./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G --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 55f41c66c50792cda5d5bbe104482e2cd600942b05623220f52aeb9f6286617d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:31:23,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:31:23,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:31:23,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:31:23,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:31:23,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:31:23,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:31:23,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:31:23,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:31:23,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:31:23,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:31:23,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:31:23,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:31:23,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:31:23,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:31:23,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:31:23,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:31:23,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:31:23,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:31:23,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:31:23,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:31:23,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:31:23,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:31:23,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:31:23,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:31:23,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:31:23,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:31:23,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:31:23,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:31:23,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:31:23,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:31:23,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:31:23,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:31:23,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:31:23,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:31:23,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:31:23,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:31:23,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:31:23,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:31:23,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:31:23,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:31:23,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:31:23,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:31:23,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:31:23,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:31:23,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:31:23,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:31:23,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:31:23,641 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:31:23,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:31:23,641 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:31:23,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:31:23,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:31:23,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:31:23,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:31:23,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:31:23,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:31:23,644 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:31:23,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:31:23,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:31:23,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:31:23,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:31:23,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:31:23,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:31:23,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:31:23,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:31:23,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:31:23,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:31:23,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:31:23,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:31:23,648 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:31:23,648 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:31:23,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:31:23,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:31:23,649 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_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55f41c66c50792cda5d5bbe104482e2cd600942b05623220f52aeb9f6286617d [2021-11-23 12:31:23,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:31:24,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:31:24,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:31:24,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:31:24,019 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:31:24,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-regression/test08.c [2021-11-23 12:31:24,101 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/data/0684e272b/82f2f1dae6a04a71a2f8a78649b7fcf2/FLAGedcc70a03 [2021-11-23 12:31:24,694 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:31:24,695 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/sv-benchmarks/c/ldv-regression/test08.c [2021-11-23 12:31:24,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/data/0684e272b/82f2f1dae6a04a71a2f8a78649b7fcf2/FLAGedcc70a03 [2021-11-23 12:31:25,068 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/data/0684e272b/82f2f1dae6a04a71a2f8a78649b7fcf2 [2021-11-23 12:31:25,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:31:25,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:31:25,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:31:25,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:31:25,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:31:25,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@688364c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25, skipping insertion in model container [2021-11-23 12:31:25,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:31:25,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:31:25,336 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_42d44f54-3d0d-41c8-b747-0d66e30ba71f/sv-benchmarks/c/ldv-regression/test08.c[578,591] [2021-11-23 12:31:25,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:31:25,352 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:31:25,370 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_42d44f54-3d0d-41c8-b747-0d66e30ba71f/sv-benchmarks/c/ldv-regression/test08.c[578,591] [2021-11-23 12:31:25,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:31:25,386 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:31:25,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25 WrapperNode [2021-11-23 12:31:25,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:31:25,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:31:25,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:31:25,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:31:25,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,429 INFO L137 Inliner]: procedures = 12, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2021-11-23 