./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label38.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_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/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_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label38.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/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_9050fb22-d0e4-4817-9416-676a56f094d0/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 c9751142c8f7883fbe9b54d25165b76406850b1b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 07:55:37,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:55:37,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:55:37,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:55:37,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:55:37,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:55:37,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:55:37,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:55:37,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:55:37,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:55:37,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:55:37,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:55:37,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:55:37,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:55:37,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:55:37,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:55:37,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:55:37,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:55:37,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:55:37,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:55:37,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:55:37,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:55:37,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:55:37,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:55:37,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:55:37,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:55:37,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:55:37,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:55:37,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:55:37,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:55:37,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:55:37,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:55:37,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:55:37,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:55:37,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:55:37,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:55:37,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:55:37,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:55:37,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:55:37,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:55:37,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:55:37,506 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:55:37,562 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:55:37,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:55:37,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:55:37,565 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:55:37,565 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:55:37,566 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:55:37,566 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:55:37,566 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:55:37,574 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:55:37,575 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:55:37,576 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:55:37,576 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:55:37,577 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:55:37,577 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:55:37,577 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:55:37,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:55:37,578 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:55:37,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:55:37,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:55:37,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:55:37,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:55:37,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:55:37,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:55:37,580 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:55:37,581 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:55:37,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:55:37,581 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:55:37,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:55:37,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:55:37,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:55:37,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:55:37,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:55:37,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:55:37,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:55:37,585 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:55:37,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:55:37,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:55:37,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:55:37,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:55:37,587 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_9050fb22-d0e4-4817-9416-676a56f094d0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9751142c8f7883fbe9b54d25165b76406850b1b [2021-10-13 07:55:37,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:55:37,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:55:37,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:55:37,961 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:55:37,962 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:55:37,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/eca-rers2012/Problem02_label38.c [2021-10-13 07:55:38,028 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/data/b5c521dc6/d65ade5914be45658844240e8014006e/FLAG3055895bb [2021-10-13 07:55:38,732 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:55:38,735 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/sv-benchmarks/c/eca-rers2012/Problem02_label38.c [2021-10-13 07:55:38,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/data/b5c521dc6/d65ade5914be45658844240e8014006e/FLAG3055895bb [2021-10-13 07:55:38,922 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/data/b5c521dc6/d65ade5914be45658844240e8014006e [2021-10-13 07:55:38,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:55:38,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:55:38,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:55:38,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:55:38,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:55:38,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:55:38" (1/1) ... [2021-10-13 07:55:38,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b67d3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:38, skipping insertion in model container [2021-10-13 07:55:38,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:55:38" (1/1) ... [2021-10-13 07:55:38,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:55:39,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:55:39,379 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_9050fb22-d0e4-4817-9416-676a56f094d0/sv-benchmarks/c/eca-rers2012/Problem02_label38.c[20309,20322] [2021-10-13 07:55:39,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:55:39,407 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:55:39,544 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_9050fb22-d0e4-4817-9416-676a56f094d0/sv-benchmarks/c/eca-rers2012/Problem02_label38.c[20309,20322] [2021-10-13 07:55:39,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:55:39,590 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:55:39,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:39 WrapperNode [2021-10-13 07:55:39,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:55:39,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:55:39,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:55:39,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:55:39,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:39" (1/1) ... [2021-10-13 07:55:39,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:39" (1/1) ... [2021-10-13 07:55:39,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:55:39,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:55:39,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:55:39,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:55:39,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:39" (1/1) ... [2021-10-13 