./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.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_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/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_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/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_1a76a62f-0a75-4f41-97d2-117e5a841c4b/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 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:15:05,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:15:05,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:15:05,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:15:05,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:15:05,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:15:05,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:15:05,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:15:05,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:15:05,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:15:05,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:15:05,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:15:05,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:15:05,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:15:05,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:15:05,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:15:05,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:15:05,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:15:05,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:15:05,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:15:05,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:15:05,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:15:05,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:15:05,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:15:05,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:15:05,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:15:05,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:15:05,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:15:05,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:15:05,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:15:05,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:15:05,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:15:05,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:15:05,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:15:05,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:15:05,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:15:05,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:15:05,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:15:05,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:15:05,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:15:05,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:15:05,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:15:05,833 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:15:05,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:15:05,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:15:05,834 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:15:05,834 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:15:05,835 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:15:05,835 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:15:05,835 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:15:05,835 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:15:05,835 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:15:05,836 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:15:05,836 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:15:05,836 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:15:05,836 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:15:05,837 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:15:05,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:15:05,838 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:15:05,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:15:05,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:15:05,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:15:05,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:15:05,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:15:05,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:15:05,839 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:15:05,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:15:05,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:15:05,840 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:15:05,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:15:05,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:15:05,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:15:05,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:15:05,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:15:05,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:15:05,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:15:05,842 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:15:05,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:15:05,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:15:05,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:15:05,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:15:05,843 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_1a76a62f-0a75-4f41-97d2-117e5a841c4b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c [2021-10-24 10:15:06,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:15:06,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:15:06,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:15:06,129 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:15:06,130 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:15:06,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2021-10-24 10:15:06,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE/data/90110acd2/08f6f2b944d1429e92556b1e48436a7d/FLAGa7f5f978f [2021-10-24 10:15:06,613 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:15:06,615 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2021-10-24 10:15:06,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE/data/90110acd2/08f6f2b944d1429e92556b1e48436a7d/FLAGa7f5f978f [2021-10-24 10:15:07,004 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE/data/90110acd2/08f6f2b944d1429e92556b1e48436a7d [2021-10-24 10:15:07,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:15:07,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:15:07,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:15:07,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:15:07,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:15:07,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:15:07" (1/1) ... [2021-10-24 10:15:07,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f25ff25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:07, skipping insertion in model container [2021-10-24 10:15:07,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:15:07" (1/1) ... [2021-10-24 10:15:07,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:15:07,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:15:07,220 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_1a76a62f-0a75-4f41-97d2-117e5a841c4b/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2333,2346] [2021-10-24 10:15:07,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:15:07,230 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:15:07,250 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_1a76a62f-0a75-4f41-97d2-117e5a841c4b/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2333,2346] [2021-10-24 10:15:07,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:15:07,265 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:15:07,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:07 WrapperNode [2021-10-24 10:15:07,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:15:07,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:15:07,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:15:07,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:15:07,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:07" (1/1) ... [2021-10-24 10:15:07,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:07" (1/1) ... [2021-10-24 10:15:07,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:15:07,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:15:07,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:15:07,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:15:07,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:07" (1/1) ... [2021-10-24 10:15:07,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:07" (1/1) ... [2021-10-24 10:15:07,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:07" (1/1) ... [2021-10-24 10:15:07,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:07" (1/1) ... [2021-10-24 10:15:07,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:07" (1/1) ... [2021-10-24 10:15:07,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:07" (1/1) ... [2021-10-24 10:15:07,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:07" (1/1) ... [2021-10-24 10:15:07,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:15:07,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:15:07,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:15:07,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:15:07,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:07" (1/1) ... [2021-10-24 10:15:07,370 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:15:07,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:15:07,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:15:07,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:15:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-24 10:15:07,441 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-24 10:15:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-24 10:15:07,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-24 10:15:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-24 10:15:07,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-24 10:15:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:15:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:15:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 