./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label25.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label25.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5c11f81acb23d199db5ff3acfeb2ee342874a261 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:09:55,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:09:55,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:09:55,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:09:55,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:09:55,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:09:55,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:09:55,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:09:55,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:09:55,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:09:55,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:09:55,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:09:55,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:09:55,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:09:55,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:09:55,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:09:55,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:09:55,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:09:55,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:09:55,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:09:55,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:09:55,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:09:55,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:09:55,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:09:55,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:09:55,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:09:55,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:09:55,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:09:55,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:09:55,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:09:55,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:09:55,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:09:55,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:09:55,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:09:55,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:09:55,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:09:55,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:09:55,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:09:55,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:09:55,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:09:55,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:09:55,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:09:55,401 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:09:55,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:09:55,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:09:55,402 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:09:55,403 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:09:55,403 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:09:55,403 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:09:55,403 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:09:55,404 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:09:55,404 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:09:55,404 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:09:55,404 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:09:55,405 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:09:55,405 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:09:55,405 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:09:55,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:09:55,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:09:55,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:09:55,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:09:55,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:09:55,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:09:55,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:09:55,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:09:55,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:09:55,413 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:09:55,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:09:55,413 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:09:55,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:09:55,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:09:55,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:09:55,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:09:55,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:09:55,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:09:55,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:09:55,415 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:09:55,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:09:55,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:09:55,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:09:55,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:09:55,419 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c11f81acb23d199db5ff3acfeb2ee342874a261 [2021-10-13 07:09:55,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:09:55,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:09:55,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:09:55,736 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:09:55,737 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:09:55,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem01_label25.c [2021-10-13 07:09:55,817 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/data/901ccfcec/bb4c4b58d4a3422b9abe2d2c728a2667/FLAG9c4e56b88 [2021-10-13 07:09:56,403 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:09:56,403 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/sv-benchmarks/c/eca-rers2012/Problem01_label25.c [2021-10-13 07:09:56,418 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/data/901ccfcec/bb4c4b58d4a3422b9abe2d2c728a2667/FLAG9c4e56b88 [2021-10-13 07:09:56,645 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/data/901ccfcec/bb4c4b58d4a3422b9abe2d2c728a2667 [2021-10-13 07:09:56,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:09:56,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:09:56,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:09:56,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:09:56,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:09:56,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:56" (1/1) ... [2021-10-13 07:09:56,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651424a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:56, skipping insertion in model container [2021-10-13 07:09:56,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:56" (1/1) ... [2021-10-13 07:09:56,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:09:56,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:09:57,128 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_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/sv-benchmarks/c/eca-rers2012/Problem01_label25.c[20346,20359] [2021-10-13 07:09:57,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:09:57,174 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:09:57,282 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_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/sv-benchmarks/c/eca-rers2012/Problem01_label25.c[20346,20359] [2021-10-13 07:09:57,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:09:57,323 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:09:57,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:57 WrapperNode [2021-10-13 07:09:57,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:09:57,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:09:57,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:09:57,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:09:57,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:57" (1/1) ... [2021-10-13 07:09:57,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:57" (1/1) ... [2021-10-13 