbdccf2f819812182b810f1f191af60a43091410d38a30548a516f60e [2021-10-21 20:21:17,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:21:17,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:21:17,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:21:17,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:21:17,944 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:21:17,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/bitvector/gcd_4.c [2021-10-21 20:21:18,064 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/data/8d9119cee/f028a7ebc04349188e836ef04b71f837/FLAG461cff76b [2021-10-21 20:21:18,588 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:21:18,588 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/sv-benchmarks/c/bitvector/gcd_4.c [2021-10-21 20:21:18,595 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/data/8d9119cee/f028a7ebc04349188e836ef04b71f837/FLAG461cff76b [2021-10-21 20:21:18,967 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/data/8d9119cee/f028a7ebc04349188e836ef04b71f837 [2021-10-21 20:21:18,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:21:18,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:21:18,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:21:18,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:21:18,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:21:18,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:21:18" (1/1) ... [2021-10-21 20:21:18,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c959a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:18, skipping insertion in model container [2021-10-21 20:21:18,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:21:18" (1/1) ... [2021-10-21 20:21:18,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:21:19,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:21:19,182 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/sv-benchmarks/c/bitvector/gcd_4.c[357,370] [2021-10-21 20:21:19,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:21:19,201 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:21:19,213 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/sv-benchmarks/c/bitvector/gcd_4.c[357,370] [2021-10-21 20:21:19,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:21:19,232 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:21:19,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:19 WrapperNode [2021-10-21 20:21:19,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:21:19,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:21:19,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:21:19,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:21:19,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:19" (1/1) ... [2021-10-21 20:21:19,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:19" (1/1) ... [2021-10-21 20:21:19,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:21:19,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:21:19,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:21:19,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:21:19,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:19" (1/1) ... [2021-10-21 20:21:19,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:19" (1/1) ... [2021-10-21 20:21:19,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:19" (1/1) ... [2021-10-21 20:21:19,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:19" (1/1) ... [2021-10-21 20:21:19,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:19" (1/1) ... [2021-10-21 20:21:19,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:19" (1/1) ... [2021-10-21 20:21:19,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:19" (1/1) ... [2021-10-21 20:21:19,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:21:19,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:21:19,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:21:19,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:21:19,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:19" (1/1) ... [2021-10-21 20:21:19,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:21:19,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:19,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:21:19,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:21:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:21:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:21:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:21:19,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:21:19,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:21:19,659 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-21 20:21:19,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:19 BoogieIcfgContainer [2021-10-21 20:21:19,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:21:19,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:21:19,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:21:19,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:21:19,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:21:18" (1/3) ... [2021-10-21 20:21:19,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391dbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:21:19, skipping insertion in model container [2021-10-21 20:21:19,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:21:19" (2/3) ... [2021-10-21 20:21:19,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391dbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:21:19, skipping insertion in model container [2021-10-21 20:21:19,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:19" (3/3) ... [2021-10-21 20:21:19,672 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2021-10-21 20:21:19,677 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:21:19,678 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-21 20:21:19,733 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:21:19,742 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 20:21:19,742 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-21 20:21:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:19,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-21 20:21:19,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:19,772 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-21 20:21:19,772 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-21 20:21:19,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:19,779 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-21 20:21:19,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:19,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319552997] [2021-10-21 20:21:19,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:19,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:20,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:20,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319552997] [2021-10-21 20:21:20,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319552997] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:20,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:20,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:21:20,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029653313] [2021-10-21 20:21:20,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:21:20,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:21:20,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:21:20,143 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:20,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:20,220 INFO L93 Difference]: Finished difference Result 91 states and 111 transitions. [2021-10-21 20:21:20,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:21:20,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-21 20:21:20,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:20,229 INFO L225 Difference]: With dead ends: 91 [2021-10-21 20:21:20,230 INFO L226 Difference]: Without dead ends: 29 [2021-10-21 20:21:20,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:21:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-21 20:21:20,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2021-10-21 20:21:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-21 20:21:20,280 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 4 [2021-10-21 20:21:20,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:20,281 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-21 20:21:20,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:20,282 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-21 20:21:20,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 20:21:20,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:20,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 20:21:20,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:21:20,283 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-21 20:21:20,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:20,284 INFO L82 PathProgramCache]: Analyzing trace with hash 28699785, now seen corresponding path program 1 times [2021-10-21 20:21:20,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:20,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476595553] [2021-10-21 20:21:20,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:20,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:20,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:20,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476595553] [2021-10-21 