./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label53.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label53.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE --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 7127a319cf1cd9799cd1fae45aa7d7ff5ae81a2fc57d6618c5b4c58ba3671893 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 11:18:39,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 11:18:39,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 11:18:39,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 11:18:39,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 11:18:39,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 11:18:39,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 11:18:39,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 11:18:39,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 11:18:39,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 11:18:39,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 11:18:39,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 11:18:39,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 11:18:39,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 11:18:39,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 11:18:39,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 11:18:39,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 11:18:39,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 11:18:39,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 11:18:39,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 11:18:39,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 11:18:39,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 11:18:39,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 11:18:39,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 11:18:39,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 11:18:39,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 11:18:39,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 11:18:39,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 11:18:39,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 11:18:39,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 11:18:39,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 11:18:39,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 11:18:39,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 11:18:39,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 11:18:39,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 11:18:39,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 11:18:39,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 11:18:39,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 11:18:39,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 11:18:39,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 11:18:39,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 11:18:39,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 11:18:39,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 11:18:39,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 11:18:39,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 11:18:39,759 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 11:18:39,760 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 11:18:39,760 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 11:18:39,760 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 11:18:39,760 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 11:18:39,770 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 11:18:39,771 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 11:18:39,771 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 11:18:39,771 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 11:18:39,771 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 11:18:39,772 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 11:18:39,772 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 11:18:39,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 11:18:39,773 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 11:18:39,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 11:18:39,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 11:18:39,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 11:18:39,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 11:18:39,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 11:18:39,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 11:18:39,775 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 11:18:39,775 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 11:18:39,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 11:18:39,776 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 11:18:39,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 11:18:39,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 11:18:39,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 11:18:39,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:18:39,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 11:18:39,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 11:18:39,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 11:18:39,778 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 11:18:39,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 11:18:39,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 11:18:39,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 11:18:39,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 11:18:39,779 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_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7127a319cf1cd9799cd1fae45aa7d7ff5ae81a2fc57d6618c5b4c58ba3671893 [2021-10-24 11:18:40,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 11:18:40,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 11:18:40,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 11:18:40,110 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 11:18:40,111 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 11:18:40,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/eca-rers2012/Problem01_label53.c [2021-10-24 11:18:40,209 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/data/79d2fc03f/c6de8661e40c4a0bbcd407532f991e8d/FLAG736e3158c [2021-10-24 11:18:40,951 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 11:18:40,952 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/sv-benchmarks/c/eca-rers2012/Problem01_label53.c [2021-10-24 11:18:40,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/data/79d2fc03f/c6de8661e40c4a0bbcd407532f991e8d/FLAG736e3158c [2021-10-24 11:18:41,139 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/data/79d2fc03f/c6de8661e40c4a0bbcd407532f991e8d [2021-10-24 11:18:41,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 11:18:41,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 11:18:41,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 11:18:41,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 11:18:41,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 11:18:41,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:18:41" (1/1) ... [2021-10-24 11:18:41,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f8b1f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:41, skipping insertion in model container [2021-10-24 11:18:41,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:18:41" (1/1) ... [2021-10-24 11:18:41,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 11:18:41,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 11:18:41,812 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_dd3307e6-4711-4c22-913b-55f4f5de1a8a/sv-benchmarks/c/eca-rers2012/Problem01_label53.c[19724,19737] [2021-10-24 11:18:41,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:18:41,849 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 11:18:42,038 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_dd3307e6-4711-4c22-913b-55f4f5de1a8a/sv-benchmarks/c/eca-rers2012/Problem01_label53.c[19724,19737] [2021-10-24 11:18:42,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 11:18:42,068 INFO L208 MainTranslator]: Completed translation [2021-10-24 11:18:42,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:42 WrapperNode [2021-10-24 11:18:42,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 11:18:42,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 11:18:42,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 11:18:42,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 11:18:42,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:42" (1/1) ... [2021-10-24 11:18:42,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:42" (1/1) ... [2021-10-24 11:18:42,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 11:18:42,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 11:18:42,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 11:18:42,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 