07:55:39,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:39" (1/1) ... [2021-10-13 07:55:39,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:39" (1/1) ... [2021-10-13 07:55:39,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:39" (1/1) ... [2021-10-13 07:55:39,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:39" (1/1) ... [2021-10-13 07:55:39,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:39" (1/1) ... [2021-10-13 07:55:39,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:39" (1/1) ... [2021-10-13 07:55:39,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:55:39,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:55:39,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:55:39,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:55:39,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:39" (1/1) ... [2021-10-13 07:55:39,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:55:39,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:55:39,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:55:39,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:55:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:55:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:55:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:55:39,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:55:41,951 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:55:41,952 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:55:41,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:55:41 BoogieIcfgContainer [2021-10-13 07:55:41,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:55:41,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:55:41,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:55:41,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:55:41,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:55:38" (1/3) ... [2021-10-13 07:55:41,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243a0472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:55:41, skipping insertion in model container [2021-10-13 07:55:41,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:55:39" (2/3) ... [2021-10-13 07:55:41,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243a0472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:55:41, skipping insertion in model container [2021-10-13 07:55:41,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:55:41" (3/3) ... [2021-10-13 07:55:41,975 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label38.c [2021-10-13 07:55:41,985 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:55:41,985 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:55:42,051 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:55:42,060 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 07:55:42,061 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:55:42,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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 07:55:42,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-13 07:55:42,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:42,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:55:42,094 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:55:42,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:42,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584343, now seen corresponding path program 1 times [2021-10-13 07:55:42,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:55:42,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297295318] [2021-10-13 07:55:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:42,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:55:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:42,621 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 07:55:42,622 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:55:42,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297295318] [2021-10-13 07:55:42,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297295318] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:42,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:42,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:55:42,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483171172] [2021-10-13 07:55:42,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:55:42,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:55:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:55:42,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:42,647 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 07:55:43,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:43,170 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-13 07:55:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:55:43,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2021-10-13 07:55:43,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:43,184 INFO L225 Difference]: With dead ends: 251 [2021-10-13 07:55:43,185 INFO L226 Difference]: Without dead ends: 163 [2021-10-13 07:55:43,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:43,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-13 07:55:43,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-13 07:55:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.9320987654320987) internal successors, (313), 162 states have internal predecessors, (313), 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 07:55:43,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-10-13 07:55:43,249 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-10-13 07:55:43,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:43,250 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-10-13 07:55:43,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 07:55:43,251 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-10-13 07:55:43,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-13 07:55:43,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:43,256 INFO L512 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:55:43,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:55:43,257 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:55:43,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:43,258 INFO L82 PathProgramCache]: Analyzing trace with hash -329013527, now seen corresponding path program 1 times [2021-10-13 07:55:43,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:55:43,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10368661] [2021-10-13 07:55:43,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:43,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:55:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:43,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:55:43,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10368661] [2021-10-13 07:55:43,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10368661] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:43,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:43,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:55:43,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614916575] [2021-10-13 07:55:43,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:55:43,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:55:43,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:55:43,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:43,341 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 07:55:43,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:43,733 INFO L93 Difference]: Finished difference Result 487 states and 937 transitions. [2021-10-13 07:55:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:55:43,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 91 [2021-10-13 07:55:43,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:43,738 INFO L225 Difference]: With dead ends: 487 [2021-10-13 07:55:43,738 INFO L226 Difference]: Without dead ends: 325 [2021-10-13 07:55:43,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-10-13 07:55:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2021-10-13 07:55:43,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.84472049689441) internal successors, (594), 322 states have internal predecessors, (594), 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 07:55:43,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 594 transitions. [2021-10-13 07:55:43,787 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 594 transitions. Word has length 91 [2021-10-13 07:55:43,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:43,789 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 594 transitions. [2021-10-13 07:55:43,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 