10:15:07,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:15:07,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:15:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 10:15:07,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:15:07,450 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-24 10:15:07,786 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:15:07,787 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-24 10:15:07,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:15:07 BoogieIcfgContainer [2021-10-24 10:15:07,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:15:07,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:15:07,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:15:07,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:15:07,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:15:07" (1/3) ... [2021-10-24 10:15:07,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122590bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:15:07, skipping insertion in model container [2021-10-24 10:15:07,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:07" (2/3) ... [2021-10-24 10:15:07,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122590bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:15:07, skipping insertion in model container [2021-10-24 10:15:07,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:15:07" (3/3) ... [2021-10-24 10:15:07,797 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2021-10-24 10:15:07,802 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-24 10:15:07,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:15:07,802 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 10:15:07,803 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-24 10:15:07,837 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,838 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,838 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,838 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,839 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,839 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,839 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,839 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,840 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,841 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,841 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,841 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,841 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,842 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,842 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,843 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,844 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,844 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,844 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,844 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,845 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,845 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,845 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,845 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,846 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,846 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,846 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,846 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,846 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,847 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,847 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,847 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,847 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,847 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,848 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,849 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,849 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,865 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,866 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,866 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,866 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,866 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,867 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,867 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,867 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,867 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,867 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,868 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,868 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,868 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,868 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,868 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,869 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,869 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,869 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,872 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,872 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,872 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,873 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,877 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,877 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,877 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,877 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,895 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,895 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,896 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,896 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-24 10:15:07,907 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-24 10:15:07,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:15:07,980 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 10:15:07,980 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 10:15:08,022 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-24 10:15:08,037 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 116 transitions, 256 flow [2021-10-24 10:15:08,040 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 116 transitions, 256 flow [2021-10-24 10:15:08,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 118 places, 116 transitions, 256 flow [2021-10-24 10:15:08,124 INFO L129 PetriNetUnfolder]: 8/113 cut-off events. [2021-10-24 10:15:08,125 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-24 10:15:08,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 113 events. 8/113 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2021-10-24 10:15:08,134 INFO L116 LiptonReduction]: Number of co-enabled transitions 1950 [2021-10-24 10:15:12,806 INFO L131 LiptonReduction]: Checked pairs total: 1859 [2021-10-24 10:15:12,806 INFO L133 LiptonReduction]: Total number of compositions: 115 [2021-10-24 10:15:12,814 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 64 flow [2021-10-24 10:15:12,824 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 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) [2021-10-24 10:15:12,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 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) [2021-10-24 10:15:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 10:15:12,831 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:12,832 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:15:12,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:15:12,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:12,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1318921148, now seen corresponding path program 1 times [2021-10-24 10:15:12,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:15:12,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818324330] [2021-10-24 10:15:12,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:12,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:15:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:15:13,725 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 10:15:13,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:15:13,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818324330] [2021-10-24 10:15:13,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818324330] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:15:13,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:15:13,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:15:13,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825204667] [2021-10-24 10:15:13,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:15:13,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:15:13,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:15:13,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:15:13,749 INFO L87 Difference]: Start difference. First operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 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) Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 10:15:13,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:13,961 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2021-10-24 10:15:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:15:13,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-24 10:15:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:13,972 INFO L225 Difference]: With dead ends: 67 [2021-10-24 10:15:13,973 INFO L226 Difference]: Without dead ends: 52 [2021-10-24 10:15:13,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 225.