11:18:42,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:42" (1/1) ... [2021-10-24 11:18:42,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:42" (1/1) ... [2021-10-24 11:18:42,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:42" (1/1) ... [2021-10-24 11:18:42,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:42" (1/1) ... [2021-10-24 11:18:42,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:42" (1/1) ... [2021-10-24 11:18:42,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:42" (1/1) ... [2021-10-24 11:18:42,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:42" (1/1) ... [2021-10-24 11:18:42,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 11:18:42,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 11:18:42,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 11:18:42,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 11:18:42,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:42" (1/1) ... [2021-10-24 11:18:42,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 11:18:42,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:18:42,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 11:18:42,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 11:18:42,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 11:18:42,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 11:18:42,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 11:18:42,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 11:18:44,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 11:18:44,514 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 11:18:44,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:18:44 BoogieIcfgContainer [2021-10-24 11:18:44,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 11:18:44,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 11:18:44,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 11:18:44,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 11:18:44,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:18:41" (1/3) ... [2021-10-24 11:18:44,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3f5f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:18:44, skipping insertion in model container [2021-10-24 11:18:44,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:18:42" (2/3) ... [2021-10-24 11:18:44,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3f5f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:18:44, skipping insertion in model container [2021-10-24 11:18:44,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:18:44" (3/3) ... [2021-10-24 11:18:44,529 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2021-10-24 11:18:44,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 11:18:44,536 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 11:18:44,595 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 11:18:44,603 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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 [2021-10-24 11:18:44,604 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 11:18:44,623 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) [2021-10-24 11:18:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-24 11:18:44,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:18:44,634 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] [2021-10-24 11:18:44,635 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:18:44,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:18:44,642 INFO L82 PathProgramCache]: Analyzing trace with hash -104649784, now seen corresponding path program 1 times [2021-10-24 11:18:44,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:18:44,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072395673] [2021-10-24 11:18:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:18:44,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:18:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:18:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:18:45,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:18:45,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072395673] [2021-10-24 11:18:45,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072395673] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:18:45,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:18:45,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:18:45,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181489589] [2021-10-24 11:18:45,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:18:45,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:18:45,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:18:45,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:18:45,221 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 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 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) [2021-10-24 11:18:45,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:18:45,782 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-24 11:18:45,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:18:45,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 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 [2021-10-24 11:18:45,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:18:45,809 INFO L225 Difference]: With dead ends: 224 [2021-10-24 11:18:45,809 INFO L226 Difference]: Without dead ends: 145 [2021-10-24 11:18:45,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:18:45,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-24 11:18:45,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-24 11:18:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 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) [2021-10-24 11:18:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-24 11:18:45,890 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-24 11:18:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:18:45,891 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-24 11:18:45,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 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) [2021-10-24 11:18:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-24 11:18:45,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-24 11:18:45,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:18:45,897 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-10-24 11:18:45,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 11:18:45,898 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:18:45,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:18:45,899 INFO L82 PathProgramCache]: Analyzing trace with hash -601803365, now seen corresponding path program 1 times [2021-10-24 11:18:45,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:18:45,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984585134] [2021-10-24 11:18:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:18:45,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:18:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:18:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 11:18:45,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:18:45,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984585134] [2021-10-24 11:18:45,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984585134] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:18:45,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:18:45,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:18:45,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388201038] [2021-10-24 11:18:45,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:18:45,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:18:45,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:18:45,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:18:45,969 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2021-10-24 11:18:46,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:18:46,442 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-10-24 11:18:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:18:46,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2021-10-24 11:18:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:18:46,446 INFO L225 Difference]: With dead ends: 431 [2021-10-24 11:18:46,446 INFO L226 Difference]: Without dead ends: 287 [2021-10-24 11:18:46,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:18:46,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-24 11:18:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-24 11:18:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.632867132867133) internal successors, (467), 286 states have internal predecessors, (467), 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) [2021-10-24 11:18:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2021-10-24 11:18:46,470 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2021-10-24 