07:09:57,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:09:57,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:09:57,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:09:57,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:09:57,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:57" (1/1) ... [2021-10-13 07:09:57,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:57" (1/1) ... [2021-10-13 07:09:57,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:57" (1/1) ... [2021-10-13 07:09:57,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:57" (1/1) ... [2021-10-13 07:09:57,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:57" (1/1) ... [2021-10-13 07:09:57,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:57" (1/1) ... [2021-10-13 07:09:57,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:57" (1/1) ... [2021-10-13 07:09:57,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:09:57,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:09:57,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:09:57,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:09:57,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:57" (1/1) ... [2021-10-13 07:09:57,567 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:09:57,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:09:57,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:09:57,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:09:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:09:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:09:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:09:57,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:09:59,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:09:59,383 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:09:59,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:59 BoogieIcfgContainer [2021-10-13 07:09:59,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:09:59,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:09:59,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:09:59,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:09:59,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:09:56" (1/3) ... [2021-10-13 07:09:59,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615c1f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:59, skipping insertion in model container [2021-10-13 07:09:59,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:57" (2/3) ... [2021-10-13 07:09:59,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615c1f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:59, skipping insertion in model container [2021-10-13 07:09:59,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:59" (3/3) ... [2021-10-13 07:09:59,403 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label25.c [2021-10-13 07:09:59,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:09:59,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:09:59,477 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:09:59,486 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:09:59,487 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:09:59,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:09:59,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-13 07:09:59,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:09:59,526 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:09:59,527 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:09:59,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:09:59,533 INFO L82 PathProgramCache]: Analyzing trace with hash -104648504, now seen corresponding path program 1 times [2021-10-13 07:09:59,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:09:59,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711637671] [2021-10-13 07:09:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:09:59,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:09:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:10:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:10:00,126 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:10:00,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711637671] [2021-10-13 07:10:00,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711637671] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:10:00,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:10:00,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:10:00,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067965618] [2021-10-13 07:10:00,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:10:00,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:10:00,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:10:00,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:10:00,172 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:00,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:10:00,815 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2021-10-13 07:10:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:10:00,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-10-13 07:10:00,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:10:00,830 INFO L225 Difference]: With dead ends: 297 [2021-10-13 07:10:00,831 INFO L226 Difference]: Without dead ends: 216 [2021-10-13 07:10:00,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:10:00,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-13 07:10:00,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-13 07:10:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.5627906976744186) internal successors, (336), 215 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2021-10-13 07:10:00,889 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2021-10-13 07:10:00,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:10:00,891 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2021-10-13 07:10:00,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:00,891 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2021-10-13 07:10:00,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-13 07:10:00,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:10:00,896 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:10:00,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:10:00,897 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:10:00,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:10:00,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1164135655, now seen corresponding path program 1 times [2021-10-13 07:10:00,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:10:00,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837474662] [2021-10-13 07:10:00,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:10:00,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:10:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:10:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:10:01,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:10:01,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837474662] [2021-10-13 07:10:01,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837474662] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:10:01,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:10:01,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:10:01,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811253705] [2021-10-13 07:10:01,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:10:01,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:10:01,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:10:01,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:10:01,110 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:01,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:10:01,707 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2021-10-13 07:10:01,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:10:01,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-10-13 07:10:01,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:10:01,711 INFO L225 Difference]: With dead ends: 500 [2021-10-13 07:10:01,712 INFO L226 Difference]: Without dead ends: 287 [2021-10-13 07:10:01,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:10:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-13 07:10:01,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2021-10-13 07:10:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.3627906976744186) internal successors, (293), 215 