07:55:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 594 transitions. [2021-10-13 07:55:43,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-13 07:55:43,801 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:43,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:55:43,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:55:43,802 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:55:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:43,802 INFO L82 PathProgramCache]: Analyzing trace with hash -87616428, now seen corresponding path program 1 times [2021-10-13 07:55:43,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:55:43,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272918738] [2021-10-13 07:55:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:43,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:55:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:43,928 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:55:43,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:55:43,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272918738] [2021-10-13 07:55:43,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272918738] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:43,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:43,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:55:43,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099423748] [2021-10-13 07:55:43,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:55:43,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:55:43,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:55:43,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:43,931 INFO L87 Difference]: Start difference. First operand 323 states and 594 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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 07:55:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:44,356 INFO L93 Difference]: Finished difference Result 885 states and 1638 transitions. [2021-10-13 07:55:44,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:55:44,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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 95 [2021-10-13 07:55:44,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:44,362 INFO L225 Difference]: With dead ends: 885 [2021-10-13 07:55:44,362 INFO L226 Difference]: Without dead ends: 563 [2021-10-13 07:55:44,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-13 07:55:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2021-10-13 07:55:44,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.616182572614108) internal successors, (779), 482 states have internal predecessors, (779), 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 07:55:44,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 779 transitions. [2021-10-13 07:55:44,426 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 779 transitions. Word has length 95 [2021-10-13 07:55:44,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:44,427 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 779 transitions. [2021-10-13 07:55:44,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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 07:55:44,428 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 779 transitions. [2021-10-13 07:55:44,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 07:55:44,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:44,436 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:55:44,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:55:44,437 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:55:44,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:44,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1540154833, now seen corresponding path program 1 times [2021-10-13 07:55:44,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:55:44,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414835208] [2021-10-13 07:55:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:44,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:55:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:55:44,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:55:44,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414835208] [2021-10-13 07:55:44,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414835208] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:44,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:44,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:55:44,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069086543] [2021-10-13 07:55:44,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:55:44,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:55:44,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:55:44,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:44,537 INFO L87 Difference]: Start difference. First operand 483 states and 779 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 07:55:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:44,949 INFO L93 Difference]: Finished difference Result 1205 states and 2008 transitions. [2021-10-13 07:55:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:55:44,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 100 [2021-10-13 07:55:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:44,955 INFO L225 Difference]: With dead ends: 1205 [2021-10-13 07:55:44,955 INFO L226 Difference]: Without dead ends: 723 [2021-10-13 07:55:44,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:44,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-13 07:55:44,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-13 07:55:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.4750692520775623) internal successors, (1065), 722 states have internal predecessors, (1065), 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 07:55:44,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1065 transitions. [2021-10-13 07:55:44,985 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1065 transitions. Word has length 100 [2021-10-13 07:55:44,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:44,986 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1065 transitions. [2021-10-13 07:55:44,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 07:55:44,986 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1065 transitions. [2021-10-13 07:55:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-13 07:55:44,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:44,989 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2021-10-13 07:55:44,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:55:44,990 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:55:44,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:44,991 INFO L82 PathProgramCache]: Analyzing trace with hash -163969627, now seen corresponding path program 1 times [2021-10-13 07:55:44,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:55:44,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426461258] [2021-10-13 07:55:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:44,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:55:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 07:55:45,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:55:45,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426461258] [2021-10-13 07:55:45,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426461258] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:45,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:55:45,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:55:45,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817958497] [2021-10-13 07:55:45,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:55:45,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:55:45,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:55:45,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:45,047 INFO L87 Difference]: Start difference. First operand 723 states and 1065 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 07:55:45,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:45,500 INFO L93 Difference]: Finished difference Result 1925 states and 2912 transitions. [2021-10-13 07:55:45,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:55:45,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 101 [2021-10-13 07:55:45,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:45,509 INFO L225 Difference]: With dead ends: 1925 [2021-10-13 07:55:45,509 INFO L226 Difference]: Without dead ends: 1203 [2021-10-13 07:55:45,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:55:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-10-13 07:55:45,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 