11:18:46,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:18:46,471 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2021-10-24 11:18:46,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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) [2021-10-24 11:18:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2021-10-24 11:18:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-24 11:18:46,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:18:46,476 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-24 11:18:46,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 11:18:46,477 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:18:46,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:18:46,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1874604810, now seen corresponding path program 1 times [2021-10-24 11:18:46,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:18:46,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249888027] [2021-10-24 11:18:46,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:18:46,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:18:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:18:46,617 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-24 11:18:46,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:18:46,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249888027] [2021-10-24 11:18:46,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249888027] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:18:46,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:18:46,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:18:46,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919984690] [2021-10-24 11:18:46,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:18:46,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:18:46,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:18:46,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:18:46,631 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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) [2021-10-24 11:18:47,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:18:47,067 INFO L93 Difference]: Finished difference Result 715 states and 1184 transitions. [2021-10-24 11:18:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:18:47,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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 105 [2021-10-24 11:18:47,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:18:47,075 INFO L225 Difference]: With dead ends: 715 [2021-10-24 11:18:47,076 INFO L226 Difference]: Without dead ends: 429 [2021-10-24 11:18:47,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:18:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-24 11:18:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2021-10-24 11:18:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6442577030812324) internal successors, (587), 357 states have internal predecessors, (587), 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) [2021-10-24 11:18:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 587 transitions. [2021-10-24 11:18:47,124 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 587 transitions. Word has length 105 [2021-10-24 11:18:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:18:47,125 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 587 transitions. [2021-10-24 11:18:47,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 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) [2021-10-24 11:18:47,126 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 587 transitions. [2021-10-24 11:18:47,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-24 11:18:47,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:18:47,132 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-24 11:18:47,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 11:18:47,132 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:18:47,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:18:47,133 INFO L82 PathProgramCache]: Analyzing trace with hash -300546240, now seen corresponding path program 1 times [2021-10-24 11:18:47,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:18:47,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198863674] [2021-10-24 11:18:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:18:47,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:18:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:18:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-24 11:18:47,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:18:47,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198863674] [2021-10-24 11:18:47,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198863674] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 11:18:47,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 11:18:47,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 11:18:47,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293183508] [2021-10-24 11:18:47,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:18:47,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:18:47,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:18:47,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:18:47,239 INFO L87 Difference]: Start difference. First operand 358 states and 587 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2021-10-24 11:18:47,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:18:47,601 INFO L93 Difference]: Finished difference Result 715 states and 1173 transitions. [2021-10-24 11:18:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:18:47,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 109 [2021-10-24 11:18:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:18:47,605 INFO L225 Difference]: With dead ends: 715 [2021-10-24 11:18:47,606 INFO L226 Difference]: Without dead ends: 358 [2021-10-24 11:18:47,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 11:18:47,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-24 11:18:47,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-24 11:18:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 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) [2021-10-24 11:18:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2021-10-24 11:18:47,650 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 109 [2021-10-24 11:18:47,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:18:47,651 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2021-10-24 11:18:47,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2021-10-24 11:18:47,653 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2021-10-24 11:18:47,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-24 11:18:47,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:18:47,660 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2021-10-24 11:18:47,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 11:18:47,660 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:18:47,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:18:47,664 INFO L82 PathProgramCache]: Analyzing trace with hash -609031432, now seen corresponding path program 1 times [2021-10-24 11:18:47,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:18:47,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552763697] [2021-10-24 11:18:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:18:47,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:18:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:18:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-24 11:18:47,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:18:47,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552763697] [2021-10-24 11:18:47,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552763697] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:18:47,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896312392] [2021-10-24 11:18:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:18:47,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:18:47,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:18:47,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:18:47,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 11:18:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:18:47,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:18:48,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:18:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-24 11:18:48,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:18:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-24 11:18:49,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896312392] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:18:49,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 11:18:49,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-24 