./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2018/Problem16.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2018/Problem16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU --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 109d79acc9f0ebf30672589a81cb76b857da77dbea7f7c16d3f17b5b5da23748 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:03:20,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:03:20,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:03:20,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:03:20,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:03:20,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:03:20,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:03:20,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:03:20,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:03:20,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:03:20,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:03:20,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:03:20,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:03:20,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:03:20,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:03:20,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:03:20,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:03:20,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:03:20,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:03:20,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:03:20,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:03:20,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:03:20,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:03:20,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:03:20,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:03:20,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:03:20,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:03:20,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:03:20,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:03:20,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:03:20,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:03:20,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:03:20,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:03:20,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:03:20,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:03:20,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:03:20,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:03:20,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:03:20,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:03:20,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:03:20,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:03:20,298 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 23:03:20,329 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:03:20,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:03:20,330 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:03:20,330 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:03:20,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:03:20,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:03:20,331 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:03:20,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:03:20,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:03:20,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:03:20,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:03:20,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:03:20,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:03:20,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:03:20,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:03:20,333 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:03:20,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:03:20,334 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:03:20,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:03:20,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:03:20,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:03:20,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:03:20,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:03:20,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:03:20,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:03:20,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:03:20,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:03:20,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:03:20,336 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:03:20,336 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:03:20,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:03:20,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:03:20,336 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_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 109d79acc9f0ebf30672589a81cb76b857da77dbea7f7c16d3f17b5b5da23748 [2021-11-02 23:03:20,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:03:20,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:03:20,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:03:20,622 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:03:20,623 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:03:20,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/eca-rers2018/Problem16.c [2021-11-02 23:03:20,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/data/30581d9df/e7152cb78cf8453ab27b0b64084c1da4/FLAGdffd6b51b [2021-11-02 23:03:25,903 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:03:25,904 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/sv-benchmarks/c/eca-rers2018/Problem16.c [2021-11-02 23:03:26,526 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/data/30581d9df/e7152cb78cf8453ab27b0b64084c1da4/FLAGdffd6b51b [2021-11-02 23:03:26,610 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/data/30581d9df/e7152cb78cf8453ab27b0b64084c1da4 [2021-11-02 23:03:26,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:03:26,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:03:26,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:03:26,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:03:26,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:03:26,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:03:26" (1/1) ... [2021-11-02 23:03:26,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e10af94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:03:26, skipping insertion in model container [2021-11-02 23:03:26,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:03:26" (1/1) ... [2021-11-02 23:03:26,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:03:29,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:03:30,403 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/sv-benchmarks/c/eca-rers2018/Problem16.c[778,791] [2021-11-02 23:03:30,490 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/sv-benchmarks/c/eca-rers2018/Problem16.c[817,830] [2021-11-02 23:05:30,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:05:30,562 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:05:30,579 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/sv-benchmarks/c/eca-rers2018/Problem16.c[778,791] [2021-11-02 23:05:30,581 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/sv-benchmarks/c/eca-rers2018/Problem16.c[817,830] [2021-11-02 23:05:37,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:05:42,087 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:05:42,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:05:42 WrapperNode [2021-11-02 23:05:42,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:05:42,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:05:42,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:05:42,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:05:42,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:05:42" (1/1) ... [2021-11-02 23:05:44,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:05:42" (1/1) ... [2021-11-02 23:05:50,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:05:50,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:05:50,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:05:50,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:05:50,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:05:42" (1/1) ... [2021-11-02 23:05:50,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:05:42" (1/1) ... [2021-11-02 23:05:51,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:05:42" (1/1) ... [2021-11-02 