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2021-10-13 07:10:01,731 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2021-10-13 07:10:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:10:01,731 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2021-10-13 07:10:01,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:01,732 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2021-10-13 07:10:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-13 07:10:01,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:10:01,735 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:10:01,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:10:01,736 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:10:01,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:10:01,737 INFO L82 PathProgramCache]: Analyzing trace with hash -922321321, now seen corresponding path program 1 times [2021-10-13 07:10:01,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:10:01,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450433768] [2021-10-13 07:10:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:10:01,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:10:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:10:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:10:01,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:10:01,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450433768] [2021-10-13 07:10:01,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450433768] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:10:01,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494362127] [2021-10-13 07:10:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:10:01,814 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:10:01,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:10:01,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:10:01,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:10:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:10:01,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:10:01,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:10:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:10:02,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:10:02,617 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:10:02,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494362127] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:10:02,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:10:02,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-13 07:10:02,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850795841] [2021-10-13 07:10:02,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:10:02,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:10:02,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:10:02,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:10:02,623 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:10:02,902 INFO L93 Difference]: Finished difference Result 644 states and 876 transitions. [2021-10-13 07:10:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:10:02,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 86 [2021-10-13 07:10:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:10:02,906 INFO L225 Difference]: With dead ends: 644 [2021-10-13 07:10:02,906 INFO L226 Difference]: Without dead ends: 429 [2021-10-13 07:10:02,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:10:02,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-13 07:10:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2021-10-13 07:10:02,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.4201680672268908) internal successors, (507), 357 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:02,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 507 transitions. [2021-10-13 07:10:02,926 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 507 transitions. Word has length 86 [2021-10-13 07:10:02,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:10:02,927 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 507 transitions. [2021-10-13 07:10:02,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:02,927 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 507 transitions. [2021-10-13 07:10:02,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-13 07:10:02,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:10:02,932 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:10:02,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:10:03,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:10:03,148 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:10:03,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:10:03,148 INFO L82 PathProgramCache]: Analyzing trace with hash -350410484, now seen corresponding path program 1 times [2021-10-13 07:10:03,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:10:03,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204056553] [2021-10-13 07:10:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:10:03,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:10:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:10:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-13 07:10:03,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:10:03,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204056553] [2021-10-13 07:10:03,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204056553] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:10:03,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171699322] [2021-10-13 07:10:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:10:03,232 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:10:03,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:10:03,233 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:10:03,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:10:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:10:03,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:10:03,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:10:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-13 07:10:03,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:10:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-13 07:10:04,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171699322] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:10:04,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:10:04,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-13 07:10:04,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678614413] [2021-10-13 07:10:04,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:10:04,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:10:04,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:10:04,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:10:04,154 INFO L87 Difference]: Start difference. First operand 358 states and 507 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:04,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:10:04,436 INFO L93 Difference]: Finished difference Result 857 states and 1247 transitions. [2021-10-13 07:10:04,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:10:04,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 105 [2021-10-13 07:10:04,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:10:04,440 INFO L225 Difference]: With dead ends: 857 [2021-10-13 07:10:04,440 INFO L226 Difference]: Without dead ends: 500 [2021-10-13 07:10:04,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:10:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-13 07:10:04,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2021-10-13 07:10:04,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.4065420560747663) internal successors, (602), 428 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:04,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 602 transitions. [2021-10-13 07:10:04,455 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 602 transitions. Word has length 105 [2021-10-13 07:10:04,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:10:04,456 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 602 transitions. [2021-10-13 07:10:04,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:04,457 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 602 transitions. [2021-10-13 