11:18:49,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070438646] [2021-10-24 11:18:49,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:18:49,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:18:49,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:18:49,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:18:49,129 INFO L87 Difference]: Start difference. First operand 358 states and 581 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) [2021-10-24 11:18:49,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:18:49,582 INFO L93 Difference]: Finished difference Result 857 states and 1370 transitions. [2021-10-24 11:18:49,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:18:49,583 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 113 [2021-10-24 11:18:49,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:18:49,590 INFO L225 Difference]: With dead ends: 857 [2021-10-24 11:18:49,590 INFO L226 Difference]: Without dead ends: 429 [2021-10-24 11:18:49,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:18:49,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-24 11:18:49,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2021-10-24 11:18:49,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.2408963585434174) internal successors, (443), 357 states have internal predecessors, (443), 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) [2021-10-24 11:18:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 443 transitions. [2021-10-24 11:18:49,608 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 443 transitions. Word has length 113 [2021-10-24 11:18:49,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:18:49,609 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 443 transitions. [2021-10-24 11:18:49,610 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) [2021-10-24 11:18:49,611 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 443 transitions. [2021-10-24 11:18:49,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-24 11:18:49,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 11:18:49,616 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-24 11:18:49,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 11:18:49,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:18:49,829 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 11:18:49,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 11:18:49,830 INFO L82 PathProgramCache]: Analyzing trace with hash -2139624102, now seen corresponding path program 1 times [2021-10-24 11:18:49,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 11:18:49,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899104045] [2021-10-24 11:18:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:18:49,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 11:18:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:18:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-24 11:18:49,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 11:18:49,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899104045] [2021-10-24 11:18:49,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899104045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 11:18:49,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394101261] [2021-10-24 11:18:49,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 11:18:49,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:18:49,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 11:18:49,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 11:18:49,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 11:18:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 11:18:50,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 11:18:50,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 11:18:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-24 11:18:50,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 11:18:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-24 11:18:51,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394101261] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 11:18:51,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 11:18:51,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-24 11:18:51,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927348690] [2021-10-24 11:18:51,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 11:18:51,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 11:18:51,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 11:18:51,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:18:51,104 INFO L87 Difference]: Start difference. First operand 358 states and 443 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-10-24 11:18:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 11:18:51,467 INFO L93 Difference]: Finished difference Result 997 states and 1227 transitions. [2021-10-24 11:18:51,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 11:18:51,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 125 [2021-10-24 11:18:51,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 11:18:51,470 INFO L225 Difference]: With dead ends: 997 [2021-10-24 11:18:51,470 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 11:18:51,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 11:18:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 11:18:51,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 11:18:51,472 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) [2021-10-24 11:18:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 11:18:51,473 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2021-10-24 11:18:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 11:18:51,473 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 11:18:51,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2021-10-24 11:18:51,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 11:18:51,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 11:18:51,477 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 11:18:51,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-24 11:18:51,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 11:18:51,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 11:18:51,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:51,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:51,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 11:18:51,756 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-24 11:18:51,757 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-24 11:18:51,757 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-24 11:18:51,757 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-24 11:18:51,757 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-24 11:18:51,758 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-24 11:18:51,758 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-24 11:18:51,758 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-24 11:18:51,758 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-24 11:18:51,759 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-24 11:18:51,759 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-24 11:18:51,759 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-24 11:18:51,760 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-24 11:18:51,760 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-24 11:18:51,760 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-24 11:18:51,761 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-24 11:18:51,761 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-24 11:18:51,761 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-24 11:18:51,761 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-24 11:18:51,762 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-24 11:18:51,763 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-24 11:18:51,763 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-24 11:18:51,763 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-24 11:18:51,764 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-24 11:18:51,764 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-24 11:18:51,766 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-24 11:18:51,766 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-24 11:18:51,766 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-24 11:18:51,766 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-24 11:18:51,767 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-24 11:18:51,767 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-24 11:18:51,767 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-24 11:18:51,767 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-24 11:18:51,768 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-24 11:18:51,768 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-24 11:18:51,769 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-24 11:18:51,769 