./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test24-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ba9918f9236391a08a9d6d8a63aa823d4042d99b397d7843518d83dccab2fbf8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:50:49,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:50:49,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:50:49,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:50:49,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:50:49,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:50:49,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:50:49,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:50:49,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:50:49,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:50:49,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:50:49,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:50:49,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:50:49,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:50:49,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:50:49,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:50:49,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:50:49,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:50:49,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:50:49,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:50:49,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:50:49,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:50:49,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:50:49,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:50:49,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:50:49,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:50:49,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:50:49,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:50:49,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:50:49,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:50:49,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:50:49,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:50:49,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:50:49,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:50:49,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:50:49,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:50:49,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:50:49,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:50:49,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:50:49,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:50:49,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:50:49,548 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:50:49,603 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:50:49,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:50:49,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:50:49,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:50:49,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:50:49,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:50:49,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:50:49,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:50:49,615 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:50:49,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:50:49,617 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:50:49,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:50:49,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:50:49,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:50:49,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:50:49,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:50:49,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:50:49,619 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:50:49,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:50:49,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:50:49,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:50:49,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:50:49,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:50:49,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:50:49,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:50:49,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:50:49,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:50:49,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:50:49,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:50:49,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:50:49,624 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:50:49,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:50:49,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:50:49,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:50:49,626 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_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba9918f9236391a08a9d6d8a63aa823d4042d99b397d7843518d83dccab2fbf8 [2021-11-19 04:50:49,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:50:50,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:50:50,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:50:50,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:50:50,018 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:50:50,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/ldv-regression/test24-2.c [2021-11-19 04:50:50,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/data/fefad4e8b/94cff09db72d4c24952f80d4a9805f55/FLAG4b77f576d [2021-11-19 04:50:50,703 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:50:50,704 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/sv-benchmarks/c/ldv-regression/test24-2.c [2021-11-19 04:50:50,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/data/fefad4e8b/94cff09db72d4c24952f80d4a9805f55/FLAG4b77f576d [2021-11-19 04:50:51,037 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/data/fefad4e8b/94cff09db72d4c24952f80d4a9805f55 [2021-11-19 04:50:51,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:50:51,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:50:51,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:50:51,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:50:51,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:50:51,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:51" (1/1) ... [2021-11-19 04:50:51,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fbe4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:51, skipping insertion in model container [2021-11-19 04:50:51,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:50:51" (1/1) ... [2021-11-19 04:50:51,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:50:51,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:50:51,352 WARN L230 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_aee1b585-1667-47f2-896a-32a789fc419d/sv-benchmarks/c/ldv-regression/test24-2.c[807,820] [2021-11-19 04:50:51,356 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:50:51,366 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:50:51,387 WARN L230 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_aee1b585-1667-47f2-896a-32a789fc419d/sv-benchmarks/c/ldv-regression/test24-2.c[807,820] [2021-11-19 04:50:51,388 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:50:51,403 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:50:51,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:51 WrapperNode [2021-11-19 04:50:51,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:50:51,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:50:51,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:50:51,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:50:51,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:51" (1/1) ... [2021-11-19 04:50:51,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:51" (1/1) ... [2021-11-19 04:50:51,444 INFO L137 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2021-11-19 04:50:51,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:50:51,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:50:51,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:50:51,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:50:51,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:51" (1/1) ... [2021-11-19 04:50:51,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:51" (1/1) ... [2021-11-19 04:50:51,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:51" (1/1) ... [2021-11-19 04:50:51,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:51" (1/1) ... [2021-11-19 04:50:51,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:51" (1/1) ... [2021-11-19 04:50:51,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:51" (1/1) ... [2021-11-19 04:50:51,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:51" (1/1) ... [2021-11-19 04:50:51,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:50:51,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:50:51,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:50:51,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:50:51,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:51" (1/1) ... [2021-11-19 04:50:51,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:50:51,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:50:51,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:50:51,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:50:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:50:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:50:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:50:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 04:50:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:50:51,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:50:51,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 04:50:51,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:50:51,646 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:50:51,648 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:50:51,822 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:50:51,830 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:50:51,830 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 04:50:51,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:51 BoogieIcfgContainer [2021-11-19 04:50:51,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:50:51,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:50:51,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:50:51,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:50:51,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:50:51" (1/3) ... [2021-11-19 04:50:51,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f03b897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:51, skipping insertion in model container [2021-11-19 04:50:51,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:50:51" (2/3) ... [2021-11-19 04:50:51,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f03b897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:50:51, skipping insertion in model container [2021-11-19 04:50:51,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:51" (3/3) ... [2021-11-19 04:50:51,858 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-2.c [2021-11-19 04:50:51,864 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:50:51,865 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:50:51,943 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:50:51,952 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 04:50:51,953 