07:10:04,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-13 07:10:04,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:10:04,459 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:10:04,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:10:04,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-13 07:10:04,672 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:10:04,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:10:04,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1631070834, now seen corresponding path program 1 times [2021-10-13 07:10:04,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:10:04,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415659717] [2021-10-13 07:10:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:10:04,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:10:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:10:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-10-13 07:10:04,779 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:10:04,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415659717] [2021-10-13 07:10:04,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415659717] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:10:04,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835296654] [2021-10-13 07:10:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:10:04,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:10:04,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:10:04,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:10:04,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:10:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:10:05,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:10:05,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:10:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 07:10:05,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:10:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 07:10:05,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835296654] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:10:05,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:10:05,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2021-10-13 07:10:05,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401518960] [2021-10-13 07:10:05,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:10:05,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:10:05,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:10:05,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:10:05,600 INFO L87 Difference]: Start difference. First operand 429 states and 602 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:06,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:10:06,050 INFO L93 Difference]: Finished difference Result 1139 states and 1544 transitions. [2021-10-13 07:10:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:10:06,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 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 121 [2021-10-13 07:10:06,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:10:06,052 INFO L225 Difference]: With dead ends: 1139 [2021-10-13 07:10:06,052 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:10:06,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:10:06,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:10:06,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:10:06,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:06,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:10:06,054 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 121 [2021-10-13 07:10:06,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:10:06,055 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:10:06,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:10:06,055 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:10:06,055 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:10:06,058 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:10:06,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:10:06,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:10:06,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:10:06,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:10:06,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:10:06,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:10:06,441 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-13 07:10:06,441 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-13 07:10:06,442 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-13 07:10:06,442 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-13 07:10:06,442 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-13 07:10:06,442 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-13 07:10:06,442 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-13 07:10:06,442 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-13 07:10:06,443 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-13 07:10:06,443 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-13 07:10:06,443 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-13 07:10:06,443 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-13 07:10:06,443 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-13 07:10:06,443 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-13 07:10:06,444 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-13 07:10:06,444 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-13 07:10:06,444 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-13 07:10:06,444 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-13 07:10:06,444 INFO L857 garLoopResultBuilder]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2021-10-13 07:10:06,445 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-13 07:10:06,445 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-13 07:10:06,445 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-13 07:10:06,445 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-13 07:10:06,445 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-13 07:10:06,445 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-13 07:10:06,446 INFO L857 garLoopResultBuilder]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2021-10-13 07:10:06,446 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-13 07:10:06,446 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-13 07:10:06,446 INFO L857 garLoopResultBuilder]: For program point L543(line 543) no Hoare annotation was computed. [2021-10-13 07:10:06,446 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-13 07:10:06,446 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-13 07:10:06,447 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-13 07:10:06,447 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-13 07:10:06,447 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-13 07:10:06,447 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-13 07:10:06,447 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-13 07:10:06,447 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-13 07:10:06,448 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-13 07:10:06,448 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-13 07:10:06,448 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:10:06,448 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-13 07:10:06,448 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-13 07:10:06,448 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-13 07:10:06,449 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (<= ~a16~0 5)) (.cse2 (= ~a12~0 8)) (.cse3 (= ~a21~0 1)) (.cse4 (= ~a17~0 1)) (.cse5 (= ~a20~0 1)) (.cse1 (not (= ~a7~0 1)))) (or (and (< 13 ~a8~0) .cse0) (and .cse1 .cse0) (and .cse2 (= ~a8~0 13) .cse3 .cse4 .cse5 (= ~a16~0 4)) (<= ~a21~0 0) (and .cse2 .cse1 .cse3 .cse4 .cse5) (and .cse1 (<= 15 ~a8~0)))) [2021-10-13 07:10:06,449 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-13 07:10:06,449 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-13 07:10:06,449 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-13 07:10:06,450 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-13 07:10:06,450 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-13 07:10:06,453 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-13 07:10:06,453 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-13 