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 11:18:51,770 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-24 11:18:51,770 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-24 11:18:51,770 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-24 11:18:51,771 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1))) (or (<= ~a8~0 13) (and .cse0 (<= 15 ~a8~0)) (and (<= ~a17~0 0) .cse0) (and .cse0 (= ~a20~0 1)))) [2021-10-24 11:18:51,772 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-24 11:18:51,772 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-24 11:18:51,772 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-24 11:18:51,772 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-24 11:18:51,773 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-24 11:18:51,773 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-24 11:18:51,773 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-24 11:18:51,773 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 11:18:51,774 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-24 11:18:51,774 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-24 11:18:51,774 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-24 11:18:51,774 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-24 11:18:51,775 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-24 11:18:51,775 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-24 11:18:51,775 INFO L857 garLoopResultBuilder]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2021-10-24 11:18:51,775 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-24 11:18:51,776 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-24 11:18:51,776 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-24 11:18:51,776 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-24 11:18:51,776 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-24 11:18:51,777 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-24 11:18:51,779 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-24 11:18:51,780 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-24 11:18:51,787 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-24 11:18:51,787 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1))) (or (<= ~a8~0 13) (and .cse0 (<= 15 ~a8~0)) (and (<= ~a17~0 0) .cse0) (and .cse0 (= ~a20~0 1)))) [2021-10-24 11:18:51,788 INFO L857 garLoopResultBuilder]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2021-10-24 11:18:51,788 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-24 11:18:51,788 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 528) no Hoare annotation was computed. [2021-10-24 11:18:51,788 INFO L857 garLoopResultBuilder]: For program point L528(line 528) no Hoare annotation was computed. [2021-10-24 11:18:51,789 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-24 11:18:51,789 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-24 11:18:51,789 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-24 11:18:51,789 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-24 11:18:51,792 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-24 11:18:51,792 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-24 11:18:51,797 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 11:18:51,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:18:51 BoogieIcfgContainer [2021-10-24 11:18:51,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 11:18:51,821 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 11:18:51,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 11:18:51,822 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 11:18:51,822 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:18:44" (3/4) ... [2021-10-24 11:18:51,826 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 11:18:51,869 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2021-10-24 11:18:51,872 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-24 11:18:51,874 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-24 11:18:51,877 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 11:18:52,105 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 11:18:52,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 11:18:52,108 INFO L168 Benchmark]: Toolchain (without parser) took 10961.79 ms. Allocated memory was 119.5 MB in the beginning and 197.1 MB in the end (delta: 77.6 MB). Free memory was 83.3 MB in the beginning and 117.9 MB in the end (delta: -34.6 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-24 11:18:52,108 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:18:52,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 923.31 ms. Allocated memory is still 119.5 MB. Free memory was 83.0 MB in the beginning and 78.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 11:18:52,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 146.92 ms. Allocated memory is still 119.5 MB. Free memory was 78.6 MB in the beginning and 72.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-24 11:18:52,110 INFO L168 Benchmark]: Boogie Preprocessor took 111.83 ms. Allocated memory is still 119.5 MB. Free memory was 72.9 MB in the beginning and 68.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 11:18:52,111 INFO L168 Benchmark]: RCFGBuilder took 2187.18 ms. Allocated memory is still 119.5 MB. Free memory was 68.6 MB in the beginning and 54.2 MB in the end (delta: 14.4 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2021-10-24 11:18:52,111 INFO L168 Benchmark]: TraceAbstraction took 7299.67 ms. Allocated memory was 119.5 MB in the beginning and 197.1 MB in the end (delta: 77.6 MB). Free memory was 53.5 MB in the beginning and 132.6 MB in the end (delta: -79.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 11:18:52,112 INFO L168 Benchmark]: Witness Printer took 284.41 ms. Allocated memory is still 197.1 MB. Free memory was 132.6 MB in the beginning and 117.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 11:18:52,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 88.1 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 923.31 ms. Allocated memory is still 119.5 MB. Free memory was 83.0 MB in the beginning and 78.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 146.92 ms. Allocated memory is still 119.5 MB. Free memory was 78.6 MB in the beginning and 72.9 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 111.83 ms. Allocated memory is still 119.5 MB. Free memory was 72.9 MB in the beginning and 68.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2187.18 ms. Allocated memory is still 119.5 MB. Free memory was 68.6 MB in the beginning and 54.2 MB in the end (delta: 14.4 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7299.67 ms. Allocated memory was 119.5 MB in the beginning and 197.1 MB in the end (delta: 77.6 MB). Free memory was 53.5 MB in the beginning and 132.6 MB in the end (delta: -79.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 284.41 ms. Allocated memory is still 197.1 MB. Free memory was 132.6 MB in the beginning and 117.9 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: 528]: 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: 7204.0ms, OverallIterations: 6, TraceHistogramMax: 4, EmptinessCheckTime: 40.6ms, AutomataDifference: 2755.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 77.4ms, InitialAbstractionConstructionTime: 14.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 379 SDtfs, 279 SDslu, 24 SDs, 0 SdLazy, 1217 SolverSat, 337 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1924.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 486 GetRequests, 474 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=3, 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: 181.0ms AutomataMinimizationTime, 6 MinimizatonAttempts, 142 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 25 NumberOfFragments, 51 HoareAnnotationTreeSize, 3 FomulaSimplifications, 246 FormulaSimplificationTreeSizeReduction, 37.9ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 31.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 128.8ms SsaConstructionTime, 432.3ms SatisfiabilityAnalysisTime, 2672.5ms InterpolantComputationTime, 838 NumberOfCodeBlocks, 838 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1066 ConstructedInterpolants, 0 QuantifiedInterpolants, 2198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 677 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 469/475 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: ((a8 <= 13 || (a21 == 1 && 15 <= a8)) || (a17 <= 0 && a21 == 1)) || (a21 == 1 && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((a8 <= 13 || (a21 == 1 && 15 <= a8)) || (a17 <= 0 && a21 == 1)) || (a21 == 1 && a20 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-24 11:18:52,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3307e6-4711-4c22-913b-55f4f5de1a8a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...