23:05:51,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:05:42" (1/1) ... [2021-11-02 23:05:54,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:05:42" (1/1) ... [2021-11-02 23:05:55,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:05:42" (1/1) ... [2021-11-02 23:05:56,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:05:42" (1/1) ... [2021-11-02 23:05:57,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:05:57,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:05:57,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:05:57,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:05:57,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:05:42" (1/1) ... [2021-11-02 23:05:57,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:05:57,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:05:57,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:05:57,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cab6df6d-533b-4691-8837-f711dfa4218b/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:05:57,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:05:57,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:05:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:05:57,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:07:24,373 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:07:24,373 INFO L299 CfgBuilder]: Removed 2745 assume(true) statements. [2021-11-02 23:07:24,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:07:24 BoogieIcfgContainer [2021-11-02 23:07:24,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:07:24,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:07:24,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:07:24,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:07:24,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:03:26" (1/3) ... [2021-11-02 23:07:24,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b0da12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:07:24, skipping insertion in model container [2021-11-02 23:07:24,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:05:42" (2/3) ... [2021-11-02 23:07:24,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b0da12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:07:24, skipping insertion in model container [2021-11-02 23:07:24,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:07:24" (3/3) ... [2021-11-02 23:07:24,400 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16.c [2021-11-02 23:07:24,407 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:07:24,407 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 100 error locations. [2021-11-02 23:07:24,493 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:07:24,500 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 [2021-11-02 23:07:24,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 100 error locations. [2021-11-02 23:07:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 7439 states, 7338 states have (on average 1.999591169255928) internal successors, (14673), 7438 states have internal predecessors, (14673), 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) [2021-11-02 23:07:24,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-02 23:07:24,655 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:07:24,656 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:07:24,657 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-02 23:07:24,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:07:24,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1598438430, now seen corresponding path program 1 times [2021-11-02 23:07:24,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:07:24,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442038899] [2021-11-02 23:07:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:07:24,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:07:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:07:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:07:25,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:07:25,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442038899] [2021-11-02 23:07:25,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442038899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:07:25,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:07:25,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:07:25,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524698669] [2021-11-02 23:07:25,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:07:25,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:07:25,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:07:25,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:07:25,334 INFO L87 Difference]: Start difference. First operand has 7439 states, 7338 states have (on average 1.999591169255928) internal successors, (14673), 7438 states have internal predecessors, (14673), 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 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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) [2021-11-02 23:07:46,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:07:46,344 INFO L93 Difference]: Finished difference Result 17220 states and 33984 transitions. [2021-11-02 23:07:46,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:07:46,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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) Word has length 11 [2021-11-02 23:07:46,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:07:46,435 INFO L225 Difference]: With dead ends: 17220 [2021-11-02 23:07:46,435 INFO L226 Difference]: Without dead ends: 9774 [2021-11-02 23:07:46,449 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:07:46,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9774 states. [2021-11-02 23:07:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9774 to 8957. [2021-11-02 23:07:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8957 states, 8857 states have (on average 1.9784351360505814) internal successors, (17523), 8956 states have internal predecessors, (17523), 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) [2021-11-02 23:07:46,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 17523 transitions. [2021-11-02 23:07:46,789 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 17523 transitions. Word has length 11 [2021-11-02 23:07:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:07:46,790 INFO L470 AbstractCegarLoop]: Abstraction has 8957 states and 17523 transitions. [2021-11-02 23:07:46,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 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) [2021-11-02 23:07:46,790 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 17523 transitions. [2021-11-02 23:07:46,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 23:07:46,796 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:07:46,796 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:07:46,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:07:46,797 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-02 23:07:46,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:07:46,798 INFO L85 PathProgramCache]: Analyzing trace with hash 633048422, now seen corresponding path program 1 times [2021-11-02 23:07:46,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:07:46,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680370714] [2021-11-02 23:07:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:07:46,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:07:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:07:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:07:47,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:07:47,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680370714] [2021-11-02 23:07:47,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680370714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:07:47,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:07:47,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:07:47,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043263740] [2021-11-02 23:07:47,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:07:47,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:07:47,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:07:47,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:07:47,048 INFO L87 Difference]: Start difference. First operand 8957 states and 17523 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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)