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:15:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-24 10:15:14,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2021-10-24 10:15:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 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 10:15:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2021-10-24 10:15:14,008 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 16 [2021-10-24 10:15:14,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:14,009 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2021-10-24 10:15:14,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 10:15:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2021-10-24 10:15:14,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 10:15:14,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:14,011 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:15:14,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:15:14,011 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:15:14,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:14,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1121567244, now seen corresponding path program 2 times [2021-10-24 10:15:14,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:15:14,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761558517] [2021-10-24 10:15:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:14,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:15:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:15:14,427 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 10:15:14,428 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:15:14,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761558517] [2021-10-24 10:15:14,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761558517] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:15:14,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:15:14,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:15:14,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961033742] [2021-10-24 10:15:14,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:15:14,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:15:14,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:15:14,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:15:14,443 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 10:15:14,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:14,666 INFO L93 Difference]: Finished difference Result 63 states and 94 transitions. [2021-10-24 10:15:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:15:14,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-24 10:15:14,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:14,668 INFO L225 Difference]: With dead ends: 63 [2021-10-24 10:15:14,668 INFO L226 Difference]: Without dead ends: 44 [2021-10-24 10:15:14,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 254.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:15:14,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-24 10:15:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2021-10-24 10:15:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 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 10:15:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-10-24 10:15:14,674 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 16 [2021-10-24 10:15:14,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:14,675 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-10-24 10:15:14,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 10:15:14,675 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2021-10-24 10:15:14,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 10:15:14,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:14,676 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:15:14,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 10:15:14,676 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:15:14,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:14,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1662040410, now seen corresponding path program 3 times [2021-10-24 10:15:14,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:15:14,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077232187] [2021-10-24 10:15:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:14,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:15:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:15:15,396 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 10:15:15,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:15:15,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077232187] [2021-10-24 10:15:15,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077232187] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:15:15,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:15:15,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:15:15,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12591410] [2021-10-24 10:15:15,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:15:15,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:15:15,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:15:15,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:15:15,400 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 10:15:15,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:15,814 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2021-10-24 10:15:15,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:15:15,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-24 10:15:15,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:15,816 INFO L225 Difference]: With dead ends: 51 [2021-10-24 10:15:15,816 INFO L226 Difference]: Without dead ends: 36 [2021-10-24 10:15:15,816 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 472.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:15:15,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-24 10:15:15,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-10-24 10:15:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 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 10:15:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2021-10-24 10:15:15,820 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 16 [2021-10-24 10:15:15,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:15,821 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2021-10-24 10:15:15,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 10:15:15,821 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2021-10-24 10:15:15,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 10:15:15,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:15,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:15:15,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 10:15:15,822 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:15:15,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:15,823 INFO L82 PathProgramCache]: Analyzing trace with hash -685730346, now seen corresponding path program 4 times [2021-10-24 10:15:15,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:15:15,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651667565] [2021-10-24 10:15:15,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:15,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:15:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:15:16,179 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 10:15:16,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:15:16,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651667565] [2021-10-24 10:15:16,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651667565] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:15:16,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:15:16,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:15:16,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442152695] [2021-10-24 10:15:16,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:15:16,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:15:16,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:15:16,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:15:16,182 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 10:15:16,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:16,600 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2021-10-24 10:15:16,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:15:16,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-24 10:15:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:16,602 INFO L225 Difference]: With dead ends: 37 [2021-10-24 10:15:16,602 INFO L226 Difference]: Without dead ends: 24 [2021-10-24 10:15:16,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 471.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:15:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-24 10:15:16,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-24 10:15:16,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 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 10:15:16,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2021-10-24 10:15:16,605 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2021-10-24 10:15:16,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:16,605 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2021-10-24 10:15:16,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 10:15:16,606 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2021-10-24 10:15:16,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 10:15:16,606 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:16,606 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:15:16,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 10:15:16,607 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:15:16,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:16,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1970644718, now seen corresponding path program 5 times [2021-10-24 10:15:16,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:15:16,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508319542] [2021-10-24 10:15:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:16,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:15:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:15:17,022 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 10:15:17,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:15:17,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508319542] [2021-10-24 10:15:17,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508319542] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:15:17,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:15:17,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:15:17,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66934136] [2021-10-24 10:15:17,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:15:17,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:15:17,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:15:17,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:15:17,025 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 10:15:17,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:17,458 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-10-24 10:15:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:15:17,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-24 10:15:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:17,459 INFO L225 Difference]: With dead ends: 31 [2021-10-24 10:15:17,459 INFO L226 Difference]: Without dead ends: 22 [2021-10-24 10:15:17,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 500.