07:10:06,454 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:10:06,454 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-13 07:10:06,454 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-13 07:10:06,454 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-13 07:10:06,454 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-13 07:10:06,454 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-13 07:10:06,455 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-13 07:10:06,455 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-13 07:10:06,455 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-13 07:10:06,455 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-13 07:10:06,455 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-13 07:10:06,455 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-13 07:10:06,456 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-13 07:10:06,456 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-13 07:10:06,456 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-13 07:10:06,456 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-13 07:10:06,456 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (<= ~a16~0 5)) (.cse2 (= ~a12~0 8)) (.cse3 (= ~a21~0 1)) (.cse4 (= ~a17~0 1)) (.cse5 (= ~a20~0 1)) (.cse1 (not (= ~a7~0 1)))) (or (and (< 13 ~a8~0) .cse0) (and .cse1 .cse0) (and .cse2 (= ~a8~0 13) .cse3 .cse4 .cse5 (= ~a16~0 4)) (<= ~a21~0 0) (and .cse2 .cse1 .cse3 .cse4 .cse5) (and .cse1 (<= 15 ~a8~0)))) [2021-10-13 07:10:06,457 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-13 07:10:06,457 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 543) no Hoare annotation was computed. [2021-10-13 07:10:06,457 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-13 07:10:06,457 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-13 07:10:06,457 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-13 07:10:06,459 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-13 07:10:06,460 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-13 07:10:06,461 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-13 07:10:06,466 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:10:06,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:10:06 BoogieIcfgContainer [2021-10-13 07:10:06,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:10:06,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:10:06,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:10:06,505 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:10:06,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:59" (3/4) ... [2021-10-13 07:10:06,509 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:10:06,547 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 107 nodes and edges [2021-10-13 07:10:06,549 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-13 07:10:06,551 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-13 07:10:06,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 07:10:06,716 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:10:06,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:10:06,718 INFO L168 Benchmark]: Toolchain (without parser) took 10068.69 ms. Allocated memory was 83.9 MB in the beginning and 172.0 MB in the end (delta: 88.1 MB). Free memory was 60.6 MB in the beginning and 97.5 MB in the end (delta: -36.9 MB). Peak memory consumption was 51.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:10:06,719 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 60.7 MB in the beginning and 60.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:10:06,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.22 ms. Allocated memory is still 83.9 MB. Free memory was 60.6 MB in the beginning and 43.5 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:10:06,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.33 ms. Allocated memory is still 83.9 MB. Free memory was 43.5 MB in the beginning and 37.8 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:10:06,722 INFO L168 Benchmark]: Boogie Preprocessor took 121.70 ms. Allocated memory is still 83.9 MB. Free memory was 37.8 MB in the beginning and 33.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:10:06,722 INFO L168 Benchmark]: RCFGBuilder took 1836.15 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 33.6 MB in the beginning and 61.1 MB in the end (delta: -27.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:10:06,723 INFO L168 Benchmark]: TraceAbstraction took 7109.61 ms. Allocated memory was 104.9 MB in the beginning and 172.0 MB in the end (delta: 67.1 MB). Free memory was 61.1 MB in the beginning and 113.2 MB in the end (delta: -52.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:10:06,723 INFO L168 Benchmark]: Witness Printer took 212.28 ms. Allocated memory is still 172.0 MB. Free memory was 112.1 MB in the beginning and 97.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:10:06,725 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 60.7 MB in the beginning and 60.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 674.22 ms. Allocated memory is still 83.9 MB. Free memory was 60.6 MB in the beginning and 43.5 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 106.33 ms. Allocated memory is still 83.9 MB. Free memory was 43.5 MB in the beginning and 37.8 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 121.70 ms. Allocated memory is still 83.9 MB. Free memory was 37.8 MB in the beginning and 33.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1836.15 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 33.6 MB in the beginning and 61.1 MB in the end (delta: -27.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7109.61 ms. Allocated memory was 104.9 MB in the beginning and 172.0 MB in the end (delta: 67.1 MB). Free memory was 61.1 MB in the beginning and 113.2 MB in the end (delta: -52.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Witness Printer took 212.28 ms. Allocated memory is still 172.0 MB. Free memory was 112.1 MB in the beginning and 97.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 543]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6990.3ms, OverallIterations: 5, TraceHistogramMax: 5, EmptinessCheckTime: 35.1ms, AutomataDifference: 2325.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 179.1ms, InitialAbstractionConstructionTime: 15.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 230 SDtfs, 477 SDslu, 34 SDs, 0 SdLazy, 1375 SolverSat, 447 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1618.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 634 GetRequests, 617 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 101.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=429occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 87.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 213 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 28 NumberOfFragments, 127 HoareAnnotationTreeSize, 3 FomulaSimplifications, 560 FormulaSimplificationTreeSizeReduction, 26.6ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 145.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 110.4ms SsaConstructionTime, 379.6ms SatisfiabilityAnalysisTime, 2663.3ms InterpolantComputationTime, 773 NumberOfCodeBlocks, 773 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1074 ConstructedInterpolants, 0 QuantifiedInterpolants, 4819 SizeOfPredicates, 0 NumberOfNonLiveVariables, 982 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 486/495 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((13 < a8 && a16 <= 5) || (!(a7 == 1) && a16 <= 5)) || (((((a12 == 8 && a8 == 13) && a21 == 1) && a17 == 1) && a20 == 1) && a16 == 4)) || a21 <= 0) || ((((a12 == 8 && !(a7 == 1)) && a21 == 1) && a17 == 1) && a20 == 1)) || (!(a7 == 1) && 15 <= a8) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((13 < a8 && a16 <= 5) || (!(a7 == 1) && a16 <= 5)) || (((((a12 == 8 && a8 == 13) && a21 == 1) && a17 == 1) && a20 == 1) && a16 == 4)) || a21 <= 0) || ((((a12 == 8 && !(a7 == 1)) && a21 == 1) && a17 == 1) && a20 == 1)) || (!(a7 == 1) && 15 <= a8) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:10:06,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a08ce23-33e7-48b3-9ff5-fbbcfff93fbd/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...