20:21:20,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476595553] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:20,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:20,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:21:20,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045397653] [2021-10-21 20:21:20,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:21:20,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:20,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:21:20,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:21:20,366 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:20,427 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-10-21 20:21:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:21:20,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-21 20:21:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:20,429 INFO L225 Difference]: With dead ends: 40 [2021-10-21 20:21:20,429 INFO L226 Difference]: Without dead ends: 25 [2021-10-21 20:21:20,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 20:21:20,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-21 20:21:20,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2021-10-21 20:21:20,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-21 20:21:20,445 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2021-10-21 20:21:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:20,447 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-21 20:21:20,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:20,448 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-21 20:21:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:21:20,449 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:20,449 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:20,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:21:20,450 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-21 20:21:20,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:20,453 INFO L82 PathProgramCache]: Analyzing trace with hash 302707703, now seen corresponding path program 1 times [2021-10-21 20:21:20,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:20,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267994501] [2021-10-21 20:21:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:20,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:20,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:20,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267994501] [2021-10-21 20:21:20,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267994501] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:20,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:20,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:21:20,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076588959] [2021-10-21 20:21:20,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:21:20,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:21:20,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:21:20,560 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:20,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:20,645 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-10-21 20:21:20,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:21:20,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-21 20:21:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:20,650 INFO L225 Difference]: With dead ends: 30 [2021-10-21 20:21:20,650 INFO L226 Difference]: Without dead ends: 28 [2021-10-21 20:21:20,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:21:20,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-21 20:21:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2021-10-21 20:21:20,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-21 20:21:20,656 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 8 [2021-10-21 20:21:20,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:20,657 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-21 20:21:20,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:20,657 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-21 20:21:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:21:20,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:20,657 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:20,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:21:20,658 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-21 20:21:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:20,658 INFO L82 PathProgramCache]: Analyzing trace with hash 302707895, now seen corresponding path program 1 times [2021-10-21 20:21:20,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:20,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561904935] [2021-10-21 20:21:20,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:20,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:20,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:20,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561904935] [2021-10-21 20:21:20,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561904935] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:20,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:21:20,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:21:20,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753628622] [2021-10-21 20:21:20,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:21:20,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:20,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:21:20,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:21:20,718 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:20,771 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-10-21 20:21:20,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:21:20,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-21 20:21:20,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:20,774 INFO L225 Difference]: With dead ends: 33 [2021-10-21 20:21:20,775 INFO L226 Difference]: Without dead ends: 19 [2021-10-21 20:21:20,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:21:20,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-21 20:21:20,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-21 20:21:20,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:20,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-10-21 20:21:20,784 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 8 [2021-10-21 20:21:20,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:20,785 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-21 20:21:20,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-10-21 20:21:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:21:20,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:20,786 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:20,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 20:21:20,786 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-21 20:21:20,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:20,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1796493298, now seen corresponding path program 1 times [2021-10-21 20:21:20,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:20,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985639411] [2021-10-21 20:21:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:20,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:20,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:20,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985639411] [2021-10-21 20:21:20,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985639411] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:20,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133603015] [2021-10-21 20:21:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:20,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:20,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:20,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:20,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:21:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:20,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:21:20,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:21,273 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 20:21:21,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133603015] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:21,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:21:21,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-21 20:21:21,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446206921] [2021-10-21 20:21:21,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:21:21,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:21:21,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:21:21,279 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:21,340 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-10-21 20:21:21,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:21:21,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 20:21:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:21,344 INFO L225 Difference]: With dead ends: 29 [2021-10-21 20:21:21,344 INFO L226 Difference]: Without dead ends: 27 [2021-10-21 20:21:21,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 44.2ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:21:21,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-21 20:21:21,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-10-21 20:21:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.380952380952381) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:21,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-10-21 20:21:21,357 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 12 [2021-10-21 20:21:21,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:21,357 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-10-21 20:21:21,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-10-21 20:21:21,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 20:21:21,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:21,377 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:21,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:21,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:21,592 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-21 20:21:21,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:21,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1796493490, now seen corresponding path program 1 times [2021-10-21 20:21:21,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:21,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004338354] [2021-10-21 20:21:21,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:21,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:21,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:21,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004338354] [2021-10-21 20:21:21,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004338354] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:21,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976998971] [2021-10-21 20:21:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:21,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:21,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:21,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:21,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:21:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:21,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:21:21,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:21,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976998971] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:21,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:21:21,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2021-10-21 20:21:21,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631835676] [2021-10-21 20:21:21,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:21:21,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:21,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:21:21,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:21:21,825 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:21,895 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2021-10-21 20:21:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:21:21,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-21 20:21:21,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:21,897 INFO L225 Difference]: With dead ends: 44 [2021-10-21 20:21:21,897 INFO L226 Difference]: Without dead ends: 32 [2021-10-21 20:21:21,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 40.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:21:21,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-21 20:21:21,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-21 20:21:21,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.25) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-10-21 20:21:21,902 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 12 [2021-10-21 20:21:21,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:21,902 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-21 20:21:21,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:21,902 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-10-21 20:21:21,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:21:21,903 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:21,903 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:21,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:22,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-21 20:21:22,116 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-21 20:21:22,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:22,116 INFO L82 PathProgramCache]: Analyzing trace with hash 442525736, now seen corresponding path program 2 times [2021-10-21 20:21:22,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:22,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306862180] [2021-10-21 20:21:22,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:22,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 20:21:22,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:22,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306862180] [2021-10-21 20:21:22,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306862180] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:22,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947401840] [2021-10-21 20:21:22,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:21:22,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:22,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:22,213 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:22,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:21:22,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:21:22,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:21:22,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:21:22,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-21 20:21:22,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947401840] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:22,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:21:22,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-10-21 20:21:22,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772386998] [2021-10-21 20:21:22,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:21:22,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:22,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:21:22,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:21:22,427 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:22,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:22,474 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-10-21 20:21:22,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:21:22,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-21 20:21:22,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:22,476 INFO L225 Difference]: With dead ends: 31 [2021-10-21 20:21:22,476 INFO L226 Difference]: Without dead ends: 30 [2021-10-21 20:21:22,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:21:22,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-21 20:21:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2021-10-21 20:21:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-10-21 20:21:22,485 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2021-10-21 20:21:22,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:22,485 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-21 20:21:22,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:22,488 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-10-21 20:21:22,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:21:22,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:22,489 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:22,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:22,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-21 20:21:22,700 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-21 20:21:22,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:22,700 INFO L82 PathProgramCache]: Analyzing trace with hash 620020322, now seen corresponding path program 1 times [2021-10-21 20:21:22,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:22,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081632244] [2021-10-21 20:21:22,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:22,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:22,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:22,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081632244] [2021-10-21 20:21:22,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081632244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:22,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846874123] [2021-10-21 20:21:22,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:22,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:22,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:22,773 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:22,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:21:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:22,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:21:22,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:23,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846874123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:23,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:21:23,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-21 20:21:23,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341507674] [2021-10-21 20:21:23,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:21:23,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:23,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:21:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:21:23,003 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:23,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:23,068 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2021-10-21 20:21:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:21:23,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-21 20:21:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:23,069 INFO L225 Difference]: With dead ends: 41 [2021-10-21 20:21:23,069 INFO L226 Difference]: Without dead ends: 31 [2021-10-21 20:21:23,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 53.6ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:21:23,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-21 20:21:23,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2021-10-21 20:21:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-10-21 20:21:23,074 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 20 [2021-10-21 20:21:23,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:23,075 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-10-21 20:21:23,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-10-21 20:21:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-21 20:21:23,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:23,076 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:23,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:23,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:23,299 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-21 20:21:23,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:23,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1505428003, now seen corresponding path program 2 times [2021-10-21 20:21:23,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:23,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215804212] [2021-10-21 20:21:23,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:23,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:23,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:23,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215804212] [2021-10-21 20:21:23,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215804212] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:23,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714154549] [2021-10-21 20:21:23,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:21:23,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:23,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:23,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:23,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 20:21:23,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:21:23,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:21:23,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:21:23,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:21:23,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714154549] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:23,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:21:23,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2021-10-21 20:21:23,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450567433] [2021-10-21 20:21:23,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 20:21:23,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:23,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 20:21:23,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:21:23,818 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:24,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:24,003 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2021-10-21 20:21:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:21:24,004 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-21 20:21:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:24,004 INFO L225 Difference]: With dead ends: 50 [2021-10-21 20:21:24,004 INFO L226 Difference]: Without dead ends: 36 [2021-10-21 20:21:24,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 111.2ms TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-21 20:21:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-21 20:21:24,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-10-21 20:21:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-21 20:21:24,009 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 24 [2021-10-21 20:21:24,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:24,009 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-21 20:21:24,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:24,010 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-21 20:21:24,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 20:21:24,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:21:24,011 INFO L512 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 20:21:24,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:24,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:24,212 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-21 20:21:24,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:21:24,212 INFO L82 PathProgramCache]: Analyzing trace with hash 570443853, now seen corresponding path program 3 times [2021-10-21 20:21:24,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:21:24,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055328104] [2021-10-21 20:21:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:21:24,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:21:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:21:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-21 20:21:24,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:21:24,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055328104] [2021-10-21 20:21:24,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055328104] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:21:24,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703618689] [2021-10-21 20:21:24,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 20:21:24,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:21:24,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:21:24,308 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:21:24,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 20:21:24,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 20:21:24,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:21:24,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:21:24,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:21:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-21 20:21:24,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703618689] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:21:24,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:21:24,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2021-10-21 20:21:24,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884642437] [2021-10-21 20:21:24,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 20:21:24,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:21:24,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:21:24,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:21:24,556 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:24,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:21:24,590 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-10-21 20:21:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:21:24,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-21 20:21:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:21:24,592 INFO L225 Difference]: With dead ends: 35 [2021-10-21 20:21:24,592 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:21:24,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.5ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:21:24,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:21:24,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:21:24,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:24,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:21:24,594 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-10-21 20:21:24,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:21:24,594 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:21:24,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:21:24,595 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:21:24,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:21:24,598 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:21:24,598 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:21:24,599 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:21:24,599 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:21:24,599 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:21:24,599 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:21:24,600 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:21:24,600 