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:15:17,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-24 10:15:17,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-24 10:15:17,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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 10:15:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-10-24 10:15:17,463 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2021-10-24 10:15:17,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:17,463 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-10-24 10:15:17,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 10:15:17,464 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-10-24 10:15:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-24 10:15:17,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:17,465 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:15:17,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 10:15:17,465 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-24 10:15:17,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:17,466 INFO L82 PathProgramCache]: Analyzing trace with hash -251706366, now seen corresponding path program 6 times [2021-10-24 10:15:17,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:15:17,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911299576] [2021-10-24 10:15:17,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:17,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:15:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:15:18,087 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 10:15:18,087 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:15:18,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911299576] [2021-10-24 10:15:18,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911299576] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:15:18,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:15:18,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 10:15:18,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537810016] [2021-10-24 10:15:18,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:15:18,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:15:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:15:18,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:15:18,090 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 10:15:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:18,492 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-24 10:15:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:15:18,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-24 10:15:18,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:18,493 INFO L225 Difference]: With dead ends: 21 [2021-10-24 10:15:18,493 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:15:18,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 541.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:15:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:15:18,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:15:18,493 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 10:15:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:15:18,494 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-24 10:15:18,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:18,494 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:15:18,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 10:15:18,494 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:15:18,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:15:18,496 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:15:18,497 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-24 10:15:18,497 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-24 10:15:18,497 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-24 10:15:18,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 10:15:18,505 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-24 10:15:18,506 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:15:18,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:15:18 BasicIcfg [2021-10-24 10:15:18,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:15:18,510 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:15:18,510 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:15:18,513 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:15:18,516 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:15:07" (3/4) ... [2021-10-24 10:15:18,519 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:15:18,525 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-24 10:15:18,526 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-24 10:15:18,526 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-24 10:15:18,533 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-24 10:15:18,533 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 10:15:18,533 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:15:18,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:15:18,592 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:15:18,592 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:15:18,594 INFO L168 Benchmark]: Toolchain (without parser) took 11584.67 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 68.2 MB in the beginning and 103.3 MB in the end (delta: -35.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:18,598 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 102.8 MB. Free memory was 73.6 MB in the beginning and 73.6 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:15:18,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.34 ms. Allocated memory is still 102.8 MB. Free memory was 68.0 MB in the beginning and 78.9 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:18,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.38 ms. Allocated memory is still 102.8 MB. Free memory was 78.9 MB in the beginning and 77.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:15:18,599 INFO L168 Benchmark]: Boogie Preprocessor took 52.24 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 76.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:18,599 INFO L168 Benchmark]: RCFGBuilder took 427.44 ms. Allocated memory is still 102.8 MB. Free memory was 76.0 MB in the beginning and 63.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:18,600 INFO L168 Benchmark]: TraceAbstraction took 10719.13 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 62.9 MB in the beginning and 106.5 MB in the end (delta: -43.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:18,600 INFO L168 Benchmark]: Witness Printer took 82.06 ms. Allocated memory is still 148.9 MB. Free memory was 106.5 MB in the beginning and 103.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:18,603 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 102.8 MB. Free memory was 73.6 MB in the beginning and 73.6 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.34 ms. Allocated memory is still 102.8 MB. Free memory was 68.0 MB in the beginning and 78.9 MB in the end (delta: -10.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.38 ms. Allocated memory is still 102.8 MB. Free memory was 78.9 MB in the beginning and 77.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.24 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 76.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 427.44 ms. Allocated memory is still 102.8 MB. Free memory was 76.0 MB in the beginning and 63.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10719.13 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 62.9 MB in the beginning and 106.5 MB in the end (delta: -43.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Witness Printer took 82.06 ms. Allocated memory is still 148.9 MB. Free memory was 106.5 MB in the beginning and 103.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4766.7ms, 118 PlacesBefore, 30 PlacesAfterwards, 116 TransitionsBefore, 20 TransitionsAfterwards, 1950 CoEnabledTransitionPairs, 6 FixpointIterations, 49 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 14 ConcurrentYvCompositions, 8 ChoiceCompositions, 115 TotalNumberOfCompositions, 1859 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1859, positive: 1859, positive conditional: 0, positive unconditional: 1859, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1520, positive: 1520, positive conditional: 0, positive unconditional: 1520, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1520, positive: 1520, positive conditional: 0, positive unconditional: 1520, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1859, positive: 339, positive conditional: 0, positive unconditional: 339, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1520, unknown conditional: 0, unknown unconditional: 1520] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 77]: 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 with 1 thread instances CFG has 7 procedures, 148 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 10535.8ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 2155.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4844.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 138 SDtfs, 182 SDslu, 173 SDs, 0 SdLazy, 93 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 183.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2465.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.6ms AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.6ms SsaConstructionTime, 442.5ms SatisfiabilityAnalysisTime, 2822.2ms InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 4195 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-24 10:15:18,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a76a62f-0a75-4f41-97d2-117e5a841c4b/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...