963. [2021-10-13 07:55:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.4397089397089398) internal successors, (1385), 962 states have internal predecessors, (1385), 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 07:55:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1385 transitions. [2021-10-13 07:55:45,543 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1385 transitions. Word has length 101 [2021-10-13 07:55:45,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:45,544 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1385 transitions. [2021-10-13 07:55:45,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 07:55:45,544 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1385 transitions. [2021-10-13 07:55:45,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-13 07:55:45,547 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:55:45,547 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1] [2021-10-13 07:55:45,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:55:45,548 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:55:45,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:55:45,549 INFO L82 PathProgramCache]: Analyzing trace with hash -985381725, now seen corresponding path program 1 times [2021-10-13 07:55:45,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:55:45,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008842090] [2021-10-13 07:55:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:45,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:55:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:45,710 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:55:45,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:55:45,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008842090] [2021-10-13 07:55:45,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008842090] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:55:45,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238212050] [2021-10-13 07:55:45,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:55:45,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:55:45,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:55:45,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:55:45,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:55:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:55:45,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:55:45,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:55:46,270 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 07:55:46,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:55:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 07:55:46,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238212050] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:55:46,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-13 07:55:46,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-13 07:55:46,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919026499] [2021-10-13 07:55:46,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:55:46,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:55:46,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:55:46,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:55:46,647 INFO L87 Difference]: Start difference. First operand 963 states and 1385 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 07:55:47,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:55:47,078 INFO L93 Difference]: Finished difference Result 2243 states and 3193 transitions. [2021-10-13 07:55:47,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:55:47,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 107 [2021-10-13 07:55:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:55:47,079 INFO L225 Difference]: With dead ends: 2243 [2021-10-13 07:55:47,079 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:55:47,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 34.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:55:47,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:55:47,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:55:47,082 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 07:55:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:55:47,082 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2021-10-13 07:55:47,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:55:47,083 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:55:47,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 07:55:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:55:47,083 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:55:47,085 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:55:47,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:55:47,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 07:55:47,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:55:47,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:55:47,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:55:47,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:55:47,376 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-13 07:55:47,378 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-13 07:55:47,378 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-13 07:55:47,378 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-13 07:55:47,379 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-13 07:55:47,379 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-13 07:55:47,379 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-13 07:55:47,380 INFO L857 garLoopResultBuilder]: For program point L571-1(lines 39 608) no Hoare annotation was computed. [2021-10-13 07:55:47,380 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-13 07:55:47,380 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-13 07:55:47,380 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-13 07:55:47,381 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-13 07:55:47,381 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-13 07:55:47,381 INFO L857 garLoopResultBuilder]: For program point L574-1(lines 39 608) no Hoare annotation was computed. [2021-10-13 07:55:47,381 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-13 07:55:47,381 INFO L857 garLoopResultBuilder]: For program point L575(line 575) no Hoare annotation was computed. [2021-10-13 07:55:47,382 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-13 07:55:47,382 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-13 07:55:47,383 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-13 07:55:47,383 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-13 07:55:47,384 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-13 07:55:47,385 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-13 07:55:47,386 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-13 07:55:47,386 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-13 07:55:47,388 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-13 07:55:47,388 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-13 07:55:47,388 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-13 07:55:47,388 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-13 07:55:47,389 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-13 07:55:47,389 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:55:47,389 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-13 07:55:47,389 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-13 07:55:47,389 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-13 07:55:47,390 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-13 07:55:47,390 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-13 07:55:47,390 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-13 07:55:47,390 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-13 07:55:47,390 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-13 07:55:47,391 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-13 07:55:47,391 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 575) no Hoare annotation was computed. [2021-10-13 07:55:47,391 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-13 07:55:47,391 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-13 07:55:47,391 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-13 07:55:47,392 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-13 07:55:47,392 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-13 07:55:47,392 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-13 07:55:47,392 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-13 07:55:47,392 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-13 07:55:47,393 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-13 07:55:47,393 