12:31:25,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:31:25,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:31:25,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:31:25,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:31:25,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:31:25,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:31:25,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:31:25,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:31:25,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:31:25,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:25,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:31:25,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:31:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:31:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:31:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:31:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:31:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:31:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:31:25,638 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:31:25,640 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:31:25,770 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:31:25,777 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:31:25,778 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 12:31:25,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:25 BoogieIcfgContainer [2021-11-23 12:31:25,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:31:25,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:31:25,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:31:25,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:31:25,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:31:25" (1/3) ... [2021-11-23 12:31:25,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550de92b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:31:25, skipping insertion in model container [2021-11-23 12:31:25,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (2/3) ... [2021-11-23 12:31:25,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550de92b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:31:25, skipping insertion in model container [2021-11-23 12:31:25,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:25" (3/3) ... [2021-11-23 12:31:25,791 INFO L111 eAbstractionObserver]: Analyzing ICFG test08.c [2021-11-23 12:31:25,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:31:25,798 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:31:25,863 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:31:25,873 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 [2021-11-23 12:31:25,873 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:31:25,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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) [2021-11-23 12:31:25,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 12:31:25,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:25,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 12:31:25,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:25,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:25,907 INFO L85 PathProgramCache]: Analyzing trace with hash 889508715, now seen corresponding path program 1 times [2021-11-23 12:31:25,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:25,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030235468] [2021-11-23 12:31:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:25,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:31:26,108 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:31:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:31:26,225 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:31:26,227 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 12:31:26,230 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 12:31:26,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:31:26,239 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 12:31:26,244 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:31:26,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:31:26 BoogieIcfgContainer [2021-11-23 12:31:26,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:31:26,293 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:31:26,293 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:31:26,294 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:31:26,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:25" (3/4) ... [2021-11-23 12:31:26,297 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 12:31:26,380 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 12:31:26,381 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:31:26,382 INFO L158 Benchmark]: Toolchain (without parser) took 1308.76ms. Allocated memory is still 138.4MB. Free memory was 108.3MB in the beginning and 85.7MB in the end (delta: 22.6MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2021-11-23 12:31:26,383 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 94.4MB. Free memory is still 49.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:31:26,383 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.41ms. Allocated memory is still 138.4MB. Free memory was 108.0MB in the beginning and 114.0MB in the end (delta: -6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:31:26,384 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.67ms. Allocated memory is still 138.4MB. Free memory was 114.0MB in the beginning and 112.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:31:26,384 INFO L158 Benchmark]: Boogie Preprocessor took 24.31ms. Allocated memory is still 138.4MB. Free memory was 112.3MB in the beginning and 111.6MB in the end (delta: 687.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:31:26,385 INFO L158 Benchmark]: RCFGBuilder took 324.38ms. Allocated memory is still 138.4MB. Free memory was 111.3MB in the beginning and 102.1MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 12:31:26,385 INFO L158 Benchmark]: TraceAbstraction took 506.41ms. Allocated memory is still 138.4MB. Free memory was 101.5MB in the beginning and 87.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 12:31:26,386 INFO L158 Benchmark]: Witness Printer took 88.15ms. Allocated memory is still 138.4MB. Free memory was 87.8MB in the beginning and 85.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:31:26,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 94.4MB. Free memory is still 49.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.41ms. Allocated memory is still 138.4MB. Free memory was 108.0MB in the beginning and 114.0MB in the end (delta: -6.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.67ms. Allocated memory is still 138.4MB. Free memory was 114.0MB in the beginning and 112.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.31ms. Allocated memory is still 138.4MB. Free memory was 112.3MB in the beginning and 111.6MB in the end (delta: 687.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 324.38ms. Allocated memory is still 138.4MB. Free memory was 111.3MB in the beginning and 102.1MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 506.41ms. Allocated memory is still 138.4MB. Free memory was 101.5MB in the beginning and 87.8MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 88.15ms. Allocated memory is still 138.4MB. Free memory was 87.8MB in the beginning and 85.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 38]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6] int a, b; [L7] int *p1, *p2; VAL [a={4:0}, b={5:0}, p1={0:0}, p2={0:0}] [L21] p1 = &a [L22] p2 = &b [L24] b = 1 [L25] a = 5 [L27] EXPR \read(a) [L27] a-- [L29] CALL, EXPR f() [L10] EXPR \read(*p1) [L10] EXPR \read(*p2) [L10] EXPR \read(a) [L10] int v = *p1 + *p2 - a; [L11] COND TRUE v == 1 [L12] p1 = p2 [L13] return v; VAL [\result=1, a={4:0}, b={5:0}, p1={5:0}, p2={5:0}, v=1] [L29] RET, EXPR f() [L29] a = f() [L31] EXPR \read(a) VAL [\read(a)=1, a={4:0}, b={5:0}, p1={5:0}, p2={5:0}] [L31] COND TRUE a && p1 == p2 [L38] reach_error() VAL [a={4:0}, b={5:0}, p1={5:0}, p2={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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! [2021-11-23 12:31:26,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d44f54-3d0d-41c8-b747-0d66e30ba71f/bin/uautomizer-wIGwrQj20G/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