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 04:50:51,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 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) [2021-11-19 04:50:51,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 04:50:51,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:50:51,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:50:51,998 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:50:52,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:50:52,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1829445793, now seen corresponding path program 1 times [2021-11-19 04:50:52,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:50:52,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093390230] [2021-11-19 04:50:52,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:50:52,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:50:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:50:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:50:52,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:50:52,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093390230] [2021-11-19 04:50:52,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093390230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:50:52,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:50:52,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:50:52,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674679427] [2021-11-19 04:50:52,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:50:52,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:50:52,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:50:52,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:50:52,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:50:52,362 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 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) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:50:52,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:50:52,412 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2021-11-19 04:50:52,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:50:52,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-19 04:50:52,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:50:52,427 INFO L225 Difference]: With dead ends: 32 [2021-11-19 04:50:52,427 INFO L226 Difference]: Without dead ends: 15 [2021-11-19 04:50:52,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:50:52,439 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:50:52,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:50:52,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-19 04:50:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-11-19 04:50:52,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 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) [2021-11-19 04:50:52,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-19 04:50:52,492 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2021-11-19 04:50:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:50:52,493 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-19 04:50:52,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:50:52,495 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-19 04:50:52,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-19 04:50:52,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:50:52,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:50:52,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:50:52,498 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:50:52,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:50:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1835948819, now seen corresponding path program 1 times [2021-11-19 04:50:52,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:50:52,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974652058] [2021-11-19 04:50:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:50:52,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:50:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:50:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:50:52,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:50:52,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974652058] [2021-11-19 04:50:52,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974652058] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:50:52,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356292319] [2021-11-19 04:50:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:50:52,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:50:52,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:50:52,618 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:50:52,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:50:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:50:52,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:50:52,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:50:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:50:52,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:50:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:50:52,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356292319] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:50:52,967 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:50:52,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-19 04:50:52,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298884837] [2021-11-19 04:50:52,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:50:52,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:50:52,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:50:52,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:50:52,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:50:52,972 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-11-19 04:50:53,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:50:53,006 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-11-19 04:50:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:50:53,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) Word has length 13 [2021-11-19 04:50:53,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:50:53,008 INFO L225 Difference]: With dead ends: 29 [2021-11-19 04:50:53,008 INFO L226 Difference]: Without dead ends: 20 [2021-11-19 04:50:53,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:50:53,011 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:50:53,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:50:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-19 04:50:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-19 04:50:53,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 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) [2021-11-19 04:50:53,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-19 04:50:53,019 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2021-11-19 04:50:53,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:50:53,020 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-19 04:50:53,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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) [2021-11-19 04:50:53,020 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-19 04:50:53,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 04:50:53,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:50:53,027 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:50:53,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-19 04:50:53,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:50:53,241 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:50:53,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:50:53,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1825935181, now seen corresponding path program 2 times [2021-11-19 04:50:53,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:50:53,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932708054] [2021-11-19 04:50:53,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:50:53,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:50:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:50:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:50:53,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:50:53,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932708054] [2021-11-19 04:50:53,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932708054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:50:53,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680329472] [2021-11-19 04:50:53,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:50:53,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:50:53,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:50:53,393 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:50:53,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 04:50:53,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 04:50:53,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:50:53,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 04:50:53,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:50:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:50:53,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:50:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:50:53,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680329472] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:50:53,688 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:50:53,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-19 04:50:53,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470649043] [2021-11-19 04:50:53,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:50:53,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 04:50:53,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:50:53,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 04:50:53,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-19 04:50:53,692 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:50:53,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:50:53,783 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2021-11-19 04:50:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 04:50:53,784 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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 19 [2021-11-19 04:50:53,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:50:53,785 INFO L225 Difference]: With dead ends: 41 [2021-11-19 04:50:53,785 INFO L226 Difference]: Without dead ends: 32 [2021-11-19 04:50:53,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-19 04:50:53,788 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:50:53,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 42 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:50:53,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-19 04:50:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-19 04:50:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:50:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-11-19 04:50:53,797 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 19 [2021-11-19 04:50:53,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:50:53,798 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-11-19 04:50:53,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:50:53,798 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-11-19 04:50:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 04:50:53,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:50:53,800 