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-13 07:55:47,393 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-13 07:55:47,393 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-13 07:55:47,393 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-13 07:55:47,394 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-13 07:55:47,394 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-13 07:55:47,394 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-13 07:55:47,395 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (or (and (<= 8 ~a17~0) (= ~a11~0 0) (not (= ~a25~0 1))) (<= ~a28~0 10) (= ~a19~0 1)) [2021-10-13 07:55:47,395 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-13 07:55:47,395 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-13 07:55:47,396 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-13 07:55:47,396 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-13 07:55:47,396 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-13 07:55:47,396 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-13 07:55:47,397 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-13 07:55:47,397 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-13 07:55:47,397 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:55:47,398 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-13 07:55:47,398 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-13 07:55:47,399 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (or (and (<= 8 ~a17~0) (= ~a11~0 0) (not (= ~a25~0 1))) (<= ~a28~0 10) (= ~a19~0 1)) [2021-10-13 07:55:47,399 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-13 07:55:47,399 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-13 07:55:47,399 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-13 07:55:47,402 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-13 07:55:47,402 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-13 07:55:47,404 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-13 07:55:47,404 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-13 07:55:47,404 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-13 07:55:47,405 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-13 07:55:47,405 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-13 07:55:47,408 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-13 07:55:47,408 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-13 07:55:47,408 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-13 07:55:47,408 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-13 07:55:47,409 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-13 07:55:47,409 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-13 07:55:47,415 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:55:47,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:55:47 BoogieIcfgContainer [2021-10-13 07:55:47,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:55:47,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:55:47,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:55:47,445 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:55:47,445 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:55:41" (3/4) ... [2021-10-13 07:55:47,449 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:55:47,488 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2021-10-13 07:55:47,490 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-13 07:55:47,492 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-13 07:55:47,495 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:55:47,705 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:55:47,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:55:47,707 INFO L168 Benchmark]: Toolchain (without parser) took 8769.92 ms. Allocated memory was 121.6 MB in the beginning and 247.5 MB in the end (delta: 125.8 MB). Free memory was 81.0 MB in the beginning and 202.2 MB in the end (delta: -121.2 MB). Peak memory consumption was 94.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:55:47,708 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 121.6 MB. Free memory is still 98.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:55:47,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.72 ms. Allocated memory is still 121.6 MB. Free memory was 80.8 MB in the beginning and 81.0 MB in the end (delta: -149.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:55:47,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.91 ms. Allocated memory is still 121.6 MB. Free memory was 81.0 MB in the beginning and 75.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:55:47,709 INFO L168 Benchmark]: Boogie Preprocessor took 86.55 ms. Allocated memory is still 121.6 MB. Free memory was 75.8 MB in the beginning and 71.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:55:47,709 INFO L168 Benchmark]: RCFGBuilder took 2160.90 ms. Allocated memory was 121.6 MB in the beginning and 180.4 MB in the end (delta: 58.7 MB). Free memory was 71.6 MB in the beginning and 115.6 MB in the end (delta: -44.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:55:47,710 INFO L168 Benchmark]: TraceAbstraction took 5482.84 ms. Allocated memory is still 180.4 MB. Free memory was 115.6 MB in the beginning and 51.2 MB in the end (delta: 64.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:55:47,710 INFO L168 Benchmark]: Witness Printer took 261.61 ms. Allocated memory was 180.4 MB in the beginning and 247.5 MB in the end (delta: 67.1 MB). Free memory was 51.2 MB in the beginning and 202.2 MB in the end (delta: -151.0 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:55:47,713 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 121.6 MB. Free memory is still 98.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 652.72 ms. Allocated memory is still 121.6 MB. Free memory was 80.8 MB in the beginning and 81.0 MB in the end (delta: -149.1 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 106.91 ms. Allocated memory is still 121.6 MB. Free memory was 81.0 MB in the beginning and 75.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.55 ms. Allocated memory is still 121.6 MB. Free memory was 75.8 MB in the beginning and 71.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2160.90 ms. Allocated memory was 121.6 MB in the beginning and 180.4 MB in the end (delta: 58.7 MB). Free memory was 71.6 MB in the beginning and 115.6 MB in the end (delta: -44.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5482.84 ms. Allocated memory is still 180.4 MB. Free memory was 115.6 MB in the beginning and 51.2 MB in the end (delta: 64.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 16.1 GB. * Witness Printer took 261.61 ms. Allocated memory was 180.4 MB in the beginning and 247.5 MB in the end (delta: 67.1 MB). Free memory was 51.2 MB in the beginning and 202.2 MB in the end (delta: -151.0 MB). Peak memory consumption was 7.3 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: 575]: 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, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5366.0ms, OverallIterations: 6, TraceHistogramMax: 4, EmptinessCheckTime: 42.3ms, AutomataDifference: 2720.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 89.4ms, InitialAbstractionConstructionTime: 17.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 306 SDtfs, 454 SDslu, 24 SDs, 0 SdLazy, 1454 SolverSat, 410 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1874.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 51.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=963occurred in iteration=5, 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: 210.2ms AutomataMinimizationTime, 6 MinimizatonAttempts, 322 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 37 HoareAnnotationTreeSize, 3 FomulaSimplifications, 464 FormulaSimplificationTreeSizeReduction, 42.8ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 37.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 94.9ms SsaConstructionTime, 284.2ms SatisfiabilityAnalysisTime, 1393.9ms InterpolantComputationTime, 681 NumberOfCodeBlocks, 681 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 780 ConstructedInterpolants, 0 QuantifiedInterpolants, 2980 SizeOfPredicates, 0 NumberOfNonLiveVariables, 299 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 172/188 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: 616]: Loop Invariant Derived loop invariant: (((8 <= a17 && a11 == 0) && !(a25 == 1)) || a28 <= 10) || a19 == 1 - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((8 <= a17 && a11 == 0) && !(a25 == 1)) || a28 <= 10) || a19 == 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:55:47,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9050fb22-d0e4-4817-9416-676a56f094d0/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...