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 20:21:24,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:21:24,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 20:21:24,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:21:24,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:21:24,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:21:24,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:21:24,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:21:24,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:21:24,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:21:24,845 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-10-21 20:21:24,845 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-21 20:21:24,845 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-10-21 20:21:24,845 INFO L857 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-10-21 20:21:24,846 INFO L857 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-10-21 20:21:24,846 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 13 29) no Hoare annotation was computed. [2021-10-21 20:21:24,846 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-21 20:21:24,846 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:21:24,846 INFO L860 garLoopResultBuilder]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2021-10-21 20:21:24,847 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:21:24,847 INFO L860 garLoopResultBuilder]: At program point L7-5(lines 6 11) the Hoare annotation is: true [2021-10-21 20:21:24,847 INFO L857 garLoopResultBuilder]: For program point L7-6(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:21:24,847 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:21:24,847 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-21 20:21:24,847 INFO L860 garLoopResultBuilder]: At program point L7-8(lines 6 11) the Hoare annotation is: true [2021-10-21 20:21:24,848 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:21:24,848 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-21 20:21:24,848 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:21:24,848 INFO L860 garLoopResultBuilder]: At program point L28(lines 12 29) the Hoare annotation is: true [2021-10-21 20:21:24,848 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-21 20:21:24,848 INFO L857 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2021-10-21 20:21:24,848 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-21 20:21:24,849 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-21 20:21:24,849 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:21:24,849 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-21 20:21:24,849 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-21 20:21:24,849 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-21 20:21:24,849 INFO L857 garLoopResultBuilder]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2021-10-21 20:21:24,850 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-10-21 20:21:24,850 INFO L857 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2021-10-21 20:21:24,850 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 21 27) the Hoare annotation is: (and (<= ULTIMATE.start_gcd_test_~b 18) (<= 0 ULTIMATE.start_gcd_test_~b) (<= ULTIMATE.start_gcd_test_~a 2147483647) (< 0 ULTIMATE.start_gcd_test_~a)) [2021-10-21 20:21:24,850 INFO L860 garLoopResultBuilder]: At program point L47(lines 32 48) the Hoare annotation is: true [2021-10-21 20:21:24,850 INFO L857 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2021-10-21 20:21:24,851 INFO L857 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-21 20:21:24,851 INFO L857 garLoopResultBuilder]: For program point L14-2(line 14) no Hoare annotation was computed. [2021-10-21 20:21:24,851 INFO L857 garLoopResultBuilder]: For program point L14-4(lines 13 29) no Hoare annotation was computed. [2021-10-21 20:21:24,851 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-21 20:21:24,855 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:21:24,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:21:24 BoogieIcfgContainer [2021-10-21 20:21:24,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:21:24,869 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:21:24,869 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:21:24,870 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:21:24,870 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:21:19" (3/4) ... [2021-10-21 20:21:24,873 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:21:24,888 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-21 20:21:24,888 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-21 20:21:24,888 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:21:24,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:21:24,950 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:21:24,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:21:24,952 INFO L168 Benchmark]: Toolchain (without parser) took 5979.43 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 66.8 MB in the beginning and 51.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:24,952 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 83.9 MB. Free memory was 62.6 MB in the beginning and 62.6 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:21:24,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.83 ms. Allocated memory is still 100.7 MB. Free memory was 66.5 MB in the beginning and 77.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:24,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.61 ms. Allocated memory is still 100.7 MB. Free memory was 77.2 MB in the beginning and 75.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:24,954 INFO L168 Benchmark]: Boogie Preprocessor took 24.46 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 74.7 MB in the end (delta: 736.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:21:24,954 INFO L168 Benchmark]: RCFGBuilder took 355.19 ms. Allocated memory is still 100.7 MB. Free memory was 74.5 MB in the beginning and 64.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:24,955 INFO L168 Benchmark]: TraceAbstraction took 5205.49 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 63.6 MB in the beginning and 55.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:24,955 INFO L168 Benchmark]: Witness Printer took 81.22 ms. Allocated memory is still 125.8 MB. Free memory was 55.0 MB in the beginning and 51.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:21:24,958 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 83.9 MB. Free memory was 62.6 MB in the beginning and 62.6 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.83 ms. Allocated memory is still 100.7 MB. Free memory was 66.5 MB in the beginning and 77.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.61 ms. Allocated memory is still 100.7 MB. Free memory was 77.2 MB in the beginning and 75.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.46 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 74.7 MB in the end (delta: 736.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 355.19 ms. Allocated memory is still 100.7 MB. Free memory was 74.5 MB in the beginning and 64.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5205.49 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 63.6 MB in the beginning and 55.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. * Witness Printer took 81.22 ms. Allocated memory is still 125.8 MB. Free memory was 55.0 MB in the beginning and 51.8 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: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: 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 1 procedures, 37 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 5125.1ms, OverallIterations: 10, TraceHistogramMax: 7, EmptinessCheckTime: 34.2ms, AutomataDifference: 812.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 30.2ms, InitialAbstractionConstructionTime: 18.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 61 SDtfs, 164 SDslu, 38 SDs, 0 SdLazy, 440 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 421.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 415.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 93.2ms AutomataMinimizationTime, 10 MinimizatonAttempts, 37 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 23 NumberOfFragments, 18 HoareAnnotationTreeSize, 6 FomulaSimplifications, 225 FormulaSimplificationTreeSizeReduction, 16.2ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 7.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 63.1ms SsaConstructionTime, 305.0ms SatisfiabilityAnalysisTime, 1869.1ms InterpolantComputationTime, 265 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 249 ConstructedInterpolants, 0 QuantifiedInterpolants, 1293 SizeOfPredicates, 20 NumberOfNonLiveVariables, 390 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 126/256 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 8 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((b <= 18 && 0 <= b) && a <= 2147483647) && 0 < a RESULT: Ultimate proved your program to be correct! [2021-10-21 20:21:24,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2fa0e7b-921c-4148-8919-c3a6a44116f0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...