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:50:53,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:50:54,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:50:54,022 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:50:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:50:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2028479167, now seen corresponding path program 3 times [2021-11-19 04:50:54,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:50:54,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179729071] [2021-11-19 04:50:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:50:54,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:50:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:50:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:50:54,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:50:54,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179729071] [2021-11-19 04:50:54,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179729071] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:50:54,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289775243] [2021-11-19 04:50:54,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 04:50:54,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:50:54,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:50:54,265 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:50:54,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 04:50:54,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-19 04:50:54,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:50:54,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 04:50:54,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:50:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:50:55,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:50:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:50:55,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289775243] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:50:55,373 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:50:55,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2021-11-19 04:50:55,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839516694] [2021-11-19 04:50:55,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:50:55,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 04:50:55,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:50:55,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 04:50:55,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-11-19 04:50:55,380 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:50:55,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:50:55,480 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2021-11-19 04:50:55,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-19 04:50:55,481 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 23 states have internal predecessors, (54), 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 31 [2021-11-19 04:50:55,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:50:55,483 INFO L225 Difference]: With dead ends: 61 [2021-11-19 04:50:55,483 INFO L226 Difference]: Without dead ends: 52 [2021-11-19 04:50:55,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-11-19 04:50:55,485 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:50:55,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 52 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:50:55,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-19 04:50:55,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-19 04:50:55,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:50:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-11-19 04:50:55,495 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 31 [2021-11-19 04:50:55,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:50:55,496 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-11-19 04:50:55,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:50:55,496 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-11-19 04:50:55,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-19 04:50:55,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:50:55,498 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:50:55,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:50:55,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:50:55,710 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:50:55,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:50:55,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1081145555, now seen corresponding path program 4 times [2021-11-19 04:50:55,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:50:55,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881558112] [2021-11-19 04:50:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:50:55,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:50:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:50:55,973 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 04:50:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 04:50:56,151 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 04:50:56,152 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 04:50:56,153 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 04:50:56,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 04:50:56,159 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1] [2021-11-19 04:50:56,163 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:50:56,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:50:56 BoogieIcfgContainer [2021-11-19 04:50:56,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:50:56,216 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:50:56,216 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:50:56,216 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:50:56,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:50:51" (3/4) ... [2021-11-19 04:50:56,219 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 04:50:56,299 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 04:50:56,300 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:50:56,300 INFO L158 Benchmark]: Toolchain (without parser) took 5258.24ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 64.2MB in the beginning and 71.9MB in the end (delta: -7.7MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2021-11-19 04:50:56,302 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 98.6MB. Free memory was 69.4MB in the beginning and 69.3MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:50:56,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.50ms. Allocated memory is still 98.6MB. Free memory was 64.0MB in the beginning and 73.9MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:50:56,303 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.19ms. Allocated memory is still 98.6MB. Free memory was 73.9MB in the beginning and 72.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:50:56,303 INFO L158 Benchmark]: Boogie Preprocessor took 27.35ms. Allocated memory is still 98.6MB. Free memory was 72.2MB in the beginning and 71.3MB in the end (delta: 919.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:50:56,304 INFO L158 Benchmark]: RCFGBuilder took 359.61ms. Allocated memory is still 98.6MB. Free memory was 71.3MB in the beginning and 61.3MB in the end (delta: 10.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 04:50:56,304 INFO L158 Benchmark]: TraceAbstraction took 4380.09ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 60.9MB in the beginning and 75.2MB in the end (delta: -14.3MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-11-19 04:50:56,305 INFO L158 Benchmark]: Witness Printer took 84.19ms. Allocated memory is still 119.5MB. Free memory was 75.2MB in the beginning and 71.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 04:50:56,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 98.6MB. Free memory was 69.4MB in the beginning and 69.3MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.50ms. Allocated memory is still 98.6MB. Free memory was 64.0MB in the beginning and 73.9MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.19ms. Allocated memory is still 98.6MB. Free memory was 73.9MB in the beginning and 72.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.35ms. Allocated memory is still 98.6MB. Free memory was 72.2MB in the beginning and 71.3MB in the end (delta: 919.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 359.61ms. Allocated memory is still 98.6MB. Free memory was 71.3MB in the beginning and 61.3MB in the end (delta: 10.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4380.09ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 60.9MB in the beginning and 75.2MB in the end (delta: -14.3MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Witness Printer took 84.19ms. Allocated memory is still 119.5MB. Free memory was 75.2MB in the beginning and 71.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 39]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] struct dummy ad1[20], *ad2; [L18] int i, j, *pa; [L19] j=0 VAL [ad1={5:0}, j=0] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=1] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=2] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=3] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=4] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=5] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=6] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=7] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=8] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=9] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=10] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=11] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=12] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=13] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=14] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=15] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=16] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=17] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=18] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=19] [L19] COND TRUE j<20 [L20] ad1[j].a = __VERIFIER_nondet_int() [L21] ad1[j].b = __VERIFIER_nondet_int() [L19] j++ VAL [ad1={5:0}, j=20] [L19] COND FALSE !(j<20) VAL [ad1={5:0}, j=20] [L23] i = __VERIFIER_nondet_int() [L24] COND TRUE i >= 0 && i < 10 [L25] ad2 = ad1 [L26] ad1[i].a = i [L27] pa = &ad1[i].a [L28] EXPR ad2[i].a [L28] i = ad2[i].a + 10 [L29] EXPR \read(*pa) VAL [\read(*pa)=0, ad1={5:0}, ad2={5:0}, i=10, j=20, pa={5:0}] [L29] COND FALSE !(i < *pa) [L32] CALL, EXPR check(ad1, i) [L12] EXPR ad1[b].a [L12] return ad1[b].a == b; [L32] RET, EXPR check(ad1, i) [L32] COND TRUE !check(ad1, i) [L39] reach_error() VAL [ad1={5:0}, ad2={5:0}, i=10, j=20, pa={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 5, TraceHistogramMax: 20, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 105 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 53 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=4, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 189 ConstructedInterpolants, 0 QuantifiedInterpolants, 389 SizeOfPredicates, 0 NumberOfNonLiveVariables, 351 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 0/351 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 04:50:56,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aee1b585-1667-47f2-896a-32a789fc419d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE